How Many Structural Connecter Per Plywood Roofing

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

How many structural connecter per plywood roofing.

If treated ecoply structural plywood is treated with either h3 2 cca copper chrome arsenate or h3 1 losp azole clear treatment. H3 1 losp is the standard preservative treatment for bd structural square. Ecoply structural plywood is available untreated or treated in accordance with as nzs 1604 3. The number you ll get is the number of sheets that you need.

Density of plywood is 34 36 pounds per cubic foot compared to osb at 38 42 pounds per cubic foot. Let s say that your roof has a total of 1 500 square feet. I roofer wanted 20 per sheet of plywood for labor. There is no way of knowing how many pieces of plywood need replaced until the tear off is complete.

Although the roof structure takes the majority of the weight plywood needs to be able to support the rest of the roofing system. I am paying for the materials. Foot and with a maximum of spacing of 16 inches between rafters. One 23 32 4 x 8 plywood piece would weigh approximately 67 lbs.

The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Structural i is unrelated to the bond classifications also known as exposure durability classifications exposure 1 and exterior. Divide that by 32 the square footage of each 4 8 plywood sheet.

This kind of plywood can be used on roofs with minimal load. Gauge between panels at the home depot. Using plywood for roof and floor sheathing can reduce risk of sagging roofs and floors. Steeper rather than flatter roofs will have lesser load per sq.

This carries enough structural integrity for most roof loads. In roofing plywood is often selected due to its strength. It is formed from multiple layers of wood bonded together with a glue and the grains run in alternate directions through each layer which ensures the board s strength is. Acquire the simpson strong tie pscl 7 16 in.

Why is plywood used in roofing. Additional plywood clips can be added to maximize load bearing in a specific area but the minimum clip placement described should be maintained in general. In many applications a substitution of rated sheathing that is 1 8 perf cat thicker than the specified structural i will result in comparable performance. 02 16 2007 04 33 pm.

Galvanized 20 gauge steel plywood clips 250 pack pscl 7 16 r250 20 gauge steel construction creates a 1 8 in. Plywood has structural strength in only one direction osb in two. Proper structural function of the clips require they match the thickness of the plywood panels being used. I understand the more plywood that needs to be replaced the more labor is involved and the roofer has the make sure his labor costs are covered.