LiquiTOP System

Bauder LiquiTOP is a moisture triggered curing, single component, glass fibre mat reinforced polyurethane liquid, for the refurbishment of existing flat roofs and new build applications.

LiquiTOP Roof System achieves a CCPI mark which recognises that any claims made about it have been independently assessed across 11 clauses, providing greater clarity by offering improved product information. This gives specifiers confidence in the knowledge that they will have unambiguous information when deciding which of our systems is best for their new build or refurbishment project

When to specify...

Bauder LiquiTOP system is ideal for the refurbishment of existing roofs and particularly suited to those that have a high degree of complex detailing, around high concentrations of rooftop plant, and in constrained areas of access. It can also be used in roof terrace applications where the system is laid to falls and is protected by slabs or decking on pedestals.

The system can be installed as a two-coat or three-coat (LiquiTOP 3COAT System) solution and fully bonds to the substrate, such as a direct waterproofing overlay to an existing flat roof.

The cold application means hot works are not necessary for the installation of the system making it ideal for many sites, e.g. production facilities where fire safety constraints apply.

Plus points

■□ Suitable to overlay existing systems.
■□ Totally cold applied liquid with glass fibre mat reinforcement.
■□ Wet-on-dry seamless application.
■□ Liquid formula allows complex detailing to be simplified.
■□ Three-coat option for additional service life.
■□ Comprehensive range of guarantee packages.

Verified properties

CCPI Verification 0007700034/1125​:
■□ This systems CCPI mark provides accuracy of data delivering assurance to specifiers. 

BBA Certificate 20/5789:
■□ Fire classification BROOF(t4) to BS EN 13501-5 tested to TS 1187 test 4 for external fire exposure on defined permutations of product build up. 
■□ Fire properties – membranes deemed “unrestricted” in certain circumstances as categorised in BBA certificate.  
■□ Service life >20 years for LiquiTOP and >25 years for LiquiTOP 3COAT system.
Go to certifications 

EPD Certification:
■□ LiquiTOP Products.
■□ Bitumen Membranes.
■□ Insulation 
Go to certifications 
Waterproofing system                                                         Insulated system


LiquiTOP PU is available in two colours, either of which can be used as the first/embedment coat or top coat:
Dark Grey         Mist Grey


  Function Product name Thickness
1 Waterproofing Bauder LiquiTOP PU
LiquiTOP Glass Fibre Matt
1.8 2.9
2 Carrier membrane BauderTEC DBR 06 0.6 0.6
3 Warm roof insulation options BauderPIR FA
BauderPIR FA tapered
BauderROCK flatboard
BauderROCK tapered
(or as specification)
4 Air and vapour control layer BauderTEC DBR 06 0.6 0.6
System build-up 143 8.3
In-depth and up-to-date product specific technical data is available for each element within a system.
Download from our technical-centre

Other configurations:
LiquiTOP 3COAT System
LiquiTOP 3COAT Insulated System

Approvals, certification and guarantee

■□ Comprehensive range of guarantee packages to fulfil cover requirements for the project (dependant on system/product
      selection). For more information contact our technical department for a sample guarantee outlining cover level, terms
      and conditions.
■□ CCPI Verification Number 0007700034/1125 for LiquiTOP Roof System.
■□ BBA Certification - The LiquiTOP System has been tested and certified by the BBA and carries certificate number
      20/5789  which covers The Bauder LiquiTOP System and The LiquiTOP 3COAT System.
■□ BauderPIR Insulation - Within a warm roof waterproofing system BauderPIR insulation is not exposed and is
      protected through the performance of the cap sheet and achieves the system classification, BROOF(t4), for flat
      and sloping roofs.
■□ BauderGLAS and BauderROCK - These insulants are non-combustible and are used for construction projects requiring            additional safety criteria.  
■□ Safety Conscious Installation Technology - The Construction, Design and Management Regulations 2015
      place specific duties on designers, contractors and building owners to take fire safety into account throughout a
      building’s life cycle, making sure that all people on site are protected if a fire does ever occur. The Bauder
      LiquiTOP System is cold applied and no hot works are required for installation, this eliminates the risk of fire.
      This installation method means that in refurbishment situations buildings can remain fully operational throughout, with
      minimal disruption.

View certifications here ►


■□ Life-cycle costings - The flexibility of the LiquiTOP PU is such that it can be overlaid at the end of its service life with
      the application of an additional layer to extend the lifespan of the roof by a further ten years each time.
■□ Product composition - The low-monomer, VOC content in The LiquiTOP System reduces the amount of volatiles
      emitted into the environment at application to offer a safer and more environmentally conscious alternative than many        other liquid waterproofing products on the market, providing a securer working environment for the client and
      contractor. This low-monomer formulation makes The LiquiTOP System one of the safest and environmentally friendly,   
      single-component moisture-triggered polyurethane waterproofing system products on the market.

Read more about sustainability at Bauder ►

Installation and maintenance 

The quality and experience of the installing operative is paramount to ensuring a successful project. Bauder Approved Contractors are the only people fully trained and certified to install our products. They provide the necessary experience that our exceptional guarantee demands.
Go to approved contractor information ►
Go to maintenance advice ►

Contact us today about your project

Each project is unique in its requirements, but we have case studies and examples of our work available for you to look at. If you are looking for a cold applied liquid roof system, then get in touch with our team to discuss your project’s individual needs.

Discuss your Flat Roof Project

Other information