Flat Roof Sheathing Material

Osb is lightweight cheap and strong enough to resist bending or breaking should someone be walking on the roof.

Flat roof sheathing material. The sheathing is the base you lay over the rafters that holds the roofing felt and shingles. There are generally 5 to 6 different routes to take regarding the materials needed for roofing a flat surface. If you re in search of quotes for a roof sheathing job improvenet can put you in touch with up to four local contractors for free. Plywood is a bit more expensive than osb but is usually stronger.

If your roof has triangles and other shapes you ll need to use a calculator to find the square footage. Oriented strand board osb is one of the most popular materials for roof sheathing. Pvc roofs are especially strong and durable featuring a minimum breaking point of 300 pounds per inch compared to the industry recommended 200 ppi. Roof sheathing may also be constructed of plywood.

By shala munroe installing sheathing on a flat roof is much easier than working on a peaked roof. Loads will vary with the pitch of the roof. It has the advantage of multiple layers but needs fewer layers than built up roofing and is less messy to apply. If your roof carries a heavier load like if there s less pitch and or it snows in your area a roofer may recommend the use of the inch variety.

A half inch cdx plywood is often used with rafter with 24 inch spacing. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Zip system panels install fast and stay flat for a roof that looks as good as it performs. Pvc single ply membrane arguably the most popular of all flat roofing materials some contractors even install only pvc membranes for higher end residential installations pvc membranes are a single layer of thermoplastic material.

A 4 8 sheet of plywood is 32 ft 2. 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. The common grade of plywood for roof sheathing is cdx. And if you re still wondering what roof sheathing is and what materials are typically used read on and satisfy your curiosity.

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. With edge support and the same snow load 3 8 inch osb can be used. This flat roofing material is popular because it uses trusted weatherproofing materials asphalt reinforced with polymers. So dividing the area of the roof by 32 will give you the number of sheets needed.

Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed. This is a popular option because it presents homeowners with functional but affordable roof sheathing. Comes in standard 4 by 8 foot sheets is strong durable and relatively light. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.