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.

Use a putty knife to spread the tar into the leaking hole on the inside of your roof. 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.

Luckily the flex seal family of products can help fix. Seal the gap between the flue and metal flashing with special high temperature caulk. The number one prep step. Find a diagram of common air leaks here here s a quick primer on fixing draft prone spots.

Sealed attics trap excessive heat and moisture which can lead to reduced shingle life. Flex sealis a rubberized coating that sprays out the liquid seeping into those pesky holes in your roof. Depending on how the roofs join you may have to cut a slot to work it in far enough. If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the opening.

Let the wet areas dry and then apply the patch to the underside of the roof with a putty knife. Step 5 use a caulking gun to apply caulk to seal any holes that appear in the roof. 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. 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.

Before you leave your attic use a measuring tape to roughly map out where the leak is so you can find it once the rain stops. Do not use spray foam. 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. 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.

Seal with silicone caulk. Use enough of the roof patch to liberally cover the leaky area. Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11. If air can get in odds are moisture can as.

Map the roof leak.