R49 insulation – Spray Foam Insulation

R-49-insulation

R49 insulation is typically 14–16.25 inches thick, depending on the type of insulation.

Types of R-49 insulation

• Fiberglass batt: Typically 14 inches thick. For example, Owens Corning R-49 Fiberglass Batt Insulation is 14 inches thick.
• Blown-in fiberglass: Typically 16.25 inches thick.
• Open cell spray foam: Typically 14.5 inches thick.
• Closed cell spray foam: Typically 7–8 inches thick.

How much R-49 insulation to use

• In colder climates, attics should have at least R-49 insulation.
• In warmer regions, attics may need R-38 or higher insulation.
• Adding insulation to under-insulated areas can help lower energy costs.

How to install R-49 insulation

• Blown-in insulation can reach all areas of an attic and can be added in precise levels.
• Sprayable foam insulation can seal air leaks.