A DIY roofer needs to know whether bonding adhesive can be safely applied directly to granule-surfaced SBS modified bitumen membrane for EPDM installation, or if a geotextile separation layer is required to prevent chemical degradation.

Workarounds Described

• using geotextile layer as a separator to avoid chemical reaction
• considering leaving EPDM loose/unadhered with mechanical fastening at top
• considering installing OSB or PIR boards over SBS to fully adhere

Implied Software Gaps

• Chemical compatibility database for roofing adhesives and membranes that resolves conflicting manufacturer advice
• Interactive installation guide that specifies required separation layers based on membrane and adhesive combination

ChemCompass Roofing Assistant

A mobile app that provides instant, authoritative chemical compatibility checks for roofing adhesives and membranes. Users input product names or scan barcodes to get verified application guidance, including layer requirements and safety notes. It resolves conflicting distributor advice with manufacturer-vetted data.