Installing or replacing your home’s insulation ... The cost range for cellulose insulation is $0.60 to $2.30 per square foot. Polystyrene insulation is used to make foam boards or spray foam ...

and expanded polystyrene (EPS), which is often the cheapest. Cons: Foam board insulation can be harder to install snugly in unusually shaped spaces, leaving gaps for air to flow. To create an ...

Expanded or extruded polystyrene insulation boards are best suited for floor insulation. As they will be installed underneath the supporting floor, the boards need good compressive strength to handle ...

How to install cavity wall insulation Cavity-wall insulation costs and savings ... Commonly used insulating materials include mineral wool, polystyrene beads or polyurethane foam. The insulation is ...