Corrosion-Inhibiting One-Component Primer for Steel Reinforcement Protection
Mapei Mapefer 1K is a one-component, ready-to-use, anti-corrosion cementitious coating specifically designed for protecting reinforcing steel in concrete repair applications. It forms a durable, flexible barrier against aggressive environmental agents such as chlorides and carbon dioxide, and ensures excellent adhesion between steel and repair mortars. Mapefer 1K complies with EN 1504-7 standards for corrosion protection and is an essential part of long-term concrete remediation systems.
Key Features & Benefits
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Corrosion Protection: Provides a strong barrier against water, chlorides, carbon dioxide, and sulphates.
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EN 1504-7 Certified: Meets European standards for steel reinforcement corrosion protection.
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Excellent Bonding: Promotes adhesion between treated steel and Mapei repair mortars.
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Ready-to-Use: One-component formula for easy mixing and site application.
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Flexible & Crack-Resistant: Remains bonded during steel expansion and contraction cycles.
Product Details
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Type: Cementitious, polymer-modified, anti-corrosion coating
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Form: Grey powder, mixed with water
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Application Method: Brush or spray
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Packaging: 5kg buckets
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Mix Ratio: Approx. 0.17–0.18L water per kg of powder
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Pot Life: Approx. 1 hour at +20°C
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Application Thickness: Two coats, total approx. 2 mm
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SKU: MAPEFER1K5
Application Instructions
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Steel Prep: Mechanically remove all rust, scale, grease, and contaminants from reinforcement bars (minimum to SA 2½).
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Mixing: Slowly add Mapefer 1K powder to water and mix until a smooth, lump-free paste is formed.
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First Coat: Apply the first coat by brush and allow it to dry for at least 2 hours.
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Second Coat: Apply the second coat in the opposite direction. Allow full drying before applying repair mortar.
Limitations
- Do not apply below +5°C or above +35°C ambient temperature.
- Not suitable as a standalone structural repair product — use in combination with Mapei mortars.
Health & Safety
Contains cement — may cause irritation. Avoid skin and eye contact. Wear gloves, goggles, and a dust mask. Refer to the Safety Data Sheet (SDS) for full handling guidance.