BauderTEC KSA DUO Underlayer

BauderTEC KSA DUO is a technically advanced self-adhesive SBS elastomeric bitumen underlayer with “DUO” lap technology to ensure thorough sealing of lap joints, even in lower temperatures. The product features a glass lattice reinforcement for strength and stability.

Technical data

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Roll size 1 x 7.5m
Surface finish Top: Foil
Bottom: Release film over self-adhesive bitumen
Weight  3.5Kg/m²
Thickness  3mm
Reinforcement 200g/m2 Glass lattice
Tensile strength (EN 12311-1) Length ≥ 1000N/50mm
Diagonal ≥ 1000N/50mm
Elongation at break (EN 12311-1) Length ≥ 2%
Diagonal ≥ 2%
Heat stability (EN 1110) +100°C
Cold bending (EN 1109)

-25°C Top
-30°C Bottom

This underlayer is suitable for various Bauder bituminous systems including:
  • Bauder Total Roof System (BTRS) - suitable for a variety of applications on both new build and refurbishment projects and 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.
  • Airtech System - is a 4.2mm thick elastomeric bitumen membrane that withstands loads of up to 2000Kg/m2. The system can be used as a full system build-up or for detailing purposes only where Torch-Free application is a requirement.The reinforcement used in the capping sheet is made from recycled polyester.
  • Torch-free Detailing - This option is integrated into all the Bauder bituminous waterproofing solutions, including Bauder hot melt, to give versatile safe installation techniques for all roof types, site conditions and the client’s budget.