roofing
Reviewed and updated October 27, 2026
Elevate’s English-for-Poland page describes EPDM and TPO as single-ply membranes for flat or low-slope roofs, including residential projects. EPDM seams use self-adhesive tapes; TPO seams are heat-welded. Dimensions vary; attachment may be adhesive, mechanical or ballast and depends on project. Elevate
This describes systems, not homeowner work. Ask the roofer to explain the seam method; do not access the roof.
For each bid, record exact manufacturer/product, stated thickness and width, attachment method, and current installation-document title/revision. Keep blanks unknown.
Example (hypothetical): Bid A specifies EPDM with adhesive attachment; Bid B names TPO but leaves attachment blank. Ask both bidders to complete the same record and explain the difference before choosing.
Fit, availability, local requirements and performance at this roof remain unresolved; request qualified review for the exact products and proposed assembly.