Low Slope Copper Roof

Low slope structural roofing generally used on roof pitches ranging from 12 to 3 12 consists of interlocking panels commonly called standing seam roofing that run vertically along the roof surface.

Low slope copper roof.

Flat seam roofing is constructed of 18 by 24 20 oz. For roof slopes less than 6 on 12 the upper roof pan is attached to a locking strip soldered to the lower pan. Low slope metal roofs require less material which reduces the overall load on the building s structure. Today it is rather rare that an entire roof gets covered with copper.

Rectangular cold rolled copper sheets. Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. These panels generally come with a painted mill finish or a clear acrylic finish.

Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. Traditionally low slope or flat roofs would use a built up tar and gravel roof but today this traditional type of roofing suffers from performance cost environmental concerns requiring better value solutions. An average sized copper roof will cost between 30 000 to 60 000 or even more to install. For a long span roof utilizing multiple seamed pan lengths transverse seams are required.

Instead only sections such as towers porches bay windows and low slope sections copper with soldered seams get copper for looks or waterproofing purposes. Low slope metal panel roofing may be a standing seam roof ssr through fastened roof tfr or insulated metal panel imp roof. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units. A more expensive low slope or flat roof option include sealed metal roofs using copper or tin.

See example table 8 8a. Copper and stainless steel can be used for low slope roofs but a fair amount of planning is involved. These are soldered interlocking systems of metal panels. An ssr has side joints between the roof panels that are arranged in a vertical position above the roof line.

First the metal must be cut down to pans no larger than 18 by 24 inches so thermal expansion and contraction won t overstress the solder joints. The lower pan is cleated to the roof deck with the indicated clearances determined by expansion calculations.