Roof Sweep Detail

Flashing is installed to surround roof features such as vents chimneys and skylights.

Roof sweep detail.

Gambrel roof framing geometry calculator metric this gambrel roof confines to a semicircle and starts as the top half of an equal sided octagon. 3 features of chinese roof architecture 1. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. Ancient chinese architecture was designed to be attractive especially the distinctive roofs.

Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. There were various roof styles with functional features a hierarchy of designs and exquisite details.

The details illustrated below from the 120 page publication copper roofing in detail will meet most conditions likely to be encountered but the principles shown should help with any unusual situations. Sweep standing seam upstand. Roof flashing details that are not designed to absorb thermal or other building movement can lead to cracked broken metal flashings that leak badly into the. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.

This gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Traditional chinese roofs had different forms at different stages of history. Roofing industry spokesmen say that up to 90 percent of flat and low slope roof leaks occur because of poor detailing poor workmanship or abuse by other tradesmen working on the roof.