Effective Surface Preparation

 

When decorating surfaces, effective pre-treatment will significantly extend the longevity and protection of the painted system.   This is particularly important when redecorating previously painted surfaces. 

The following products are optimised for use with KEIM Mineral Paint systems and designed for every potential surface issue.

 

 

STANDARD PRE-TREATMENT RECOMMENDATIONS
  • All loose, flaking and unstable material must be identified and thoroughly removed using stiff brushes and broad-bladed scrapers to get back to a sound edge; edges should then be feathered in.  Ensure that any paint materials left remaining and the underlying substrate is sound and adhering well.  
  • Caution should be taken with the removal of any per 1960’s coatings as they may contain lead.
  • If the surfaces are being chemically stripped ensure that they are thoroughly washed down of all residue prior to decoration.  Due to the potential for an osmotic drawing reaction we do not recommend the use of poultice based strippers if the surfaces are to be redecorated.
  • Any gloss or shiny surfaces should be thoroughly flatted down using sand or emery paper to create a good key.  Any powdery or chalking surfaces will require treatment prior to decoration.
  • Any mould and fungal growth must be thoroughly removed using wire brushes to remove all growths and then treated with KEIM Algicid. 
  • Surfaces should be repaired/re-rendered using appropriate materials and dressed back to the surrounding substrate. 
  • Any newly repaired areas must be allowed to dry out for a minimum period of 15 days (28 days for NHL (Natural Hydraulic Lime)  prior to the application of KEIM Mineral Paints.
  • KEIM Mineral Paints should be applied onto wind dry surfaces where the moisture content on or near the surface (to a depth of 5mm approximately) should be no greater than 18% by volume. 
  • Use only KEIM recommended fillers and sealers.  Acrylic, resin and gypsum based fillers particularly are not recommended for use with mineral paints
  • All surfaces must be thoroughly washed down with clean cold water to remove all surface dirt and dust. 
  • When all surfaces are clean, sound, wind dry, dust free and free from all surface contaminants, decoration using KEIM Mineral Paints may proceed.

OVERVIEW OF KEIM PRE-TREATMENT PRODUCTS

PAINT REMOVAL

KEIM STS 7 M

KEIM STS 7 M is an environmentally friendly, non hazardous paint stripper for the removal of existing paint finishes from mineral substrates prior to the application of KEIM Mineral Paint systems.  KEIM STS 7M is particularly well suited for the removal of acrylic paints, it is also an effective paint softener for use with a high pressurised wash system, such as the ThermaTech or DOFF systems. 

Colour shade
Green/blue

Application
Brush

Consumption
0.3-1 kg per square metre depending on number of paint layers

Packaging
5 lt and 20 lt containers

ANTI-FUNGAL TREATMENT

KEIM Algicid-Plus

KEIM Algicid is a non acidic fungicide wash used to destroy algae and micro-organisms on all mineral surfaces, suitable for both removal of and protection from mould and algae.  KEIM Algicid can be used as a one or two coat system depending on the severity of the algae growth. 

Colour shade
Colourless

Application
Brush

Consumption
Approx. 0.2 lt/m2 

Packaging
5 lt and 20 lt containers

CLEANING TREATMENTS

KEIM Steinreiniger N (Stone Cleaner)

KEIM Steinreiniger N is a neutral, environmentally harmless, biodegradable cleaner suitable for the mild and gentle cleaning of light pollution on natural stone and render facades.  

Colour shade
Colourless

 

 

Packaging
10kg containers

KEIM Lime Remover

KEIM Lime Remover is a solvent free, pre-treatment and cleaning agent for render substrates.  KEIM Lime Remover removes lime sinter from new renders and cleans old render and brickwork substrates.  KEIM Lime Remover is also used for etching of surfaces such as highly polished concrete and glass/glazed tiles to ensure good adhesion of mineral paints. 

Colour shade
Colourless

Packaging
5lt containers

KEIM Concrete Cleaner

KEIM Concrete Cleaner is a cleaning concentrate used to remove contamination and release agents from concrete surfaces. 

Colour shade
Colourless

Packaging
5lt containers

SURFACE CONSOLIDANTS

KEIM Fixativ

KEIM Fixativ is a silicate binding agent and dust suppressant which reacts chemically to consolidate the surface. KEIM Fixativ is water vapour permeable and is suitable for external and internal use on surfaces with light chalking and dusting. 

Colour shade
Clear

Application
Brush or airless spray

Consumption
Approx. 0.1 l/m2

Packaging
4 lt containers

KEIM Silex OH

KEIM Silex OH is an ethyl silicate consolidant system for natural stone, render and other absorbent mineral surfaces.  KEIM Silex OH is suitable for surfaces where the substrate has become unstable and a deep surface penetration is required to strengthen embrittled surfaces.  KEIM Silex OH is not a water repellent system and requires over-coating. 

Colour shade
Clear

Application
Brush, flood coat

Consumption
Site trials always necessary

Packaging
5 lt containers

SURFACE STAINING

KEIM I.G. Primer (I & F Grund)

KEIM I. G. Primer is a colourless primer with good water vapour permeability used to obliterate staining.  KEIM I. G. Primer is particularly effective for substrates that are contaminated with soot, nicotine and tar.  Suitable for application onto painted and unpainted substrates.

Colour shade
Colourless

Application
Brush

Consumption
Approx. 0.1 l/m2

Packaging
5 lt containers

KEIM Blockweiss

KEIM Blockweiss is a white pigmented water based priming coat with high obliterating coverage for internal use.

Colour shade
White

Application
Brush, roller

Consumption
Approx. 0.15 lt/m2

Packaging
2.5 lt and 12.5 lt containers

KEIM I.W. Primer

KEIM I. W. Primer is a white pigmented, solvent free, aqueous based sealer with excellent water vapour permeability.  KEIM I. W. Primer is ideal for use with interior mineral paint systems, and particularly suitable for use on gypsum plasterboard.

Colour shade
Clear

Application
Brush, roller

Consumption
Approx. 0.1 l/m2

Packaging
10 lt pack size: 2 part; 8 lt + 2 x 1 lt

WATER REPELLENT & SALT EFFLORESCENCE PRIMERS

KEIM Silan-100

KEIM Silan 100 is a waterproofing primary coat which can be used as a hydrophobic impregnation for mineral substrates prior to the application of KEIM Mineral Paints.  KEIM Silan 100 can only be applied onto bare surfaces. 

KEIM Silan 100 also has the ability to resist the passage of some waterborne salts and can be used for this purpose. 

Colour shade
Colourless

Application
Brush, low-pressure spray gun

Consumption
0.2lt/m2 for one coat, 0.3lt/m2 for two coats

Packaging
5 lt containers

KEIM Silan Primer

KEIM Silan Primer is a waterproofing primary coat which can be used as a hydrophobic impregnation for mineral substrates prior to the application of Keim Mineral Paints.  It is particularly good practice to pre-treat horizontal and inclined surfaces with KEIM Silan Primer prior to redecoration to help shed water and protect the surfaces. KEIM Silan Primer can only be applied onto bare surfaces. 

KEIM Silan Primer also has the ability to resist the passage of some waterborne salts and can be used for this purpose. 

Colour shade
Colourless

Application
Brush, low-pressure spray gun

Consumption
0.2 lt/m2

Packaging
5 lt containers

This site uses cookies, if you continue you agree to our usage policy.
More details