Seal Roof In Attic

Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls.

Seal roof in attic.

Step 5 use a caulking gun to apply caulk to seal any holes that appear in the roof. Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11. The number one prep step. Use a putty knife to spread the tar into the leaking hole on the inside of your roof.

Flex sealis a rubberized coating that sprays out the liquid seeping into those pesky holes in your roof. Even though most of the gaps spilling warm air into your attic are buried under insulation you might be able to find evidence of them. Seal air leaks where bearing or partition walls meet the ceiling in holes made for electrical wiring and where your attic floor meets the outside walls. Map the roof leak.

Let the wet areas dry and then apply the patch to the underside of the roof with a putty knife. Look for areas where the insulation is darkened. Begin by removing the shingles down to the wood sheathing and slip a strip of adhesive ice and water barrier available where roofing repair products are sold under the soffit main roof joint. Do not use spray foam.

We also offer flex seal liquid a liquid form that can be poured brushed or rolled on with a paint roller. Seal air leaks gaps in the attic or between the lower floors and the attic will let heated or cooled air escape to the great unconditioned outdoors making any insulation you add essentially useless. And the extra heat is not just a summer concern come winter hot attic air can melt snow on the roof. Depending on how the roofs join you may have to cut a slot to work it in far enough.

Place the shingle or plywood onto the tar and spread more of the tar around the edges of your patch. If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the opening. If air can get in odds are moisture can as. Find a diagram of common air leaks here here s a quick primer on fixing draft prone spots.

Use enough of the roof patch to liberally cover the leaky area. Sealed attics trap excessive heat and moisture which can lead to reduced shingle life. Seal with silicone caulk. Seal the gap between the flue and metal flashing with special high temperature caulk.

This construction approach was first used in the 1970s and it has been implemented much more widely since it was first included in the international code council s icc model building code in 2007 irc section 806 4.