300 High Performance Underlay

An underlay manufactured from a specially formulated polyethylene with a multifilament polypropylene reinforcement grid.

Suitable for use on all tiled roofs where insulation is provided at ceiling level and the roof is ventilated in accordance with BS 5250.

Properties:

• Designed to replace traditional BS 747 Type 1F bituminous based felts.

• Extremely durable; will not rot at gutter level.

• Lightweight and strong.

• Superior tear resistance.

• Comfortable to handle.

• Offers greater strength and higher performance than Decra TwoF underlay.