Roof Plywood Warped

The simple fact is that misaligned or poorly fastened panel edges in your roof deck can cause lines steps warping and bowing that can t be hidden or masked by the best atlanta roofing contractor or the thickest dimensional shingles.

Roof plywood warped.

Chances are the shingles on your roof were attached on top of a plywood base. Most construction sites will consider the use of either osb or plywood for the roof. Poor installation may also create movement in the plywood. The bowing that occurs is actually the plywood shrinking.

Vent needs to be run out the roof not the soffit. When it comes to choosing what kind of plywood you need for the roof it is important to understand the basic categories that you can choose from. Even though it isn t visible it is very important to the structure. At my expense of.

The plywood might also become warped itself if it becomes wet which could happen in the case of a roof leak. Plywood in a roof deck creates a warped effect when holes in the exterior allow water inside your home. An improperly installed roof deck or the sheets of plywood that are underneath your roofing material could result in the plywood shifting. He says it all has to be torn off and replaced with plywood.

What kind of plywood for the roof. Plywood pieces can warp if they have been improperly stored or exposed to moisture. Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. Sometimes referred to as roof sheathing or a roof deck this plywood acts as a foundation for the layers of underlay and the shingles on your roof and connects the roof to the frame of the house.

You can flatten them again with hot water and a warm environment. Be careful if you are inspecting the roof yourself as a warped roof is potentially dangerous to walk on. Recently had hail damage to my asphalt shingles. The plywood is nailed to the roof rafters and unless the builder used a tongue and groove plywood or h clips the long edge can warp in between each rafter.

It is important to use a reputable trusted contractor for your roof. The roofer has been tearing the old roof off and has found that the sheathing is dimensional lumber. These include weaknesses in the overall structure. Only other way is to go back and add blocking to support it where it s sagging.

He says it is not up to code and he has no choice. Plywood s not going to straighten back out needs to be replaced. Very common to miss a few spots when nailing the sheathing not an issue most of the time unless they missed a whole row. Internachi describes some of the effects multiple layers of roofing can have on a home.

Possible causes movement of the roof deck. Poor installation can result in a wavy roof. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements.