We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Best Overall Sika Rmax Pro Select Polyiso Insulation Board See It Getting hit ...

Installing insulation in walls is one of the most efficient and cost-effective ways to save energy in your home. Research shows that, on average, adding insulation can save up to 20% on your home ...

Where commonly used: Basement and crawl space walls, and as continuous insulation on a house’s exterior. Cost: $0.25-$2 per board foot, on average Foam board insulation.

When it comes to what is best for external wall insulation, common ivy (Hedera helix) is a good bet, keeping homes warmer in the winter and cooler in the summer (Letters, 11 June).

Fitting exterior walls with insulation will reduce heat loss, which in turn should help cut utility bills. While insulating walls and ceilings is a great idea, there are a number of different ...