Mapei Topcem - Hydraulic Binder for Screeds

£24.78

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Mapei Topcem is a fast-drying hydraulic binder for screeds, allowing tile installation after 24 hours and wood flooring after 4 days. Mixed on site with sand and water, it produces shrinkage-compensated, high-strength screeds for bonded or floating systems. Ideal for time-sensitive flooring projects.

Size

20Kg

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

Fast-Setting Hydraulic Binder for Screeds Ready for Flooring in 24 Hours

Mapei Topcem is a special hydraulic binder formulated for the preparation of fast-drying, shrinkage-compensated screeds. When mixed with aggregate and water on site, Topcem produces screeds that are ready to receive flooring in as little as 24 hours (ceramics) and 4 days (resilient or wood flooring). Ideal for both bonded and unbonded screeds, Topcem is the perfect solution where time-sensitive floor installations are required in residential, commercial, or industrial settings.

Key Features & Benefits

Rapid Drying: Allows ceramic flooring after 24 hours and wood/resilient flooring after 4 days.
Shrinkage-Compensated: Reduces the risk of cracking and ensures dimensional stability.
High Strength: Provides excellent mechanical resistance and surface hardness.
On-Site Mixing: Simple to use with standard screed sand and water.
Flexible Application: Suitable for bonded, unbonded, or floating screeds with insulation or underfloor heating systems.

Product Details

Type: Special hydraulic binder
Form: Grey powder
Packaging: 20kg bags
Mix Ratio: 200–250 kg of Topcem per m³ of aggregate (0–8mm grain size)
Working Time: Approx. 40–60 minutes at 20°C
Foot Traffic: After 12 hours
Flooring Installation: After 24 hours (tiles), 4 days (resilient/wood)
SKU: TOPCEM20

Application Instructions

Substrate Preparation: Ensure the substrate is stable, clean, and free from oil, dust, and loose material.
Mixing: Mix Topcem with clean, damp screed-grade sand (0–8mm) and water using a forced-action mixer.
Apply Screed: Place, level, and compact the screed as per standard screeding practice.
Curing: Protect from rapid drying and cover if exposed to direct sunlight or wind.
Flooring Installation: Tiles may be laid after 24 hours; resilient or wood flooring after 4 days.

Limitations

Do not mix with other binders or cement.
Not suitable for screeds thinner than 35mm unless bonded.
Do not apply at temperatures below +5°C or above +35°C.

Health & Safety

Contains cement – avoid contact with skin and eyes. Use gloves, goggles, and a dust mask. Refer to the Safety Data Sheet (SDS) for full health and handling instructions.