APPLICATION
Gluing
The materials should be clean and free of dust and grease. Loose parts should be removed and the surface should be coated with a primer if necessary. For renovation and especially ballasted roofs, make sure the bonding surface is firmly attached to the substructure. Shake at least 20 seconds with the can upside down to ensure proper mixing of the ingredients and maximum yield.
• Thread the can tightly to the Applicator Gun.
• Adjust extrusion rate to allow for 30mm beads using the setting screw at the end of the applicator gun.
• Apply directly onto the surface, holding the gun at an angle of about 90° to the surface and ensure a distance of about 1 to 2 cm between nozzle and surface. The nozzle should not be in direct contact with the surface.
It is recommended that at least 4 beads/m (30mm diameter) should be applied (80 to 100 g/m²). On the corners and the edges of the roof, at least 8 beads are recommended. The correct number of beads (and thus the usage of adhesive) can be calculated according to EN 1991-1-4. The region, the roof area, the location and structure height and also the location on the roof (middle, corners or edges) are factors that have to be taken into account.
• On uneven surfaces (for example old bituminous roofing felts), more adhesive (thicker beads up to 50mm) needs to be applied in order to make sure that there is at least 40% adhesive transfer between surface and insulation panel.
• Maximum allowed unevenness underneath an insulation board is 1cm.
In the case of steel deck, the adhesive is applied in beads on the top (upper side) of the steel deck. In case that a vapor barrier is present on the steel deck, the adhesive should still be applied on the top (upper side) of the steel deck in beads and not in e.g. a zigzag pattern between the tops. After extrusion, the panels need to be pressed down in the adhesive beads within the open
time of 8 minutes. Then do not walk on the applied insulation panels for about 1 hour.
• It’s recommended to shake the can after each work interruption. Do not hammer on the boards
• When the boards are pulled back or displaced (and the adhesive layer is broken), it’s necessary to apply extra adhesive to get a good bond.
The installer should make sure that the adhesive is fully cured before applying the roofing membrane to the insulation board, minimize walking over the boards during the first hour (especially on uneven surfaces). Cured adhesive should be removed mechanically.
Filling
Shake at least 20 seconds with the can upside down to ensure proper mixing of the ingredients and maximum yield. Thread the can tightly to the Applicator Gun. It’s recommended to shake the can after each work interruption. When the product is applied in multiple layers, moisten the surface between each layer. If not yet cured, use Soudal Gun and Foam Cleaner for cleaning. Cured adhesive should be removed mechanically.
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