Non Breathable Pitched Roof Underlay

TIL-R Classic Non Breathable Pitched Roof Underlay products are reliable, quick to install solutions. Suitable for use as an unsupported underlay, in traditionally ventilated cold tile or slated pitched roofs, they meet the requirements of BS5534 and can be used for installation in Wind Zones 1-5.

Available in a weight of 120g at 45 x 1m size with or without tape.

Typical Applications

Can be used on all tiled or slated pitched roofs

Can be used to seal roof lights, chimneys, verges, ridges and hips & valleys

Suitable for warm and cold applications


Clean to use

Quick to install

For ventilated roof construction

Printed cutting grid

Dual integrated tape (Underlay Plus)


Should not be considered as a primary waterproofing layer

Registered Office: SIG Trading Limited, Adsetts House, 16 Europa View, Sheffield Business Park, Sheffield, S9 1XH. Registered in England No. 01451007 VAT No. GB 487 01733