Osb2 And Osb3 Shed Roof

For shed construction there are two commonly used grades of osb.

Osb2 and osb3 shed roof.

The two grades of board look very similar and can only be distinguished visually by markings which are sprayed on to the board. I need to reboard my shed roof before i fiberglass it or felt it haven t decided yet. Uses include structural roofing flooring panels agricultural buildings portable buildings type. Osb would be fine for a shed roof 18mm ply is going to be expensive.

With the felt in top you have a very sturdy roof that wil last for years. En 300 pack quantity. Typical markings on osb panel. Direction of text should run in direction of span.

To be honest i want to spend as little as i need to. 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. Does it has to be osb3 or will osb2 do. I need to cover approx 18m2.

Osb is so strong in fact that it is now used for about 70 of all floor wall and roof sheathing in north america and there are two different types of osb osb2 and osb3. Will the thickness make a difference. 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. Osb3 is just as good as regular shuttering ply.

With the osb i normally give it a good couple of coats treatment and or acrypol if you can get it i got shed roof ps that have lasted absolute years with this treatment. 9mm 11mm or 18mm. Osb3 sheets certifications met. Interior or exterior use structural.

So does it matter on the what timber sheets i use to board the roof. 16 07 kg moisture resistant. No interior or exterior use. The screened surface also provides a little more.