Special Finishes

Architectural and Decorative Coating Specialists

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Strongwall Acrylic Sealer

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An Acrylic Sealer Undercoat especially formulated for use over Polystyrene with excellent adhesion durability, opacity, and self-levelling.  Available in white, but can be tinted on request.


As a sealer for Strongwall or other modified cements, bricks, cement plaster, polystyrene, concrete blocks, fibre cement sheeting, and as an Undercoat on exterior primed timber.  for interior use as a Sealer Undercoat on Gib-board, insulation board and plaster.


On concrete in hot tropical climates, dilute first coat using 50% clean water to ensure penetration adhesion.

other areas we recommend the application of 1 coat followed by the finishing coats.  Apply by brush, roller, conventional or airless spray.  Ready for general use, reduce with water (approximately 15%) to spray.

Dry Time @ 15'C:

Touch Dry 15 minutes - 1 hour
Recoat 3-4 hours

(Temperature must be above 10'C during application and dry time)


2-4m2 per litre over Strongwall, Stucco, etc.

6-10 m2 per litre per coat, depending on surface porosity over other substrates.


4, 10 and 20 litre pails.

Clean Up:


Warranty / Liability

Special Finishes (NZ) Ltd provides all the enclosed information in good faith but without warrantee and is to assist your application. However the use of this product being used is beyond their control. The manufacturers can accept no responsibility whatsoever for any damage or failure arising from its application or use. It is totally the responsibility of the user to insure that the product is suitable for its intended use.