Rain On Uncovered Roof Decking

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Rain on uncovered roof decking.

Shingle roofs are installed every day over wood decking that has been wet by rain. The underdeck ceiling system can turn the ugly space under your deck into an outdoor haven that s dry bright clean and enjoyable without costly reconstruction. That doesn t mean that an unexpected rain or drizzle as you indicated won t occur during the roof replacement. Ames contouring roof fabric.

It doesn t have to look like that. Most likely an unsightly mess of water stained crossboards and cobwebs. Unless the roof is leaking the line you see on the roof is an aesthetic problem but the cupped plywood is putting an added strain on the shingles either side of the visible line. Wood rot can and will start when the moisture content of the wood reaches 20 percent.

Moisture that passes this covering and seeps into the underlayment for the roof can cause leaks into the home and. Our osb is rated exposure 1 and that means that it will withstand normal delays in construction. If the surface underneath is wet mold and mildew may form leading to the disintegration of the subsurface and the roofing felt. If it starts to rain or drizzle the roofers should act quickly to cover your osb most likely with a tarp.

Roof decking sits beneath the shingles used to protect the house from the weather. Normal delays and the rain you indicated will not affect the structural properties of the panels. But wood rot is a slow process where the fungi start to grow and feed on the cellulose in the wood. Wrinkles and bubbles in the felt will create heat pockets that.

Certainly it would have been better to have covered the roof with a tarp or roofing felt before it rained. Ahem i ll give you a moment to appreciate my wittiness and compose a clev. Osb like all other wood will expand when exposed to moisture and i assume the contractor spaced the panels the required 1 8 along the 4 edges and installed h clips along the 8.