Meaning base ply
What does base ply mean? Here you find 2 meanings of the word base ply. You can also add a definition of base ply yourself
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base plyAn asphalt-saturated and/or -coated felt installed as the first ply with 4-inch laps in a built-up roof system under the subsequent courses of felt, which can be installed in a shingle-like fashion.
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base plyAn asphalt-saturated and/or coated felt installed as the first ply with 4 inch laps in a built-up roof system under the following felts which can be installed in a shingle-like fashion.
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