Proper Way To Install Metal Roofing Over Shingles

Metal roofing is very slippery when wet.

Proper way to install metal roofing over shingles.

Step 2 measure roof. Yes you can install a metal roof over shingles. Most metal shingles will be attached to the roof using metal shingle. 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. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Step 1 work safely. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.

For exposed fasteners avoid over tightening the fastener. Brace your extension ladder. 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. Install metal roofing sheets.

However you ll want to check with your local building department before you make any decisions. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. Step 4 install edging. Use 1 4 inch metal wood screws to attach the metal sheets to the wood slat board base.

Place a sheet from top to bottom on a section of the roof. If you want to install steel over asphalt your best choice is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. Step 3 install slat board. Step 5 install metal.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Space the screws about 12 in 30 cm apart. Choose a day with calm weather to work on the roof. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.

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. Metal roofing sheets have to be installed one at a time.