Osb Or Plywood For Roof That Soans 32

Quality base layer for wall and roof sheathing applications.

Osb or plywood for roof that soans 32.

The minimum plywood for roofing. Moisture also affects the strength of plywood. Another issue that many people encounter is what size plywood the roof may need. Ps 1 09 structural plywood form l870.

Plywood sheathing osb. The span rating on apa rated sheathing panels appears as two numbers separated by a slash such as 32 16 48 24 etc a the left hand number denotes the maximum recommended spacing of supports when the panel is used for roof sheathing. These panels include unsanded touch sanded and sanded plywood and oriented strand board osb. Rafters run from the peak of the roof.

10 psf dead load assumed. 19 32 cat ps2 10 osb sheathing application as 4 x 8. Fortunately this is one issue that has primarily been standardized by the industry. No core voids.

Loads are provided for applications where the panel strength axis is applied across supports and applied parallel to supports. T and g common. Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot. For each combination of span and span rating loads are given for deflections of l 360.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Full face oriented strand board osb is a material with high mechanical properties osb is a material with high mechanical properties that make it particularly suitable for load bearing applications in construction. X 8 ft actual. Both cdx plywood and osb tend to come in standard sheets of four foot by eight foot 4 8.

Page 6 of 7 v1 0 01 2008 osb roof design example calculations using asd 4x8 foot 24 16 teco sheathing span. So while exterior glued plywood can be used outdoors it works best. While osb oriented strand board is generally cheaper than plywood it is heavier and not as stiff as plywood and can result in soft squeaky floors under weight the biggest complaint against osb is that it doesn t handle moisture very well so it is more suited for indoor use. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.

However you might find that osb can better suit your needs than plywood for the roof. The span rating of apa rated siding panels applies when installed vertically. Item 12214 model 671414. With edge support and the same snow load 3 8 inch osb can be used.

Apa rated osb sheathing roof panels performance category apa span rating allowable live load for roofs psf 3 8 24 0 30 7 16 24 16 40 15 32 32 16 70 1 2 32 16 70 19 32 40 20 130 23 32 48 24 175 1 1 8 48 oc 290 performance category replaces the nominal panel thickness live load for 24 oc span conditions.