Flat Roof Plywood Sheathing

The common grade of plywood for roof sheathing is cdx.

Flat roof plywood sheathing. It will be a good idea to get an extra few sheets of plywood when ordering to allow for waste and off cuts. So dividing the area of the roof by 32 will give you the number of sheets needed. With edge support and the same snow load 3 8 inch osb can be used. For pricing and availability.

Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction. Installing sheathing on a flat roof is much easier than working on a peaked roof. Severe weather 1 2 in common southern yellow pine plywood sheathing application as 4 x 8. That s considered to be the minimum.

Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. A 4 8 sheet of plywood is 32 ft 2. For example if your roof is 1 500 ft 2 then it will take 47 sheets of plywood to sheath it. 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.

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. Every piece meets the highest grading standards for strength and appearance. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. It adds proven performance and durability to new homes room additions and renovations.

15 32 cat ps1 09 square structural douglas fir sheathing application as 4 x 8. A is smooth and knot free while d the lowest quality has missing knots and cracks. 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. 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. The sheathing is the base you lay over the rafters that holds the roofing felt and shingles. One side is usually better quality than the other c in this case. Zip system panels install fast and stay flat for a roof that looks as good as it performs.