Low Sloped Trellis Roof

For a low slope residential roof there are two main options.

Low sloped trellis roof.

A low sloped roof or flat roof can t depend upon the water to flow in any particular direction so it must form a watertight monolithic membrane that stays watertight all the way to the drains or edge. The membrane will outlast the shingles and seal around all nail penetrations. Asce 7 10 2015 ibc attributes ponding water to the deflection of relative flat roofs and identifies a susceptible bay for. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.

Anything above that will require you to put out higher cost because they are already considered as higher pitch. Modern low slope roof or flat roofs tend to use a continuous membrane covering which can better resist pools of standing water. Then apply standard asphalt shingles over the membrane. Gaf asphalt shingles combined with the proper underlayment make ideal low slope roof shingles that do an excellent job of preventing water build up and leaking.

The standard of lower pitch actually ranges between 1 12 to 5 12. Significant insight may be found in asce 7 section 8 4 as referenced in ibc section 1611 2. The gentle slope of a hip roof with its trapezoidal sides and pyramid like elegance is a graceful traditional design that pleases the eyes and can be constructed in a combination of various unique styles. If you have a low slope roof but would love to have a shingled look rather than other solutions like rolled sheet roofing you are in luck.