Metal Roof On Plywood

Install the roofing screws vertically along each rib in the panel.

Metal roof on plywood.

Most metal roofs will also require underlayment as well as a slip sheet. The asphalt in the felt paper is waterproof and does a great job of protecting the. But it seems the condensation will affect the 2x4 strapping. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Selecting the right underlayments for a lifetime metal roof should be a primary concern for anyone thinking about specifying or choosing to install a metal roof on their home. Sweep the plywood clean of all dirt and debris with a push broom. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof. In reading online it seems wise to install a vapor barrier over the plywood to prevent condensation from getting adsorbed into the plywood from the steel roof.

I was planning on putting plywood over the rafters and cross the rafters with a 2 x4 every 16 to secure the metal roof to. For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. He won t do it unless i put on plywood as a base he also recommended ice and water underlayment. Remove all unused vents pipes and protrusions.

Applying the underlayment and the slip sheet. Use the reinforced solitex mento plus roof underlayment on top of your rafters. Do you need plywood under metal roofing. Most metal roof companies recommend installing felt paper on roof sheathing before you install the metal roofing.

April 3 2017 filed under. Considering when to. Add purlins on top of this for venting and drainage then add horizontal purlins to mount the metal roof to. Metal roofing roofing answers roofing installation roofing materials 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.

After the original roofing is removed what you will want to do first is look for bad pieces of. I have an existing steel roof presently just on purlins. How to install metal roofing over plywood inspect your plywood. Do i need the plywood base.

Place the first screw. Since your subroof will be waterproof well drained and airtight this will be a cost effective solution to build your roof saving the cost of plywood. The quality and type of underlayments used on the project in the long term will affect the overall performance of the roof. In a barn shop or other outbuilding you can attach your metal roof directly to the purlins.

How to apply metal roofing over plywood step 1.