3 Plywood Roof

My roofer replaced the entire plywood deck on my house this past summer.

3 plywood roof. I am correct to believe. This kind of plywood can be used on roofs with minimal load. 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. I cannot help but think the 4 ply would have been more unlikely to buckle or bow.

However you may need to consider bolstering the plywood thickness for a roof that has a higher load. The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch. Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for. While in my attic the other day i noticed he used 1 2 3 ply cdx instead of 4 ply.

Osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof design. It adds proven performance and durability to new homes room additions and renovations. Our contract specifically stated the use of 1 2 4 ply cdx plywood. In this case plywood should be a minimum of 3 8 inch thick.

Plywood is made with three or more layers of thin wood glued together with the grain alternating. Although specialty plywood can have any number of plies above three most plywood is categorized as 3 ply 5 ply or multi ply. I haven t had any problems and the house is 40 years. I am planning to have a new roof installed and currently have 3 8 plywood supported by trusses 24 apart.

A roof that lays practically flat will have a much heavier load than a steeper roof that allows rain snow and ice to roll right off. It is typically made in 4 by 8 foot sheets although longer panels are available for special. Steeper rather than flatter roofs will have lesser load per sq. Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 9 5 mm head complying with astm f1667 of a length to penetrate through the roofing materials and not less than 3 4 inch 19 1 mm into the roof sheathing.

I also recently noticed some plywood buckling on the new pieces. Foot and with a maximum of spacing of 16 inches between rafters. The minimum thickness of plywood used for roofing is 3 8 th of an inch. It is about 2 to 3 millimeters thick and is generally used indoors since it looks more decorative than thicker plywood boards.