Air Seal Attic Joysts Spray Foam

Most people just add insulation to their attic this will not stop the escaping warm air.

Air seal attic joysts spray foam.

An unvented attic air sealed with spray foam insulation limits outdoor air entry and as a result indoor combustion air should not be considered available for fuel fired combustion appliances located within the attic space. If for whatever reason you have decided to install insulation on the attic floor rather than at the sloped roof there is no need for spray foam. Air seal your attic for energy savings. Just put it back into place.

Hold the insta flow dispenser at least 6 inches from the spray area and pull the trigger when ready. Keep in mind that foam cures in just 30 60 seconds. Just perform ordinary air sealing at the ceiling plane and then install cellulose insulation. When you re done sealing your attic bypasses push the insulation back into place with an old broom handle or stick as you back out of the attic.

Without air sealing your attic you are allowing warm air to escape from your home carrying with it your hard earned winter heating money. Closed cell spf is an effective thermal air moisture and vapor barrier. Seal small gaps with caulk up to inch and expandable foam spray up to 3 inches. Once you seal the air leak with caulk or expandable foam it s not necessary to replace the insulation.

Oh and when you put it in your attic spray foam insulates the attic itself. Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11. Closed cell spray polyurethane foam spf is an excellent choice for insulating attics and rim joists. Attics are filled with unusual shapes gaps and spaces where air bubbles can form when spraying foam insulation between the joists.

Move in a steady stroke around the joist. This approach is much cheaper than using spray foam. Compared to traditional insulation whether fiberglass or cellulose spray foam has the potential to provide better performance via its air sealing properties high r values per inch of thickness and in the case of closed cell spray foam ability to repel moisture. Wear gloves and clothes you don t care about.

The expansive nature of this product can reduce the chances that there are pockets that can reduce the r value of the installation but it does not eliminate them.