Osb Or Plywood For Shed Roof

Saturday 12th january 2013.

Osb or plywood for shed roof.

And while seven sixteenth in. Plywood is better than osb for subfloors. New homes will usually see a few rainfalls before a roof is on and as noted above osb doesn t handle moisture well. Now let s have a look at some of the main differences between cdx and osb as roofing plywood.

On saturday i collected a couple of 18mm sheets of plywood. Even though plywood is more expensive and osb stronger my recommendation for a shed roof is 5 8 or 3 4 construction grade exterior rated cdx t g plywood. Watch this now to learn how to avoid this same pr. Osb is made of chips of softwood glued together in a semi random pattern.

Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. Despite its common use as such we don t recommend using osb for subfloors but that s really just for aesthetic reasons. As with plywood osb typically comes in 4 ft. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements.

Most construction sites will consider the use of either osb or plywood for the roof. Plywood is made with an odd number of layers for optimal strength and performance. However there are some sceptics out there who doubt the strength and durability of osb. Using oriented strand board is a tested way of reducing costs for building your shed.

Going back to the x in cdx you may recall that it means exposure. One of the nice things about plywood is the variety of options you can buy. One of the major differences between osb and cdx plywood is how well each holds up against water. My shed is osb with a layer of torch on roof felt been good for 10 years.

The higher the slope the more quickly the snow and rain will be shed but also the greater the wind force. Plywood with similar properties currently costs about 30 more for an equivalent thickness. Due to requiring extra tools for cutting the sheets to size the roofing job for the shed hasn t been completed. Since this is my first attempt at carpentry i was unaware to just how heavy and awkward it would be to manouver these sheets though i soon found out.

Differences between osb and cdx for roofing plywood. 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.