Kiilto Pro Start Primer

Forms a good bond between the levelling compound and the subfloor. Water-based.

Special features

  • absorbs dust and retards penetration of water in the levelling compound into the substrate 
  • very economical
  • water dilutable




A water-based primer suitable both for porous and non-absorbent surfaces in interior areas prior to levelling. For non-absorbent substrates, we recommended using Kiilto Fix Primer prior to levelling.

Kiilto Start Primer is suitable for the priming of

- concrete- and cement-based levelling compounds (dilution: 1 part primer/4 parts water)
- floors with remains of old adhesive, such as synthetic resin and bitumen (use undiluted)
- surfaces that cannot tolerate moisture, e.g., gypsum and wooden surfaces (use undiluted)
- construction boards, e.g., chipboard and gypsum board etc. (use undiluted)
- non-absorbent surfaces, e.g., paint and ceramic tiles (use undiluted)

Primer has good moisture resistance and forms a good bond between the levelling compound and the subfloor. Alkalinity of cement does not impair the effect of the primer. Not suitable to be used as an additive to levelling compound.

Package Size EAN Code
1 l 6411513702017
3 l 6411513702031
10 l 6411513702109
Application temperature

Optimal +18–20 °C, minimum +10 °C

Classifications and certificates





Dilution: Primer 1 l + water 4 l = 5 l approx. 30 m².
Undiluted/non-absorbent substrate: Primer 1 l approx. 10 m²

Density/specific weight


Frost resistance


Package sizes

1 l, 3 l and 10 l plastic containers


Unopened in a dry place 1 year.

Substrate humidity

- Concrete < 90 % RH

Instructions for use

Remove cement laitance, dust, loose dirt and grease. If needed, carry out mechanical sanding or grinding. Apply the primer as a thin, even layer onto the surface by using, for example, a roller, brush or trowel. Rub firmly. Avoid primer bonds. Concrete and levelled substrates can be smoothed immediately after priming. Let building boards, non-absorbent surfaces and surfaces with old adhesive residue dry for approx. 2 hours before levelling. The prevailing conditions, such as the temperature of the room, and the texture and moisture of the subsurface will significantly affect the drying process. Therefore, our recommendations should only be used as a guide. Levelling must be done within 24 hours, at the latest, after priming.

NOTE! Parquets that will be glued down to the subfloor or underfloor heating floors: Remove laitance and other impurities (e.g., remains of old adhesives) that might weaken the subfloor; these must be removed by sanding/grinding. Priming should be done only on areas that will be levelled or smoothed (subfloors of block parquets must neither be primed nor levelled). On construction board subfloor, the parquet is glued down directly onto the boards (no priming, no levelling).

Additional information

The information given in this product data sheet is based on our tests and our practical knowledge. The technical data is defined in standard conditions. Variations in local working conditions and methods will affect the product performance and result. We guarantee the high quality of our products according to our Quality Management System. No liability can be accepted from incorrect use of the product or prevailing conditions, over which we have no control. Thus, we cannot be held responsible for the final result. The correct use of the product presupposes that the user has made him/herself aware of the contents of the working instructions and procedure guide, if provided.

Environment and safety

Avoid unnecessary skin contact and exposure with the fresh product, use safety gloves. Refer to material safety data sheet. For information on product and package disposal, go to