Planning and construction guidelines
Areas of application
The pro clima SOLITEX ADHERO self-adhesive and airtight weathering-protection membrane can be used:
- to achieve airtightness on the interior and exterior of wood-based products and mineral subsurfaces,
- for temporary protection of wall elements and intermediate ceilings during construction on multi-storey wooden-frame buildings,
- on the exterior of wooden-frame walls behind ventilated pre-wall shells,
- as a nail-sealing overlay on boarding and suitable wood-based panels (e.g. cement-bonded particleboard in accordance with DIN EN 634-1) underneath slate coverings.
Use to achieve airtightness of walls on timber structures
pro clima SOLITEX ADHERO can be used to achieve airtightness on timber-element walls (wooden-frame, ‘Brettstapel’ and CLT elements) on the inside and outside. In the case of membranes applied on the exterior in particular, it should be ensured that the airtightness layer of the walls is bonded to the airtightness layers of the roof surfaces. For installation on the exterior, this product additionally provides weathering protection during the construction phase. Full-surface adhesion with the relevant subsurface also ensures that seepage behind the membranes cannot occur.
Use to achieve airtightness of walls on masonry and concrete structures
Unplastered masonry and concrete walls, e.g. made from pre-fabricated components, are regarded as not being airtight due to their joints. SOLITEX ADHERO can be stuck directly onto the exterior of stable mineral subsurfaces. Adjacent airtight building components also have to be stuck to the membrane in the area around joints to ensure the airtightness of the surface.
Use as temporary protection on timber element structures during construction
SOLITEX ADHERO can be used as temporary protection at ceilings and floors on multi-storey timber construction projects. Run-offs that remove water from the intermediate ceiling and/or building are to be provided so that rainwater does not collect on the membrane. Full-surface adhesion prevents moisture from spreading under the membrane if the membrane should be damaged during the course of construction. SOLITEX ADHERO is to overlap by a minimum of 30 cm (1 ft) onto adjacent elements at element joints. Timber (material) surfaces that may have become damp can quickly dry out again thanks to the low diffusion resistance.
Use for the protection of timber structures behind pre-wall shells
After driving rain has fallen on a pre-wall shell (e.g. faced masonry), heating up can result in a microclimate with increased relative air humidities. To prevent this moisture entering into the component, DIN 68800-2 recommends that a membrane with a slightly increased diffusion resistance should be fitted on the exterior of wooden-frame construction elements. SOLITEX ADHERO has an sd value of 0.40 m (g-value: 2 MN·s/g) for this purpose, which protects the component from the outside and also allows for drying out. SOLITEX ADHERO can be stuck directly onto stable mineral subsurfaces. Pretreatment with TESCON PRIMER RP may improve adhesion to subsurfaces.
Use as a nail-sealing overlay underneath slate coverings
Thanks to its full-surface adhesion, SOLITEX ADHERO seals nail holes in suitable wood-based panels (e.g. cement-bonded particleboard in accordance with DIN EN 634-1) or solid-wood boarding, thus ensuring greater component reliability. It should be taken into account here that the sealing function is ensured when nails are hammered into the timber or timber material subsurface. This protection may not be ensured in the case of nail holes at joints.
Moisture in materials due to construction work
The low sd value of SOLITEX ADHERO allows moisture to dry out of the construction materials that are used. If this drying takes place too quickly (e.g. due to heating), small bubbles may form behind the membranes due to the water vapour that results. The effectiveness of the weather protection as an airtight layer is not compromised by this, subject to the condition that the bubbles do not open the membrane overlaps.
In contrast with the case of membrane overlaps on the interior, quality checking using the differential pressure procedure (e.g. using BLOWER DOOR) is only possible with overpressure for membrane installation on the exterior. In this case, fog must be generated in the interior of the building using a fog machine. The airtightness of detail features can then be checked on the exterior.
No tent effect
The pore-free SOLITEX ADHERO offers a particularly high tightness to driving rain. The membrane can be laid to cover the entire surface of insulation materials or linings. As a result of the functional film being monolithic and having a multi-layer construction, a tent effect is reliably prevented.
The term ‘tent effect’ refers to the phenomenon that watertight tent sheets cause the entry of large amounts of moisture into building components at their points of contact.