Foam board or insulating boards are rigid panels of insulation that have a high R-value. Because they have a high R-value and can be used nearly anywhere in your home, foam board insulation is one of the most common types of insulation.
Best for floors, foundation and basement walls, interior and exterior wall sheathing and low-sloped ceilings.
Can be used to insulate almost any part of your home, from the roof down to the foundation.
Usually made from polystyrene, polyisocyanurate or polyurethane.
Sheathing reduces heat conduction through structural elements like wood and steel studs.
Great insulation choice for cold climates.
Typically more expensive per square foot than other insulations.
R-values range from R-4 to R-6.5 per inch of thickness.