Low Slope Roof In Winter

In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12.

Low slope roof in winter.

For a low slope residential roof there are two main options. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products. The most common flat and low slope roof leaks occur at flashings and roof penetrations such as at plumbing vents chimneys and roof mounted air conditioners or heat pumps. A minimum slope of 1 inch per foot is recommended in snow country.

The key factors are usually snow loading requirements adequate slope and the use of snow guards when needed. The membrane will outlast the shingles and seal around all nail penetrations. Very common also are leaks at parapet wall flashing and parapet wall caps. Furthermore low slope roofs are also prone to ice dams during winter as the stagnant water on the roof can easily freeze then thaw only to freeze again which of course could cause numerous problems for you.

Metal roofing systems have a good track record of performance in harsh winter environments as long as they are properly designed. There are some opinions that standing seam metal roof minimum slope is 12 but it increases the possibility of leaking on the few first days of snow arrival. So how can you avoid these problems. Then apply standard asphalt shingles over the membrane.

It s constructed of a durable reinforcing mat of non woven glass fibers that have been coated and permeated to a thickness of approximately 2 0 mm.