Universal Non Breathable underlay is a 140g/m² membrane that comes packed full of features and benefits designed to promote consistent installation to the British Standard:
Integrated tape system for sealing underlay laps.
- Creates an impervious barrier with superb wind-uplift resistance
- No need to increase laps to coincide with tile batten courses, minimising cost
- No need to use an additional ‘fly’ batten to secure laps.
Printed guidance lines
- Provide a visual reference to ensure sufficient lap to the British Standard
- Ensure that the underlay is laid consistently and straight