Bauder Total Roof System PLUS

Bauder Total Roof System PLUS (BTRS PLUS) is suitable for a variety of applications on both new build and refurbishment projects. It can be used in warm, cold, and inverted roof scenarios. There is also the option of using a root resistant cap sheet, making this waterproofing system ideal for green roof situations, too. 

Key features

Here are some of the key features that make up the BTRS PLUS system:
  • Extremely robust and tough
  • Life expectancy of > 35 years
  • Loading of up to 2000Kg/m²
  • Capping sheets with tensile strength up to 1450N/50mm incorporating 300g/m² glass/polyester composite reinforcement
  • Patented self-adhesive DUO product
  • Fire classification BROOF(t4). Verified by the BBA as ‘unrestricted’ and is therefore suitable for use on any part of the roof.
  • Outstanding guarantee package offer available.
  • Ability to withstand climatic extremes
  • BTRS PLUS satisfies requirements of Part B of Building Regulations.
  • The SBS modified elastomeric bitumen, used on the underside, provides outstanding flexibility to cope with climatic extremes of over 150⁰C variation.
  • APP modified bitumen, used for the upper coating, offers increased resistance to ultraviolet radiation as well as improved weathering that contributes to a longer service life.
  • The membrane resists impact and tearing
  • Due to our special coating formulation, BauderKARAT is estimated to be more than 10% quicker to install than our K5K cap sheet used in our BTRS system.
  • Option of root-resistant cap sheet for green roofs.
1 BauderKARAT cap sheet 5.2mm thick dual modified APP/SBS, torch applied bitumen cap sheet.
2 BauderTEC KSA DUO 35 underlayer Self-adhesive elastomeric bitumen underlayer.
3  PIR FA-TE insulation or PIR FA tapered (laid to falls) Bauder PIR FA-TE Insulation is a rigid urethane foam insulation faced on both sides with aluminium foil. 


BauderPIR FA tapered insulation provides falls to a roof instead of incorporating into structure.
BauderTEC KSD Mica Tear resistant, aluminium lined self-adhesive bitumen air & vapour control layer.

When to specify BTRS PLUS

Bauder’s long-established and fully integrated bituminous roof systems incorporate modified bitumen membranes and high-performance insulation.  Bauder manufactures all of its membranes and insulations to exacting specifications and tolerances, ensuring full compatibility of the components used within the system build-up.  BTRS PLUS incorporates SBS and APP modified bitumen membranes, providing a quicker installation with superior strength and longevity. BTRS PLUS is durable and robust, making it the perfect solution for most projects.

Our BTRS PLUS system holds fire classification BROOF(t4) for compliance with building regulations under TS 1187 test method 4 for external fire exposure to roofs, verified by the BBA, BTRS PLUS is deemed ‘unrestricted’ and suitable for use on any part of a roof.

Cap sheet colours

BauderKARAT, the capping sheet used in the BTRS PLUS system, is Charcoal Grey, providing a clean finish for your flat roof project. BauderSMARAGD is a root resistant cap sheet used for application in green and blue systems as part of the Bauder Total Green Roof System PLUS (BTGRS PLUS). BauderSMARAGD has a green-white finish.

Charcoal Grey     Green-white

Approvals, Certifications and Guarantee

Environmental Credentials

BTRS PLUS has the following environmental credentials:
  • BTRS PLUS products are listed on BBA Certificate 10/4744 for Bauder Total Roof System
  • Environmental Product Declarations (EPD) for bitumen membranes and insulations
  • The Eco Platform accreditation is recognised by the BRE as valid and transferrable environmental documentation towards obtaining BREEAM credits within their assessment process for BREEAM UK New Construction 2018
  • Bauder insulation is CFC and HCFC free with zero ODP
  • BRE Green Guide Generic A Rating for PIR insulation Element No 1415320205
  • Manufacturing offcuts of PIR are shredded and recycled for use in hand cleansers and decking material
  • Our manufacturing factories operate an Environmental Management System that has been certified to be in accordance with ISO 14001 2015 and ISO 50001 2011 for Energy Management
Read more about Sustainability at Bauder 

Installation & Maintenance

The quality and experience of an installing operative is a vital part of 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 standards demand.

Go to installation information ►
Go to maintenance advice ►

Torch Free Detailing Methods

Our torch-free detail design specifically delivers secure safe application techniques in the vicinity of combustible construction materials located on, or connected to, the roof. This includes timber substrates or upstands; abutments to cladding, roof tiles, slates or thatch; or even debris such as dry leaf material that is at risk of ignition.  The application methods meet NFRC Guidance Document 'Safe2Torch'.

Go to Torch-Free Detailing ►


Contact us today about your project

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