Reroofing Over Self-Adhered Membranes

When it’s time to replace a roof, what happens if the existing roof already has a self-adhered membrane installed on the deck? In this episode of The FORTIFIED Factor, the AI Experts (informed by Knockout Inspections) break down the engineering guidance behind reroofing over self-adhered membranes and what homeowners, contractors, and inspectors need to know to stay FORTIFIED-compliant.Self-adhered polymer-modified bitumen membranes are widely used in the FORTIFIED Roof™ sealed roof deck system because they adhere directly to the roof deck and can remain in place even if the roof covering is lost during severe weather.  But that durability can raise an important question: How do you reroof when the membrane is bonded to the decking?In this episode, we cover:Why self-adhered membranes are a powerful defense against wind-driven rainThe challenges of removing adhered underlayment during reroofingWhen installing a second layer of self-adhered membrane is allowedWhen a two-ply felt sealed roof deck system can be used insteadWhy closed-cell spray foam full-fill applications are not accepted for this scenarioHow inspectors verify the condition of the roof deck from the atticThe documentation required for a FORTIFIED re-roof projectIf you’re planning a reroof, working toward a FORTIFIED Home™ designation, or simply want to better understand how resilient roofing systems work, this episode explains the technical bulletin guidance in clear, practical terms.A stronger roof means a stronger home—and better protection when severe weather strikes.Have questions about FORTIFIED roofing or reroofing projects?Contact Knockout Inspections at 855-GO-FOR-KO (855-463-6756) or visit fortifiedhome.com to learn more.