Cavity Wall Insulation Problems

Lots of people today believe that a cavity was introduced to protect against water from passing from the outside to the inside and that filling the cavity with an insulating material will allow this to take place. Properties were constructed with a cavity since they are less costly and quicker to construct. If filling the cavity with insulation brought on problems, building regulations (which came into effect in 1982) would not specify that all new properties are fitted with cavity wall insulation. In addition, if it did bring about a significant number of issues, the Government and Utility Businesses would not be spending billions of pounds insulating older properties, as they have accomplished given that the late 1990’s.

Does cavity wall insulation trigger damp?
If the property is surveyed correctly, cavity wall insulation will not cause damp. Problems can arise if the property is in an exposed place exactly where rainwater persistently comes into get in touch with with the external brickwork. The surveyor will check the exposure and might propose an alternative product or even advise against possessing cavity wall insulation installed. If the cavity consists of rubble or there are any other ‘bridges’ across the cavity, damp spots can seem inside the house. This is known as cold-bridging since the internal wall surfaces will be colder in these areas. For the duration of the survey, a compact inspection hole is drilled in every wall to assure that there is no rubble or other obstructions inside the cavity. Broken guttering, drainpipes or brickwork in poor situation can also trigger complications but once again, the surveyor will verify and advise repairs prior to the work is carried out. If there is already damp present, you need to have this checked and remedied by a builder just before having a cavity wall insulation survey. Condensation on internal walls brought on by poor ventilation, excess water vapour, etc. can be eliminated or reduced by possessing cavity wall insulation fitted.

Will installing cavity wall insulation damage my brickwork?
In the vast majority of situations, obtaining cavity wall insulation installed will not cause damage to the brickwork. The insulation is fitted by drilling holes the size of a 20p piece amongst the T-joints in the cement. Drilling can take small chips out of the brick corners but as soon as the holes are re-filled with colour matched cement, these chips will be barely noticeable. Quite few properties have bricks with excellent corners so it is normally very complicated to inform after the work has been completed. If the bricks have ideal square corners and the cement gaps are narrow (under 10mm) then it may well be more apparent. The surveyor will be capable to advise you if installing cavity wall insulation is probably to impact the appearance of your home.

What if my house is rendered?
The only substantial issues that can arise are if the render is loose but the surveyor will make confident it is in great condition. Holes that are around the size of a 20p piece will be drilled into the walls and as soon as the insulation is installed, they will be filled with cement. If the render is painted, the cement will be smoothed over. Painting is not usually undertaken by cavity wall installers and as the paint may possibly have weathered, it may be important to absolutely repaint rather than touch-up. If the house is pebble-dashed, installers will push some little stones (that have currently come loose and gathered at the base of the walls) into the colour-matched cement.

Can cavity wall insulation result in ventilation challenges?
Installing Spouwmuurisolatie does cut down the natural air flow into the home. If you have appliances that consume a lot of oxygen such as an open fire, it may perhaps be vital to match a vent, generally into an external wall. The surveyor will advise you if a vent is expected.

Is there any protection against points going wrong?
A accountable company will make certain that all their cavity wall installers are registered with CIGA (the Cavity Insulation Assure Agency), an independent organisation. Following the installation, a guarantee will be issued that is valid for a period of 25 years. If troubles take place, you should really go back to the original installer who is obliged to right any issues. If this is not achievable, CIGA will appoint yet another contractor and choose up the expense.