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Mapei Primer G, primer: the pack
Mapei's own picture. The pack we stock: 25 kg.

Mapei · PrimerNo. 10 / 47

Primer G

Synthetic resin primer in water dispersion.

Synthetic resin primer in water dispersion with a very low content of volatile organic compounds (VOC).

  • For treating gypsum surfaces prior to installing ceramic tiles
  • As an anchoring coat for gypsum-based sprayable plasters
  • To improve the adhesion of smoothing compounds on cementitious or anhydrite and gypsum-based surfaces
  • To provide uniform absorption in cementitious or gypsum surfaces
  • Preparing cement-based surfaces prior to smoothing with self-levelling or thixotropic smoothing compounds
  • Between layers of smoothing compounds once the first coat is perfectly dry
  • On anhydrite surfaces prior to applying cement-based products
  • On gypsum walls as a fixative for wallpaper adhesives
Consumption
0.08-0.15 kg/m²
Pack we stock
25 kg

Related documentation

  • Technical data sheet

    Edition 532-6-2025-gb · 4 pages · 1.5 MB · PDF

    DownloadOpen
  • Safety data sheet

    Sent by WhatsApp or email

    Request

Mapei's own document, unaltered, saved on 2026-11-05. Mapei revises its data sheets: ask us for the current edition before you specify.

Coverage calculator

The arithmetic uses Mapei's published consumption for Primer G and the pack sizes we stock. Set your own wastage allowance.

m²
%

You need

1

x 25 kg drum

Data sheet quantity
1.6-3 kg
With 10% wastage
1.76-3.3 kg
Send this to WhatsApp for a quote

The figures behind it.

  • Normal consumption is between 0.08 and 0.15 kg/m².

Consumption on site depends on the substrate, the tool and the applicator, which is why wastage is yours to set. The result is a quantity to plan and quote with, not a guarantee of coverage. Confirm the system against the current Mapei technical data sheet before ordering.

Application

In Mapei's own words, from the technical data sheet.

  1. 01For treating gypsum surfaces prior to installing ceramic tiles
  2. 02As an anchoring coat for gypsum-based sprayable plasters
  3. 03To improve the adhesion of smoothing compounds on cementitious or anhydrite and gypsum-based surfaces
  4. 04To provide uniform absorption in cementitious or gypsum surfaces
  5. 05Preparing cement-based surfaces prior to smoothing with self-levelling or thixotropic smoothing compounds
  6. 06Between layers of smoothing compounds once the first coat is perfectly dry
  7. 07On anhydrite surfaces prior to applying cement-based products
  8. 08On gypsum walls as a fixative for wallpaper adhesives

Where it is not the right product.

  • Primer G does not waterproof gypsum substrates even though it considerably reduces their porosity and absorption
  • Do not apply onto magnesium substrates
  • Primer G is not recommended for external applications or where rising damp is present
  • Do not apply Primer G in such a quantity that it forms a surface film; dilute with water as appropriate for the absorption of the substrate

Specification

  • GEV EMICODE · EC1 Plus - very low emission
Consistency
liquid
Colour
light blue
Density (g/cm³)
1.01
pH
8
Dry solids content (%)
18
GEV EMICODE (according to EN ISO 16000 - 3, 6, 9, 11 and CEN/TS 16516)
EC1 Plus - very low emission
Maximum VOC according to 2004/42/EC
0 g/l
Application temperature range
from +5°C to +35°C
Drying time before the application of the levelling compounds or adhesive: - concrete
30 min
gypsum
30-60 min

Typical values as Mapei prints them in data sheet edition 532-6-2025-gb. They are not a specification for your project: the current Mapei data sheet is.

On site

Packs, mixing and storage.

We stock
25 kg
Mapei packaging
Primer G is available in 25, 10 and 5 kg plastic drums and in 1 kg bottles.
Storage
Primer G, in its original unopened packaging, can be stored for 12 months. Protect from frost.

Primer G in Tanzania

Tell us the area. We will quote the job.

Sahihi is an authorized Mapei distributor in Dar es Salaam. Send the quantity of Primer G you need, or describe the job and we will work it out with you.