EVERYTHING ABOUT ROCKWOOL INSULATION

Joints of duct techniques shall be manufactured considerably airtight by means of tapes, mastics, liquid sealants, gasketing or other permitted closure units. Closure devices utilized with rigid fibrous glass ducts shall adjust to UL181A and shall be marked181A-P for pressure-delicate tape, 181A-M for mastic or 181 A-H for warmth-delicate tape. Clo