{"title":"Facade Cleaning","description":"\u003cp\u003eDiscoloration, algae, moss, soot, and rust stains appearing on the facade are not just aesthetic issues: the biological coating produces organic acids that gradually degrade the plaster and stone surfaces. Cleaning is the first step in preservation — but using the wrong material for cleaning can cause more damage than it repairs.\u003c\/p\u003e\n\u003ch3\u003eWhat are the most common types of facade contamination?\u003c\/h3\u003e\n\u003cp\u003eBiological coating (algae, moss, fungi, lichens): Found on damp, shaded facades, especially on north-facing walls and near water. It appears as greenish, blackish, or grayish discoloration.\u003c\/p\u003e\n\u003cp\u003eEfflorescence: A white, powdery crystalline coating brought to the surface by capillary moisture rising through the wall. It can appear on both brick and plaster.\u003c\/p\u003e\n\u003cp\u003eSoot and atmospheric pollution: In urban environments, pollutants deposited from the air cause gray or brown discoloration.\u003c\/p\u003e\n\u003cp\u003eRust stains: Corrosion products from steel fittings, railings, screws, and hardware that penetrate stone and plaster, leaving orange-brown stains.\u003c\/p\u003e\n\u003cp\u003eCement residue and lime splashes: Construction-related contaminants that can be removed with acidic cleaners.\u003c\/p\u003e\n\u003ch3\u003eWhich cleaner is suitable for which facade?\u003c\/h3\u003e\n\u003cp\u003eAgainst biological coatings: Biocide-containing, neutral or mildly alkaline facade cleaner. The dead parts of the coating should be removed with pressure or a brush, then the surface treated to prevent re-colonization.\u003c\/p\u003e\n\u003cp\u003eAgainst efflorescence and cement residue: Mildly acidic cleaner — but forbidden on acid-sensitive stone (limestone, marble). Always start with a test patch.\u003c\/p\u003e\n\u003cp\u003eAgainst rust stains: Special rust remover that chemically dissolves iron phosphate crystals without damaging the substrate.\u003c\/p\u003e\n\u003cp\u003eAgainst atmospheric pollution: Neutral or mildly alkaline general facade cleaner.\u003c\/p\u003e\n\u003cp\u003eBrowse our facade cleaners or request advice to select the right cleaner for the type of contamination and facade material.\u003c\/p\u003e","products":[{"product_id":"kerakoll-kerakover-activ","title":"Kerakoll Kerakover Activ","description":"\u003cp\u003e Eco‑compatible water-based ready-to-use disinfectant, ideal for GreenBuilding. It has a low solvent content, is environmentally friendly and protects the health of users.\u003c\/p\u003e\n\n\u003cp\u003e Kerakoll Kerakover Activ is an active agent against biological pests, suitable for the restoration of surfaces contaminated with mold, algae, fungus and moss. 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 10 ℓ \/ 5 ℓ \/ 1 ℓ jug\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\u003etwo layers of fine-grained plaster base ≈ 0.2 – 0.3 ℓ\/m \u003csup\u003e2\u003c\/sup\u003e\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Storage\u003c\/th\u003e\n\n\u003ctd\u003e ≈ 18 months\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":"1 L","offer_id":42749109108994,"sku":"23345","price":10900.0,"currency_code":"HUF","in_stock":true},{"title":"5L","offer_id":42749109141762,"sku":"20014","price":50800.0,"currency_code":"HUF","in_stock":true},{"title":"10L","offer_id":42749109174530,"sku":"20015","price":95700.0,"currency_code":"HUF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/8027\/4946\/files\/kerakoll-kerakover-activ-impregnaloszerek-37256389951746.jpg?v=1702740255"}],"url":"https:\/\/www.masterworks.hu\/en\/collections\/tisztitok-homlokzattisztitas.oembed","provider":"Masterworks Hungary","version":"1.0","type":"link"}