Certainteed requires that the minimum thickness for a plywood deck be ½”:
Certainteed requires that the minimum thickness of a OSB deck be 7/16”.
Spacing panels 1/8” apart on all sides can be a factor to prevent buckling.
Wide Boards can cause buckling.
Ventilated nail-base roof insulation can not be used over cathedral-type ceilings.
Certainteed allows the application of a nailable deck over an unacceptable deck.
The slope of a deck has no effect on the materials specified for the roof.
An inspection conducted to decide if a roof should be torn off should always include an examination of the rafters and the attic side of the sheathing.
Before tearing off a roof, drop cloths should be placed over everything in the attic because:
A vapor barrier is required during the time between tear off and the installation of underlayment.
They catch dirt that will fall through the spaces between the sections of sheathing during tear-off and the installation of the new roof.