How To Install Flat Metal Roof

Use your neoprene washer head screws to secure the metal to the sheathing.

How to install flat metal roof.

For first time homeowners it s typical to hire a professional contractor who can complete the flat roof installation for you and offer a full warranty for their work. How to install metal roofing. Step 3 install the metal edging. Measure the height of your roof adding 2 to 4 inches to your measurement to allow overhang.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Place the first screw. Step 1 measure the roof height. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.

For exposed fasteners avoid over tightening the fastener. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. And for any exposed fasteners try to avoid over tightening them. They give added support to the roof and also provide a nailing surface for the end panels and drip edge.

Close or seal off the ends with a wood or plastic strip under the panel at each end. Try to space the screws about 12 inches apart down the entire piece of metal. Purlins are 2 by 4 feet and are installed much like metal roofing. So if your roof has two layers it may require a complete tear off even though steel is lighter than asphalt.

Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top. Step 2 create a base. Step 4 laying the sheets.

Space the screws about 12 in 30 cm apart. Moreover try to ensure that the screws are all aligned evenly. Place them directly onto purlins that are attached to the roof trusses beginning on the outside edge. You will use metal roofing screws to secure the metal panels to the sheathing.

Metal roof purlins are installed horizontally under metal roofs. Measure the height. What s involved in how to install metal roofing. Of course you don t need to live in a modern house to deal with a flat roof.

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. Install the roofing screws vertically along each rib in the panel. Step 5 install the metal trim.