Overlapping Steel Roofing Lengths

Overlapping anti condensation lined sheets.

Overlapping steel roofing lengths.

Roofing panels come in many styles and dimensions with different overlap dimensions. On the eave side of the roof aim to overhang the panels by 1 to 1 5 inches. We recommend about 2. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Sheet lengths of up to 24m can be used before an expansion joint is required for roof applications. Metal roofs though less appealing than shingle or tile is a more fire resistant and heat reflecting roofing option. The sheets should overlap by at least four inches add a bead of caulk where they overlap and at the other end of the building ensure there s an overhang of two inches. Any end laps must be supported by a suitable purlin.

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 line. Sheets are supplied custom cut. The most common lengths are 8 10 12 and 16 however many distributors will cut to length. How to cut metal roofing never use a circular saw or other device that will fling hot metal chips all around the area you cut.

If end laps are required you should allow 300mm minimum overlap sealed with butyl sealant tape 10mm from the edge of each overlapping sheet as well as in the middle of the overlap. Once the first sheet is in place you need to install the remainder of the lowest row of corrugated metal roofing. Make sure the panel is square to the roof line. The easy installation involves placing metal panels on your roof but you ll need to be mindful of metal roof overlap.

Install the roofing screws vertically along each rib in the panel. If your panels aren t layered properly water damage can occur. The most common widths are 24 and 36 exposed but the actual width of the panel will be larger to accommodate an overlap. This will void your paint system warranty as no.

Lay the remainder of the row.