Standing Seam Roof Over Shingles

It s also described as having raised seams or vertical legs that rise above the level of the panel s flat area.

Standing seam roof over shingles.

I would say at least every 10 years one should refasten the roof or dope the screw heads. The system is designed around the patent pending 138t shingle recover clip and 138t symmetrical standing seam panel. Unlike steel and aluminum shingles standing seam panels should not be installed over the existing asphalt shingles. There are two main reasons.

Standing seam kynar 500 coated aluminum or steel. Better steel shingle systems like the one shown install over a framework of 2x2s. Both field locked and snap locked panels the overall installation cost is 950 to 1 550 per square. Standing seam roofs are a little better than other types because the fasteners are hidden.

The main challenges when installing a metal roof directly over shingles with no underlayment are clip alignment and abrasion on the underside of panels. 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. The problem is that metal has such a large coefficienct of expansion and contraction that the fasteners are frequently worn out or broken.

Mcelroy metal has introduced a method for installing standing seam metal roofing directly over asphalt shingles without a tear off. Standing seam metal roofing is defined as a concealed fastener metal panel system that features vertical legs and a broad flat area between the two legs.