Osb Roofing Problem

You can use an osb as a subfloor for sheathing roof decking and more.

Osb roofing problem. Roof leaks of course but also improper attic ventilation can cause condensation in the roof deck that can cause the osb to weaken. Unlike other materials an osb has a squarer and smaller dimension. You can have an osb that s larger than your plywood. Not just that but most an osb is manufactured in different sizes.

This means that the removal process will likely damage the osb roof decking so in most cases if you do have to remove peel and stick it is preferable to remove the osb decking and replace that as well. However it is also used in wall systems. The goal of a foil backed osb is to cool the air within the top layer of insulation in the attic or wall by emitting the radiant heat absorbed through the roof or exterior walls which reduces the delta t and lessens the overall energy use in a building. When the grade stamp is covered by roofing the building inspector will not be able to confirm that the correct osb roofing panel was used.

Watch this now to learn how to avoid this same pr. Despite its common use as such we don t recommend using osb for subfloors but that s really just for aesthetic reasons. This makes the material perfect for roofing and other types of use. As i described in the story of painters refusing to paint insulated homes building.

The problem though is that osb tends to deteriorate fairly rapidly if exposed to moisture losing fastener pull out resistance. Foil backed osb is applied mostly in attics. In the case of a subfloor deformations left in the osb after it dries can lead to wavy flooring. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8.

Osb roof panels should always be installed with the grade stamp facing into the attic and the screened surface with the nail guide lines facing up. Oriented strand board isn t plywood nor is it a type of particleboard fiberboard or wafer board and although it is a newcomer to a plywood. So what would expose it to moisture. Osb hit the market as we really started getting serious about insulation and air sealing.

Oriented strand board osb gets blamed for a lot of problems that are really the fault of the designers and builders. Part of the problem of course is the perrenial confusion between correlation and causality. New homes will usually see a few rainfalls before a roof is on and as noted above osb doesn t handle moisture well. The screened surface also provides a little more.

For pricing and availability. For pricing and availability. For the most part however removal simply isn t necessary. Can oriented strand board osb be used for roofing.