GREAT STUFF™ Insulating Foam Sealant, GREAT STUFF PRO™ Insulating Foam Sealant or FROTHPAK™ Spray Foam Sealant can be used to seal the inside perimeter of edge joists.
How do you seal the edge bars with good stuff?
Commercially applied spray foam is considered the best method of sealing the edge joist area. Spray foam easily fills and seals any cracks and openings in the edge joist or band joist area. It is usually installed by a professional insulation contractor with the necessary mixing equipment.
What can I use for edge bars?
The International Residential Code (IRC) permits the use of exposed spray foam on edge joists (i.e. without a 15 minute thermal barrier such as drywall) as long as the thickness is less than 3¼ inches (see R314.5.11).
Can spray foam be used for edge joists?
Rigid foam is the best insulation for edge joists. We chose 2 inches. thick extruded polystyrene (R10). Do not use expanded polystyrene, which is a less effective air and moisture barrier.
Can you use Great Stuff for edge beams?
GREAT STUFF™ Insulating Foam Sealant, GREAT STUFF PRO™ Insulating Foam Sealant or FROTHPAK™ Spray Foam Sealant can be used to seal the inside perimeter of edge joists.
What wood is used for the edge beams?
Edge Joist Material and Sizing The traditional material for joists and edge joists is solid structural lumber, either 2×10 or 2×12. There are also joists made from engineered wood products such as OSB (Oriented Strand Board) or laminated wood.
What type of insulation is used for the edge joists?
Rigid foam is the best insulation for edge joists. We chose 2 inches. thick extruded polystyrene (R10). Do not use expanded polystyrene, which is a less effective air and moisture barrier.
Can spray foam be used for edge joists?
The International Residential Code (IRC) permits the use of exposed spray foam on edge joists (i.e. without a 15 minute thermal barrier such as drywall) as long as the thickness is less than 3¼ inches (see R314.5.11).
Should You Spray Foam Edge Bars?
In winter, when the edge joists are cold, condensation can cause mold and then rot. To avoid these problems, only airtight insulation, either rigid foam or spray-on polyurethane foam, should be used to insulate the inside of an edge joist. 12
How do I insulate a cornice with spray foam?
Rigid foam is the best insulation for edge joists. We chose 2 inches. thick extruded polystyrene (R10). Do not use expanded polystyrene, which is a less effective air and moisture barrier.
How can I insulate an edge beam?
Commercially applied spray foam is considered the best method of sealing the edge joist area. Spray foam easily fills and seals any cracks and openings in the edge joist or band joist area. It is usually installed by a professional insulation contractor with the necessary mixing equipment. 5