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LiquiTOP PU is used as the waterproofing of the Bauder LiquiTOP Roof Systems. It is suitable for use in cold roof and warm roof situations. It is compatible with a variety of roof surfaces, including asphalt, bituminous felt, PVC single-ply,

concrete and metals.


LiquiTOP PU is a single component, moisture triggered polyurethane, cold applied liquid waterproofing resin, for

use in LiquiTOP Roof Systems. It is applied by roller and is fully reinforced with Bauder LiquiTOP Glass Fibre Mat.

The moisture triggered technology utilises atmospheric and substrate moisture to initiate the curing mechanism

forming a fully cross linked polymeric waterproofing membrane.

Features and benefits:

  • Cold applied liquid
  • Monomer stripped isocyanate prepolymer
  • Elastomeric
  • Vapour permeable
  • Chemical resistant
  • Good adhesion to most substrates
  • UV resistant throughout the whole membrane
  • Seamless waterproofing membrane
  • BRE Green Guide generic product rating: Up to A+ depending on the roof construction
  • Drum size: 15 L.
  • Single pack
  • Early rain resistance

General information






A comprehensive range of guarantee options are available. Please contact your local Bauder Area Technical Manager for more information.



Pr_35_31_68_64 Polyurethane (PUR) waterproof coatingsPrimary


J31/47 Waterproof coating

J31/353 Waterproof coating

Specification data - Polyurethane (PUR) waterproof coatings

Third-party certification

BBA certificate 20/5789. Environmental Product Declaration (EPD) EPD-FEI-20180092-IBG1-EN.


Mist Grey (Approx. RAL 7040).

Dark Grey (Approx. RAL 7011).

Fire performance

To DD CEN/TS 1187 (test 4)/ EN 13501-5: BROOF(t4).

Service temperature

-30 to +70°C.

Environmental information

Country of product manufacture

United Kingdom

Embodied carbon

Please refer to EPD on the Bauder website.