Osb2 And Osb3 Shed Roof

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

Osb2 and osb3 shed roof.

Will the thickness make a difference. 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. So does it matter on the what timber sheets i use to board the roof. With the felt in top you have a very sturdy roof that wil last for years.

Typical markings on osb panel. I need to cover approx 18m2. I need to reboard my shed roof before i fiberglass it or felt it haven t decided yet. 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.

No interior or exterior use. 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. To be honest i want to spend as little as i need to. 9mm 11mm or 18mm.

Interior or exterior use structural. Uses include structural roofing flooring panels agricultural buildings portable buildings type. Direction of text should run in direction of span. En 300 pack quantity.

Does it has to be osb3 or will osb2 do. 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. The screened surface also provides a little more. Osb2 is great for structural non load bearing projects in dry conditions whereas osb3 performs better for structural load bearing use and for use in humid conditions.

The two grades of board look very similar and can only be distinguished visually by markings which are sprayed on to the board. I roofed my stable with 11mm sheets covered with cheap shed kennel felt three years ago. 16 07 kg moisture resistant. Osb would be fine for a shed roof 18mm ply is going to be expensive.