Medium-weight roofing underlay with waterproof adhesive strips

Advantages

  • Maximum protection for the roof structure: excellent hail impact resistance as per ETA-23/0532 and VKF (HR5 class)
  • Reliable rainproof roof: serves as a sub-roof underlay for roof pitches ≥10° (2.1:12) with TESCON NAIDECK as an additional sealing measure on rigid subsurfaces, as per ETA-23/0532
  • Efficient installation: serves as a roofing underlay with waterproof seams for roof pitches ≥14° (3:12) without the need for additional sealing measures, as per ETA-23/0532
  • Quick waterproof adhesion: with sealing lip at the 'connect’ self-adhesive strips on the long edges of the membrane
  • Flexible planning of construction schedules: at least 3 months of outdoor exposure
  • Permanent protection: high resistance to ageing and heat of the functional membrane
  • Reliable during the construction phase: suitable as a temporary covering during the construction period

Areas of application

For use as a diffusion-open roofing underlay on roof sheathing, MDF and wood-fibre underlay panels, and on all thermal insulation materials, including blown-in insulation materials.

Installation instructions

General conditions

SOLITEX QUANTHO 3000 connect membranes are to be installed with the printed side facing the installation technician. The membranes are to be installed as a roofing underlay or sarking membrane horizontally (parallel to the eave) in a taut manner with no sagging.

Roofing underlay membrane
The roof pitch must be at least 14° (3:12). National regulations should be taken into account here. Ensure that the subsurface is even when installing the membrane as a roofing underlay membrane. In the case of installation with seam and perforation protection, the general conditions included in the installation instructions and in ETA-23/0532 are to be taken into account.
When the membrane is used as a sarking membrane without sheathing, the rafter spacing is limited to 100 cm (3’).

When the membrane is used to create a rainproof sub-roof for roof pitches ≥10° (2.1:12), it is to be installed on even sheathing or another pressure-resistant subsurface. The SOLITEX QUANTHO 3000 connect membrane is located underneath the counter battens, and a nail-sealing tape such as TESCON NAIDECK is installed between the membrane and the counter battens in this application case.
Fasteners may not be applied in areas where water runs off in a collected manner (e.g. in roof valleys).

General
Ridge ventilation should be provided in the case of non-insulated attics that have not been converted. To do so, install the membrane in such a way that it stops 5 cm (2”) before the ridge. In addition, permanent ventilation fittings should be provided in the unconverted attic. The membrane should be protected against the long-term impacts of UV radiation (e.g. by darkening windows).

The membrane can be used as temporary covering for up to 4 months in Central and Northern Europe, Canada and the northern US, or 3 months in the rest of the world, to protect the building structure during the construction phase in accordance with the regulations of the Central Association of the German Roofing Trade (ZVDH).
The system components TESCON NAIDECK nail-sealing tape, ORCON F joint adhesive and TESCON VANA are to be used for sealing of overlaps and joints. The connect variant has two self-adhesive strips for reliable exterior sealing. The specifications of the applicable national regulations are to be taken into account when carrying out installation and adhesion.

Additional instructions for blown-in insulation materials
SOLITEX QUANTHO 3000 connect can also be used as a boundary layer for blown-in insulation materials of all types. The battens must already be fitted before the blowing-in process is carried out. A protruding lath must be installed under the supporting battens in the centre of the space between the rafters so that moisture occurring under the covering is drained off centrally between the rafters. The protruding lath should be at least 1 cm (3/8”) thicker than the counter battens. This limits the bulging of the membranes during the blowing-in process and creates the necessary cross-sectional area for ventilation.
If the insulation material is blown in from the outside, the blow-in holes can subsequently be taped using TESCON VANA with a width of 15 cm (6”).