Air Seal Attic Joysts Spray Foam

Hold the insta flow dispenser at least 6 inches from the spray area and pull the trigger when ready.

Air seal attic joysts spray foam. In a vented attic all of that expensive airflow is lost to the environment. Move in a steady stroke around the joist. When properly applied to a thickness of one inch or more spray foam insulation is an effective air barrier preventing air leakage that creates drafty conditions and reduces energy efficiency. Push down on the ejector to remove the nozzle once spraying is complete.

Again cover with insulation when you re done. It provides a seal that is air tight. Unvented attic assemblies unvented attics rely on an air impermeable insulation installed to the roof deck s underside i e. When spray foam insulation is applied to your attic then you will create a fast seal thanks to the expansive nature of this product.

Closed cell spf is an effective thermal air moisture and vapor barrier. Clean product from the dispenser with a cloth and apply petroleum jelly one last time. When we seal the attic with spray foam it s as tight as a butter tub. One huge benefit of the spray foam insulated attic is that conditioned air leakage from the ac furnace duct system is contained and used to condition the attic.

Cut a 24 inch long piece from a batt of fiberglass insulation and place it at the bottom of a 13 gallon plastic garbage bag. Keep in mind that foam cures in just 30 60 seconds. Attic ceiling to stop airborne moisture from reaching a cold surface and condensing inside the building envelope in this design insulation effectively separates the interior and exterior spaces while slowing down moisture flow so the dewpoint is not achieved within.