FLEX-PRIMER is a polymer emulsion with high penetrating ability used to consolidate porous substrates, ensuring proper adhesion of water-based paints, tile adhesives, flexible mortars, liquid-applied elastomeric membranes, acrylic renders, etc.
By penetrating deep into the substrate pores, it acts as a bonding layer between the substrate and the paint, adhesive, mortar, coating, etc. to be applied. Has achieved the Eurofins Indoor Air Comfort GOLD certification, which sets the stringent criteria for very low emissions of volatile organic compounds (VOCs) and contributes to good indoor air quality, ensuring a safe and healthy living environment. Classified A+ ( the highest rating), according to the French VOC regulation, for evaluationof VOC emissions. FLEX-PRIMER has received an Environmental Product Declaration (EPD) following an assessment of its life-cycle environmental impacts.
Ideal for use in combination with the premium elastic waterproofing paint ISOMAT FLEXCOAT, forming an ideal waterproofing system for walls. Used as a ready-to-use primer to ensure the adhesion of water-based paints and acrylic renders to porous substrates made of concrete, masonry, render, gypsum boards, chipboards, etc. It can consolidate weak or crumbling renders. Also used to stabilize and reduce the water absorption of surfaces like gypsum boards or chipboards to be covered with tile adhesives, the two-component, highly flexible, waterproofing cement-based slurry AQUAMAT-ELASTIC, or the elastomeric liquid membrane for waterproofing under tiles ISOMAT SL-17. Suitable for indoor and outdoor applications.

Substrate preparation
The surface to be primed must be dry and free of dust, grease, dirt, etc.

Application
FLEX-PRIMER is thoroughly stirred and uniformly applied over the  substrate by brush, roller, or spray prior to painting.