The second way to install a metal roof over a shingle roof is with the use of purlins or battens.
Standing seam metal roof over shingles.
A contractor can minimize the appearance of edge creep by using lap flashing hemming exposed edges when possible or using a paint pen on visible cut edges.
In contrast steel shingles are small panels installed in horizontal rows much like other shingles.
By placing metal roofing over shingles you can save in the labor costs of ripping them off while also preventing them from being thrown into landfills.
This makes it a versatile and appealing product.
Metal roofing types metal is light energy efficient and durable.
Mcelroy metal has introduced a method for installing standing seam metal roofing directly over asphalt shingles without a tear off.
It comes in a variety of formats and designs including shingles standing seam wooden shake and tile.
Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it.
Better steel shingle systems like the one shown install over a framework of 2x2s.
Many details in a standing seam metal roof have folds or hemmed edges that conceal the cut edge of the metal.
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.
This framework has three big advantages.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
In contrast steel shingles are small panels installed in horizontal rows much like other shingles.
This method has its benefits as well.
Installing metal roofing over shingles is the best solution.
This framework has three big advantages.
Advantages of metal roofs over shingles.
The system is designed around the patent pending 138t shingle recover clip and 138t symmetrical standing seam panel.
Better steel shingle systems like the one shown install over a framework of 2x2s.
The main challenges when installing a metal roof directly over shingles with no underlayment are clip alignment and abrasion on the underside of panels.
Metal roofs generally can run from 120 to 900 per 100 square feet one 10 foot by 10 foot area or a square of material while asphalt shingles will be between 100 and 200 per 100 square.
In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles.
Disadvantages of metal roofs.