Description
Mapei Topcem Pronto Ready Mixed Mortar
– 20kg Bag
Ready-to-use, normal-setting, controlled-shrinkage mortar with high thermal efficiency for quick-drying (4 days) screeds.
WHERE TO USE:
- For forming bonded, unbonded, and floating screeds on new and existing slabs in interiors and exteriors prior to
installing wood, PVC, linoleum, ceramic tile, natural stone, carpet or other floor coverings in areas where fast drying screeds are required in order to lay floorings in a short time.
APPLICATION EXAMPLES:
- Forming screeds that are trafficable in 12 hours and completely dry in 4 days, for installing wood parquet and resilient flooring such as rubber, PVC, linoleum, etc.
- Screeds that are ready to receive ceramic tiles after 24 hours and natural stone flooring after 2 days.
- Waterproofng with a Mapei waterproofng membrane after 2 days.
- Repairing screeds in areas where it is required to lay floorings in a short time (e.g. supermarkets, shops, residences, offices, etc.).
- Forming heated screeds without the need for plasticizers.
TECHNICAL CHARACTERISTICS:
- Topcem ProntoAU is a pre-blended ready-to-use mortar with normal setting and controlled shrinkage based on a special hydraulic binder and graded aggregates.
- Topcem Pronto AU is extremely easy to use: just mix with water. This prevents mistakes from being made in adding the correct amount of binder and properly graded aggregate, which could compromise the final performance characteristics of the screed when cured.
- Topcem Pronto AU is the ideal solution where good quality graded aggregate is hard to find or for job sites such as those in city centres where the logistics involved in mixing conventional binders can be difficult.
- Topcem ProntoAU is workable for the same length of time as conventional cement based mortars but cures much faster.
RECOMMENDATIONS:
- For ceramic and stone installations, in the case of rising damp, provide a suitable waterproofng membrane.
- For resilient installations, relative humidity and pH level readings must be carried out on the concrete substrate in accordance with AS 1884. If required, a moisture vapour barrier (such as Primer MF or Mapeproof 1K Turbo) should be applied above the screed.
- Do not mix Topcem ProntoAU with other binders (e.g. Mapecem, Topcem, cement, lime, gypsum, etc.) or aggregates.
- Mix Topcem Pronto AU with the correct amount of water.
- It is recommended to incorporate saw cuts to one third of the depth of the screed thickness when installing large bay sizes.
- Do not add water to Topcem ProntoAU mix once it has begun to set.
- Do not wet the surface of Topcem ProntoAU screed.
APPLICATION PROCEDURE:
Preparing the Substrate
- For an unbonded or floating application, all substrates are generally suitable for receiving a Topcem ProntoAU screed. Isolate the substrate with a sheet of polyethylene or similar material.
- For bonded screeds, the substrate must be dry, without cracks, free of dust and loose particles, varnish, wax, oil, and gypsum residues.
- Existing joints in the substrate must be carried through the screed.
Preparing the Mix
Topcem Pronto AU can be mixed in:
- rotating mixers;
- normal job site mixers;
- centrifugal mixers;
- truck mixers;
- automatic pressure pumps.
Mix one 20 kg bag of Topcem ProntoAU with 1.2 litres of clean water for at least five minutes. Never vary the amount of water because this will weaken the mortar’s final performance.
The mix should have a semi-dry consistency.
Tamp and float the mix until a dense, smooth surface is obtained without bleeding.
TECHNICAL DATA:
- Consumption: 18-20 kg/m² per cm of thickness, depending on compaction.
- Cleaning: Clean tools with water.
- Packaging: 20 kg bags.
- Storage: Topcem ProntoAU is stable for at least 12 months when stored in a dry, elevated area.
- Mixing ratio: 1 20 kg bags of TOPCEM PRONTO with 1.2 litres of water.
- Workability time: 60 minutes.
- Set to light foot traffic: after 12 hours.
- Waiting time before application of levelling compounds: 1 to 4 days depending on the type of flooring to be laid.
- EMICODE: EC1 Plus – very low emission
