{"product_id":"muro-san-white-breathable-restoration-plaster-wta-damp-masonry-treatment-25kg","title":"muro san Restoration Plaster WTA - Damp Masonry Treatment (25kg)","description":"\u003cstrong\u003ePremium WTA Certified White Restoration Plaster for Historic Building Preservation\u003c\/strong\u003e\n\n\u003cp\u003emuro san Sanierputz WTA weiß (muro san White Restoration Plaster) is a professional-grade white renovation plaster engineered for treating and preserving moisture-damaged masonry in historic and traditional buildings. This pore-hydrophobic and highly diffusion-capable plaster delivers lasting protection for damp walls while maintaining aesthetic appeal with its clean white finish—ideal for historic facades and interior restoration work.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite Finish:\u003c\/strong\u003e Clean, bright white color suitable for heritage facades and period-appropriate aesthetics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePore-Hydrophobic:\u003c\/strong\u003e Water-resistant surface prevents liquid water penetration while allowing vapor transmission\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly Diffusion-Capable:\u003c\/strong\u003e Exceptional breathability allows trapped moisture to escape naturally from masonry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWTA Certified:\u003c\/strong\u003e Complies with Wärmeschutz-Technische Analyse standards and DIN 18 557 \/ DIN 18 550 Mortar Group P II\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSalt-Resistant:\u003c\/strong\u003e Prevents salt efflorescence and plaster spalling on affected masonry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHistoric Building Grade:\u003c\/strong\u003e Formulated for compatibility with traditional building materials and construction methods\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Workability:\u003c\/strong\u003e Easy application by machine or hand with strong adhesion properties\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady-to-Use:\u003c\/strong\u003e Dry mortar formulation—simply add water to correct consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePermanent plastering of damp, salt-laden masonry on historic buildings\u003c\/li\u003e\n\u003cli\u003eRenovation and restoration of heritage facades and period properties\u003c\/li\u003e\n\u003cli\u003eTreatment of moisture-damaged cellars, vaults, and below-grade spaces\u003c\/li\u003e\n\u003cli\u003ePost-flood remediation and water-damage restoration on traditional buildings\u003c\/li\u003e\n\u003cli\u003eSurface plaster following horizontal damp-proof course installation\u003c\/li\u003e\n\u003cli\u003ePrevention of salt crystal growth and efflorescence on heritage structures\u003c\/li\u003e\n\u003cli\u003eInterior and exterior breathable plaster finish on traditional masonry\u003c\/li\u003e\n\u003cli\u003eConservation-approved restoration work on listed buildings and historic properties\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStandards \u0026amp; Certification:\u003c\/strong\u003e DIN 18 557, DIN 18 550 (Mortar Group P II), WTA approved\u003cbr\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Ready-to-use dry mortar - pore-hydrophobic and diffusion-capable\u003cbr\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Pure white\u003cbr\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e Specially formulated white cement mortar with water-repellent and workability enhancers\u003cbr\u003e\n\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 02040 \/ 02043\u003cbr\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e 25kg sack\u003cbr\u003e\n\u003cstrong\u003eCoverage:\u003c\/strong\u003e Approximately 2-2.5 m² per 25kg bag at 10-12mm thickness (varies with application method and substrate)\u003cbr\u003e\n\u003cstrong\u003eApplication Thickness:\u003c\/strong\u003e First coat 10-15mm; finishing coat 5-10mm\u003cbr\u003e\n\u003cstrong\u003eApplication Temperature:\u003c\/strong\u003e Minimum 5°C; optimal 15-25°C\u003cbr\u003e\n\u003cstrong\u003eDrying Time:\u003c\/strong\u003e Approximately 7-10 days depending on temperature and humidity\u003cbr\u003e\n\u003cstrong\u003eWater Addition:\u003c\/strong\u003e 11-13 liters per 25kg bag (mix to desired consistency)\u003cbr\u003e\n\u003cstrong\u003eVapor Permeability:\u003c\/strong\u003e High diffusion capability - allows water vapor to escape freely\u003cbr\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Store in cool, dry conditions; shelf life 12 months in original sealed packaging\u003c\/p\u003e\n\n\u003ch3\u003eSubstrate Preparation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRemove any loose, flaking, or delaminated plaster and damaged masonry facing\u003c\/li\u003e\n\u003cli\u003eClean masonry surface thoroughly - remove dust, algae, moss, and contaminants\u003c\/li\u003e\n\u003cli\u003eDampen substrate (but not saturated) before application for optimal adhesion\u003c\/li\u003e\n\u003cli\u003eEnsure adequate substrate salinity assessment before treatment begins\u003c\/li\u003e\n\u003cli\u003eFor optimal results, follow WTA guidelines for comprehensive damp treatment strategy\u003c\/li\u003e\n\u003cli\u003eConsider installing horizontal damp-proof course before plaster application for rising damp issues\u003c\/li\u003e\n\u003cli\u003eOn listed buildings, consult conservation officer before commencing work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplication Instructions\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMix Thoroughly:\u003c\/strong\u003e Add 11-13 liters clean water to 25kg bag. Mix with mechanical mixer or by hand until uniform mortar consistency is achieved. Allow 10-15 minutes rest, then remix before application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare Substrate:\u003c\/strong\u003e Clean and dampen masonry surface. Remove any loose material, previous failed plaster coatings, and debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply First Coat:\u003c\/strong\u003e Apply 10-15mm thickness using trowel or spray application. Work systematically in sections, maintaining consistent edge control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCure First Coat:\u003c\/strong\u003e Allow 7-10 days drying between coats depending on temperature, humidity, and substrate porosity. Protect from rain during curing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply Finish Coat:\u003c\/strong\u003e Apply final 5-10mm layer for smooth, uniform white surface finish. Trowel finish or textured as required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection \u0026amp; Finishing:\u003c\/strong\u003e Protect from rain for first 48 hours. Avoid application in frozen conditions or extreme heat. Allow full cure before painting or sealing if required.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSafety \u0026amp; Storage\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eContains white Portland cement - skin and eye irritant. Avoid prolonged contact with skin.\u003c\/li\u003e\n\u003cli\u003eIn case of skin contact, wash thoroughly with water.\u003c\/li\u003e\n\u003cli\u003eIn case of eye contact, rinse immediately with clean water for at least 15 minutes.\u003c\/li\u003e\n\u003cli\u003eWear appropriate PPE: gloves, eye protection, dust mask, and protective clothing during mixing and application.\u003c\/li\u003e\n\u003cli\u003eUse in well-ventilated areas.\u003c\/li\u003e\n\u003cli\u003eStore in cool, dry conditions (15-25°C). Protect from rain and excessive moisture.\u003c\/li\u003e\n\u003cli\u003eKeep in original sealed packaging. Once opened, use contents within reasonable timeframe.\u003c\/li\u003e\n\u003cli\u003eKeep away from children and pets.\u003c\/li\u003e\n\u003cli\u003eRefer to Safety Data Sheet (Merkblatt 02040\/02043) for complete handling information.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose muro san White Restoration Plaster?\u003c\/h3\u003e\n\u003cp\u003emuro san White represents the gold standard in WTA-certified restoration plasters for heritage buildings. Manufactured in Germany to exacting standards, this product is trusted by conservation specialists, historic building contractors, and restoration professionals throughout the UK and Europe. The pure white finish offers heritage-appropriate aesthetics while maintaining the breathable performance essential for traditional masonry preservation. Unlike impermeable modern solutions, muro san White delivers genuine, long-lasting damp protection while allowing walls to dry naturally—preserving the integrity and longevity of historic structures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Germany | WTA Certified | Heritage Grade | Conservation Approved | Historic Building Specialists Recommend\u003c\/strong\u003e\u003c\/p\u003e]]\u0026gt;","brand":"muro Bauprodukte","offers":[{"title":"25kg","offer_id":58773886992716,"sku":"MSWHITE-25KG","price":33.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/0626\/4908\/files\/MuroSan1.jpg?v=1789214266","url":"https:\/\/onestoprender.co.uk\/products\/muro-san-white-breathable-restoration-plaster-wta-damp-masonry-treatment-25kg","provider":"One Stop Render Supplies ltd","version":"1.0","type":"link"}