Insulating an attic is, by far ... wall and ceiling cavities that you cannot easily reach to install foam panels or blanket insulation. It is usually made up of rock wool and is blown into ...

For attic walls, the recommended R-value varies based on climate zones. Each type has pros and cons. For example, fiberglass insulation is cost-effective but less airtight, while spray foam ...

Related: The Real Reasons You Need Better Attic Insulation Yes, you can use blown-in insulation or injection foam for your wall joist space or spray foam insulation for the roof space. These ...