How Many Structural Connecter Per Plywood Roofing

Structural i is unrelated to the bond classifications also known as exposure durability classifications exposure 1 and exterior.

How many structural connecter per plywood roofing. Using plywood for roof and floor sheathing can reduce risk of sagging roofs and floors. 02 16 2007 04 33 pm. Density of plywood is 34 36 pounds per cubic foot compared to osb at 38 42 pounds per cubic foot. The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch.

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. Foot and with a maximum of spacing of 16 inches between rafters. Although the roof structure takes the majority of the weight plywood needs to be able to support the rest of the roofing system. Proper structural function of the clips require they match the thickness of the plywood panels being used.

Galvanized 20 gauge steel plywood clips 250 pack pscl 7 16 r250 20 gauge steel construction creates a 1 8 in. There is no way of knowing how many pieces of plywood need replaced until the tear off is complete. 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. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.

Why is plywood used in roofing. This kind of plywood can be used on roofs with minimal load. In this case you need 47 sheets rounded off from 46 88. Gauge between panels at the home depot.

Steeper rather than flatter roofs will have lesser load per sq. H3 1 losp is the standard preservative treatment for bd structural square. My roof needs a complete tear off and bad plywood replaced. Divide that by 32 the square footage of each 4 8 plywood sheet.

If treated ecoply structural plywood is treated with either h3 2 cca copper chrome arsenate or h3 1 losp azole clear treatment. Let s say that your roof has a total of 1 500 square feet. In roofing plywood is often selected due to its strength. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

This carries enough structural integrity for most roof loads. The number you ll get is the number of sheets that you need. Acquire the simpson strong tie pscl 7 16 in. 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.

One 23 32 4 x 8 plywood piece would weigh approximately 67 lbs. 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. I roofer wanted 20 per sheet of plywood for labor. Plywood has structural strength in only one direction osb in two.