Low Sloped Trellis Roof

Asce 7 10 2015 ibc attributes ponding water to the deflection of relative flat roofs and identifies a susceptible bay for.

Low sloped trellis roof.

For a low slope residential roof there are two main options. Then apply standard asphalt shingles over the membrane. 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. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.

Significant insight may be found in asce 7 section 8 4 as referenced in ibc section 1611 2. A gable roof is shaped like an upside down v and is sometimes referred to as a dual pitched saddle saddleback or peaked roof. The reason water ponds on a low slope roof is a possible misinterpretation of the 1 4 in 12 minimum slope by the building code. The membrane will outlast the shingles and seal around all nail penetrations.

Modern low slope roof or flat roofs tend to use a continuous membrane covering which can better resist pools of standing water. The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. The standard of lower pitch actually ranges between 1 12 to 5 12. 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.