Insulating exterior walls with new insulation in a hidden wall cavity during an upgrade is challenging. Insulating outside walls cavities with injection foam shows promise as one solution. It’s not ...

Getting hit with a huge utility bill is unpleasant, but it’s even worse when you know that it’s high due to heat or air conditioning loss through the doors, windows, or walls. Fitting exterior walls ...

A question appeared recently in your column about insulating an early 1900’s house from the inside. Your answer concerned the use of foam insulation and the application of rigid foam board to the ...

For any construction project in the 21st century, achieving energy-efficiency is a prime directive. Among the arsenal of tools available to builders charged with constructing exterior walls, insulated ...

I am renovating a house and the floor in our rec room gets very cold. We have an accessible crawl space below it. I would like to put up unfaced insulation between the floor joists and lay carpeting ...

Scientists in China have designed a solar self-insulated composite exterior wall panel, integrating a solar collector panel, PV panel, and insulation board. The proposed experimental setup has ...

Name one product you can have installed in your house that will literally pay for itself over time, adds value to the home and will provide additional year-round comfort in your cozy nest. What we are ...

Q: Our 1920s bungalow has a small front closet that is punched out from the wall of the house so that the box of the closet extends past the exterior walls. This leaves the three walls and floor in ...

Q. We purchased an older Victorian farmhouse (it’s more than 100 years old), and it has poor insulation. We’ve added insulation in the attic, but what can we do to insulate exterior walls better, ...

My townhouse back wall (south facing) in the kitchen is very cold. I’m looking for a way to airseal and insulate in the wall between the brick and the wall, without pulling out my whole kitchen. Has ...

Q. My older house has no insulation in the walls. A contractor wanted $6,000 to pump in insulation through holes in outside walls, but the price doesn’t include repainting the house. Can I do the job ...