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Improves adhesive strength
Apply butyl primer to the surface being treated with a brush and let the surface flash off until the primer stiffens and exhibits a strong surface adhesiveness.
The usage instructions are recommendations based on the tests we have conducted and are based on our experience; carry out your own tests before each application. Due to the large number of applications and storage and processing conditions, we do not assume any liability for a specific application result. Insofar as our free customer service provides technical information or acts as an advisory service, no responsibility is assumed by this service except where the advice or information given falls within the scope of our specified, contractually agreed service or the advisor was acting deliberately. We guarantee consistent quality of our products. We reserve the right to make technical changes and further develop products.
Butyl primer is always required to ensure optimum adhesion on porous and absorbent surfaces. To improve adhesive strength on oxidising metals such as iron, lead etc., these surfaces too must always be treated with pre-primer. For other surface materials, the adhesive strength can be increased by using the primer.
Butyl primer is required for all self-adhesive Würth butyl and bitumen tapes:
Butyl primer must be used on:
Concrete, aerated concrete, bitumen, lead, iron, fibre cement, natural stone/artificial stone.
Adhesive strength can be optimised with butyl primer:
Acrylic glass, acrylic paint, alkyd resin lacquer, bare aluminium, anodised aluminium, chlorine rubber varnish, chrome, DD varnish, dispersion window varnish, dispersion façade paint, stainless steel (V2A) (V4A), enamel, epoxy enamel, glazed and unglazed tiles, glass, copper, scumbling coat, marble, melamine resin (Resopol), brass, polycarbonate, polyester (GFRP), hard PVC, untreated and galvanised steel, polystyrene, zinc plating, zinc dust paint.
The surface to be primed must be dry, load-bearing and free from dust and release agents. Apply the primer evenly (apply a thicker coat to porous surface materials).
Solvent-containing synthetic natural rubber
0.75 g/cm³ / at 20°C, DIN 51757
Min./max. application quantity in volume/area /conditions
150-250 ml/m² / depending on the absorbency of the surface
Min. flash-off time
Min./max. processing temperature
5 to 30 °C
Shelf life from production/conditions
12 Month / cool and dry storage area, in sealed original container
Select RAL-colour code
!! NOTE: On-screen visualisation of the colour differs from real colour shade!!