Cavity Wall Tie Repairs
Cavity walls are a common form of construction in properties built from the early 20th century onwards. Designed to improve weather resistance and thermal performance, cavity walls consist of two masonry leaves connected by wall ties that help the structure act as a single, stable unit.
At Bristol Damp Solution, we provide professional cavity wall tie surveys and remedial repairs to ensure the long-term stability and safety of affected buildings.
What Are Cavity Wall Ties?
Cavity wall ties are typically metal components, historically coated in zinc or bitumen, installed at regular intervals to connect the inner and outer walls. Over time, particularly in properties constructed before the 1980s, many of these ties have deteriorated faster than originally anticipated.
As corrosion progresses, expanding wall ties can place stress on surrounding masonry, leading to visible defects and structural instability.
Signs of Wall Tie Failure
Common indicators of cavity wall tie failure include:
Stepped cracking along mortar joints
Horizontal cracking in brickwork
Bulging or bowing external walls
Separation or movement within masonry
These issues should be assessed promptly, as continued deterioration can compromise structural integrity.
Professional Diagnosis & Remedial Wall Ties
Our specialist surveyors are experienced in diagnosing wall tie failure and distinguishing it from other causes of cracking or movement. Following inspection, we will recommend the most appropriate remedial approach.
Where wall tie replacement is required, we install high-grade, corrosion-resistant remedial wall ties designed to provide permanent stability. These ties will not rust or corrode, ensuring long-term performance.
Once installed:
Structural stability is restored
Existing wall ties are left in place or isolated where appropriate
Cosmetic repairs are carried out to minimise visual impact
Masonry Reinforcement & Structural Stabilisation
Wall tie failure is not the only cause of masonry cracking. Building movement caused by settlement, thermal changes or environmental factors can also lead to instability.
Modern repair techniques now allow for discreet masonry reinforcement, avoiding the need for extensive rebuilding. This includes the installation of engineered helical steel reinforcement bars, inserted into mortar joints at precise intervals to strengthen and stabilise brickwork.
These solutions are:
Cost-effective
Concealed within the mortar bed
Minimally disruptive
Suitable for a wide range of masonry structures
Specialist Wall Surveys
Using specialist detection equipment, our surveyors can accurately locate existing wall ties and assess their condition. This allows us to determine whether wall tie failure is present and recommend the most suitable remediation method.
Once repairs are completed, the wall is left stable, secure, and structurally sound.