Bulging Gable Wall & Leaning Dormer Brickwork
AWT was contacted by the new owners of this period semi in Wimbledon, South West London. Like many similar properties, it has a loft conversion with a rear dormer window. The new owners realised the value of quickly tackling structural issues, such as a bulging gable wall before the problems progressed.
Structural repairs cost much less and are far less disruptive than rebuilding work. Preserving period features also protect a property’s resale value.
The Structural Problem
AWT’s free survey found significant outward bulging and corresponding internal cracking movement to the gable brick wall. Although there was only mild cracking in the brickwork at this point, the internal ceilings and plaster were cracked. If left unrepaired, cracks in the brickwork and internal plaster would accelerate, making the necessary repairs more expensive.
Prompt action to fix structural issues saves money and stress.
The rear extended brickwork had also started to lean. If left unchecked, the brickwork would become unstable and eventually collapse.
The structural integrity of the gable wall had diminished due to age and a lack of restraint in the original construction of the wall. The extra weight from the loft conversion structure, fixtures and fittings may also have put additional strain on the existing masonry.
The Structural Solution
As shown in the Before and After photos, AWT realigned and strengthened the brickwork without visible fixings or any obvious changes to the appearance of the period brickwork. The majority of the work was completed from outside the property, keeping disruption to a minimum. This was achieved with a combination of:
- Bed Joint Reinforcement Beaming
- Lateral Restraints
- Resin Bonded Wall Ties
AWT uses precision diamond drilling techniques to install stainless steel fixings within the masonry. This strengthens the masonry so it can bear the load of the structure above without bowing.
Resin-bonded steel lateral restraints reconnect the gable wall to the rest of the structure, reinstating the uniformity of the wall and preventing bowing.
Remedial wall ties restrain the dormer brickwork and prevent it from leaning outwards.
Action Wall Ties are specialists in structural repairs, including bulging and bowing masonry. AWT works on large and small projects with homeowners, architects, project managers, London borough councils 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.