Overview

The Dulux Avista Sealer Stripper is a gel-based stripping compound made to remove both solvent-based and water-based concrete sealers in a single application. The thick gel clings to vertical and horizontal surfaces and penetrates multiple layers of aged sealer, lifting them from the concrete without mechanical grinding.

It is formulated without Methylene Chloride or N-Methyl Pyrrolidone, so it is a safer choice for the applicator and the environment while still delivering professional stripping performance. After the dwell time, the lifted sealer and stripper wash away with water, with no harsh solvent clean-up.

Key Features

• Gel formula that clings to vertical and horizontal surfaces
• Strips solvent-based and water-based acrylic sealers
• Removes multiple layers in a single application
• MC and NMP free, safer for the user
• Water clean-up, no solvent disposal issues
• For interior and exterior concrete surfaces

Specifications

• Pack size: 20L pail
• Coverage: approximately 0.5 m2 per litre, about 10 m2 per pail
• Dwell time: 15 to 20 minutes for water-based, up to 60 minutes for solvent-based
• Removal: stiff-bristled broom or scraper, then water wash
• Chemistry: gel-based, MC and NMP free
• Not for epoxy or polyurethane coatings

Applications

• Stripping failed or aged sealer from driveways
• Removing peeling or flaking coatings before resealing
• Preparing previously sealed concrete for a new system
• Cleaning off poorly applied or oversprayed sealer

What You Need to Complete the Job

Apply a generous, even coat with a roller or brush and let it dwell, then remove the softened sealer with a broom or scraper and wash the surface clean. Once dry, reseal with a Dulux Avista concrete sealer such as the General Purpose Matt or Semi-Gloss. For mild haze rather than failed sealer, try the Solvent Based Rejuvenator first. Sealers are in the Concrete Sealers range.

Frequently Asked Questions

How do I know if my sealer needs stripping or just a maintenance coat?

If the sealer is peeling, flaking or has turned white and chalky, strip it before resealing. If it is only dull or has lost its water beading but is still sound, a clean and a maintenance coat may be enough. A quick tape test can help: press strong tape to the surface and pull sharply, if sealer comes away, stripping is needed.

Will the stripper damage the concrete?

The product is formulated to target the sealer, not the concrete. It will not etch or damage properly cured concrete when used as directed. Protect surrounding painted surfaces, metal fixtures, timber and landscaping from splashes and runoff, and test on an inconspicuous area first.

Can I use this on epoxy or polyurethane coatings?

No. The stripper is designed for acrylic sealers, both solvent and water based. Epoxy and polyurethane are chemically cross-linked and resist chemical stripping, so mechanical preparation such as grinding or shot blasting is the effective removal method for those coatings.

How long must I wait before applying a new sealer?

Allow the concrete to dry completely, a minimum of 24 to 48 hours in warm, dry conditions and longer in cool or humid weather. Rinse thoroughly to remove all stripper residue, because any remaining chemical will interfere with the adhesion of the new sealer.