Osb Flat Roof Deck

A homeowner recently wrote and asked me the following regarding osb roof decking.

Osb flat roof deck.

It goes up to 50c in summer being. Oriented strand board isn t plywood nor is it a type of particleboard fiberboard or wafer board and although it is a newcomer to a plywood. Oriented strand board commonly referred to as osb is a type of engineered lumber similar to particle board formed by adding adhesives and then compressing layers of wood strands. When designing a roof using smartply osb roof panels a deemed to satisfy approach may be employed using tables and design guidance for domestic roof applications given in bs 8103 3.

Osb flat roof decks should be designed in accordance with bs 6229. Can oriented strand board osb be used for roofing. Wood particle board chipboard. Up until 2000 plywood held the majority of the market for wall roof and floor sheathing when it was surpassed by osb which as of 2018 held about 75 of the market share.

Oriented strand board osb osb used for flat roof decking should be type osb 3 or osb 4 conforming to bs en 300. Osb is widely used as roof decking material. Odds are that if you pass a housing development of wood framed houses it will have osb oriented strand board as exterior sheathing. A minimum thickness of 18mm these will be able to span up to 600mm.

Builders put a new flat roof on the extension to my house in glossop in march 2011 he guaranteed the roof against leaks for 10. Panel selection should be made according to the category of use given in table 1 below. The thickness of plywood used for roof decking depends on the roof slope the spacing of rafters and the weight of other material to be put over the decking as well as the design load the. Osb boards used for the deck should be.

When you count sub floors roofs and wall sheathing osb claims about 70 of the wood sheathing market in north america over plywood. The current roof is polycarbonate hipped roof. With edge support and the same snow load 3 8 inch osb can be used. 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.

One of the nice things about plywood is the variety of options you can buy. Oriented strand board osb osb is a type of wood panel comprising of timber strands and should be manufactured in accordance with bs en 300. Flat roof deck. Suitable for use with all bauder systems.

Tiled pitched roof with velux or flat roof with pyramid lantern. Thickness and fixing recommendations are similar to those for plywood.