• HK Stain Grey Protect
    • HK Stain Grey Protect

    Article No. 4200225701

    HK Stain 3 in 1 Grey Protect

    Decorative, solvent-based premium grey stain for exterior use

    Colour: silver grey (RC-970) | 2257
    Colour: silver grey (RC-970) | 2257
    Please choose a colour

    Product specifications

    Density (20°C) Approx. 0.87 g/cm³
    Flash point > 60 °C
    Odour Solvent-like, odourless once dry
    Degree of gloss Silk matt
    Viscosity (20 °C) Approx. 80 s ISO 2431/3 mm

    The stated values represent typical product characteristics and are not to be construed as binding product specifications.

    Field of application

    • For use outdoors
    • for elements with limited dimensional stability
    • for not dimensionally stable elements
    • For use on exterior wood
    • Wood without ground contact
    • Wood building elements with no dimensional stability: e.g. fences, framework, carports, planking
    • Wood building elements with limited dimensional stability, e.g. folding shutters, matchboarding, summerhouses
    • Dimensionally stable wood building elements (when used as a primer only): e.g. windows and doors
    • Primer, intermediate and finishing coats


    • Solvent-based
    • Natural grey tones for exterior wood
    • Even colour tone across areas exposed to weathering and areas sheltered from weathering
    • 3 in 1: impregnation, priming and stain
    • Protects wood from moisture and UV radiation
    • Impregnation effect: saturates wood to protect against moisture
    • Diffusion-open protective film: moisture can escape
    • Water-repellent: wet surfaces dry quickly
    • Protection against weathering (constructive protection and the protection provided by the product) reduces the risk of blue stain and rot
    • Increased solids content provides physical protection against nesting wasps
    • Film protects coating against blue stain, mould and algae
    • Subsequent treatment without sanding
    • Preparation
      • Substrate requirements

        The substrate must be clean, dry, free of dust, grease and loose substances, and prepared in the correct manner.

        Dimensionally stable wood building elements: wood moisture content 11-15%

        Wood building elements with limited or no dimensional stability: wood moisture content max. 18%

      • Preparations

        Completely remove old coatings (e.g. paints or medium-build stains), bark, bast and dirt.

        Remove loose and torn knots as well as resin that bleeds and clean with a suitable product (e.g. Remmers thinner & brush cleaner).

        Smooth, planed wood surfaces should be sanded and dusted before the coating is applied to ensure better absorption.

        Observe BFS Code of Practice No. 18 "Coatings on Wood and Wooden Working Materials in Outdoor Areas".

    • Application
      • Application temperature: min. 5 °C max. 30 °C
      • Stir before use
      • Brush
      • Stir well.

        Private users: Application by brush.

        Professional operations: Application by brush, dipping, flow coating; spraying only in closed facilities.

        Apply in the direction of the grain.

        Apply a second coat once the first has dried.

        When coating continuous surfaces, only use materials with the same batch number as slight differences in colour, gloss and texture may occur.

        Seal opened containers well and use contents as soon as possible.

    • Application instructions
      • Drying time: can be worked over after 12 h
      • Check colour, adhesion and compatibility with the substrate by setting up a trial area.

        If the surface is overcoated with other products it is recommended to test the adhesion to the substrate.

        Rainfall may cause water soluble substances to bleed from wood that is rich in such substances, e.g. oak, red cedar, afzelia, redwood, etc. This may lead to the discolouration of light-coloured masonry or render.

        Pre-testing is recommended also on other woods.

        In order to avoid the use of wood preservatives as far as possible, the construction should be designed to be water-repellent ( avoid horizontal surfaces, open end-grain wood, capillary joints, water and moisture pockets, splash water contact, sharp edges). If this cannot be guaranteed or if an even higher level of protection is required outdoors, the untreated wood can be impregnated with Wood Preservative Primer* (*Use biocides safely. Always read the label and product information before use).

        Cut end-grain surfaces at the bottom to create a water-drip edge.

        Apply two subsequent coats of end-grain wood preservative to end-grain wood and cut surfaces in order to protect them against moisture.

        Each layer of stain results in a more intense colour and a glossier finish.

      • Drying

        Approx. 12 hours at 20 °C and 65% relative humidity.

        Low temperatures, poor ventilation and high humidity delay drying.

        Even once the coating is sufficiently dry for handling, less volatile solvents may cause surface to feel clammy to the touch over several days!

        This property does not constitute a flaw!

        The evaporation of these solvents can be accelerated by the ensuring the highest possible air exchange.

      • Thinning

        Ready to use

    • Working tools / cleaning
      • Brush
      • Brush with natural bristles, flat brush

      • Clean tools immediately after use with thinner and brush cleaner.

        Ensure that any residue from cleaning is disposed of correctly.

    • Storage / shelf life
      • Store frost-free and cool / protect for moisture / close containers
      • At least 36 months in unopened, original containers stored cool, dry and protected from frost.

    • Usage
      • Approx. 100 ml / m² per layer applied
      • Approx. 100 ml/m² per coat, at least 2 coats required

      • Planed or very thick woods are less absorbent and may require a third coat

    • General information
      • On planed larch and softwoods with a high resin content, the coating may have reduced adhesion and resistance to weathering. This is especially the case on horizontal year rings, knots and areas of winter growth that are high in resin. Maintenance and renovation must be carried out more frequently on these surfaces.
        The only remedy for this is pre-weathering or very coarse sanding (P80).
        If these wood types are rough-sawn, considerably longer maintenance and renovation intervals are to be expected.

        Observe the regulations concerning design principles for wood protection.

        Do not use on horizontal surfaces without drainage slopes and without edge radius, avoid accumulated moisture.

    • Disposal instructions
      • Larger quantities of leftover product should be disposed of in the original containers in accordance with the applicable regulations. Completely empty, clean containers should be recycled. Do not dispose of together with household waste. Do not allow to enter the sewage system. Do not empty into drains.

    • Safety / regulations
      • For further information on the safety aspects of transporting, storing and handling the product and on disposal and environmental matters, please see the current Safety Data Sheet.

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