Special standing-seam systems designed for slopes as shallow as 1/2 :12 require subject crimping machinery and have sealant in all seams. The height of the ribs at seams and whether they are protected with a sealant have an effect on…

Gravity vents are often called globe vents or barn vents. They’re a sturdy multi-use cap designed for a sloped roof and have a steel band to forestall crosswinds and rain. All gravity vents have a in-built display screen for bugs…