II. Underlay with waterproof joints/as temporary covering w/o nail sealing, pitch ≥14° (3:12)
10. Installation of the membranes
If the membrane is used as a roofing underlay with waterproof adhesive joints or as a temporary covering for roof pitches ≥10° (2.1:12) or without the need for additional sealing measures for roof pitches ≥14° (3:12), there must be a pressure-resistant subsurface underneath the points where the counter battens are affixed (i.e. at the perforations through the membrane). Rafters or an even full-surface insulation layer with a pressure resistance of ≥ 100 kPa (14.5 psi) fulfil this requirement for a pressure-resistant subsurface (e.g. wood-fibre insulating panels).
For the case of solid-wood sheathing as a subsurface, see part III.
11. Staples
Fasten the membrane in the upper part of the overlap area.
Any other staples applied in the open areas of the membrane should be taped using the TESCON VANA system adhesive tape, applied with no folds or creases.
Rub the tape firmly using the pro clima PRESSFIX to secure the adhesive bond. Ensure that there is sufficient resistance pressure.