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Waterproofing compound WS
Primer KP
Waterproofing strip
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Primer KP

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Product description

Water-soluble Fescon Primer KP is used in the Fescon WS and Fescoseal A+B waterproofing systems. For indoor use.  

  • Pretreatment of substrate before waterproofing
  • Improves adhesion
  • Brushable 

Applications

  • Fescon WS and Fescoseal A+B waterproofing systems
  • Concrete and cement-based filler substrates
  • Building boards suitable for wet spaces
The product is listed in the portal for building products that can be used in Nordic Swan Ecolabelled buildings.
GTIN code Product name Product number Package size
6416841769039 PRIMER KP 1 L 76903 1 l
6416841769046 PRIMER KP 5 L 76904 5 l
6416841769015 PRIMER KP 10 L 76901 10 l

Base

  • The substrate must be clean, dust-free, solid and immobile
  • Loose layers, cement paste, and any other impurities must have been removed mechanically to ensure adhesion. 
  • The subfloor structure must be more than +10°C.
  • When using Fescon WS waterproofing compound, the substrate’s relative humidity must be < 90%, with Fescoseal A+B waterproofing compound < 95%

Mixing

  • Concrete and cement-based levelling compounds: 1 part of primer and 3 parts of water
  • Substrates that do not tolerate moisture, such as gypsum boards on floors and wood substrates: Not to be thinned.
  • Mix the product before use by turning the package avoid shaking.

Application

  • The primer is spread thinly using a brush. Fescon primer must not be applied so much that it creates puddles.
  • The primer must be dry before the waterproofing compound or leveling compound is spread (1–4 hours, depending on the conditions).
  • Highly absorbent substrates (such as in-situ cast concrete floors or renovated floors) are primed twice. The first layer with a ratio of 1:5 (1 part primer, 5 parts water), and the second layer with a ratio of 1:3.
  • Wash tools and equipment with water immediately.

Other points to note

  • When using building boards in wet spaces, check the priming instructions from the manufacturer.

Storage and handling of waste
See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank

Material usage

cement-based leveling compound substrates: ready mixture (ratio 1:3) approx. 10²/l

concrete substrates cast in situ: ready mixture (ratio 1:3) approx. 6 m²/l

gypsum board and wood substrates (undiluted): approx. 7m²/l
Type liquid
Package size 5 l and 10 l
Storage

in a cool place, not below +6°C, in a tightly closed original container for up to 1 years
Density

1 l = 1 kg
Usage temperature

+10°C…+25°C (base and indoor temperature)
Drying time

1-4 h depending on the conditions
Thinner water
Method of application brushing
Transport warm transport
Limitation of liability, product use notes and restrictions: Please familiarize yourself with Fescon Oy's general terms of delivery and the design and work instructions related to the product.