Labels:book | hakham | reckoner | window OCR: Prev Next Water Management of the Building Envelope HYAC Duct Sealants Rolled sealants incorpor "ate non- -curing Current listings are identified as UL 181 VOC free butyl laminated to variety of A-M and UL 181 B-M and refer tests facings Roll sealants provide superior conducted by UL using mastic on rigid service life compared to less expensive and flexible duct material Additionally standard duct tapes All nf the products, these same products are suitable for use when installed in accordance with on galvanized metal ductwork Although recommended manufacturers current UL 181test standards do not instructions provide maintenance free include galva nized metal ductwork the service during the normal life efficacy on metal IS implied based on undisturbed ductwork. historical evidence Recent ad ...
