We no longer stock this product - please contact our technical team on 0113 2455450 (option 2) or [email protected] to discuss a suitable alternative.

R.S. Rapidprime is a rapid cure that should be used with compliant RSL products when time is of the essence. It can be used as a primer for a variety of resin floor systems across the Sherwin-Williams range, RSL’s parent company. This is what makes it a great blend of efficient and versatile.

Recommended Uses

• Where a fast turnaround is imperative
• As a primer with all Sherwin-Williams products

Preparation

New Concrete Floors: New concrete must be clean, sound, dry, fully cured and surface laitance removed by vacuum enclosed shot blasting or mechanical grinding. A minimum strength of 25N/mm sq. is required.

Existing Concrete Floors: Remove all dirt, oil, grease, old paint or any other surface contaminants by vacuum enclosed shot blasting, scarifying or mechanical grinding. Fats, oils or greases must be removed by mechanical means and detergent washing and make sure all residue of detergent is washed and removed by rinsing with clean water. Local repairs should be carried out with Resupatch or Resuscreed 45.

Existing Floors (previously coated): All previous coatings and loose floor paints must be removed by mechanical preparation as described in the above section and primed as specified. If the old resin flooring cannot be removed, then please consult our technical team for advice on intercoat adhesion and suitability, as it may not be compatible with the existing floor coating.

R.S. Rapidprime can also be applied to existing coatings and to other cementitious screeds which should be clean and sound with an appropriate mechanical key for adhesion.

Priming

R.S. Rapidprime should only be applied where the relative humidity of a substrate is less than 75% ERH. Where the relative humidity of a substrate exceeds 75% ERH, R.S. Dampshield FH should be specified and selected on the basis of hygrometer readings, in accordance with BS 8203.

The number of coats to be applied is chosen in accordance with the following table:

ERH% Required Coating Thickness
75-85 1coat of R.S.DAMPSHIELD FH at 200 microns per coat
85-92 2coats of R.S.DAMPSHIELD FH at 200 microns per coat
92-97 3coats of R.S.DAMPSHIELD FH at 200 microns per coat

For Further information please refer to recommended individual product data sheets.

Application

The ambient temperatures of the areas should not be allowed to fall below 15°C throughout the application and the curing period, as this could have an adverse effect on the appearance and colour of the system. Surface temperature must be above 10°C. Where possible it is recommended that the application area is heated to a minimum temperature of 15°C to allow the ambient and substrate temperature to stabilise prior to installation.

Pre-mix the base component to a uniform consistency then mix the entire contents of the base with the hardener. If a separate mixing bucket is being used for mixing, ensure all contents of both components are removed from the buckets supplied. Mix using a slow speed electric mixer for approximately one to two minutes until the two components have fully combined.

The mixed unit should be applied immediately by squeegee, roller or brush with a consistent procedure. Floor areas should be cross-rolled to ensure even application and to minimise roller marks. Product should be applied immediately due to short pot life. Any delay will result in loss of working time.

Coverage rates may vary depending on profile and porosity of the substrate.