AlphaGuard BIO 20

20 year warranty

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AlphaGuard BIO 20 is a two-part, polyurethane, liquid applied roofing system that can turn your older but still functional roof into a long-lasting, highly efficient weatherproofing system by overlaying.
The system can waterproof over existing flat roof build-ups and structural roof decks.
It can also be used as a full system build up for either roof replacement or new build
construction projects.

To obtain superseded or historical documents please email for further support.
The product information presented on the website is the current version.

  • Two component chemical cure technology
  • Very low odour
  • Easy to maintain and repair
  • Flame-free installation
  • Very good resistance to chemicals, foot traffic, hail
    and mould/mildew/fungus
  • High thermal resistance
  • Excellent cold-weather flexibility, tensile strength and
    elongation properties
  • Cold and warm roof applications available
  • Easy application by brush, roller or squeegee. Base and top coat composition is predominantly castor oil.
  • Independently certified by the BBA to Broof(t4) classification (BS EN 13501-5). PIR & Mineral wool 25mm to 500mm fire test compliance. Independently certified by the BBA to work harmoniously with a blue roof application.
Tremco Roofing - AlphaGuard BIO 20 SS (en-GB).pdf System Build Up
Tremco Roofing - RW411 AlphaGuard WB Primer TDS (en-GB).pdf TDS
Tremco Roofing - RW412 AlphaGuard C-Prime TDS (en-GB).pdf TDS
Tremco Roofing - RW414 AlphaGuard BIO Reactivation Primer TDS (en-GB).pdf TDS
Tremco Roofing - RW415 AlphaGuard WB Primer TDS(en-GB).pdf TDS
Tremco Roofing - RW416 AlphaGuard Biowash TDS (en-GB).pdf TDS
Tremco Roofing - RW431 AlphaGuard BIO Base Coat TDS (en-GB).pdf TDS
Tremco Roofing - RW451 AlphaGuard BIO Top Coat TDS (en-GB).pdf TDS
Tremco Roofing - RW490 AlphaGuard BIO 225g Reinforcement TDS (en-GB).pdf TDS
Tremco Roofing - Flat roofing solutions brochure.pdf Brochure
Tremco Roofing - Flat roof asset management brochure.pdf Brochure