Plywood Or Chipboard For Shed Roof

If you are sticking with the original sheathing or boards if that s what it had i d suggest adding a vapour permeable membrane over top as an air barrier.

Plywood or chipboard for shed roof.

The higher the slope the more quickly the snow and rain will be shed but also the greater the wind force. Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for light frame wall and roof assemblies in weather protected applications. On saturday i collected a couple of 18mm sheets of 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.

Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. 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. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements. Plywood with similar properties currently costs about 30 more for an equivalent thickness.

Im not a roofing contractor but ive seen my share and i would not use ply wood on a roof i have seen it bow and buckl time after time thats old school now most commonly used is 3 4 5 8 advantec t g or 5 8 osb they sell it up here for roofing it strong and wont buckl but if you can spend the extra advantec is the way to go you can leave it out side for ever and it wont swell or rott tuff. Using oriented strand board is a tested way of reducing costs for building your shed. One of the nice things about plywood is the variety of options you can buy. Due to requiring extra tools for cutting the sheets to size the roofing job for the shed hasn t been completed.

Most construction sites will consider the use of either osb or plywood for the roof. If you do add new plywood sheathing you could just tape the joints and it will act as your air barrier. Osb is okay but plywood handles moisture a bit better. More product details close.

Plywood is made with an odd number of layers for optimal strength and performance. Could it be that these people have inadvertently used the wrong grade of material. The lower the slope the more weight for snow load but less wind force. Replacement shed roof osb or ply.