Question: What do you use to sheath a roof?

What should you use for roof sheathing?

Typical types of wood used for roof sheathing are oriented strand board, known as OSB, and plywood, the most popular being OSB. 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. With edge support and the same snow load, 3/8-inch OSB can be used.

What do you use to sheath a shed roof?

CDX plywood is the most economical choice for decking your shed. For those of you that don’t know, CDX means that the plywood has a C face and a D face (A being the best). The X means that is has exterior grade glue. As long as this plywood doesn’t see any long term moisture it should work just fine.

What type of wood is used for roof sheathing?

Oriented strand board (OSB) – OSB is the most common type of material used for roof decking. It’s durable and readily available, and has relatively low costs. OSB is made of interwoven strands of wood bonded with adhesive.

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Is 7/16 OSB OK for roofing?

…or a non-laminated panel, such as this OSB. Either one is acceptable. The typical thickness of roof sheathing is about 7/16-inch, which is just under 1/2-inch. … If you find 3/8-inch plywood installed as roof sheathing, it’s a good idea to make your client aware of its presence.

Can I use screws for roof sheathing?

Screws can be used for even greater withdrawal strength, but should be sized by the building designer. Staples are not recommended for roof sheathing attachment in high-wind areas. … Oriented strand board (OSB) is one of the most popular materials for roof sheathing.

Can I use 1/2 inch plywood for shed roof?

If the shed is for light tools then 1/2 inch pressure treated plywood is acceptable. If the shed is for heavier storage, then pressure treated 3/4 inch exterior-grade CDX plywood is the best.

How do I sheath my roof myself?

  1. Step 1: Check That Rafter Ends Are Level for Nailing Surface. You want to be sure that the rafter ends form a straight line. …
  2. Step 2: Ventilate the Roof. …
  3. Step 3: Apply the Roof Sheathing Panels. …
  4. Step 4: Cover the Roof Sheathing with Shingle Underlayment Felt. …
  5. Step 5: Install the Roof Shingles.

Can I use OSB for a shed roof?

For an inexpensive, value option 9mm OSB can be used for your garden shed roof. Start by fitting the beam across the top of the shed, slotting it into the pre-cut grooves at the top of the two pointed ends on an apex shed (known as the gable ends).

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Should I use OSB or plywood for roof?

OSB takes longer than plywood to get saturated, but also takes much longer to dry out. When used as roof sheathing, this tendency to hold moisture means it will degrade faster than plywood when exposed to chronic leaks.

What is better for roof sheathing OSB or CDX?

CDX and OSB are used for almost similar things, but because they have different features, one is better applied in some tasks and the other one on other tasks. CDX is best for sub-flooring. … OSB also seems to be good for roof sheathing. But take care, it also requires that you use water-resistant coating at the edges.

What is the most common decking for residential roofs?

The 3 main types of roof decking material are concrete, wood, and steel. Each of these materials has different benefits and draw backs, however, the most commonly used type of roof decking is wood.

What OSB to use on roof?

Half-inch OSB is suitable for rafter spacings up to 24 inches, whether or not the edges are supported. Sheets must have a 1/8-inch expansion gap between them and should be secured to the rafters with 8d nails. The nails should be spaced 6 inches around the edges of a sheet and 12 inches in the middle.

What thickness of OSB do you use for roofing?

What is the Standard Roof Sheathing Thickness? Standard roof sheathing thickness is ½” to ⅝” thick. If you are using OSB for your roof deck, then ⅝” is the recommended thickness. For plywood, which is slightly stronger than strand board, ½” thick is appropriate.

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Which side of OSB goes down?

Which side of OSB subfloor goes up? “This side down” applies to when it’s used as subflooring. That side should be facing down, against the joists. When used as wall sheathing, that side should be against the studs.

Roofs and roofing