Metal Roof House Properly Done

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

Metal roof house properly done.

Install the roofing screws vertically along each rib in the panel. First because the frame is screwed directly to the rafters and the interlocked shingles are screwed to the frame the roof can withstand winds of up to 120 mph without damage. Metal roofs were popular in the 1800s and early 1900s. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise.

While the life of a metal roof is much longer investing in a metal roof only makes sense if you plan to stay in your home long enough to enjoy the cost benefits. Warranties vary widely but most companies back their products for 20 to 50 years. 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. Better steel shingle systems like the one shown install over a framework of 2x2s.

Space the screws about 12 in 30 cm apart. Today s metal roofs are virtually leakproof rustproof and are low maintenance. Metal is resistant to fire mildew insects and rot. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

5install metal panels or shingles. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. 2 install underlayment right over the shingles before installing the metal roof the second way to install a metal roof over a shingle roof is by applying an approved underlayment right over the old shingle roof. This framework has three big advantages.

So if your roof has two layers it may require a complete tear off even though steel is lighter than asphalt. Adding more insulation during installation usually solves this problem but that may increase costs. Homeowners found themselves walking on old metal roofs to apply sealers and nail loose sheets down. Metal roofs can be noisy especially during a heavy rain or hailstorm.

A properly installed metal roof typically will last as long as the house with an expected lifespan of 40 to 70 years and often a 30 to 50 year manufacturer s warranty to boot. Properly installed a metal roof should last as long as the house sealing out water surviving high winds and easily shedding snow. Metal roofing materials that are attached as large panels tend to expand and contract. There are still instances when you may need to walk on a metal roof though like to inspect it.

The main benefit of doing it this way is that it is the fastest way to install a new metal roof over a shingle roof.