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.
The screened surface also provides a little more.
I want to use osb sheathing to side a shed on one side there is print that tells all the specs of the osb and seems smooth and says this side down but i find that this side is smooth and it is going to be painted with exterior paint.
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.
The other side is rough really rough with a cross patch and i assume that is the exposed exterior side but question it because i know how hard it is to.
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.
Avoid installing osb with the textured side down.
The proper way to install osb.
I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it.
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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.
Avoid putting osb on wet roof trusses.
The textured surface helps flashing and waterproof underlay stay in place effectively.
Install osb textured side up.
Roofing on this old house.
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