Elastoflex Rooflight Coating

Elastoflex Rooflight Coating forms part of the Elastoflex Waterproofing System and is used for the waterproofing of surfaces which are required to maintain a level of natural daylight, eg in-line rooflights. The Elastoflex Rooflight Coating allows continuation of the Elastoflex Waterproofing System across these transparent areas.

Elastoflex Rooflight Coating is a single component, highly modified transparent polyurethane resin that is applied in three thin coats. Once cured the membrane is UV and weather resistant, it also demonstrates high elasticity and abrasion resistance.

Product Range

Product Code Description Size
3006234 Elastoflex Rooflight Coating 5kg tin



Performance Data:
Container size: 5kg
Form: Liquid
Colour: Translucent
Coverage Rate: 1.2 kg/m² (3 x 0.4 kg/m²)
Coverage per Container: Approx 4.1 m²
Workability period: 25 minutes1
Rainproof after: Approx 15 minutes1
Complete Cure: Approx 3 − 7 days1
Shelf Life: 9 months

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. 

Application Conditions

Apply only when atmospheric and substrate temperatures are greater than 5 °C and 3 °C above the dew point. If the surface is below or at dew point temperature then moisture can form at the surface and affect coating adhesion and curing.

Surface Preparation

Ensure surfaces are clean and free from contaminants. Glass surfaces should be degreased before application. Rooflights should be pressure washed or hand washed with a citrusbased cleaner, then a thorough rinse so that the panels are ‘‘squeaky clean’’ and dry.

Application Method

Once opened stir the contents carefully, without adding air bubbles. To achieve uniform coverage, roll the liquid to the prepared substrate using a roller (eg. mohair roller).

For best results, apply the coating in three thin coats, allowing each coat time to cure between applications.

Personal Protective Equipment (PPE) should be worn.

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