Installation to be made on a solid underlay
Kerabit 700 UB is laid over tongue-and-groove boards or building boards suitable for the purpose, parallel to the ridge. Installation is carried out by nailing the underlay in place along the adhesive edge using concealed nailing.
Indicative suitability for different water roof materials:
- bitumen shingles, inclination 1:5 or steeper
- machine-seamed tin roofing, inclination 1:10 or steeper
- tile roofing, inclination 1:5 or steeper.
Check the inclination and materials in the construction plan.
Installation in hanging solutions
The underlay is always laid perpendicular to roof trusses. In hanging solutions, the inclination must be at least 1:4 (14˚). The distance between the roof trusses must be no longer than 1200 mm. The underlay is laid in such a way that it hangs down 10 to 20 mm between the roof trusses.