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Seamless Microdur Plus microcement to the villa pool terrace at Katara Hills, Doha
Microcement — technical data

Cemher Microrock

Two-component polymeric microcement

Manufacturer Cemher
Country of origin Spain
System family Microcement
Supplied and applied by Earth Layers by Conmarble

The product

The high-traffic member of the range: a two-component polymeric microcement with a mineral appearance and a compressive class of C80. Specified for garages, warehouses, galleries, stores and corridors, in four grain sizes suitable for both floors and walls.

Where it is used

Continuous coating for interior floors and walls High-traffic areas such as garages and warehouses Galleries, stores, waiting rooms, corridors and offices

Substrates

Concrete with minimum 25 N/mm² compressive strength and minimum 1.5 N/mm² pull-off Ceramic substrates mechanically roughened to guarantee adhesion Dry, clean and free of dust, grease or dirt Previous varnish or paint fully removed

Application data

Coverage, thickness, mix and cure, as declared by the manufacturer. Site conditions in the Gulf sit at the top of most of these ranges — allow for it in the programme.

Type Two-component polymeric microcement — Comp. A paste, Comp. B liquid
Grain sizes Thick Base · Base · Medium · Fine, all suitable for floors and walls
Consumption — Fine 0.45 kg/m² per coat, 0.9 kg/m² for two
Consumption — Medium 0.55 kg/m² per coat, 1.1 kg/m² for two
Consumption — Base 0.9 kg/m² per coat, 1.8 kg/m² for two
Consumption — Thick Base 1.1 kg/m² per coat, 2 kg/m² for two
Minimum application temperature + 12 °C
Workability at 20 °C Approx. 60 minutes
Underfloor heating Hot water: yes. Electric: no.
pH after 1 day 12

Performance data

Every figure below is reproduced from the manufacturer's own technical data sheet, with the test standard it was measured against. The sheet itself is in the download section.

PropertyResultStandard
Emissions into indoor air A+ UNI EN ISO 16000-6:2019 / UNE EN 16516:2018
Thermal conductivity 0.82 W/mK UNI EN 12664:2002
Reaction to fire Class B UNE EN 13501-1:2019
Adhesion strength > 6 N/mm², Class B 6.0 UNI EN 13892-8:2003
Impact resistance > 25.5 Nm, IR 24 UNI EN 6272-2:2012
Surface hardness > 200 N/mm², SH 200 UNI EN 13892-6:2003
Compressive strength > 80 N/mm², Class C80 UNI EN 13892-2:2005
Abrasion resistance (BCA) Class AR 0.5, max 50 µm UNI EN 13892-4:2003
Water penetration under pressure 5 bar, 3 days — no penetration UNE EN 14891:2017
Slip resistance USRV 41, Class 2 UNE EN 12633:2003
Substrate requirement Minimum 25 N/mm² compressive, 1.5 N/mm² pull-off Cemher data sheet

Where not to use it

The limits are as much a part of the specification as the performance. Everything here is stated on the manufacturer's data sheet.

Cannot be placed on underfloor heating Sensitive to vinegar and other organic acids Contains silica — respiratory protection required when sanding Performance figures marked 1* are measured without sealer
Specification clause

Microcement: Cemher Microrock two-component polymeric microcement in colour [ref] and grain [Fine / Medium / Base / Thick Base], applied over a substrate of not less than 25 N/mm² compressive strength and 1.5 N/mm² pull-off. Compressive strength Class C80 to UNI EN 13892-2:2005, adhesion Class B 6.0 to UNI EN 13892-8:2003. Not to be laid over underfloor heating. Sealed to the sealer specification.

Square brackets mark the choices that belong to the project. Send us the finishes schedule and we will return the clause completed, with the sample and mock-up programme against it.

Documents

Every document is the manufacturer's own, reproduced in full and unaltered under our cover. Free to download, no form.

Cemher Microrock TECHNICAL DATA SHEET · 5 pp · 0.9 MB
Download (PDF, 0.9 MB)
Microrock Base TECHNICAL DATA SHEET · 3 pp · 0.7 MB
Download (PDF, 0.7 MB)

The rest of the

Cemher Microdur Plus Three-component microcement Microrock Base Two-component microcement base Micropool Two-component microcement for immersed surfaces

Technical support for the design team

We supply the material and we apply it, so the specification and the workmanship sit with one party. Send a finishes schedule, an elevation or a mood board and we will come back with the system, the build-up, the sample programme and a completed clause.

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