Oriented strand board or osb is a sheet panel product similar to plywood made from layers of wood strands that are oriented in opposite directions.
Osb roofing smooth side up.
Structurally it doesn t make a difference but if the grade stamp faces up it will be covered by the roofing material and the building inspector will not be able to confirm the right osb panel has.
Roofing on this old house.
Avoid installing osb with the textured side down.
Avoid putting osb on wet roof trusses.
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.
The proper way to install osb.
The screened surface also provides a little more.
Roof trusses must be dry when sheathing a roof with osb to prevent mold growth in the roof and coverage gaps as the trusses dry and shrink.
The osb roof panels should be installed with the grade stamp facing into the attic and the screened surface with the nail guide lines facing up.
Can oriented strand board osb be used for roofing.
Follow this old house online.
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.
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.