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SaleExtreme Clear Polyurethane Concrete Primer and Sealer
Regular price From £49.99 (inc VAT)Unit price /UnavailableIn stock -
SaleExtreme Seal Concrete Dustproofer / Floor Primer & Sealer
Regular price From £44.99 (inc VAT)Unit price /UnavailableIn stock
Need help choosing?
Tell us the surface, existing finish and intended use so we can help you check product suitability.
Concrete Floor Primers and Sealers
A concrete floor primer is a first coat that prepares bare or porous concrete and controls absorption before a topcoat. Each primer and sealer here has its own role, and none of them corrects damp, loose concrete or structural defects.
Compare each primer and sealer
A primer sealer can act as a first coat, a dustproofer or both, depending on the product. Compare Clear Polyurethane Concrete Primer & Sealer with Concrete Dustproofer / Floor Primer & Sealer, and check the selected product's role before applying a topcoat. Clear Polyurethane Concrete Primer & Sealer is required under Extreme Polyurethane Floor Paint on bare, porous or mechanically ground concrete.
Read the concrete floor preparation guide, then compare our floor coatings and Extreme Polyurethane Floor Paint.
Before you apply
A primer is not compatible with every paint or existing finish, so confirm the system first. New concrete must meet the selected system's curing and moisture requirements, and the surface must be free of contamination.
Frequently Asked Questions
What is a floor primer for concrete?
What is a floor primer for concrete?
It is a first coat that prepares the surface and controls absorption where the coating system specifies it. A dustproofer or sealer may have a different role, so check the product's description.
When should I use a primer on concrete?
When should I use a primer on concrete?
When the topcoat's instructions call for one — typically on bare or porous concrete. New concrete must first meet the system's curing and moisture requirements.
Can a concrete primer go over old paint?
Can a concrete primer go over old paint?
Yes, where it is compatible with a sound existing coating. Remove contamination and loose material first, and ask us for confirmation if you don't know what the old finish is.
Can a floor sealer be used outdoors?
Can a floor sealer be used outdoors?
Only where the exact product states exterior use and topcoat compatibility — not every primer or sealer suits outdoor exposure or persistent moisture.
Can I apply a concrete primer myself?
Can I apply a concrete primer myself?
Yes — follow the product's method, protective equipment and ventilation guidance. Prepare the concrete first, and seek specialist advice for damp, weak or contaminated surfaces.
Does a primer make floor paint last longer?
Does a primer make floor paint last longer?
A compatible primer supports adhesion and controls absorption where specified, which helps the topcoat perform as intended. It does not make up for moisture, unsuitable surfaces or poor preparation.
