Liquasil DG Dilapidations Grade Flat Roof Waterproofing System


Designed specifically to meet the requirements of dilapidations surveyors working on behalf of landlords or tenants.

Suitable for direct installation to the following substrates:

  • Timber;
  • Insulation boards;
  • Concrete;
  • Felt;
  • Asphalt.


Polyurethane (PU) Dilapidations Grade waterproofing system for flat roofs.

Features and benefits:

  • Durable and affordable.
  • Easier to install than felt or asphalt and there are no hot works, so it’s safer to use in most circumstances.
  • Cost effective.
  • Liquasil DG uses hybrid Aliphatic / Aromatic polyurethane components for maximum durability at an affordable rate.
  • By integrating a high quality glass fibre mat into the initial embedment coat, the polyurethane coating is significantly strengthened.
  • It adheres to most substrates without the need for additional primers. It can be accelerated (optionally) to provide a quick cure that is ready for over-coating on the same day.
  • The top coat provides exceptional UV resistance and will accept foot traffic without the need for additional reinforcement or aggregate.
  • If a designated walkway is required, aggregate can be broadcast into the top coat, or mats can be placed on top without detriment.
  • Single point guarantee.
  • 15, 20 and 25 years product guarantees available.
  • Life expectancy to 25 years (depending on top coat thickness).
  • Optional insurance-backed or full insurance, latent defects guarantees availbe for up to 12 years via Liquasil Approved Installers at extra cost.

Surface preparation:

See manufacturer's literature for details on installation and surface preparation techniques.

General information


Dark grey/ black




Formless (liquid).


25 kg drums.


15, 20 or 25 years, depending on the thickness of the top coat applied.

Consult manufacturer for details.

Uniclass 2015

Pr_35_31_68_64 Polyurethane (PUR) waterproof coatingsPrimary


J31/10 Warm deck roof coating

J31/110 Cold deck roof coating

J31/120 Warm deck roof coating

J31/130 Inverted roof coating

J31/5 Cold deck roof coating

Specification data - Polyurethane (PUR) waterproof coatings Enhanced data


Dark grey/ black.

Environmental information

Country of product manufacture

United Kingdom


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