Primer Rollgum  – substrate-strengthening primer for EPDM membrane installation

Primer Rollgum is a high-grade priming agent developed specifically for preparing surfaces before installing self-adhesive EPDM membranes from the Rollgum Fix range. Its purpose is to enhance membrane adhesion to the substrate and to ensure a durable, watertight seal even in demanding weather conditions.

Why use Primer Rollgum?

• Improved adhesion – binds dust and fine particles, creating an ideal base for the membrane.

• Reduced absorbency – prevents the substrate from soaking up adhesive components.

• Faster installation – enables quicker, more reliable application of EPDM membranes.

• Versatile – suitable for concrete, cement screeds, metals and other mineral surfaces.

Applications

• Priming roof, terrace and balcony surfaces before laying Rollgum Fix membrane.

• Preparing horizontal and vertical substrates (walls, foundations).

• Interior and exterior waterproofing work.

Directions for use

1. Ensure the substrate is clean, dry, stable and free of grease.

2. Shake or stir the product vigorously before use.

3. Apply with a brush, roller or spray.

4. Allow to dry completely (drying time depends on weather conditions).

Technical data

• Consistency: liquid

• Colour: dark

• Packaging: 1 L

• Coverage: approx. 200–300 ml/m² (depending on substrate porosity)

• Application temperature: +5 °C to +35 °C

An essential component of an effective waterproofing system with Rollgum Fix membranes—ensuring professional, long-lasting results.