How Many Structural Connecter Per Plywood Roofing

I am paying for the materials.

How many structural connecter per plywood roofing.

Why is plywood used in roofing. Let s say that your roof has a total of 1 500 square feet. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. Proper structural function of the clips require they match the thickness of the plywood panels being used.

In roofing plywood is often selected due to its strength. Plywood has structural strength in only one direction osb in two. Galvanized 20 gauge steel plywood clips 250 pack pscl 7 16 r250 20 gauge steel construction creates a 1 8 in. 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.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. 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. My roof needs a complete tear off and bad plywood replaced.

In this case you need 47 sheets rounded off from 46 88. The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch. Gauge between panels at the home depot. Structural i is unrelated to the bond classifications also known as exposure durability classifications exposure 1 and exterior.

The number you ll get is the number of sheets that you need. 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. 02 16 2007 04 33 pm. I roofer wanted 20 per sheet of plywood for labor.

Steeper rather than flatter roofs will have lesser load per sq. 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. Divide that by 32 the square footage of each 4 8 plywood sheet. One 23 32 4 x 8 plywood piece would weigh approximately 67 lbs.

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. Foot and with a maximum of spacing of 16 inches between rafters. This kind of plywood can be used on roofs with minimal load. Although the roof structure takes the majority of the weight plywood needs to be able to support the rest of the roofing system.

Plywood clips are available in sizes to match nominal plywood thicknesses. There is no way of knowing how many pieces of plywood need replaced until the tear off is complete. This carries enough structural integrity for most roof loads. Using plywood for roof and floor sheathing can reduce risk of sagging roofs and floors.