MAPEI Topcem Pronto normal-setting ready-mixed screed mortar 25kg

MAPEI Topcem Pronto 25 kg – normal-setting, fast-drying ready-mixed screed mortar

Topcem Pronto is a ready-to-use class CT-C30-F6-A1 screed mortar with normal setting time and fast drying properties. Thanks to its long pot life of approx. 60 minutes, it is easy to install – and yet it is ready for tiling after just 24 hours.

With a thermal conductivity of λ = 2 W/mK, Topcem Pronto is very well suited for screeds with underfloor heating.

Scope of delivery: 25 kg bag.

Advantages of Topcem Pronto

• Ready to use – just add water
• Long pot life (approx. 60 minutes)
• Fast drying: ready for ceramic tiles after 24 hours
• Good thermal conductivity (λ = 2 W/mK) for underfloor heating
• Classified as CT-C30-F6-A1 according to EN 13813
• Non-flammable (A1)

Typical areas of application

• Bonded screeds and floating screeds
• Heated screeds with underfloor heating
• Screeds before laying tiles, natural stone, parquet, and resilient flooring
• New builds and renovations with tight timeframes

Technical data

• Classification: CT-C30-F6-A1 according to EN 13813
• Mixing water: approx. 1.7 l per 25 kg bag
• Pot life: approx. 60 minutes
• Walkable: after approx. 12 hours
• Ready for ceramic tiles: after approx. 24 hours
• Ready for natural stone: after approx. 2 days
• Ready for parquet / resilient flooring: after approx. 4 days
• Start-up of underfloor heating: after approx. 4 days
• Layer thickness: floating 35–60 mm, bonded 10–40 mm
• Thermal conductivity: λ = 2 W/mK

Consumption

Consumption is approx. 18–20 kg/m² per cm of layer thickness. For a 5 cm thick screed over 10 m², you will need approx. 900–1,000 kg – which is 36–40 bags or approx. one pallet.

Processing of Topcem Pronto

1. Preparing the substrate

For bonded screeds, the substrate must be load-bearing, clean, and free of dust and release agents, and must be treated with a bonding primer. For floating screeds, lay a separating layer or insulation and attach edge insulation strips such as MAPEI Mapestrip Perimeter.

2. Mixing

Mix Topcem Pronto with approx. 1.7 l of water per bag in a forced-action mixer or screed mixer until it reaches an earth-damp consistency.

3. Installation and compaction

Apply the mortar, compact it thoroughly, level it off with a straightedge, and then finish it with a wooden float or power trowel.

4. Covering

Walkable after approx. 12 hours. Lay ceramic tiles after approx. 24 hours, e.g., using MAPEI Keraflex Extra S1; natural stone after approx. 2 days, and parquet and resilient flooring after approx. 4 days.

We provide free delivery within Austria for orders of a full pallet of MAPEI Topcem Pronto or more of the same product.

Note: All information is sourced from the technical data sheet provided by the manufacturer, MAPEI. Please consult the current product and safety data sheet before processing, which can be downloaded at the bottom of this page.