With constant changing building codes Merrimack Building Supply has what you need to meet your commercial and residential insulation requirements. We carry many forms of insulation: fiberglass, semi-rigid, rigid, and blowing wool. Our major brands include Certainteed, Johns Manville, Roxul, and Dow board for all your commercial and residential needs. Our Certainteed inventory includes the labor cost-saving Dryrite® line, and Johns Manville is formaldehyde-free!
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