Primary adhesion Harmony Prim Plus

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Designed for media that is closed, non-absorbent or smooth.

Harmony Prim Plus is a primary adhesion of the aqueous phase to support the closed, non-absorbent or smooth type :

  • wood
  • painting
  • old tiles
  • concrete helicopter

Use before the application of Harmony waxed Concrete or Harmony Spray Concrete.


Made in France
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Harmony Primer Plus is a water-based, solvent-free synthetic acrylic styrene copolymer resin-based bonding primer for application to non-porous or smooth base surfaces, such as timber, paint, old tiling, power floated concrete, etc.

Harmony Primer Plus enhances cohesion and improves the hydration of renderings.


Type: Bonding Primer

Colour: white liquid (Primer Plus)

Packaging: 1 l, 5 l

Dosage: 1 l for 10 - 12 m2 (varies, depending on porosity)

Storage: 12 months in unopened original packaging, stored in a dry and frost-free location.

Guarantee: Manufacturer’s liability

Caution: Sensitive to frost!

Tools & Cleaning

Roller, gloves.

Clean tools in water after use.


The base surface must be resistant, sound, solid, clean, dry and free of humidity.

Use Harmony Neutral Agent or Harmony Degreaser for any cleaning required (to remove grease, oil etc).

Primer, or Primer Plus – which one to choose?

It is essential to establish whether the base surface is porous or non-porous.

To do this, apply a few drops of water to the surface concerned. If the water is absorbed, the base surface is porous. If not, it is classified as non-porous.

On a porous base surface, apply Harmony Primer, and on a non-porous base surface, apply Harmony Primer Plus.

On a wet base surface, such as a shower, sink, washbasin or, more generally, any porous base surface (plaster, timber, syporex, BA 13, etc.) which is in regular contact with water and has not been sealed beforehand, Harmony Epoxy Primer or Harmony waterproof under-sealer should be applied.

Apply glass-fibre reinforcing strips at corners.

Application of Harmony Primer Plus

Application must be completed within a temperature range of 5° - 25°. 

Harmony Primer Plus is supplied ready for use, but can be diluted (max 50%). Apply uniformly to the base surface using a roller, with no excess thickness and leaving no gaps.

For large surface areas, use the 250 or 500 mm PermaPro special floor nozzle.Drying time: 30 minutes - 2 hours, depending upon the type of base surface and the ambient temperature.

Once touch dry, Harmony Primer Plus is ready to be covered. On a highly porous base surface, such as anhydrite screed, a second coat should be applied.



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  • Shipped within 48 hours After reception of payment. . Period for carriage between 2 and 4 days

  • Delivery to the following countries
    France, Belgium, Luxembourg, Germany, Austria, Poland.

  • For Corsica, the DOM/TOM and other destinations in Europe, please contact us so that we can assess the shipping costs

Customer Service

You can contact us

  • via chat : at the bottom right

  • via telephone : 04 42 20 10 09
    from Monday to Wednesday from 8:00 a.m. to 8:00 p.m.
    from Tuesday to Friday from 8:00 a.m. to 12:00 a.m.

  • via email : At the following address


Capacity 1 L
Consumption 1L to 10m2
Cleaning Water
Conservation 12 months in its unopened packaging and stored in a dry, frost-free place
Warranty RC manufacturer

Product instructions


Questions & answers




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