Cavity wall insulation is an inexpensive and quick way to improve your home’s energy efficiency. It stops hot air escaping from your walls, so your heating doesn’t have to work as hard to keep you warm. That means you’ll use less energy and cut your carbon footprint.
In many cases the cost of installing cavity wall insulation will be paid back within five years by savings on energy bills. You’ll also be protecting yourself against any future energy price rises.
Your installer will carry out a pre-installation assessment to ensure your property is suitable for cavity wall insulation. Then, on installation day they’ll drill holes in your external walls and inject the insulation material into each cavity. The whole process usually takes a couple of hours, with minimal disruption to your daily life.
Once the insulation has been installed your installer should fill any gaps and seal the holed in sections. Then, they should spray a ‘damp proofing’ chemical into each gap to make sure no damp bridging occurs.
You can choose from a variety of different materials for your cavity wall insulation, but the standard options include mineral wool spun from rock or glass, urea formaldehyde foam and expanded polystyrene beads. If you’re concerned about the environmental impact, then you might want to opt for a more environmentally friendly solution such as Warmcel 500 made from recycled newspaper.
It’s important to find a contractor that is registered with a professional body such as the Kiwa CWI Installer Assessment & Surveillance Scheme, Cavity Insulation Guarantee Agency (CIGA) or National Insulation Association (NIA). This ensures they’ll have been checked and approved for compliance with stringent technical standards. cavity wall installer