Cavity Wall Tie

Cavity Wall Tie Replacement

Cavity Wall Ties – The Problem

In the main cavity walls have been constructed since the beginning of the 20th century and were constructed to offer better protection from the elements as well as reduce the amount of heat lost unnecessarily from a property. The system comprises of two separate walls ‘tied’ at strategic intervals using a form of wall tie commonly made of metal coated in bitumen or zinc.

In the 1980’s it became apparent that the wall ties deteriorated much quicker than anticipated leading to the need in cavity wall tie replacements.

There are many issues associated with failing cavity wall ties:

• Horizontal and stepped cracking of the masonry / mortar
• Possible bulging of the walls
• The original building specification may have used too few wall tiles
• The removal of old wall ties is often a difficult procedure
• Detection of the problem requires specialist equipment in the form of metal detectors and a borerscope

Repairing and replacing cavity wall ties

Timberwise have fully trained and experienced surveyors who have a range of solutions at their disposal to solve your cavity wall tie problem. Our surveyor will recommend the most suitable structural repair for your property as well as providing a written report for the work to be carried out.

• In order to assess existing cavity wall ties Timberwise use various types of specialist equipment. High quality metal detectors are used to locate the wall ties within the construction.
• After location the condition of the wall ties is assessed using fibre optic boroscopes.
• After assessment of the cavity wall ties Timberwise will put forward a specification for remedial works if required.
• In general terms the remedial work is dependent on the severity of the problem and the specific type of wall tie within the construction. Timberwise have an extensive range of high quality stainless steel remedial wall ties to suit almost any application.
• Once completed our remedial works are left to a very high cosmetic standard.

The video below demonstrates the installation of cavity wall ties:

Our range of ties includes:

• Mechanical Ties (Mechanical/Mechanical)
  This kind of wall tie has mechanically expanding ends that lock into each leaf of the wall. The advantage to this tie is that it can be load tested to ensure correct installation immediately after fitting.
• Resin Ties (Resin/Resin)
  As the name suggests this cavity wall tie is dependant on resin to bond it to the base material. This is an excellent solution where the base material is less substantial or unable to take the stress of a mechanical device.
• Combination Ties (Resin/Mechanical)
  For buildings that are constructed of mixed materials a combination of wall ties provides a robust solution for your replacement cavity wall tie needs.

Quality you can trust: Random insitu load testing is performed to ensure that the ties have correctly locked into place and meet the standards required. Testing coupled with long term guarantees gives you complete peace of mind.

Cavity Wall Tie Replacement - Associated Links

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