Proper Way To Install Metal Roofing Over Shingles

Use 1 4 inch metal wood screws to attach the metal sheets to the wood slat board base.

Proper way to install metal roofing over shingles.

However you ll want to check with your local building department before you make any decisions. 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 2 measure roof. Laying steel roofing over shingles the right way.

Step 5 install metal. Use your neoprene washer head screws to secure the metal to the sheathing. Most metal shingles will be attached to the roof using metal shingle. Step 1 work safely.

Space the screws about 12 in 30 cm apart. Install metal roofing sheets. Metal roofing sheets have to be installed one at a time. Yes you can install a 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. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. 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.

Choose a day with calm weather to work on the roof. Metal roofing is very slippery when wet. 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. Place a sheet from top to bottom on a section of the roof.

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. Brace your extension ladder. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.