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 Application Instructions)
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 coat!
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
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 on site.
Cement, gypsum and lime
Remove dust and dirt. Sand the
surface to remove powder coatings.
Remove oil residue, dust and
Remove dust and dirt. Use filler if
Clay, face masonry
Remove dust and dirt.
Old, sound oil or latex
Abrade the surface and remove dust,
or wash the surface.
Old chalky paint
Brush with a wire brush and remove
Water-based or unsound old
Remove completely, wash and
Remove any residual separation
Check joints for fit and
Gypsum fibre board
Check joints for fit and
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
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.
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.