Lateral Restraint Ties: How to Stabilise Bulging Brick Walls
What Are Lateral Restraint Ties?
Bulging brick walls and bowing masonry can indicate that an external wall is no longer adequately connected to the internal structure of a building. Where a lack of lateral restraint is identified as the cause, lateral restraint ties from Twistfix can provide an effective remedial solution for suitable applications.
Designed to connect external masonry walls to parallel timber floor joists, these stainless steel wall restraint ties help resist lateral movement and improve the connection between the external wall and the building's internal structure.
For builders, surveyors and structural repair contractors, choosing the correct lateral restraint system is an important consideration when planning bulging wall repairs.
What Causes a Brick Wall to Bulge or Bow?
External masonry walls need adequate restraint to resist lateral forces and maintain stability. In some buildings, particularly older properties, the connections between external walls and internal floor structures may be inadequate, deteriorated or missing.
This can contribute to outward movement, leaving sections of brickwork visibly bowed or bulging. Cracking around openings and separation at wall junctions may also indicate structural movement.
Bulging brickwork should always be investigated to establish the underlying cause. A suitable repair depends on the wall construction, the extent of movement and the condition of the supporting structure.
How Do Lateral Restraint Wall Ties Work?
Lateral restraint wall ties are designed to secure an external masonry wall to suitable structural members, helping prevent further lateral movement where the system is appropriate.
Twistfix lateral restraint ties feature a drill-like leading end designed to cut into softwood timber joists. The ties are installed through the external masonry and driven into the identified joists. The masonry end is then resin-fixed to create the required connection.
Installation can be carried out from outside the property, helping minimise disruption to internal finishes. However, the joist positions must be established and concealed services identified before drilling begins.
Find out more about the Twistfix stainless steel lateral restraint ties, available in a range of lengths for suitable masonry restraint applications.
Choosing a Lateral Restraint Kit for Bulging Walls
For contractors undertaking a suitable bulging brick wall repair, a complete lateral restraint kit provides a convenient way to source the principal installation components together.
The Twistfix Lateral Restraint Wall Tie Kit is designed for tying bulging or bowing masonry back to the internal floor structure. The kit includes five 1-metre lateral restraint tie bars, an SDS setting tool, a masonry drill bit, polyester resin with a mixer nozzle and a resin applicator.
Supplying the main components together can simplify product selection when planning suitable remedial work.
The appropriate tie length, anchorage and spacing must be determined for the individual building and repair specification. Always follow the manufacturer's current installation instructions and technical guidance.
Can Bulging Brickwork Be Repaired Without Rebuilding?
In some cases, a suitable lateral restraint system can help stabilise bulging masonry without the need to dismantle and rebuild the affected section of wall. The feasibility of this approach depends on the cause and severity of the movement, the condition of the brickwork and the availability of suitable structural members.
Where the wall is severely displaced, the masonry is damaged or the underlying cause remains uncertain, further investigation and professional structural advice may be necessary before selecting a repair method.
Correctly specified lateral restraint ties can form an important part of a remedial strategy designed to improve the connection between external walls and the building's supporting structure.
Explore the Twistfix Lateral Restraint Range
Twistfix supplies lateral restraint ties and complete lateral restraint kits for suitable bulging wall and bowing masonry repairs.
Explore our lateral restraint product range to compare the available solutions, or view the lateral restraint wall tie kit for a convenient installation package.
If you need assistance identifying suitable products for your project, contact the Twistfix team for further information.