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Floor compound LM 6000
Underfloor heating filler LL 5500
Coarse floor levelling compound LM 5000
Floor levelling plaster LT 4000
Floor concrete LB 7
Fescorapid
Fescofine
FlowPlan
Flow CS
Flow FS
Flow GS 3.0 mm Gypsum floor mass
Flow Primer
Primer PLUS
Elevation mark
Edge strip 30x30x2000 mm
Bordering strip 8x150 mm
Separation fabric 1.5x50 m
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Flow Primer

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Product description

Brush-on primer for surface pretreatment before floor levelling. Flow Primer improves the adhesion of floor levelling compounds, reduces or eliminates the formation of air bubbles, and prevents water contained in the floor levelling compound from being absorbed into the surface too quickly. For indoor use. 

  • Brush-on primer for floor plasters
  • Dries quickly
  • Easy to spread
  • High spreading capacity
  • Make pumped levelling plasters easier to spread
  • Prevents the creation of air bubbles

Applications

  • Hollow-core slabs
  • Cast-in-place concrete floors
  • Cement-based levelling compounds
  • Plasterboards and chipboards
GTIN code Product name Product number Package size
6416841769053 FLOW PRIMER 10 L 76905 10 l

Base 

  • The substrate must be clean, solid, and dust-free, and vacuumed.
  • Loose layers, cement laitance, and other impurities must be removed mechanically to ensure proper adhesion.
  • The substrate must be sufficiently strong, dimensionally stable, and load-bearing.
  • The base floor structure temperature must be > +10°C and the relative humidity < 95% RH.
  • The relative humidity of the base structure affects the drying time of the floor screed.

Mixing ratio

  • Concrete surfaces and surfaces with cement-based levelling: 1 part Flow Primer, 3 parts water
  • Surfaces that cannot withstand moisture, e.g. plaster and wood surfaces: Use undiluted
  • Mix before use by swirling the package; avoid shaking

Applying the primer

  • Flow Primer is applied as a thin, even layer by brushing. The primer must not be allowed to form puddles.
  • The Primer must be dry before the floor levelling compound is applied (1 to 4 hours, depending on the conditions)
  • Highly absorbent surfaces (e.g. cast-in-place concrete floors) are primed twice.
  • If air bubbles form in the surface of the floor levelling compound, it usually indicates insufficient priming
  • Wash tools and equipment with water immediately

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

Material usage

Hollow-core slab surfaces: finished mixture (mix ratio 1:3) about 10 m2/l
Cast-in-place concrete surfaces: finished mixture (mix ratio 1:3) about n. 5 m2/l
Plaster and wood surfaces (undiluted): about 7 m2/l
Type Liquid
Package size 10 l container
Storage

In a cool room, not below +6°C, up to 1 year in a hermetically sealed original container
Usage temperature

+10°C...+25°C (base floor structure and room 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.