Dictionary

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m
Mansard Roof

A type of roof containing two sloping planes of different pitch on each of four sides. The lower plane has a much steeper pitch than the upper, often approaching vertical. Contains no gables.

Membrane

A flexible or semi-flexible roof covering or waterproofing layer, whose primary function is the exclusion of water.

Mineral Granules

Opaque, natural, or synthetically colored aggregate commonly used to surface cap sheets, granule-surfaced sheets, and roofing shingles.

Mission Tile

A curved tapering tile unit.

Modified Asphalt

Asphalt that has been chemically mixed with various polymers such as SBSi or APPi in order to achieve qualities beneficial to the roofing process.