Can You Put Metal Roof On Flat Roof

A metal roof can be installed right on top of your existing roof most of the time.

Can you put metal roof on flat roof.

A metal roof can actually last up to 100 years. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. But the taller profiles like standing seam and pbr shown below can be installed on roofs with as low as 1 4 or 1 2 in 12 pitch. Use metal snips to cut flashing material.

Metal roofing typically comes in large sheets but you can order smaller sizes to fit around unique features or irregular extensions of your roof for example small patios or covered stairwells. This eliminates the cost of ripping or tearing off existing material. Metal specifically aluminum is known for its durability. Install gutters in valleys as needed.

So if your roof has two layers it may require a complete tear off even though steel is lighter than asphalt. Most codes now allow no more than two layers of roofing before requiring a complete tear off. Cut the gutters to fit using metal snips. Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs.

Install metal flashing along the edge of the roof using a hammer and 1 2 inch roofing nails. Consult the guide for your shingle brand to determine the specific method of installation required to preserve the warranty. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. Plus it has the added advantage of reflecting heat from the sun which keeps energy costs down.

Low slope metal roofs require less material which reduces the overall load on the building s structure. Because of the shallow height of the undulating ridges of the 5v and corrugated profiles and the use of exposed metal fasteners to screw the metal to the roof deck they are limited to a slope that will shed rain quickly. Flat metal roofs can last for almost 35 years in ideal conditions. Continue reading below our video of the day.