Insulation

Costs vary by type: loft insulation from £300-£600, cavity wall from £500-£1,500, and external wall from £5,000-£15,000 depending on property size.

Loft insulation takes 1-2 hours, cavity wall 2-3 hours, and external wall insulation 1-3 weeks depending on property size.

Yes. The Energy Saving Trust estimates you can save £100-£400 per year depending on the type of insulation installed.

It depends on your property. Loft insulation suits most homes with accessible lofts. Cavity wall insulation works for homes built after 1920 with unfilled cavities. External wall insulation is ideal for solid-wall properties. A surveyor can recommend the best option.

Yes. The Great British Insulation Scheme (GBIS) and ECO4 scheme provide funding for eligible households. You may qualify based on income, benefits, or if your home has a low energy rating. Your installer can check your eligibility.

Spray foam insulation can cause issues if incorrectly installed, including condensation, timber rot, and mortgage difficulties. Open-cell spray foam in lofts is particularly problematic. Always use a certified installer and check with your mortgage lender first.

Installing insulation in walls, floors, or roofs is subject to Building Regulations. A certified installer can self-certify compliance, or you may need a building control sign-off. Loft insulation laid between joists generally does not require approval.

Signs include high energy bills, cold walls or floors, rooms that are hard to heat, and condensation on windows. An EPC (Energy Performance Certificate) will show your home's insulation levels and recommend improvements.