Proper Way To Install Metal Roof Over Shingles

Step 3 install slat board.

Proper way to install metal roof over shingles.

It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow. The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins. Brace your extension ladder. However you ll want to check with your local building department before you make any decisions.

The edging or eave flashing consists of metal strips that are used to cover the perimeter of the roof. Yes you can install a metal roof over shingles. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Step 1 make a slat board base on top of the shingles.

Step 1 work safely. Always begin working at the point with the longest peak to eave distance. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. 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. Laying steel roofing over shingles the right way. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. 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.

Add the metal panels. 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. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

Choose a day with calm weather to work on the roof. Use your 1 1 4. Step 4 install edging. This method has its benefits as well.

How to install a metal roof over shingles with proper tools steel roofs can be noisy and unattractive in residential settings. However if the steel roof is installed over an existing asphalt roof noise shouldn t be a problem. Otherwise you will need to remove the shingles. Most metal shingles will be attached to the roof using metal shingle.

Take your first sheet of. 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.