THE BEST SIDE OF ALUMINIUM FOIL INSULATION

Joints of duct methods shall be built significantly airtight via tapes, mastics, liquid sealants, gasketing or other accredited closure techniques. Closure methods used with rigid fibrous glass ducts shall comply with UL181A and shall be marked181A-P for pressure-delicate tape, 181A-M for mastic or 181 A-H for warmth-delicate tape. Closure techniqu