How To Lay Metal Roofing Over Shingles

Install your metal edging around the perimeter of your roof.

How to lay metal roofing over shingles.

Overlap the rises and dips if using corrugated sheets or lay flat sheeting with a slight vertical overlap. Make a slat board base on top of the shingles. Make sure roof is square. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Use 1 1 4 inch. How to install a metal roof over shingles. It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same.

What s involved in how to install metal roofing. 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. Begin laying the metal sheets from the bottom to the top of the roof. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. We get asked this question all the time. Replace all these with the new metal roofing. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems.

Work at a comfortable steady pace trying not to rip up or carry off too much old roofing at once. Install the metal edging. Metal roof over shingles condensation metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise.

Can i install a new metal roof over shingles. Anatomy of a steel roof. Both metal and shingle roofs are great options for your next roofing project. Yes you can and by doing so you save in the labor and hassle of tearing off the old roof and you won t be contributing to filling our landfills.

Put the steel down directly on a vapor barrier. Most metal shingles will be attached to the roof using metal shingle. After all you ll be making a significant and long term investment. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.

Screw the first sheet in the center as well as the edges.