Roof Decking Thickness Osb

With edge support and the same snow load 3 8 inch osb can be used.

Roof decking thickness osb.

The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. Thickness and fixing recommendations are similar to those for plywood. Suitable for use with all bauder systems wood particle board chipboard. Both osb and plywood absolutely hate water lipinskiy mentions going on to say that the most important part regardless of which decking option you choose is that all penetration points on a roof are sealed.

Oriented strand board osb osb used for flat roof decking should be type osb 3 or osb 4 conforming to bs en 300. Thicknesses range from 5 16 to 3 4 inch and the proper one to use. If you get 45 or more pounds of pull out resistance that s considered acceptable for most applications. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.

To be fair osb is not exactly best friends with water either. 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. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Roof leaks of course but also improper attic ventilation can cause condensation in the roof deck that can cause the osb to weaken.

Plywood boards used for the deck should be. For the curious 7 16 osb has a span rating of 24 16 and with supports every 24 inches is good for a roof live load of 40 psf pounds per square foot with a 10 psf dead load. Plywood for a roof deck should be of marine grade and suitable for external use to bs en 636 or a bond class 2 or better complying with bs en 314 check. Osb3 sterling board 9mm 11mm 18mm osb roofing supplies uk a staple in a wide range of construction projects osb board is used for everything for sheeting through to structural sheathing and more.

A minimum thickness of 18mm these will be able to span up to 600mm. I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it. One option is to try some test fasteners in the osb. For heavier loads a 40 20 rated panel 19 32 or 5 8.

It s simply the lesser of two evils according to lipinskiy. A good alternative to ply wood and usually cheaper we stock osb3 board in a selection of sizes.