Putting Plywood On A Roof

For many applications a layer of plywood underneath your metal roofing is an unnecessary expense.

Putting plywood on a roof.

Metal roofing panels rated for architectural use attached to purlins horizontal pieces of wood or metal fastened to roofing trusses are structurally sound when installed according to your roofing manufacturer s instructions and local building codes. The roof s sheathing helps to keep the roof trusses or rafters properly spaced. Make sure you distribute the load well too if it is a big roof. Since these are exposed to outside conditions they must be coated or made of galvanized or other.

The plywood is nailed at roughly 150 mm spacings ensuring the ends finish on the centre line of a truss. The ring shanks on the shaft act like little barbs to grip the wood tightly when driven so that they resist loosening up over their lifetime. Plywood roofing panels that attach to the roof are held in place with ring shank exterior grade nails. Roof sheathing is a lot more than just flat panels onto which shingles are attached.

Ensure that the plywood deck is strong enough to withstand the added weight of the metal panels. Use a staggered pattern when building up rows of plywood sheets. These should be secured to the roof and allow for the forks of the boom to slide out once the plywood has been placed. This video shows how some roofs fail under heavy winds in uplift situations.

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. Installing plywood on a roof hello youtubers here s another video about plywood sheathing and composition shingles after replacing all damaged wood and. The connection between the roof sheathing and the structure is a vulnerable point that is known to fail during a hurricane. The key here is to have your roof fully braced and able to handle the load.

How to install roof sheathing. During a hurricane the strength of the sheathing on the roof can greatly impact the homes ability to weather the storm. Keep these tips in mind when roofing in hurricane areas. Build braced acceptors of 2 4 that will act as tables for the plywood.

This is to allow for any expansion or contraction in. Installing the plywood sheets.