Low Slope Copper Roof

A more expensive low slope or flat roof option include sealed metal roofs using copper or tin.

Low slope copper roof.

The lower pan is cleated to the roof deck with the indicated clearances determined by expansion calculations. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs. Instead only sections such as towers porches bay windows and low slope sections copper with soldered seams get copper for looks or waterproofing purposes.

Rectangular cold rolled copper sheets. Flat seam roofing is constructed of 18 by 24 20 oz. Today it is rather rare that an entire roof gets covered with copper. These are soldered interlocking systems of metal panels.

For roof slopes less than 6 on 12 the upper roof pan is attached to a locking strip soldered to the lower pan. For a long span roof utilizing multiple seamed pan lengths transverse seams are required. These panels generally come with a painted mill finish or a clear acrylic finish. 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.

Low slope metal panel roofing may be a standing seam roof ssr through fastened roof tfr or insulated metal panel imp roof. See example table 8 8a. Copper and stainless steel can be used for low slope roofs but a fair amount of planning is involved. 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. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. The minimum roof slope for metal roof panels depend on 3 different scenarios. An ssr has side joints between the roof panels that are arranged in a vertical position above the roof line.

They are also used on curved surfaces such as domes and barrel vaults. Low slope metal roofs require less material which reduces the overall load on the building s structure.