Rooflock Twelve Podium Waterproofing

BBA and ETA certified, seamless liquid-applied roof waterproofing system

Rooflock Twelve for podium waterproofing

Rooflock Twelve is a seamless liquid-applied waterproofing system for waterproofing both new-build and refurbishment projects, that is appreciated by contractors for its ease of use.  Rooflock Twelve Roof Waterproofing System offers a safe, flexible method of waterproofing roofs, balconies and walkways, including green roofs, inverted roofs, podium decking and high traffic areas.

BBA and ETA Certified

Rooflock Twelve is fully certified by the British Board of Agrément (Certificate No. 17/5455) and to ETAG 005 (Certificate No. ETA 14/0258) and has a certified durability of in excess of 25 years..

A guaranteed podium waterproofing system

We provide the complete liquid waterproofing system, including the structural components and accessories required. With warranties of 10 and 20 years, you have the assurance of a high performance and durable podium waterproofing system.

Approved contractors

The Rooflock Twelve system is installed by a national network of approved contractors to ensure ongoing high standards of workmanship.


The Rooflock Twelve system is typically applied using the wet-on-wet technique, which crucially ensures total integration of the embedment layer and top layer, and avoids delamination risks. Installation is rapid and weather-related delays are reduced.


Rooflock Twelve coating does not contain plasticisers, eliminating the risk of waterway contamination, and ensuring that the system does not go brittle over time.


  • Cold applied
    –   no hot works insurance
  • BBA and ETA certified for in excess of 25 years
  • Guaranteed podium waterproofing system
    –   10 and 20 years warranties
  • Fully reinforced, seamless podium waterproofing
    –   no joints or fixings, even at terminations and penetrations
    –   high strength and durability
  • Vapour permeable
    –   suitable for refurbishment applications
  • Free from plasticisers
    –   reduces pollution of waterways
    –   remains flexible and does not go brittle over time
  • Compatible with almost all substrates
  • Designed for both new build and refurbishment projects

Compatible substrates

  • Asphalt
  • Metal
  • Bitumen
  • Insulation (1) (2)
  • Plywood (1)
  • Brickwork
  • PVC Single Ply membranes (2)
  • Concrete
  • Solar reflective coatings
  • Fibre cement
  • Masonry
  • GRP
  • Stone
  • Hot melt coatings
  • Timber

(1) Requires Rooflock carrier membrane

(2) Contact Rooflock Technical department