Solution: Realignment of brick arch & masonry lintels & reinforce

Distorted Georgian Bay Window Masonry

Failing Bay Window Support Beam

This beautiful Georgian property in Kent had structural issues with one wing of the property. AWT was called in to assess the distortion of the first-floor windows and ground-floor bay window brickwork and masonry. Cracks had also appeared in the first-floor internal plaster. Like many properties that AWT surveys, there were signs of previous failed repairs.

Our specialist structural repair techniques preserve your property’s period features, which protects its market value.

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Failing Georgian Bay Window
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Distorted Window Brickwork

AWT provided a cost-effective structural repair that minimised disruption to the residents and preserved the property’s period features. To learn more about how AWT can help with structural defects in bay windows, read our Bay Window Structural Repair FAQs.

Unlike traditional builders, AWT can provide targeted, long-term structural repairs without rebuilding work.

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Before Repairs
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After Repairs
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Before Repairs
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Before Repairs
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After Repairs

The Structural Problem

Bay Window

The substantial masonry cornice above the bay window was cracked and showed signs of distortion. Gaps had opened up in the window cill causing cracks in the brickwork below. The brickwork bay window arch was also cracking and dropping.

Like many properties that AWT surveys, there were signs of previous failed repairs.

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Bay Brickwork Dropping
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Cracks Below Bay Window
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Cracking Around Bay Window
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Bay Window with Cracked Bricks

Inspection of the junction between the bay window brickwork and the main elevation revealed cracking and signs of movement. Previous attempts to repair the structural issues using traditional building methods had failed, and the cracks had spread.

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Sagging Window Brickwork
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Cracks Growing Around Bay
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Cracks in Bay Cornice
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Spreading Bay Window Cracks

First Floor Windows

The beautiful group of 3 windows is a key feature of the Georgian facade. The significant dropping of the brickwork columns and the semi-circle brickwork arch had left a gap between the brickwork arch and corbeled brickwork above the arch. Without suitable structural repairs, the brick arch could collapse, damaging the period brick and the ornate stone corbel at the top of the arch.

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Cracking & Dropping Brickwork
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Gaps in Brick Arch
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Dropping Window Brickwork
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Cracking Bay Window Plaster

The 2 smaller windows also showed signs of distortion. The brickwork above the windows was cracking and dropping. Inside the property, the plaster around the windows was cracking.

Structural Defects

The timber bressummer support beam over the bay window was overstressed (as are most period beams) and affected by creep, allowing the supported masonry to drop. The masonry required realignment and reinforcement. It also needed reconnecting to the main structure to prevent further movement.

The Structural Solution

 AWT provided a set of targeted structural repairs to give a long-term solution without the cost and disruption of rebuilding work. Our specialist structural repair techniques preserve your property’s period features, which protects its market value.

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Specialist Tools
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Cracks Repaired
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Brickwork Realigned
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Realigned & Repaired
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Brickwork Realigned & Repaired
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Realigned & Reinforced Brick Arch

AWT’s special diamond drilling methods developed over many years, and our specialised equipment allows precision diamond drilling to install fixings exactly where they are needed.

The structural repairs included:

  • Brickwork Realignment
  • Bed Joint Reinforcement Beaming
  • Window Lintel Brickwork Arch Repair
  • Lateral Restraints
  • Precision diamond drilling
  • Grout Tie Injection
  • Brickwork Repairs
  • Concrete Repairs

Action Wall Ties are specialist structural repair contractors with the knowledge and experience required to repair period properties with severe structural defects, such as failed bay window support beams.  AWT work with property owners, structural engineers, architects, project managers and local authorities on large and small projects.

AWT are available across London, Kent, Essex, Surrey and Sussex. To arrange a survey or to discuss project details, please use our contact form, email us or call us on 01227 721 255.

Bay Window Movement Solved Without Rebuild

Unstable Ornate Bay Window Fully Repaired Without Rebuilding

Like many Victorian/Edwardian bay window properties, this home in SE London was suffering from movement of the bay window masonry.  The lack of structural integrity was affecting the entire front of the property.

The severe bay window distortion required urgent structural repairs to avoid collapse. AWT solved the bay window issues and preserved the valuable period features around the door and windows. Prompt structural repairs are far less expensive and disruptive than rebuilding a collapsed bay window.

  • No rebuilding work
  • No visible fixings
  • No need to empty the rooms
  • No need to remove or replace windows
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Before Bay Window Repairs
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After Bay Window Repairs & Painting

Simply filling cracks and repointing brickwork will not halt the progressive movement of bay window masonry.

The Structural Problem

A combination of age and inadequate restraint has allowed the bay window to pull away from the main elevation. The door arch and 1st-floor window were also cracking and dropping. Such serious defects, if not addressed by suitable structural repairs, will result in the ultimate failure and collapse of the structure.

Specialist structural repairs preserve valuable period features & protect the property value.

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Gaps Between Window Frame & Brickwork
Leaning Bay Window Columns
Gaps at Top of Bay Windows
Bay Window Plaster Cracks
Cracked Stonework
Cracks in Plaster & Coving
Bay Window Brickwork Cracks
Gaps Between Window & Brick
Unstable Bay Window
 
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  • Significant distortion and outward movement of the ground and first-floor bay window brickwork columns
  • Gaps opening up between the window frames and the bay window columns
  • Cracking at the junctions with main elevational brickwork
  • Cracking in internal plaster
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Cracking Bay Lintel
Cracking Bay Sill
Cracks in Plaster & Coving
1st Floor Bay Cracks & Gaps
Cracking & Dropping Lintel
Cracking Doorway Stonework
Cracked Bay Lintel
Cracked Bay Sill
1st Floor Bay Cracking
 
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  • Distortion and cracking of the bay window masonry lintels
  • Cracking of the bay window sills
  • Significant cracking to the front first-floor window masonry lintel
  • Entrance door masonry arch cracking

The Structural Solution

Simply filling cracks and repointing brickwork will not halt the progressive movement of bay window masonry. Specialist structural repairs are the most cost-effective solution.

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Bay Window Realignment
Strengthening Bay Window
Repairing Stone Door Arch
Brick Columns Realigned
Repairing Cracked Brickwork
 
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The structural repairs included:

  • Temporary supports for the ground and first-floor bay window lintels
  • Realignment of the brickwork columns and masonry lintels using equipment designed by AWT
  • Restraints for the slender brickwork bay window columns
  • Stainless steel corded joint reinforcement to form a deep masonry beam
  • Stainless steel bed joint reinforcement within the masonry of the bay window
  • Grouted helical bar to reconnect the bay window brickwork and masonry
  • Grouted helical bar to reconnect the bay window to the main elevational brickwork
  • Stainless steel lateral restraints resin bonded to the masonry
  • Repairs to cracked and spalled masonry including decorative door arch
  • Repointing the heritage brickwork with the appropriate, colour-matched mortar and pointing style
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Bay Window Structural Repairs
Strengthening Bay Window Lintel
Realign/Reinforce Lintel & Masonry
Bay Window Sill Repairs
 
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The formation of continuous beams within the existing masonry redistributes the upper-storey loads and restrains diagonal cracking and bulging tendencies.

All the original, ornate stonework was preserved and a coat of paint then completed the transformation.

Specialist structural repairs preserve valuable period features and protect the property value. Repairing, rather than rebuilding failing period bay windows can save homeowners thousands of pounds.

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Repaired & Repainted
Realigned/Reinforced Bay Columns
Decorative Arch Repaired & Strengthened
Lintel Realigned & Repaired
Lintel, Columns & Sill Repaired
 
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Action Wall Ties are specialist structural repair contractors with the skills and experience required to repair ornate period bay windows.  AWT work with property owners, structural engineers, architects, project managers and local authorities on large and small projects.

AWT are available in London, Essex, Surrey, Kent and Sussex. To arrange a survey or to discuss project details, please use our contact form, email us or call us on 01227 721 255.

Timber Bay Window Beam Replacement

Realignment, Reinforcement & Bressumer Beam Replacement

This period property in Lambeth, SW London was undergoing a complete refurbishment. The structural defect affecting the wooden front bay window beam was endangering the entire facade of the property. Without suitable structural repairs the front of the property would collapse.

AWT were chosen to complete the structural repairs because their specialist techniques allow them to replace bay window beams, realign masonry and reinforce structural integrity without slow, costly rebuilding work. AWT were able to preserve the beautiful period features of the property and provide a long term structural repair.

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Before Structural Repairs
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After Structural Repairs

The Structural Problem

Like many Edwardian/Victorian period properties, this South-West London property had been built with a timber Bressumer beam supporting the masonry above the bay window. This wooden beam had decayed leaving the upper storey brickwork without adequate support and on the verge of collapse.

The unsupported weight of the first floor brickwork was damaging the mouldings around the bay window, causing it to crack and lean away from the main elevation. The 2 first floor windows were sagging in a characteristic V shape.

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Rotting Timber Bay Window Beam
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Bay Stonework Cracking & Leaning

Some of the symptoms of the Bressumer beam failure seen in this property:

  • Significant visible distortion of the supporting bressummer beam of the front bay window
  • Dropping brickwork and windows above the bay window
  • Bowing of the main roof
  • Signs of distorting outward movement from the head of the single-storey bay window
  • Cracked masonry and some cracking to the brickwork
  • Cracking and missing section to the masonry cill, partly due to rusting mild steel within the cill
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Cracking Bay Stonework
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Crumbling Bay Cill
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Cracking, Crumbling Cill
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Failing Timber Beam
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Bay Beam Movement
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Decayed Bressumer Beam
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Sagging Brick Above Bay Window

This type of horizontal wooden beam is known by a number of different names including:

  • Timber lintel
  • Bressumer, Bressummer or Breastsummer beam
  • Summer Beam
  • Various other spellings including Sommer, Somer, Sommier and Somier

This type of substantial wooden lintel is often found in period properties over bay windows. Old Edwardian/Victorian timber Bressumer lintels over bay windows are generally over-stressed compared to modern-day standards. They are often found to have moved out of position. Further problems with timber lintels include rot, damp, pest infestations etc. This can render the lintel ineffective, deflecting the brickwork above, as well as the floor and the ceiling. Another common cause of Bressumer beam problems is movement within the building’s structure which leaves the beam lacking adequate support.

The Structural Repair Solution

AWT identified the root cause of the structural issues to be the failure of the timber Bressumer beam in the bay window and inadequate restraint of the bay window masonry. Even without the issue of the beam decaying, the original beam was not strong enough.

The structural repair works required the replacement of the wooden bay window support beam, realignment and strengthening of the brickwork and the addition of lateral restraints to tie the bay window to the main elevation.

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Removal of Old Beam
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Installing New Beam
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Replacement Beam
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New Bay Window Beam
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Realigned Bay
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Strengthened Bay
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New Lateral Restraints
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Repaired Cill

The structural repair works included:

  • Installation of temporary bay window supports & bracing
  • Use of AWT-designed realigning equipment to lift the brickwork back in line
  • Removal of old, decayed Bressumer beam
  • Replacement of the timber Bressumer beam with a suitable metal beam
  • Introduction of Bed Joint Reinforcement – Beaming to reinforce the brickwork
  • Installation of lateral restraints
  • Diamond drilling and injection of grouted ties to reinstate uniformity
  • Window cill and brickwork repairs

AWT’s repair works were achieved without leaving any visible fixings. The interior finishes were left ready for the renovation work and decorating to be completed. The exterior ornate bay window mouldings and cill were left ready for painting.

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After Structural Repairs
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After Repairs & Repainting

AWT provide cost-effective structural repairs for a wide range of structural faults including failing wooden lintels and beams. We operate not only in London but across the whole of the South East of England including Kent, Surrey, Sussex and Essex.

Read our frequently asked questions about bay window structural repairs.

To book a time for one of our surveyors to visit your property or to discuss your requirements, call us today on 01227 721255, email us at enquiries@actionwallties.co.uk or use our contact form to get in touch.

Failing 1960s/70s Brick Lintels

Repairs to 1960s/70s Brick Lintels – Diagonal Cracks & Dropping Brickwork

This semi-detached home near Maidstone in Kent was built in the 1960s or 1970s. The property is a cavity wall construction with no visible external lintels above the doors or windows.

In common with many properties built in the 60s and 70s, it suffered from brickwork issues above the doors and windows. It showed signs of previous, unsuccessful attempts to repair the brickwork by traditional building methods. Structural repairs were required to avoid the failure of the lintels and the collapse of the unsupported brickwork above the lintels.

There are many housing estates across the South East, including many former council house estates, that are built in the same way. AWT has helped homeowners and housing associations find a cost-effective solution to brick-lintel defects.

Common symptoms of brick lintel issues include:

  • Gaps opening up in brickwork
  • Cracks in brickwork, especially diagonal, stepped cracks
  • Cracks in plaster around doors and windows
  • Sagging and dropping brickwork above doors or windows
  • Difficulty opening or closing doors and windows

 

60s 70s failing lintels - Failing 1960s/70s Brick Lintels

The Structural Problem

The AWT survey found dropping and cracking to the external brickwork that forms the supporting lintel above the window openings and supported brickwork above, which if not treated would result in their failure.

As can be seen in the photos below, previous attempts had been made to repair the cracks. Traditional building methods had only provided a temporary, cosmetic repair. Cracks could be clearly seen running through the areas that had been repointed.

Inside the property, cracks had opened up in the plaster around the windows.

The brick lintels had been deteriorating over a long period. The failure of the existing window and door lintels was causing the brickwork above the lintels to drop and crack due to a lack of support.

As well as causing cracks and gaps in the brickwork, the pressure of the unsupported masonry will warp doors and windows making them difficult to open and close. Without appropriate structural repairs, the outer skin of the brickwork would collapse.

The Structural Solution

The remedial works were designed to restore the masonry to the correct alignment and add tensile strength by installing state-of-the-art fixings within the brickwork. The formation of continuous beams within the existing masonry redistributes the upper-storey loads and restrains diagonal cracking and bulging tendencies.

AWT’s specialist precision drilling equipment allowed the fixings to be installed from the exterior of the property with minimal disturbance to the residents.

AWT’s specialist structural repair techniques provided a long-term repair without visible fixings or rebuilding work.

  • Instal temporary supports to the underside of door & window openings
  • Removal of debris from brickwork cracks
  • Realign lintels using hydraulic equipment
  • Instal stainless steel corded joint reinforcement within the brickwork to form a load-bearing beam within the masonry
  • Instal helical stainless steel pins to secure the brick lintels
  • Instal resin bond stainless steel ties forming truss ties
  • Reconnect masonry using grouted 8mm helical bar
  • Instal remedial wall ties to debonded cavity brickwork
  • Re-point disturbed areas of mortar with colour-matched mortar

Action Wall Ties are specialist structural repair contractors with the skills and experience required to repair properties of all ages.  AWT works on domestic and commercial projects for homeowners, housing associations, structural engineers, architects, project managers and local authorities.

AWT are available in Kent, London, Essex, Surrey and Sussex. To arrange a survey or to discuss project details, please use our contact form, email us or call us on 01227 721 255.

Collapsing Ornate Bay & Balcony

Victorian Bay Window & Balcony: Structural Repairs & Restoration

victorian portico bay - Collapsing Ornate Bay & Balcony

This beautiful example of ornate Victorian architecture in Thanet was at risk of imminent collapse due to severe structural issues. The property had visible significant movement including bowing, cracking, dropping of brickwork arches and bowing columns of the front bay window and to the front elevation.

Several companies had surveyed the problems but none offered any solutions. Previous repairs to the property had tackled the symptoms of the structural defect but had failed to cure the root cause of the problem.

It took just 2 weeks of work for AWT to complete a cost-effective, long-term structural repair. Compared to rebuilding work, the disruption to the residents was minimal.

The Structural Problem

The structural issues with this period property in Thanet, Kent were clearly visible. Wide gaps had opened up between the masonry and the window frames. The structural defect had caused damage from the ground floor bay window columns up to the decorative brickwork panels below the eaves. This entire section of the property was in severe danger of collapse.

Bay Window Issues

 

AWT’s inspection of the front bay window found significant distorting movement to the front ground floor causing:

  •  outward movement
  • dropping and cracking of the brickwork arches and stone quoins
  • significant outward bowing of brickwork columns beyond the tipping point

 

First Floor Masonry Issues

Inspection of the front elevational brickwork found signs of distorting movement of the ground floor supporting bressummer beam (over the bay window) causing:

  • dropping of the supported main elevational brickwork
  • dropping brickwork pier stone quoins
  • dropping window arches above the bay window
  • inward sloping and cracking of the brickwork above the bay window

As part of previous attempts to halt the movement of the masonry, the bressummer beam over the bay window had been replaced by an old-style RSJ.

Bay & Portico Balcony Issues

The owners also wanted to deal with some aesthetic problems with the bay and portico balcony balustrade’s decorative wrought iron panels and stone top rails. All the panels required refurbishment. The bay window’s stone top rail had been replaced with an unattractive concrete capping. The portico stone top rails were mainly missing. New stones, in keeping with the period features, were needed to complete the restoration.

The Structural Solution

AWT recommended realigning and reinforcing remediation work to the existing brickwork including:

  • brickwork realignment
  • bed joint reinforcement
  • brickwork arch repair
  • diamond drilled grouted anchors
  • lateral restraints
  • grout tie injection
  • stonework & brickwork repairs
  • addition of fabricated steel spines to the columns
  • addition of an internal restraint post to the first floor

This multi-faceted approach reinstates uniformity and provides restraint to the masonry.

AWT also carefully removed the balcony balustrade panels for refurbishment. The lugs were replaced with stainless steel before the panels were grit blasted, powder-coated black and refitted. The brickwork corner piers were rebuilt. Finally, AWT had replacement capping stones cast in a limestone material with stainless steel reinforcing and bedded them in position.

Fast, Cost-effective, Minimal Disruption, Long Term Structural Repairs

Tackling such serious structural issues using traditional building techniques would have required reconstruction and rebuilding of the front of the property. Rebuilding would have been expensive, slow and highly disruptive to the homeowners. Damage to the original bricks and ornate stonework would be inevitable.

In just 2 weeks, AWT’s long-term repairs were completed without major rebuilding work or visible fixings to mar the internal or external period features.

Action Wall Ties are specialist structural repair contractors with the skills and experience required to repair and restore period properties.  AWT works on large and small projects for property owners, structural engineers, architects, project managers and local authorities.

AWT are available in Kent, London, Essex, Surrey and Sussex. To arrange a survey or to discuss project details, please use our contact form, email us or call us on 01227 721 255.

Sagging Window Masonry at Risk of Collapse

Bressumer Beam Replacement & Masonry Realignment Without Demolition

The masonry at the front of this mid-terraced home near Croydon, London, was sagging in the middle due to a failing bressumer support beam above the bay window. The distortion was clearly visible outside the property, with the distortion of the windows giving it a cartoon-like sad expression. Inside the property the floors were sloping and walls and ceilings cracking.

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Dropping Brickwork & Windows
Sagging Windows
Distorted Windows. Failing Bressumer Beam.
Sloping Floors. Failing Bressumer Beam.
Sloping Windows. Failing Bressumer Beam.
 
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The structural problem had progressed so far that it was bowing the main roof of the property. Without suitable structural repairs the property was at risk of collapse.

Traditional building works to repair such a serious structural fault would have required a major building project. Standard building methods would require de-construction of the front elevation, replacing the beam, rebuilding the front first floor brickwork, refitting the windows and re-plastering inside.

The Structural Problem

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Structural Repairs for Sagging Masonry.
Repairs to Dropping Windows
Ceiling Cracks due to Failing Bressumer Beam
During Bresummer Beam Replacement
 
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This Victorian/Edwardian home in South East London had clearly visible structural distortion:

  • Significant visible distortion of the front elevational masonry
  • Dropping of the centre column of 1st floor brickwork
  • Significant deflection to the window openings, cills & lintels down to the centre of the building
  • Bowing of the main roof
  • Cracking to the internal plaster
  • Bulging of the ceiling

The AWT survey team rapidly diagnosed a failing bressumer beam. Bressumer beams are also known as bressummer beams, breastsummer beams, summer beams, timber lintels or wooden beams.

These large timber beams span openings, such as bay windows, and support the masonry above. They are often found in period bay windows and shop windows.

Failure of a Bressumer beam, due to deterioration of the wood or movement within the structure, can have serious knock-on effects on the building’s structural integrity.

Period timber Bressumer beams over bay windows are often over stressed by modern day standards. The load from the structure above causes the beam to creep or deform and causes significant deflection from the beam’s correct position.  This, together with further deterioration of the timber due to rot, damp, pest infestations etc can cause the beam to fail, deflecting the brickwork, floor and ceiling above.

This was a serious structural defect significant and if it was not addressed it would result in the ultimate failure and collapse of the structure.

The Structural Repair Solution

AWT were called in to find an alternative to slow, expensive and disruptive rebuilding works. AWT have spent many years developing equipment and methods that allow structural repairs to be carried out that treat the root causes of the problem without demolition and rebuilding. This allows for a less disruptive, more cost effective repair solution.

AWT’s structural repair plan included:

  • Installation of temporary supports
  • Using AWT designed equipment to realign the bressumer beam, floor joists, brickwork, window cills and lintels
  • Removal of the existing timber bressumer beam
  • Formation of concrete pad stone supports
  • Installing a new steel beam
  • Masonry beaming – reinforcement of the brickwork using Bed Joint Reinforcement
  • Restraining bulging masonry by installation of resin bonded ties within the brickwork
  • Concrete and brickwork repairs
  • Matching replacement bricks, pointing style and mortar mixture for texture and colour

The property owners replaced the old, distorted windows in the future to complete the transformation.

AWT left the property with hardly a sign of the extensive work visible on the outside of the property. Inside, there are no visible fixings. The disturbed areas of the internal wall and ceiling were left ready for replastering and redecoration. As can be seen in the photos, the internal finishes have been disturbed far less than would have been the case after repairs by traditional techniques.

Action Wall Ties are specialist structural repair contractors with the skills required to replace failing bay window beams, realign masonry and reinforce brickwork on modern, period and heritage properties. AWT work along with property owners, architects, project managers and local authorities on large and small projects.

AWT are available for projects of all sizes in London, Kent, Essex, Surrey and Sussex. To arrange a survey or to discuss project details, please use our contact form, email us or call us on 01227 721 255.

Soldier Brick Lintel Repairs Kent

Dropping & Cracking Soldier Brick Lintels

This 1950s / 1960s home in Erith, Kent has brick support lintels above the doors and windows made up of upright bricks known as soldier brickwork courses. The soldier brick lintels, also known as straight arches, were dropping and cracking. Without suitable structural repairs the lintels and the brickwork above would fail. This would damage the UPVC windows and doors and eventually lead to the collapse of the brickwork. This problem often occurs after new windows and doors have been fitted to properties of this era.

Repairs soldier bricks - Soldier Brick Lintel Repairs Kent

The Structural Problem

The brickwork above the doors and windows of this semi detached home near Dartford, Kent was supported by lintels comprised of upright, soldier bricks. Deep cracks had formed around the soldier brick lintels, the soldier bricks were also dropping. This was leaving the brickwork above unsupported, putting pressure on the UPVC windows and doors.

Failing soldier brick lintels can lead to warping of the double glazed UPVC replacement windows and difficulties opening doors and windows. The masonry above the lintels will begin to drop and sag. Eventually, the lintels would fail, causing the brickwork above to collapse.

Common Symptoms of Soldier Brick Lintel Failure:

  • Cracks around lintels above windows & doors
  • Difficulties opening & closing windows & doors
  • Sagging brickwork above windows & doors
  • Symptoms often become more noticeable after fitting replacement windows & doors

soldier bricks cracks - Soldier Brick Lintel Repairs Kent

The Structural Repair Solution

The structural inadequacy of the straight arch lintels was repaired by reinforcing the masonry above and forming a composite beam within the external brickwork. The formation of deep masonry beams within the existing masonry supports the masonry and maintains the integrity to the brickwork.

The 3 techniques used by AWT were:

  1. Bed Joint Reinforcement Beaming
  2. Fenestration Lintel Repair
  3. Resin Bonded Ties.

This reinstated the uniformity of the brickwork while at the same time providing restraint, preventing the brickwork from dropping and cracking.

soldier brick lintel repair - Soldier Brick Lintel Repairs Kent

The AWT team put temporary supports in place before using their specialist realignment equipment to move the dropping lintel back into line with the adjacent brickwork. Then rows of twin 8mm stainless steel corded joint reinforcement fixings were installed within the masonry forming a deep masonry beam. Grouted helical stainless steel pins were also installed to reattach the soldier course forming the lintel to the brickwork above and resin ties fixed to the inner skin within the beam area.

Cracked or disturbed areas of pointing were made good with colour matched mortar. The precision drilling techniques used by AWT results in the minimal disturbance of the mortar in the brickwork.

 

Repair soldier bricks - Soldier Brick Lintel Repairs Kent
Completed Soldier Brick Lintel Repairs

Why Choose AWT for Structural Repairs?

Unlike traditional builders, AWT can

  • treat the root cause of the structural defect
  • repair structural issues without partial demolition and rebuilding work
  • make structural repairs without visible fixings
  • provide a long-term solution to structural failings
  • make repairs with minimal disruption for residents

AWT can provide structural repairs for homeowners as well as housing associations, councils, main contractors, London boroughs and social housing providers.

AWT provide cost-effective structural repairs for a wide range of structural faults including dropping soldier brick lintels and cracked brickwork. We operate not only in Kent but across the whole of London and the South East of England.

To book a time for one of our surveyors to visit your property or to discuss your requirements, call us today on 01227 721255, email us at enquiries@actionwallties.co.uk or use our contact form to get in touch.

Remedial Wall Ties for Victorian Semi in Surrey

Bulging & Cracking Brickwork Across Front of Victorian Semi Detached Houses

These 2 Victorian semi detached houses in Egham, Surrey had a significant bulge in the brickwork above the first floor windows. There was also a failing brick arch lintel and cracking to the brickwork. Without swift action the masonry would collapse.

AWT were called in to repair the defects and allow the homeowners to avoid slow, expensive and disruptive rebuilding work. Equipment designed by AWT was used to realign the brickwork, stabilise and reinforce the masonry and then install new wall ties and lateral restraints.

Surrey bowing masonry repairs - Remedial Wall Ties for Victorian Semi in Surrey

The Structural Problem

The AWT survey team visited the property in Surrey, TW20 to identify the root cause of the visible bulging of the masonry at the front of the property. The AWT survey team quickly identified that this Victorian semi was built using cavity wall construction and that failing cavity wall ties were likely a root cause of the problem.

A limited inspection of the wall ties was undertaken by drilling 12mm holes in the outer leaf of brickwork to view within the cavity via an endoscope. This confirmed the diagnosis of failing wall ties, as can be seen from the photos taken with the endoscope, as the corrosion of the metal was clearly visible. The mild steel ties were all in a similarly heavily corroded condition and showing signs of de-laminating.

Failing Victorian wall ties surrey - Remedial Wall Ties for Victorian Semi in Surrey

Horizontal cracking, lifting and opening up of joints was noted at irregular intervals on the front elevation. Metal ties were located behind the cracks, with an electronic wall tie locator.

Corrosion of the embedded mild steel wall ties was causing them to expand to many times their original size. This was damaging the outer leaf of brickwork, splitting the bed joints and causing either lifting or bowing of the walls and damage to internal finishes. This left the wall vulnerable to vertical and wind loads, especially such a large gable wall.

Without structural repairs the wall would continue to bow further and eventually collapse. Traditional building methods would have required the partial deconstruction and rebuilding of the front of the properties.

The Structural Repair Solution

Completed wall tie repairs Surrey - Remedial Wall Ties for Victorian Semi in Surrey

Unlike some cavity wall tie repair contractors, AWT always works to the standards laid out in the Building Research Establishment Specification Digest. This means that the separation between new wall ties, the layout pattern of the new wall ties and the material used to manufacture the new wall ties all meet the highest standards to ensure a safe, long term structural repair.

To avoid failure of the brickwork and brickwork arch AWT realigned the bulged brickwork, installed new stainless steel wall ties, isolated the old ties to prevent them causing further damage and formed a composite beam within the external brickwork. The formation of deep masonry beams within the existing masonry supports the masonry and maintains the integrity of the brickwork.

AWT use their own custom designed hydraulic realignment equipment and diamond bladed precision drilling rigs. This allows the new fixings to be installed with minimal disturbance to the masonry. A variety of specialist fixings were introduced into the brickwork to restore the strength and stability of the wall.

As can be seen in the photo above, when the work is complete there are no visible fixing either inside or outside the property. The AWT team also take the time to colour match any replacement bricks as well as matching the colour, texture and pointing style of the mortar where work has taken place.

AWT provide cost effective structural repairs for a wide range of structural faults including failing cavity wall ties and bulging brickwork. We operate not only in Surrey but across the whole of London and the South East of England.

To book a time for one of our surveyors to visit your property or to discuss your requirements, call us today on 01227 721255, email us at enquiries@actionwallties.co.uk or use our contact form to get in touch.

Hazardous Masonry on Grade 2 Listed Building

Listed Building with Bulging & Cracking Masonry

This Grade II listed building in Thanet, Kent, was built in the 1840’s. The owners of this period property were facing the prospect of demolition and rebuilding of the facade of the property due to serious structural defects. Previous repairs using standard building techniques had failed to solve the structural problems. The property is currently in use as a nursery school. The business would have been forced to close for several months during traditional building works. AWT were able to repair the severe structural problems in a couple of weeks and preserve the period features without disrupting the running of the business.

Thanet grade 2 listed - Hazardous Masonry on Grade 2 Listed Building

The Structural Problem

The structural issues with this Victorian, Grade 2 listed property in Ramsgate, Kent were becoming hazardous due to the risk of falling masonry. Traditional building methods would have required several months of expensive and messy deconstruction and rebuilding work. The business would have been forced to close during the building works and the subsequent re-plastering and redecoration.

The front of the building had clearly visible bulging and cracking to the head of all the first floor windows. There were also cracks in the brickwork and stucco works each side and to the underside soffit of the window opening heads. There were clear signs of previous attempts at repairs that had failed to get to the root cause of the problems.

grade 2 listed structural defect - Hazardous Masonry on Grade 2 Listed Building
Buckling Brickwork

As shown in the photo below, the mild steel embedded within the masonry had corroded and the rust caused it to expand to several times the thickness of the original metal. The heavily corroded wrought iron arch bars were lifting and cracking the brickwork and the decorative stucco around the windows. The stucco stringer course frieze and cornice of the parapet wall was also cracking and distorting. Previous attempts at repairs had provided a temporary, cosmetic repair but had failed to solve the underlying structural defects.

The continued expansive corrosion of the wrought iron arch bars would, without remedial works, lead to the failure of the masonry and the risk of detached masonry falling from the building. Urgent structural repairs were required.

The Structural Repair Solution

Structural repairs to listed buildings need to be handled carefully to preserve the period features of the building. AWT have many years of experience working on listed properties. AWT can help the owners of listed buildings to navigate through the process of obtaining permission for repair works.

The specialist tools and techniques that AWT employ allow structural repairs to be made without the need for visible fixings. Using custom designed drilling and cutting tools, AWT can remove corroded metal fixings and embed new stainless steel fixings within the masonry.

Scaffolding listed building repairs - Hazardous Masonry on Grade 2 Listed Building

In order to allow the business to remain open during the structural repair works, AWT arranged for the scaffolding to be erected at the weekend while the nursery was closed. The scaffolding was then double boarded and netted for safety. The AWT crew accessed the scaffolding from the side of the building allowing parents, children and staff to access the building as usual through the main entrance.

 

The AWT team used their specialist techniques to form composite beams within the existing brickwork and then remove and replace the corroded wrought iron arch bars. The team then reconnected and reinforced the brickwork above the windows and the parapet wall. They also repaired the cracked decorative stucco.

This project required a combination of:

  • Bed joint reinforcement beaming
  • Grout tie injection
  • Resin bonded ties
  • Cintec sock anchors
  • Removal of corroded mild steel arch bars
  • Replacement arch bars
  • Brickwork repairs

The team at AWT strive to make all works as sympathetic as possible with the existing masonry. Not only do they try to match replacement bricks and pointing for colour and style they even match the mortar mixture texture.

The high quality fixings used by AWT combined with their thorough knowledge of structural defects ensures a long term solution to structural issues.

Action Wall Ties are structural repair contractors with the specialist skills required for listed buildings. AWT work along with property owners, architects, project managers and local authorities to preserve historic buildings.

AWT are available for large and small projects in Kent, London, Essex, Surrey and Sussex. To arrange a survey or to discuss project details, please use our contact form, email us or call us on 01227 721 255.

Stone Arch & Bay Window Reinforcement

Reinforcement and Repair of Ornate Stone Arch & Bay

This end of terrace home in Walthamstow, East London had 2 structural issues. The stone entrance arch had significant cracking to the brickwork above and cracking in the internal walls. The ornate bay window was dropping and leaning outwards plus the stonework was cracking and spalling.

Walthamstow bay repairs - Stone Arch & Bay Window Reinforcement

The Structural Problem

The period decorative features on this home in London, E17, were showing their age due to structural issues causing cracked brickwork and stonework. The structural movement had exacerbated the deterioration of the paintwork leaving the beautiful, ornate stonework looking shabby.

There was significant cracking above the stone entrance arch in both the external brickwork and the internal walls.

E17 stone arch repair - Stone Arch & Bay Window Reinforcement

The bay window had visibly shifted and caused cracks in the external brickwork as well as in the interior walls. The supporting columns and cills had become distorted.

These are common problems in such Victorian / Edwardian properties and are usually the result of ageing and inadequate restraining in the original building methods.

The AWT team also had to be prepared in case the masonry components weren’t solid masonry but simply a thin facade covering a timber frame.

 

The Structural Repair Solution

  • Installation of temporary supports & AWT designed cramping equipment
  • Realignment of masonry with hydraulic jacks
  • Precision diamond drilling & installation of stainless steel corded joint reinforcement.
  • Reconnecting the bay window brickwork to the main elevation by embedding grouted 8mm helical bars.
  • Installation of lateral restaints.
  • Repair damaged stonework with Flexcrete Monomix concrete repair mortar system.
  • Crack stitching work to cracked brickwork.
  • Cutting back damaged brick faces or resurfacing damaged bricks where possible using AWT methods.
  • Cutting out badly cracked bricks and replacing with colour matched yellow stock bricks.
  • Re-point disturbed areas with colour matched sand lime and cement mixture.

AWT provided an efficient, cost effective, permanent repair without the need for visible fixings. AWT have the tools and skills to remediate the root cause of these types of period property structural defects. AWT’s specialist fixings meant no rebuilding work was required and so disruption to the homeowner was kept to a minimum. The property was left ready for painting to restore it to its former glory.

E17 bay arch repairs - Stone Arch & Bay Window Reinforcement

Read our frequently asked questions about bay window structural repairs.

For a fast, effective solutions to stone arch and bay window structural problems contact AWT today. We provide professional solutions to a wide variety of structural issues for home owners across London, Kent, Surrey and Sussex. Contact us on 01227 721 255, or email us.

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