base sheet
Noun
Meaning
base sheet (plural base sheets)
(roofing) an impregnated, saturated, or coated felt placed as the first ply in some low-slope roof systems.
Synonyms
backing
lining
substrate
substratum
base coat
base layer
foundation layer
support layer
base film
base material layer
base panel
basic layer
building pad
carrier film
carrier foil
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