Roof Sheathing Designs

Plywood and oriented strand board osb are used in roof sheathing systems ranging from simple single family residences to large commercial buildings.

Roof sheathing designs.

Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for. It spans the rafters to support the roofing and in the case of panel sheathing such as plywood or osb it acts as a diaphragm with the walls to resist horizontal loads. Blocking of unsupported edges may be required near gables ridges and eaves follow design drawings. Common roof sheathing applications and installation recommendations are described in the related publications listed at right.

For this type of wood it is most often seen when building a hostel in vietnam you can refer to alo nha tro for more details. Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof. Use panels no smaller than 4 feet long. Slate and slate type shingles.

Correct installation of roof sheathing will ensure the best performance and help reduce complaints and callbacks. Staples shall be not less than 21 gage. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. Often incorporating two or more designs for aesthetics and practical reasons combination roofs can feature a range of styles.

Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction and every piece meets the highest grading standards for strength and appearance. Unless otherwise indicated by the panel manufacturer leave a 1 8 inch gap. A clerestory and hip roof for example. Sheathing layout install sheathing panels according to the recommendations of the engineered wood association apa.

In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. For prescriptive roof sheathing applications provisions of the american wood council s awc s wood frame construction manual wfcm figure 2 1g or 2 1h can be followed. It adds proven performance and durability to new homes room additions and renovations. Fasteners for asphalt shingles shall be galvanized stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 2 67 mm shank with a minimum 3 8 inch diameter 9 5 mm head of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 1 mm into the roof sheathing.

Cap nail shank and cap staple legs shall have a length sufficient to penetrate through the roof sheathing or not less than 3 4 inch into the roof sheathing. For all other conditions the basic capacity checks of awc s national design specification nds for wood construction chapter 9 apply. A combination roof is quite literally a combination of types of roofs.