Metal Roof Panel Overlap

If you are placing metal panels over an existing roof you still use purlins.

Metal roof panel overlap.

Whether you re working with tin roofing sheets performing. How to overlap metal roofing early safety precautions. Lay 3 inch wide butyl tape over all vertical metal panel seams. Peel back the release backing to start the application.

Measure and cut the metal sheet panels as necessary before installing them on the roof. Dress with safety in mind. Top sellers most popular price low to high price high to low top rated products. A basic rule of thumb for installing metal roofing is that the piece of roofing higher up on the slope should always overlap the one below it.

Do this until the entire roof is covered. Place the first screw. 3 wide rib panel. Position the tape with the release backing on the top side.

If you feel the need for sealants lay a bead of 100 silicone or adhesive silicone before laying the sheet down and make sure the bead is towards the edge of the bottom sheet. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Continue installing the metal panels making sure that the edges overlap at least 1 in 2 5 cm or as required with the adjacent panel. The purlins not only give you something other than the existing roof to accept the roof panel fasteners they also create an airspace between the roof panels and the existing roof.

Install the roofing screws vertically along each rib in the panel. Peter unfortunately on overlapped panels you do have to use a butyl sealant. Because of this you should start at the lowest part of the slope and work upward. This helps to prevent water infiltration.