Repair Low Pitch Rolled Roofing In Winter
For a low slope residential roof there are two main options.
Repair low pitch rolled roofing in winter. Wood shakes require a minimum roof pitch of 3 12 or greater. Rolled roofing material is often used on roofs that are low sloped. Then apply standard asphalt shingles over the membrane. Nail the roofing in place with short roofing nails spaced 6 inches apart and 1 inch in from the outer edges of the roll roofing.
Built up roofs require a minimum roof pitch of 1 4 12 or greater. Add a second piece of full width roll roofing over the first. Wood shingles require a minimum roof pitch of 3 12 or greater. Iko roof fast 95 base is a self adhesive product that can easily be cold applied on low slope roofs.
Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. Ice dam damage after installing a new low pitched roof over an existing flat roof in an old house in 2 south drive st. Visually this roof appears flat. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater.
Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. Visiting my sister marlene in thunder bay this summer 2012 there was as usual a project like every other time. Although surprisingly there was only one leak in the old roof. 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.
If your roof pitch declines up to 1 inch vertically for every 12 inches horizontally 1 12 pitch it is a good candidate for rolled roofing as long as you use the concealed nail method of fastening. Reshingling a low slope roof and a few things not to do this article covers reshingling a low sloped roof and a few things you should avoid when shingling such a roof. Think of a classic addams family haunted house with its soaring peaks and you have a. It was fashionable for modern style homes built in the 1960s to have little pitch just a barely negligible slope to help drain water.
Roofs on victorian era houses were often sharply angled with a steep pitch. This pitch might be as low as 1 12.