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Sika® Liquid Plastics Liquid Applied Membrane (Cold Roof System)

Verified by manufacturer 12 days ago

Sika Liquid Plastics

High performance, one-component, high solids, UV-stable, liquid applied polyurethane roof waterproofing system with low odour.

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+44 (0)1772 259781 Website


For roof waterproofing solutions in both new construction and refurbishment projects.

  • For cost efficient life cycle extension of failing roofs
  • For odour sensitive areas
  • For insulated and non-insulated roof designs


High performance, one-component, high solids, UV-stable, liquid applied polyurethane roof waterproofing system with low odour.

System includes:

  • Waterproofing (Top Coat): Sika® Decothane Ultra
  • Waterproofing (Reinforcement): Sika® Reemat Premium
  • Waterproofing (Base Coat): Sika® Decothane Ultra Base Coat
  • Carrier Layer: S-Vap 5000E SA
  • Primer: Primer 600/610

-Waterproofing (top coat):

Decothane® Ultra is a cold-applied, one component, seamless, highly elastic, UV stable and moisture-triggered polyurethane membrane with significantly reduced odour. It cures to form a seamless,

durable and weather-resistant waterproofing solution for exposed roof areas.

  • Low maintenance
  • One component - no mixing, easy and ready to use
  • Cold applied – requires no heat or flame
  • Minimal odour - suitable for odour sensitive projects
  • High solids
  • Seamless membrane
  • Compatible with Sika® Reemat Premium – easy to detail
  • Easily recoated when needed - no stripping required
  • Elastic - retains elasticity even at low temperatures
  • Good adhesion to most substrates – see table
  • Free from rain damage almost immediately on application

-Waterproofing (reinforcement):

Sika® Reemat Premium is a glass fibre mat reinforcement for Decothane® and Sikalastic® Liquid Applied Membrane systems.

-Waterproofing (base coat):

One-part low odour polyurethane liquid applied base coat for use in conjunction with Decothane Ultra systems.

-Carrier Layer:

  • S-Vap 5000E SA is a multi-layer self-adhesive vapour control layer made of polymer modified bitumen with a glass-fibre mat reinforcement and an aluminium foil as top layer.

- Primer

  • Primer 600: Synthetic rubber and resins based primer.
  • Primer-610 Spray: Solvent-based synthetic-rubber bonding agent in a pressurized canister system.

Approvals/ Standards:

  • British Board of Agrement (BBA) certified No. 14/5158
  • European Technical Approval (No.ETA - 14/0331)
  • External fire performance according to ENV 1187:BRoof(t1) + (t4) over Built up roofing system, classification under BS 476-3: 1958 EXT F. AB
  • Odournet – Report Number 504 - 2014.

General information






Ss_30_40_30_40 Liquid-applied cold roof covering systemsPrimary


J31/5 Cold deck roof coating

J31/110 Cold deck roof coating

Specification data - Liquid-applied cold roof covering systems



Horizontal work

Only required if using a self-adhesive AVCL as a temporary waterproofing layer.

SikaRoof® Primer 600.

Sika® Primer 610 Spray.

Skirtings and vertical work

SikaRoof® Primer 600.

Sika® Primer 610 Spray.

Carrier membrane



S-Vap 5000E SA.



Liquid-applied waterproofing



Sika® Decothane Ultra Base Coat and Sika® Decothane Ultra.

Base coat and top coat.


Sika® Reemat Premium.

System accessories

SikaPad® Paving Support Pads.

SikaRoof® Light.

SikaRoof® Lightning Conductor Clip CT.

Sika® Liquid Plastics Constant Force Post.

Sika® Liquid Plastics Decotrim®.

Sika® Liquid Plastics Flat Roof Outlets.

Sika® Liquid Plastics Versirail.

Top surface colour

Other colours available upon request.

Cloud Grey (RAL 7045).

Slate grey (RAL 7015).

BIM objects

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