Low Slope Copper Roof

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.

Low slope copper roof.

These panels generally come with a painted mill finish or a clear acrylic finish. Instead only sections such as towers porches bay windows and low slope sections copper with soldered seams get copper for looks or waterproofing purposes. The minimum roof slope for metal roof panels depend on 3 different scenarios. For roof slopes less than 6 on 12 the upper roof pan is attached to a locking strip soldered to the lower pan.

Flat seam roofing systems are typically used on roofs that are flat or have a low pitch or alternatively on very steep slopes. A more expensive low slope or flat roof option include sealed metal roofs using copper or tin. These are soldered interlocking systems of metal panels. Copper and stainless steel can be used for low slope roofs but a fair amount of planning is involved.

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. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units.

See example table 8 8a. 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. Rectangular cold rolled copper sheets. Today it is rather rare that an entire roof gets covered with copper.

Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs. They are also used on curved surfaces such as domes and barrel vaults. An ssr has side joints between the roof panels that are arranged in a vertical position above the roof line. Low slope metal roofs require less material which reduces the overall load on the building s structure.

Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. Flat seam roofing is constructed of 18 by 24 20 oz.