Seal-it® 520 PRIMER

• Specially developed as a durable adhesion promoter for porous surfaces, such as masonry, stucco, cellular and aerated concrete, natural stone, sand-lime brick, untreated wood, gypsum blocks and other absorbent materials.
• As a waterproof and moisture-proof primer for lasting protection of surfaces from moisture and water loads, to guarantee a strong and lasting bond/adhesion.
• Completely seal porous surfaces off from surface absorption.
• Can be used with sealants and adhesives based on silicone, hybrid polymer and MS-polymer® and polyurethane.

• Forms a highly durable, non-porous membrane to protect from moisture and water loads.
• Stops surface absorption and ensures excellent bonding.
• Secures hard-to-remove dust particles to the bonding surface.
• Easy to apply with a brush or roller.
• Fast-drying, ready-made 1-part primer that retains its transparency.
• Excellent resistance to UV, weather, water, moisture and ageing.
• UN-approved packaging, fitted with safety seal.

• Application temperature (ambient and surface) between +5°C and +35°C.
• Before use, shake and/or mix Seal-it® 520 PRIMER well so it does not form a homogeneous mass.
• Use a hard brush to remove any loose particles from bonding surfaces or other surfaces before applying Seal-it® 520 PRIMER.
• Bonding surfaces and other surfaces must be dry, clean, uncontaminated, grease-free, dust-free, compatible and stable.
• First use Seal-it® 510 CLEANER to degrease/clean greasy or contaminated surfaces properly before applying Seal-it® 520 PRIMER.
• Use a suitable brush or roller to apply Seal-it® 520 PRIMER evenly and not too thickly.
• If the sealant is not applied within the maximum drying time, you must sand off the old coat of primer and then reprime.
• After use, close the canister as quickly as possible, so the Seal-it® 520 PRIMER does not harden.

SI-XXX-XXXX-XXX = Article number.
Other colours and/or packaging on request.