Range of application: For use in interior areas to stabilise sandy, chalky or highly absorbent surfaces. As an adhesion agent for LIVOS wall paint coatings. Can also be used as a primer for
wall papering on gypsum board with LAVO Natural Wall Paper Paste No. 535.
Technical qualities: Not pigmented, water-based sealer with deep penetration, strong stabilisation and outstanding permeability of water vapour.
Full declaration: Water, linseed oil, beeswax, methyl cellulose, dammar, Venetian larch resin, shellac, Bentonite, orange oil, Isoaliphates, borax, rosemary oil and silver
Colour: Transparent to whitish when dry.
Dilution: As a rule, the concentrate should be diluted with water in a ratio 1: 1.
Application method: Apply with brush or roller at temperatures above 10oC (50°F). Wash equipment periodically as soon as grains and streaks begin to develop. (See below for
VARIATION OF USES:
Coverage: 1 litre diluted solution is sufficient for approximately 17 m2 . Could be considerably less depending on the condition and absorbency of the surface. Always do a test
Drying time: At 23°C (73° F) and 50 % relative humidity can be painted over after 24 hours.
Cleaning up: Clean equipment immediately after use in warm, soapy water using LATIS Natural Intensive Cleaner No. 551 or TRENA pH-Neutral Cleaner No. 556.
Specific gravity: Approximately 0.96 g/ml.
Advice: Contains limonene
Disposal: According to locally regulated laws.
Container sizes : 0.5 lt; 2.5 1t; 10 lt; 30 1t.
Storage: Cool and dry, protected from frost and freezing. Unopened, the product can be stored for 2 years. Please do not store opened or diluted product. Use contents of opened
containers within 2-3 days. Please see label for expiry date.
How to use GRAVA Wall Primer Sealer No. 408
General surface requirements: The surface must be dry, able to absorb and bear load, neutral, clean and free of separation agents, cracks, efflorescences and fungi.
Preparation: Close holes and cracks with VEDO Wall Filler No. 440. Construction cracks must be repaired with a crack bridging repair system. The following summary contains information on
pre-treatment for various surfaces, and when to use GRAVA Wall Primer Sealer No. 408. GRAVA Wall Primer Sealer No. 408 must be diluted enough so that there is no development of a film. Please test
|Cement, gypsum and lime plaster
||Remove dust and dirt. Sand the surface to remove powder coatings.
||Remove oil residue, dust and dirt.
||Remove dust and dirt. Use filler if necessary.
|Clay, face masonry
||Remove dust and dirt.
|Old, sound oil or latex paint
||Abrade the surface and remove dust, or wash the surface.
|Old chalky paint
||Brush with a wire brush and remove dust.
|Water-based or unsound old paint
||Remove completely, wash and dry.
||Remove any residual separation agents.
||Check joints for fit and tightness.
|Gypsum fibre board
||Check joints for fit and tightness.
Application: Stir concentrate well. Test applications! Depending on absorbency of the surface, dilute with 1-2 parts slightly warm water. Add water gradually while stirring. For highly
absorbent surfaces such as clay, or lime plaster, use undiluted GRAVA Wall Primer Sealer No. 408, or slightly diluted with water (20 %).
Important tips: For surface preparation before wallpapering, apply a mixture of ready to use LAVO Natural Wallpaper Paste No. 535 and GRAVA Wall Primer Sealer No. 408 diluted with 20
% of water at a ratio of 1:1. Nicotine or water spots can be blocked out with REMIO Natural Stain Blocking Primer No. 618, chip-board, ply-wood, OSB-board, or material containing penetrating
substances, need to be primed with Natural Stain Blocking Primer No. 618. When REMIO is used, it is not necessary to prime with GRAVA. In case of salt bleeding, a professional must be called in to
specify and correct the problem before wall sealing can start. Possible separation of the product does not impair the technical quality.
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These directions are the result of long years of research and practical testing. They are backed by our most current expert information. New findings may invalidate this information. This data
sheet is meant to serve as information and instruction. No legal liability should be interpreted from it. In case of doubt, please contact the retailer, wholesaler, or manufacturer.