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Sealed Microdur Plus microcement in the lounge at Maysan, LXR Doha
Primers and sealers — technical data

Primer 100

Water-based adhesion promoter

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

The product

The adhesion promoter that goes under the Cemher systems. Used undiluted, it takes both absorbent and non-absorbent substrates, and it has a defined overcoat window — a minimum of 30 minutes and a maximum of 8 hours.

Where it is used

Primer between finishes and substrates Primer over tiles, marble, metal or terrazzo Under microcement and lime plaster systems

Substrates

Absorbent and non-absorbent mineral substrates Tile, marble, metal and terrazzo

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 Water-based resin, milky liquid
Consumption 6 – 8 m²/L per coat, undiluted
Application Spray, brush or roller, covering the surface well
Touch drying 30 minutes
Overcoat window Minimum 30 minutes, maximum 8 hours
Workability at 20 °C Approx. 2 hours
Density 1.04 g/cm³
Viscosity 10 – 11 s, Ford Cup 4
Application temperature 0 °C to 30 °C
Packaging 1 L
Shelf life 24 months, stored 10 – 30 °C, dry and ventilated

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
VOC Declared VOC content nil in the manufacturer's data sheet — content certificate available on request Cemher data sheet
Toxicity / flammability No Cemher data sheet
Compatibility Compatible with a wide range of Cemher products 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.

To be used undiluted The first finish coat must follow between 30 minutes and 8 hours after priming Application range 0 °C to 30 °C
Specification clause

Primer: Cemher Primer 100 water-based adhesion promoter applied undiluted at 6–8 m²/L by [spray / brush / roller] to the substrate scheduled. First finish coat to be applied not less than 30 minutes and not more than 8 hours after priming. VOC content as declared in the manufacturer's data sheet.

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.

TECHNICAL DATA SHEET · 8 pp · 0.7 MB
Download (PDF, 0.7 MB)

The rest of the

Maxipur 100% Two-component polyurethane sealer — gloss, satin, matt AURO Plaster Primer No. 301 Plaster primer

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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