interlayment

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English[edit]

Etymology[edit]

interlay +‎ -ment

Noun[edit]

interlayment (countable and uncountable, plural interlayments)

  1. (roofing) a felt, metal, or membrane sheet material used between courses of steep-slope roofing to improve the weather and water-shedding characteristics of the primary roof covering during times of wind-driven precipitation.
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