Plywood Or Chipboard For Shed Roof

Osb is okay but plywood handles moisture a bit better.

Plywood or chipboard for shed roof.

Using oriented strand board is a tested way of reducing costs for building your shed. If you do add new plywood sheathing you could just tape the joints and it will act as your air barrier. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements. 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. Due to requiring extra tools for cutting the sheets to size the roofing job for the shed hasn t been completed. However there are some sceptics out there who doubt the strength and durability of osb. One of the nice things about plywood is the variety of options you can buy.

Plywood is made with an odd number of layers for optimal strength and performance. Wickes used to do bitumnen faced plywood otherwise use shuutering ply wear gloves and eye protection when cutting it spits quite bad as for osb. Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. Could it be that these people have inadvertently used the wrong grade of material.

The higher the slope the more quickly the snow and rain will be shed but also the greater the wind force. 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. 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. Most construction sites will consider the use of either osb or plywood for the roof.

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. Replacement shed roof osb or ply. Plywood with similar properties currently costs about 30 more for an equivalent thickness. The lower the slope the more weight for snow load but less wind force.