How Many Structural Connecter Per Plywood Roofing

Why is plywood used in roofing.

How many structural connecter per plywood roofing.

There is no way of knowing how many pieces of plywood need replaced until the tear off is complete. 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. Steeper rather than flatter roofs will have lesser load per sq.

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. This kind of plywood can be used on roofs with minimal load. Divide that by 32 the square footage of each 4 8 plywood sheet. In roofing plywood is often selected due to its strength.

Using plywood for roof and floor sheathing can reduce risk of sagging roofs and floors. 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. Proper structural function of the clips require they match the thickness of the plywood panels being used. One 23 32 4 x 8 plywood piece would weigh approximately 67 lbs.

Gauge between panels at the home depot. My roof needs a complete tear off and bad plywood replaced. Let s say that your roof has a total of 1 500 square feet. 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 clips are available in sizes to match nominal plywood thicknesses. I roofer wanted 20 per sheet of plywood for labor. 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. I am paying for the materials. Acquire the simpson strong tie pscl 7 16 in. Ecoply structural plywood is available untreated or treated in accordance with as nzs 1604 3.

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. Although the roof structure takes the majority of the weight plywood needs to be able to support the rest of the roofing system. 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. Plywood has structural strength in only one direction osb in two.

Foot and with a maximum of spacing of 16 inches between rafters. H3 1 losp is the standard preservative treatment for bd structural square. If treated ecoply structural plywood is treated with either h3 2 cca copper chrome arsenate or h3 1 losp azole clear treatment. This carries enough structural integrity for most roof loads.