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Mapei Mapecem

Model: 118120
Brand: MAPEI

Product Details

Mapei Mapecem


Preparation of both floating and bonded screeds on existing and new slabs for the installation of wood, PVC, linoleum, ceramic tiles, carpeting or any other flooring where fast-drying is required for minimum downtime. Some application examples

  • Preparation of screeds set to light foot traffic after 2-3 hours and perfectly dry after 24 hours, for the installation of parquet and resilient flooring.
  • Preparation of screeds ready to receive ceramic tiles and natural stone after only 3-4 hours.
  • Patching and repairing screeds in areas subject to continuous traffic (supermarkets, hospital, airports, etc.).
  • Preparation of screeds incorporating underfloor heating systems.


Mapecem is a special hydraulic binder, which, when mixed with graded aggregates and water, has the extraordinary capacity to harden in just a few hours and to dry perfectly at whatever thickness within 24 hours (residual moisture less than 2% by weight). Because of these characteristics and the very high mechanical strength, Mapecem is the ideal binder for screeds onto which resilient, textile, wood, ceramic or stone floorings must be installed within 24 hours only. [sche1] 201 Inglese (MAPECEM) (31.05.2005 - 3ª Bozza/Ciano Digitale/Pell.)


  • Do not use Mapecem on substrates subject to rising damp (lay a waterproofing membrane first).
  • Do not use Mapecem mixed with other cements, lime, gypsum, etc.
  • Do not leave Mapecem dry-mixed with aggregates (quickly add the right quantity of water and use immediately).
  • Do not mix Mapecem only with fine sand (use aggregates graded from 0 to 8 mm or Gravel 0-8 for thicknesses of max 8-9 cm).
  • Do not mix Mapecem with an insufficient quantity of water (this will cause partial hydration and compromise its mechanical strength).
  • Do not leave Mapecem mix in the mixer for more than 3-4 minutes.
  • Do not mix Mapecem with an excessive quantity of water (drying time will be lengthened).
  • Since Mapecem screeds are very compact, absorption of the water contained in water dispersion adhesives is slow: it is therefore recommended to use Lignobond, Ultrabond P990 1K or Ultrabond P902 2K (polyurethane adhesives) for installing parquet floors that are particularly sensitive to moisture.
  • Do not add water to a prepared mix and do not remix Mapecem after it has started to set.
  • Do not wet the surface of a screed laid with Mapecem.
  • Do not mix in batching plants and do not transport the mixture by cement mixer lorry: the setting time of Mapecem is too short!


Preparing the substrate

All substrates are suitable for receiving a Mapecem screed as long as they are not subject to rising damp, in which case install a suitable waterproof membrane. For non floating screeds (from 10 to 35 mm), which have therefore to be anchored, the substrate must be dry, free from cracks, resistant to compressive and tensile strength, free from dust, loose materials, paints, wax, oil, traces of gypsum. Floating screeds from 35 to 60 mm Preparing the mix Mapecem must be mixed carefully and quickly, with water and graded aggregates 0-8 mm in diameter or with Gravel 0-8, for a maximum of 3-4 minutes, in a mixer or batcher. The mix must be spread and levelled in the shortest time possible and not more than 30 minutes after mixing. Special care must be taken with the quantity of water that must be enough to form a cohesive mass so that tamping gives a flat surface without a cement film. Mapecem, aggregates and water can be mixed:

  • in a drum mixer;
  • in an ordinary concrete mixer;
  • in a screw mixer;
  • manually, with a shovel.

The Mapecem mix can be placed using an automatic pressure pump. In any case it is absolutely necessary to strictly follow the instructions regarding the dosage and mixing time.

Spreading the mix

The Mapecem mix is placed onto a substrate like any ordinary concrete. A polyethylene sheet must be laid (even over a bituminous membrane or other existing waterproofing substrate) in order to create an easily flowing layer between the Mapecem screed and the already existing substrate and at the same time to prevent any rising damp. If the Mapecem screed is crossed by pipes, it is necessary to lay a light metal mesh (a hexagonal mesh, for instance) over the screed as a reinforcement. Mapecem screeds are prepared using the same methods as those for ordinary cement screeds: preparing levelling strips, spreading the mix and accurately compacting it and then tamping to obtain a better surface finish. Around the perimeter of the area and around the columns etc., it is recommended to insert a 1 cm thick anti-fracture material (such as felt board, cork, polystyrene, etc.). If work is interrupted for more than 1 hour, it is necessary to cut the screed perpendicularly and insert pieces of rod (20-30 cm long and 3-6 mm in diameter) into the edge of the screed. They should be inserted 20-30 cm apart to guarantee perfect bonding and to avoid cracks and differing levels.

Bonded screeds from 10 to 35 mm thick Preparing the mix, proportions and spreading the mix are exactly the same as for floating screeds, but first it is necessary to apply a Planicrete anchoring slurry onto the perfectly clean substrate. Dosage of the anchoring slurry Planicrete: 1 part by weight Water: 1 part by weight Mapecem: 2 parts by weight In order to ensure bonding, the slurry must be applied onto the surface that needs to be covered just before the Mapecem screed is installed (fresh on fresh).


Electronic hygrometers supply only indicative values for measuring moisture. The residual moisture level of Mapecem screeds must absolutely be measured with a carbide hygrometer, which provides absolute values of moisture by weight. Cleaning Tools are cleaned with plenty of water.


Consumption varies depending on the thickness of the screed and the amount of Mapecem. For 350-450 kg of Mapecem per m3 of aggregates, consumption is 3.5-4.5 kg/m2 per cm of thickness.


20 kg paper bags.


12 months in a dry place in the original packing. However, in time, setting time could be slower without altering the final performances. Manufactured in compliance with the regulations of the 2003/53/EC Directive.


Contains cement, that in contact with sweat or other body fluids produces an irritant alkaline reaction. Use protective gloves and goggles. For further information consult the safety data sheet.



Although the technical details and recommendations contained in this product report correspond to the best of our knowledge and experience, all the above information must, in every case, be taken as merely indicative and subject to confirmation after long-term practical applications: for this reason, anyone who intends to use the product must ensure beforehand that it is suitable for the envisaged application: in every case, the user alone is fully responsible for any consequences deriving from the use of the product.


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