Mapei Mapefer 1K - Corrosion-Inhibiting Primer

£74.27

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Mapei Mapefer 1K is a one-component, anti-corrosion cementitious primer for protecting steel reinforcement before concrete repair. It forms a barrier against chlorides and CO₂, ensuring strong adhesion with Mapei mortars. EN 1504-7 compliant, easy to apply by brush in two coats.

Size

4 x 5Kg

Product variants

Delivery and Shipping

Place your order before 3pm for next working day delivery.

Please note: Additional delivery charges may apply for Northern Ireland, Isle of Wight, Isle of Man, Isles of Scilly, Scottish Highlands & Islands, and Channel Islands. We will contact you to inform you of any additional costs once your order is received, or you can call us on 0800 111 4898 beforehand to confirm.

Description

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

Corrosion Protection: Provides a strong barrier against water, chlorides, carbon dioxide, and sulphates.
EN 1504-7 Certified: Meets European standards for steel reinforcement corrosion protection.
Excellent Bonding: Promotes adhesion between treated steel and Mapei repair mortars.
Ready-to-Use: One-component formula for easy mixing and site application.
Flexible & Crack-Resistant: Remains bonded during steel expansion and contraction cycles.

Product Details

Type: Cementitious, polymer-modified, anti-corrosion coating
Form: Grey powder, mixed with water
Application Method: Brush or spray
Packaging: 5kg buckets
Mix Ratio: Approx. 0.17–0.18L water per kg of powder
Pot Life: Approx. 1 hour at +20°C
Application Thickness: Two coats, total approx. 2 mm
SKU: MAPEFER1K5

Application Instructions

Steel Prep: Mechanically remove all rust, scale, grease, and contaminants from reinforcement bars (minimum to SA 2½).
Mixing: Slowly add Mapefer 1K powder to water and mix until a smooth, lump-free paste is formed.
First Coat: Apply the first coat by brush and allow it to dry for at least 2 hours.
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.