For walls built with two-by-sixes, use R-19 insulation. NOTE: R-19 insulation is 2-3/4 inches thicker than R-13 insulation and will add about 60% to the cost of the project.

Cellulose insulation is installed by blowing in loose-fill insulation using an insulation blower. It differs slightly from another type of cellulose insulation designed to be blown onto open walls, ...

Andrew Legge, CEO of Havelock Wool, a company that produces natural, sustainable building insulation made from wool, explains that a thin wall has a maximum thickness of 4.5 inches.

You won’t see as big of a return on investment by insulating walls. Spray-foam insulation is the best, but it’s not always feasible to use in hard-to-access structures.

Since 2008, more than three million homes have had cavity-wall insulation fitted under green energy schemes set up by the government. Energy suppliers were responsible for inspecting 5% of them to ...

It’s been recommended that we insulate our walls. The house was built in the 1940s. The interior walls have some very fine cracks, not a lot, but a few. We’re concerned about what […] ...

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).

Evaluation of green walls as a passive acoustic insulation system for buildings. Applied Acoustics, 2015; 89: 46 DOI: 10.1016/j.apacoust.2014.09.010 ...

I live in an old house (150 years plus) in Scotland. The property does not have cavity walls, therefore I cannot have cavity wall insulation. In all other respects the house is well insulated.