Bituminous Systems - Airtech System

When to specify...

When a high quality bitumen system is required, but  site conditions prohibit the use of hot works, Airtech is an extremely effective torch-free bitumen membrane solution using hot air welding at the laps. It can be specified in both warm and cold roof design on all normal types of deck construction and is equally suited to either new build or refurbishment projects.  Our Airtech System meets current UK Building Regulations Part B for external fire protection.

NBS and BIM specificationsSystem summariesSystem summaries


1 Bauder KSO SN or Bauder KSO-P SN cap sheet KSO SN. Self-adhesive elastomeric bitumen capping sheet.
BauderTEC KSA DUO underlayer Self-adhesive elastomeric bitumen underlayer
PIR FA-TE or PIR tapered insulation (laid to falls) Bauder PIR FA-TE insulation is a rigid urethane foam insulation faced on both sides with aluminium foil. 

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

Key features

•  4mm thick elastomeric bitumen membrane
•  Withstands loads of up to 2000Kg/m
•  Flame-free installation processes
•  Withstands climatic extremes of over 100C variation
•  Expandable graphite fire retardant prevents spread of flame


•  Heavy duty, robust and extremely tough
•  Life expectancy of over 30 years
•  Avoids inherent risks of using a naked flame
•  Resistant to European climatic conditions
•  Satisfies requirements of Part B of Building Regulations

Approvals, certification and guarantee

•  Comprehensive range of guarantees for this system
•  BS EN 13707:2004 Reinforced Bitumen Membrane Sheets
•  Meets Building Regulations for External Fire Exposure Roofs. Fire rating explained ►

Environmental credentials

•  Reinforcement used in capping sheet is made from recycled polyester
•  Bauder insulation is CFC and HCFC free with zero ODP
•  BRE Green Guide Generic A Rating (A+ to E scale) for PIR insulation

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 ►

Safe2Torch industry initiativeBauder 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 such as timber substrates or upstands; abutments to cladding, roof tiles, slates or thatch; or even debris such as dry leaf material that is at risk from ignition.  The application methods meet NFRC Guidance Document 'Safe2Torch'
Go to Torch-Free Detailing ►

Cap Sheet Colours

The BauderTEC KSO SN cap sheet is available in brown and natural slate.

Brown -  Natural Slate - 

The BauderTEC KSO-P SN cap sheet is available in charcoal grey.

Charcoal Grey - 

Technical Excerpt

Life expectancy: > 30 years
Loading: up to 2000Kg/m²
Tensile strength: 1000N/mm²
Standards: BS EN 13707:2004 Reinforced Bitumen Membrane Sheets

Technical downloads

CAD drawings (dwg files) ►
System summary ►
System maintenance advice ►
ISO 9001:2015 ►
ISO 14001:2015 ►
Bauder GmbH ISO 50001:2011 ►

Torch-free detailing

Brochure download ►
Web page ►