Proper Metal Roof Installation

Don t let a contractor tell you that it s ok to install your new metal roof over existing asphalt shingles.

Proper metal roof installation.

Remove the old roof. It s important to start square because if the first panel is tilted a little bit all the panels that come after are going to be tilted as well. When you re installing a metal roofing panel the first thing that you want to do is make sure you re starting square. You will need to order enough metal material to cover the entire roof and this process.

If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. Moreover a corrugated metal roof is highly durable and will last for decades. A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing the new roof. Florida building code allows a minimum pitch of 2 12 for grand rib 3 panels as long as lap screws and sealant are applied to the laps to prevent water from siphoning over the ribs see fig.

A proper installation starts on plywood with a proper waterproof underlayment. This means that your vertical lines are all running square to your eave. 1 remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely removing the old shingles before installing the new metal roof. Most metal shingles will be attached to the roof using metal shingle.

This style of metal roofing panels requires a certain degree of pitch to ensure proper water drainage. You ll want to order metal panels that are an appropriate color and look to complement your. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.

Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. An old shingle roof may have water damage and rot that won t go away if it s covered up. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. For exposed fasteners avoid over tightening the fastener.

Measure the roof area. When you decide to install corrugated metal roofing you just need to make sure that you have the right materials. You home should only have one roof at a time.