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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 ...

Q: Is it a good or bad idea to insulate house walls if the exterior is brick and the interior is plaster? It’s been recommended that we insulate our walls. The house was built in the 1940s. The ...

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 ...