Cavity wall insulation
A cost-effective way to improve the energy performance of your home.
Cavity wall insulation involves filling the gap, or cavity, between your home's inner and outer walls with insulating material to prevent heat loss and make your home more energy efficient. Cavity wall insulation is a popular and cost-effective way to improve your home's energy performance of your home.
Which homes are suitable for cavity wall insulation
While cavity wall insulation is suitable for many properties, it isn’t suitable for all homes. For example, it may be unsuitable where there are unresolved damp issues, structural defects or narrow cavities. It may also be unsuitable for solid brick properties or homes of non-standard construction, such as timber or steel-framed buildings.
An assessment by a qualified and accredited professional can help determine whether cavity wall insulation is suitable for your home. You can find qualified professionals by visiting the TrustMark website.
You can often can carry out a simple borescope inspection to check whether insulation has been installed and assess its condition. This involves drilling a small hole through the mortar joint, inserting a camera to inspect the cavity, then filling the hole and making good. tell if your home has cavity walls by looking at the pattern of the brickwork. Properties with cavity walls usually have a uniform pattern, with all the bricks laid lengthways. If your walls are covered with render, cladding or another external finish, you should seek advice from a qualified professional.
If your home, or any extensions, were built after 1990, cavity wall insulation may already be present. If you’re unsure, a qualified professional
Ventilation
As with all insulation upgrades, it’s important that your home has adequate ventilation to manage moisture levels and maintain good indoor air quality. In some cases, installers may also recommend improvements such as trickle vents in windows or upgraded extractor fans. Existing ventilation openings should not be blocked or sealed as part of the works.
There are grants and projects ongoing across the county to help residents make significant energy-efficiency improvements to their properties. This includes grants to fully fund such improvements for those in fuel poverty or on a low income. If you would like more information regarding these projects and grants, contact us or register your interest via our online form.