Proper Way To Install Metal Roof Over Shingles

The industry standard for underlayment is often thought of as felt paper tar paper but there are also many newer synthetic underlayments that are designed to work well with metal roofing.

Proper way to install metal roof over shingles.

Laying steel roofing over shingles the right way. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. However it is based upon experience with tens of thousands of installations over many years. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.

Both metal and shingle roofs are great options for your next roofing project. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. 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. Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles.

Step 3 install slat board. Metal roofing is very slippery when wet. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

Use your neoprene washer head screws to secure the metal to the sheathing. Brace your extension ladder. Otherwise you will need to remove the shingles. Step 1 work safely.

Step 4 install edging. Things to know about metal over shingle roof problems. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Get a good look at the overall condition of the roof before installing a new metal roof have the opportunity to nail off the plywood to new and more stringent florida building codes.

A layer of underlayment installed on top of the existing shingles will help keep the granules of the old shingles from rubbing against the back of the metal and causing possible corrosion. Step 5 install metal. However you ll want to check with your local building department before you make any decisions. Most metal shingles will be attached to the roof using metal shingle.

Step 2 measure roof. Step 1 make a slat board base on top of the shingles. Yes you can install a metal roof over shingles. Space the screws about 12 in 30 cm apart.

I frequently am asked whether homeowners and contractors should remove roof shingles from a home s roof before a new metal roof is installed. For exposed fasteners avoid over tightening the fastener.