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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.
![](https://www.sigroofing.co.uk/wp-content/themes/roofing/images/fix-r/applications-icon.png)
Typical Applications
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Can be used on all tiled or slated pitched roofs
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Can be used to seal roof lights, chimneys, verges, ridges and hips & valleys
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Suitable for warm and cold applications
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Advantages
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Clean to use
![](https://www.sigroofing.co.uk/wp-content/themes/roofing/images/fix-r/bullet.png)
Quick to install
![](https://www.sigroofing.co.uk/wp-content/themes/roofing/images/fix-r/bullet.png)
For ventilated roof construction
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Printed cutting grid
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Dual integrated tape (Underlay Plus)
![](https://www.sigroofing.co.uk/wp-content/uploads/2020/10/TIL-R-Classic-Non-Breathable-45x1m-134x450.jpg)
![](https://www.sigroofing.co.uk/wp-content/themes/roofing/images/fix-r/limitations-icon.png)
Limitations
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Should not be considered as a primary waterproofing layer