Permeable, weldable roof lining strips


  • Homogeneously weldable in the SOLITEX WELDANO system
  • Also suitable for large counter battens
  • Extremely high tear-resistance
  • Permeable, airtight, rainproof and watertight
  • Can be easily adapted for smaller dimensions using a knife or scissors

Areas of Application

For reliable integration of counter battens into the SOLITEX WELDANO system.

Photo gallery, Installation

Photo gallery: Installation, Sealing at skylights

Photo gallery, Installation: pipe feed-throughs


Before adhesion, SOLITEX WELDANO should be wiped clean with a cloth.
Bonding to frozen membranes is not possible.
There must be no water-repellent substances (e.g. grease or silicone) on the membranes. Subsurfaces must be sufficiently dry and stable.

It is recommended that spot checks be performed to test the strength of the stuck joints.

General conditions

SOLITEX WELDANO is to be installed horizontally (parallel to the eave). Unhindered drainage of water must be ensured. Cross joints are to be avoided. If membrane joints are necessary, they should be offset with respect to each other.

To protect the building structure during the construction phase, SOLITEX WELDANO roof lining membranes can be subjected to outdoor exposure for up to 3 months (e.g. as a temporary covering in accordance with ZVDH ('Zentralverband des Deutschen Dachdeckerhandwerks' - National Association of the German Roofing Trade).
The roof pitch must be at least 5°. National regulations should be taken into account here.

Fasteners should not be applied on flat surface areas or in areas where water run-off is collected (e.g. in roof valleys). We recommend the use of corrosion-resistant fasteners.

The membrane edges are to be welded using the WELDANO TURGA system solvent welding agent or a hot air gun. The welding area must be dry and free of frost, dust and grease. If dirt (e.g. oil) is stuck to the surface, moisten a cloth lightly with WELDANO TURGA system solvent welding agent and use it to clean off this dirt. Both sides of the membrane can be welded and are suitable as upper layers.
Welding with a solvent welding agent can be carried out at temperatures above 0 °C / 32 °F. Please observe the hazard notices on the container.

If a hot air gun is being used, we recommend a temperature of around 220 to 280 °C (430 to 530 °F) depending on the ambient temperature and wind conditions. Test this setting by carrying out a test weld on a sample piece of membrane. A 40 mm (1.6") nozzle width has been found to be suitable in practice for welded joints between surface membranes. A 20 mm (.8") nozzle may be more suitable in certain cases for more intricate joints.

The WELDANO ROFLEX pipe grommet is suitable for pipe diameters of 90 mm to 125 mm (3.5"-5") for roof pitches between 5° and 25°.
The WELDANO ROFLEX PLUS pipe grommet is suitable for pipe diameters of 90 mm to 120 mm (4.5"-4.75") for roof pitches up to 50°.

As an alternative to the use of the WELDANO ROFLEX, WELDANO INVEX or WELDANO INCAV system shaped elements, these elements can also be made by cutting appropriate shapes out of SOLITEX WELDANO membranes.

Important: The enclosed counter battens on the waterproof roof lining must be dry and chamfered on their upper side (≥ 3 mm; 120 mils) when they are installed. Ideally, structural timber should be used.

Additional technical information for Germany:
Depending on the requirements demanded of the roof lining when used as an additional measure, the roof lining can be installed to be rainproof or watertight (in accordance with ZVDH). Rainproof roof lining: The counter battens are installed over the roof lining membrane. Waterproof roof lining: The counter battens are integrated into the sealing layer. The roof lining membrane is installed over the counter battens here or else SOLITEX WELDANO-S sealing strips are fitted over the counter battens and welded to the roof lining membrane on both sides.

Ridge ventilation is permitted in the case of a rainproof roof lining. The roof lining membrane should then stop 30 mm (1.2") before the apex of the ridge. Cover the ventilation opening with a membrane strip over the counter batten along the ridge axis. Ridge ventilation is not permitted in the case of a waterproof roof lining.

The SOLITEX WELDANO roof lining membrane is to be bonded in a windproof and waterproof manner at the eave flashing. The eave flashing can be installed as a drip board under the gutter or as a guide board that guides water into the gutters. To protect the roof lining membrane from direct sunlight on a permanent basis, the width of the eave flashing should be selected appropriately depending on the roof pitch and the orientation of the building structure.

SOLITEX WELDANO® cutting and welding service

Seal your roofs tight even more quickly and easily

Do you have a roof structure that is to be installed with a roof lining membrane that is homogeneously welded together?
If so, you no longer need to worry about the joining and cutting of the individual membranes.
For roof areas of 50 m² and greater, pro clima will prepare your SOLITEX WELDANO roof lining membrane for you: in an automated, highly effective manner with reliable seal tightness and at a fair price.
This saves valuable installation time on site and makes you less dependent on weather conditions.
Please simply send us your roof drawing/description by e-mail when submitting your enquiry.
Alongside standard roof shapes such as L-shapes and rectangles, we can also carry out pre-welding for special roof shapes such as those with roof features involving valleys.


  • Faster installation thanks to time savings on the building site
  • Sheets that are cut, welded and delivered specifically for your project
  • Reliable, uniform quality of work thanks to machine-welded seams
  • Less dependency on building site conditions: no welding in the wet, faster protection against weathering
  • Available for roof areas of 50 m² and greater

1. Your roof design

What type of roof is involved?
Gable roof, pitch roof, tented roof, etc.
Please specify the type of roof and provide an outline sketch of the roof with the actual lengths and surface areas.
Please also take into account special structures such as adjacent valleys, etc.

2. Specification of eave length and bargeboard length

Please specify in your drawing the dimensions of the bargeboards and eaves and all dimensions – e.g. valley lengths – to be taken into account in determining the surface area.

3. Specification of ridge position and water run-off direction

Please indicate on your drawing the position of the ridge with a line and the water run-off direction with a direction arrow.

4. Specification of positioning and roll-out direction (longitudinal and perpendicular)

The pre-fabricated sheeting is generally delivered to your building site as a package that is rolled in two directions.
Have you planned a specific roll-out position, direction and sequence?
If so, please mark the positioning point with a cross.
Ideally, you should indicate the sequence of roll-out directions with arrows and sequential numbering (1, 2).

This example provides guidance