Flat Roof Plywood Sheathing

15 32 cat ps1 09 square structural douglas fir sheathing application as 4 x 8.

Flat roof plywood sheathing. Every piece meets the highest grading standards for strength and appearance. Installing sheathing on a flat roof is much easier than working on a peaked roof. Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.

For pricing and availability. One side is usually better quality than the other c in this case. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. So dividing the area of the roof by 32 will give you the number of sheets needed.

Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. A 4 8 sheet of plywood is 32 ft 2. That s considered to be the minimum. Roof sheathing or decking is one of those elements.

This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn t have too much load. Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot. That s considered to be the minimum. For example if your roof is 1 500 ft 2 then it will take 47 sheets of plywood to sheath it.

The common grade of plywood for roof sheathing is cdx. It adds proven performance and durability to new homes room additions and renovations. Severe weather 1 2 in common southern yellow pine plywood sheathing application as 4 x 8. As a quick primer in plywood each side is rated from a to d.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Zip system panels install fast and stay flat for a roof that looks as good as it performs. Zip system sheathing and tape provides a water resistant durable underlayment for many finished roof coverings including metal tile and asphalt shingles fiberglass shingles and cedar shingles. A is smooth and knot free while d the lowest quality has missing knots and cracks.