The Leading Source of HIGH-QUALITY INSULATION VAPOR RETARDERS Lamtec Corporation is a global supplier of insulation vapor retarders and facings to the leading manufacturers, laminators and fabricators of fiberglass, rockwool, foam board and tape. Our focus is the building products market, specifically facings for the Metal Building (New and Retrofit/Re-Cover), HVAC (Duct Wrap and Duct Board), Mechanical (Pipe and Tank), Foam Board / Panel, Tape and OEM insulation segments.