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n.1.The first coat of plaster laid on brick; also, the process of applying it.
References in periodicals archive ?
And Elk, the roofing sponsor, brought its collaboration with United Solar Systems' photovoltaic roof shingles into the act - roughing-in cable that would tie the solar electric shingles to a battery system that will provide back-up power for computers, controls, security, and emergency lighting.
Division 15 Sections for supply and exhaust fans; exhaust ductwork; service roughing-ins;