Standing Seam Roof Over Shingles

In contrast steel shingles are small panels installed in horizontal rows much like other shingles.

Standing seam roof over shingles.

Better steel shingle systems like the one shown install over a framework of 2x2s. Unlike steel and aluminum shingles standing seam panels should not be installed over the existing asphalt shingles. First of all if you install a standing seam metal roof over asphalt shingles there will be a so called telegraphing effect where shingles can punch horizontal lines in standing seam panels. Standing seam kynar 500 coated aluminum or steel.

Both field locked and snap locked panels the overall installation cost is 950 to 1 550 per square. Architectural and premium shingles. 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. The system is designed around the patent pending 138t shingle recover clip and 138t symmetrical standing seam panel.

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

Standing seam roofs are a little better than other types because the fasteners are hidden. I would say at least every 10 years one should refasten the roof or dope the screw heads.