# TPO Membrane Technical overview ## Roll-supplied thermoplastic polyolefin membrane for single-ply roofing Josoor supplies TPO waterproofing membrane in rolls. TPO means thermoplastic polyolefin: a factory-formed sheet used to create a single-ply waterproofing layer. Adjacent sheets are joined by heat welding rather than forming the membrane by mixing and curing a liquid coating. ### Technical overview Material Thermoplastic polyolefin (TPO) sheet membrane Supply format Waterproofing membrane supplied in rolls Roof build-up Single-ply sheet waterproofing over the specified supporting roof assembly Seam formation Hot-air-welded overlaps between compatible TPO sheets Roof attachment Mechanical attachment or adhesion, as specified for the selected membrane and roof assembly Detailing Compatible TPO flashings and accessories at upstands, drains, curbs and penetrations ### Typical applications by grade - Flat and low-slope roofs on warehouses, factories and logistics buildings. - Commercial and residential roof waterproofing within a specified single-ply roof assembly. - Roof refurbishment over a prepared, compatible supporting build-up. - Waterproofing details around roof equipment curbs, parapets, outlets and penetrations using compatible TPO accessories. PVC and TPO are different polymers: their sheets and welding accessories are not interchangeable. Exposed-roof performance, reinforcement and any reflective finish belong to the selected grade. Send the roof area, supporting build-up, attachment method and required sheet thickness for a TPO membrane roll quotation and product data sheet. Request a quotation, product data sheet, or supply information directly from Josoor. Loading technical documents… ## Company information - [About Josoor](https://josoorgroup.com/about) - [Contact](https://josoorgroup.com/contact) - [Website terms](https://josoorgroup.com/terms) - [Analytics privacy notice](https://josoorgroup.com/privacy) --- Canonical: https://josoorgroup.com/industries/construction/construction-chemicals/tpo-membrane