| 3.1601.2a
Inspection | All exposed ductwork in unconditioned spaces (e.g., attics, basements, crawl spaces) will be inspected Broken joints or large cracks, gaps, or holes will be identified Type of ductwork (e.g., metal, duct board, flex duct) will be identified Type and R-value of existing duct insulation (e.g., fiberglass, stone wool, asbestos) will be identified as will the location of vapor retarders, if any If asbestos insulation was used, it will not be disturbed; consult with an asbestos abatement expert for removal Loose fitting or damaged fiberglass or stone wool insulation will be removed using proper safety equipment Necessary clearances for installation of
SPF
SPF
Spray polyurethane foam
will be ensured | Identify damaged ductwork in need of repair Identify type and R-value of existing insulation |
| 3.1601.2b
Repair | Broken or missing ductwork will be repaired or replaced All cracks, gaps, or holes greater than ¼" will be taped or sealed as feasible Dust, dirt, and grease will be removed from exterior surfaces of ducts | Cover openings in ducts to prevent
SPF
SPF
Spray polyurethane foam
from entering the interior of the duct Ensure surfaces of duct are clean to promote proper adhesion of
SPF
SPF
Spray polyurethane foam
|
