Enviroflex System Components and Accessories

Sealoflex Ultima Bitumen Primer

Sealoflex Ultima Bitumen Primer is a single component, water-based acrylic primer. It is a component of the Sealoflex Ultima System, used to promote the adhesion of Sealoflex Ultima waterproof coating onto Bitumen and asphalt based substrates. The product can also be used to prevent oils and other substrates from attacking the waterproof coating.



Product Range

Product Code Description Size
3101025 Sealoflex Ultima Bitumen Primer 4 Litre
3101024 Sealoflex Ultima Bitumen Primer 20 Litre


Product Data and Performance

Performance Data:
Pack Size: 4 litre and 20 litre
Form: Liquid
Standard Colour: Blue
Consumption: Approx 0.3 L/m-2*
Coverage per Pack: 4 L : 13 m²*
20 L : 66 m²*
Workability period: 60 minutes1
Rainproof after: Approx 45 minutes1
Can be walked on after: Approx 1 hour1
Overcoating period: Approx 1 hour1
Shelf life: 12 months

* Coverage rate is a guideline only. Coverage can vary dependent upon substrate and environmental conditions

1. Dependant on environmental conditions. Values attained at 23 °C and 50% rel humidity. Times given are reduced with higher (and increased with lower) surrounding and work surface temperatures.

Surface Preparation

Before applying Sealoflex Ultima Bitumen Primer ensure that the surface is clean, dry and sound. The surface temperature must be above 5 °C and 3 °C above the dew point. Please refer to the Dew Point Calculation Table in the Sealoflex Ultima Installation Manual. Do not apply if rain is imminent.

Application Instructions

1. Remove the lid of the container and stir product with a mixing stick or a mechanical mixer at low speed until it has reached an even consistency.

2. Apply products to the substrate using a roller or a brush (product may also be spray applied)

3. The minimum consumption is 0.3 litre m², this may increase depending on the texture of the surface.

4. Allow primer to dry thoroughly before applying Sealoflex Ultima Waterproof Coating


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