{"title":"Primer paint","description":"\u003cp\u003eSkipping the primer doesn’t speed up the work — it only postpones the problem. Applying topcoat paint without a primer causes a range of issues: uneven absorption, patchy coverage, stain bleed-through, and premature wear. The primer prevents these problems — and its cost is significantly lower than that of the topcoat paint.\u003c\/p\u003e\n\u003ch3\u003eWhat is the purpose of primer paint?\u003c\/h3\u003e\n\u003cp\u003ePrimer paint is not a covering layer — it bonds the substrate and the topcoat paint, creating the conditions for an even application. Its functions can be divided into four main groups:\u003c\/p\u003e\n\u003cp\u003eAbsorption-regulating primer: on highly absorbent substrates (porous plaster, aerated concrete, fresh gypsum), it ensures even absorption. Without primer, the topcoat paint dries into the absorbent areas and loses coverage, while forming a surface layer on less absorbent parts — resulting in patchiness.\u003c\/p\u003e\n\u003cp\u003eAdhesion-enhancing primer: on smooth, non-absorbent surfaces (old paint layers, polished concrete, gypsum), it improves the adhesion of the topcoat paint. Where the surface \"has no grip,\" the primer provides micro-roughness and a chemically bonding surface.\u003c\/p\u003e\n\u003cp\u003eStain-blocking primer: on surfaces stained with nicotine, soot, coal tar, or water marks, it prevents bleed-through. This special pigment-containing primer locks in the stain and allows the topcoat paint to cover evenly.\u003c\/p\u003e\n\u003cp\u003eBreathable primer: for breathable wall systems where silicate or lime paint is applied, a compatible mineral primer ensures that the primer does not seal the wall.\u003c\/p\u003e\n\u003ch3\u003eWhen should each primer be used?\u003c\/h3\u003e\n\u003cp\u003eThe function determines the material — this is the most common source of error in primer selection: absorption-regulating primers do not block stains, and stain-blocking primers do not necessarily improve adhesion on smooth surfaces. Always decide based on the specific problem and substrate type.\u003c\/p\u003e\n\u003cp\u003eImportant: chemical compatibility between primer and topcoat paint is required. Use a silicate-compatible primer under silicate topcoat paint — a dispersion primer prevents chemical bonding and negates the benefits of silicate paint.\u003c\/p\u003e\n\u003ch3\u003eHow should primer be applied?\u003c\/h3\u003e\n\u003cp\u003ePrimer should be applied with a roller or brush, followed by the topcoat paint after the drying time has elapsed. Do not shorten the drying time: the primer’s function occurs during drying, and applying the topcoat paint too soon suppresses the primer’s effect.\u003c\/p\u003e\n\u003cp\u003eAfter applying primer, the surface may look different from the dry substrate — this is not a defect but a sign of absorption regulation.\u003c\/p\u003e\n\u003cp\u003eBrowse our primer paints or request advice to select the right primer for your topcoat paint and substrate type.\u003c\/p\u003e","products":[{"product_id":"kerakoll-keradecor-sintcrom","title":"Kerakoll Keradecor Sintcrom rust-resistant corrosion-inhibiting primer paint","description":"\u003cp\u003eMineral organic rust-resistant and corrosion-protective eco-compatible paint, ideal for GreenBuilding. Protects users' health.\u003c\/p\u003e\n\u003cp\u003eKerakoll Keradecor Sintcrom with synthetic resin dissolved in solvent and active pigments, providing outstanding protection. Suitable as a primer for iron and alloys. For indoor and outdoor use.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePackaging\u003c\/th\u003e\n\u003ctd\u003e2.5 ℓ ‑ 0.5 ℓ box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial requirement\u003c\/th\u003e\n\u003ctd\u003e≈ 0.15 – 0.2 ℓ \/m\u003csup\u003e2\u003c\/sup\u003e two layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Kerakoll","offers":[{"title":"Normal \/ 0.5 L (3 m²)","offer_id":43323687633154,"sku":"23365","price":5700.0,"currency_code":"HUF","in_stock":true},{"title":"Normal \/ 2.5 L (14 m²)","offer_id":43323687600386,"sku":"23363","price":21500.0,"currency_code":"HUF","in_stock":true},{"title":"Expired (-50%) \/ 0.5 L (3 m²)","offer_id":54908001878340,"sku":"23365-exp","price":2850.0,"currency_code":"HUF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/8027\/4946\/files\/kerakoll-keradecor-sintcrom-lakkok-es-festekek-37261149602050.jpg?v=1702740616"},{"product_id":"kerakoll-keradecor-zinkover","title":"Kerakoll Keradecor Zinkover primer lacquer for galvanized surfaces","description":"\u003cp\u003eEco-compatible primer and cover enamel paint resistant to environmental effects, with excellent coverage and applicability, ideal for GreenBuilding. The following primers and topcoats, resistant to environmental effects, with excellent coverage and applicability are suitable.\u003c\/p\u003e\n\n\u003cp\u003e Kerakoll Keradecor Zinkover is based on a synthetic resin dissolved in a solvent and provides excellent protection, suitable for the preparation and painting of galvanized surfaces. Significant protection against weather factors and sea air. Indoors and outdoors.\u003c\/p\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Wrapping\u003c\/th\u003e\n\n\u003ctd\u003e 2.5 ℓ - 0.75 ℓ can\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Material requirement\u003c\/th\u003e\n\n\u003ctd\u003e ≈ 0.1 – 0.15 ℓ \/m \u003csup\u003e2\u003c\/sup\u003e for two layers\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e","brand":"Kerakoll","offers":[{"title":"0.75 L (6 m²)","offer_id":43323685994754,"sku":"23357","price":19200.0,"currency_code":"HUF","in_stock":true},{"title":"2.5 L (20 m²)","offer_id":43323685961986,"sku":"23356","price":56850.0,"currency_code":"HUF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/8027\/4946\/files\/kerakoll-keradecor-zinkover-lakkok-es-festekek-37261161890050.jpg?v=1702740437"}],"url":"https:\/\/www.masterworks.hu\/en\/collections\/festekek-alapozo-festek.oembed","provider":"Masterworks Hungary","version":"1.0","type":"link"}