TinnerFlow™2nd YearDuct Systems
All duct passing through unconditioned attics, garages, or crawl spaces must be insulated per energy code — typically R-6 or R-8. Uninsulated duct in thes…
All duct passing through unconditioned attics, garages, or crawl spaces must be insulated per energy code — typically R-6 or R-8. Uninsulated duct in these locations loses significant energy and can cause condensation.
Do not hide, force, cover, or “make it work” if this affects safety, access, airflow, rated assemblies, supports, equipment, or inspection. Stop and verify the approved correction.