Typically made of polyurethane, polystyrene or polyisocyanurate ... This type of insulation is made of a substrate material like kraft paper, foam board or polyethylene covered by a reflective ...

It’s a straightforward concept: Once your home’s exterior walls are exposed, you can affix a material like rigid foam insulation ... a 4x8 polyisocyanurate board from Johns Manville costs ...

When it comes to insulation boards for vegetated roofs, there are several choices available but polyisocyanurate (also known as polyiso ... Polyiso has very low water absorption because it is a closed ...

Read on to find out the strengths of various insulation boards, where to buy them and how they are best applied around the home. Insulation boards are rigid boards or sheets made of foamed polystyrene ...

Cons: Foam board insulation can be harder to install snugly in unusually shaped spaces, leaving gaps for air to flow. To create an effective air and moisture seal, you need to tape all seams ...

The average cost of blown-in insulation is between $1.65 and $3.80 per square foot. Foam board, or rigid foam board insulation, is best for insulating the exterior of your home and is installed ...

If you don’t want to take down the ceiling, you can add rigid foam board insulation above the roof sheathing. But that means taking off the roofing and then installing a new roof. If you need a ...

Foam board is made from polyisocyanurate, polystyrene, or polyurethane and usually offers the highest level of insulation among products that can be DIY-installed. It is thinner than material that ...