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Kiilto Keraprimer

Improves Kiilto waterproofing membranes' adhesion to substrates which are suitable for wet rooms, for example, smoothing compounds, concrete and board. Water-soluble

Special features

  • primer for Kiilto waterproofing membranes
  • yellow colour
  • water-based


Adhesion-improving primer prior to applying Kiilto waterproofing membranes.


1 l diluted 1:1 with water covers approx. 16 m²
1 l undiluted covers approx. 8 m²

Package Size

EAN Code

1 l 6411512120010
3 l 6411512120034
10 l 6411512120102
Package Size 1 l
EAN Code 6411512120010
Package Size 3 l
EAN Code 6411512120034
Package Size 10 l
EAN Code 6411512120102

Density/specific weight

approx. 1

Mixing ratio

Smoothing compound or concrete substrate: 1:1 diluted with water
Gypsum board: undiluted
Other absorbent board substrates: 1:1 diluted with water
Non-absorbent board substrates: undiluted
Coarse concrete or masonry: smooth with a cement based Kiilto levelling compound

Curing rate

1–2 h depending on the prevailing conditions

Application temperature

+10–25 °C

Package sizes

1 l, 3 l, 10 l

Frost resistance



1 l diluted 1:1 with water covers approx. 16 m²
1 l undiluted covers approx. 8 m²


In unopened containers, above +1 °C, for 1 year.

Instructions for use

Remove cement laitance, existing surface materials, sanding dust, loose particles and grease from the subsurface. Sand or grind by machine, if necessary. Apply Kiilto Keraprimer as a thin, even layer onto the surface by using, for example, a brush or a trowel. Rub firmly. The primer layer must be dry before the membrane is applied. Study the Kiilto waterproofing procedure guide before starting the job.

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, visit

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