Cavity Wall Extraction

Cavity wall clearance is the process whereby debris, blockages or old insulating material is removed from a cavity. Such obstructions are found in a number of properties and can often causes issues within the home, such as creating cold spots and damp problems.Most houses built in the UK since 1930 are constructed with cavity walls: walls formed from two thicknesses of masonry with a gap between them, held together by air ties.

The construction method is intended to ensure that all moisture that may enter the cavity simply drains to the footings and safely away from the property, without ever crossing to the inner wall.

For this to work effectively, the cavity must remain completely free of debris and blockages, as such obstructions can lead to a bridge being created in the air space between the two thicknesses of masonry, resulting in moisture being transferred to inner walls rather than draining as intended. Such moisture penetration can cause a range of problems in the home, such as damp and mould issues.

This is why damp shop direct Ltd has had after a lot of issues started doing cavity wall clearance.

This solution can remove blockages in a cavity wall, ensuring the cavity operates as it should in addition to preparing it for the installation of cavity wall insulation..

Additionally we regularly remove new and old cavity wall insulation material, due to It being poorly fitted or the existing material has become damaged in some way.

How do obstructions form?

Obstructions in a cavity wall can form for many reasons, including:

The cavity had not been cleared properly during construction
Building work, such as replacing windows or fitting a conservatory, result in debris being left behind in the cavity
During general home improvements, such as fitting a vent of balanced boiler flue
Poorly fitted insulation
Insulation contractors not using brushes to stop airbricks from blocking
Corroded cavity wall ties

Features and benefits

The system has a number of benefits:

We can do a full and partial cavity clearance
Suitable for use on most cavity constructed properties
Resolves existing damp transference issues through clearance of existing debris
No maintenance is required

How do we diagnose type of issues?

We have a variety of latest technology for diagnosing which damp you have:

Why use Damp Shop Services for your cavity wall troubles?

We have over 5 years’ experience in this field working on some very valuable houses in and around Wiltshire, Gloucester, Cheltenham, Cirencester and Oxford
Approved contractor for Wykamol since 2010 damp and timber (click to view)
Approved contractor for Permagard damp and timber
Approved contractor Triton chemicals in damp and timber
£2,000,000 public liability insurance (Click to View)
Member of the Federation of small businesses

Training was carried out by

Triton Chemicals for Damp control and Timber Preservation
Nebosh health and safety general Certificate (click to view)
IOSH Managing health and safety in work place
Trained in safe use of chemicals in the work place COSHH
The system used is worked to BS5268 part 5 and in strict accordance with the health and safety executive

What to do next:

If you have damp issues, the involves an external wall with cavity then this could be your cause like to upgrade your existing insulation or have any other reason to believe your cavity may require clearing, please book a free survey with us using the button to the right.

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