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Question DetailsAsked on 11/6/2015

Compare price of shingle, metal or membrane roof?

shingles, metal roof or membrane?

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Here are some related questions with many answers on choosing between different roofing types, and some ballpark cost factors on non-asphalt alternatives FYI - more in the links in the answers and in the Home > Roofing link in Browse Projects, at lower left.


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Note that while asphalt, wood, and metal shingles and metal panel/strip roofing are generally used in the same conditions (at or above 3:12 slope generally, 4:12 preferred for all but metal panel), generally membrane roofing is used for the lower slope and flat roofs, so not the same environment and not generally interchangeable on a given roof. Basically, for both long-term performance (especially physical damage resistance) and aesthetic reasons, membrane roofing tends to be used only where you have to have the best waterproofing (as opposed to only water resistance as with layered or lapped shingles), and on steep enough roofs for them to work well the layered or panel solutions are generally chosen.


Note that there are now some people experimenting with peel-and-stick or spray-and-stick membrane roofing on steeper roofs, but results to date have tended to be erratic and there have been a fair number of very poor results due to peeling, bunching or creasing, wind stripping, etc so membrane is not generally recommended as the final surface on steep enough roofs to handle shingles and such.


There have also been some experimenters with self-healing membrane being used as the water barrier on low-slope roofs under shingles - to get the better water resistance of the membrane for the lower slope but still the aesthetics of shingles. Properly done this can work and several very large commercial jobs have been done this way, but extraordinary care has to be taken with the fastener penetrations and using double-cup screws sealed both at the membrane and at the shingle, which makes it real pricey because the laydown is slow and high-production nail guns cannot be used.

Answered 3 years ago by LCD




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