4900 MULTI-SURFACE PU HEAVY-DUTY VARNISH
- Very abrasion resistant
- Does not yellow; ideal for interior and exterior
- Resists boiling water, alcohol, coffee, red wine and dilute acid and alkali's
- Anti-graffiti; easy to clean with GraffitiShield™ Cleaner
- Clear, water-based, 2K polyurethane topcoat
Clear, water-based, 2-component polyurethane topcoat for use on wood, concrete and pre-painted surfaces, also serves as an anti-graffiti coating.
1. Clear varnish for parquet to protect against stains and scratches
2. Clear sealer for concrete to decrease dusting and increase clean-ability
3. As an anti-graffiti coating
4. As a topcoat on previously painted surfaces to provide extra protection and/or change gloss level.
Gloss level at 60º: 80% (Gloss)
Gloss level at 85º: 10% (Matt)
DRY TIMES BY 20º C/RV 50%
Touch dry: 2 hours
Dry to handle: 8 hours
Dry to recoat: 4 hours
Fully cured: 3 days
Pot Life: 3 hours
Induction Time: 5 minutes
RECOMMENDED WET FILM THICKNESS
RECOMMENDED DRY FILM THICKNESS
20 m²/l at 20 µm dry film build for vertical surfaces
13,5 m²/l at 30 µm dry film build for horizontal surfaces
Ensure surface to be varnished is clean, dry, sound and free from wax, oil or any other
contamination. If wax has been used clean the surface thoroughly with white spirit prior to sanding.
Bare wood should be sanded to a smooth surface, always working with the grain.
Sound previously varnished surfaces should be lightly sanded to provide a key.
must be at least 30 days old prior to varnishing plus 1 week per cm if the concrete is above 4 cm thickness.
The moisture content of the substrate may not exceed 4%.
Concrete must be clean, dry and free from any surface laitance (a weak dusty layer on new concrete) and any other surface contaminants such as oils, grease, dirt etc. prior to applying the varnish. Not suitable for direct use on power floated concrete.
DIRECTIONS FOR USE
Base and activator are supplied in correct proportions. First stir the base component, then add activator gradually to the base, and mix thoroughly. DO NOT MIX PART UNITS.
Wait 5 min after mixing. Do not store mixed product (residue) in a closed can. Badly activated or incorrectly mixed materials will affect performance and may cause early failure or discolouration.
When used outdoors on top of pre-painted surfaces: If the old paint is not UV-resistant, the use of Multi-surface PU Heavy-Duty Varnish is not recommended.
Application temperature 10-35°C (at least 3°C above dew point) and RH < 85%.
APPLICATION & THINNING: BRUSH
Apply evenly using light strokes following the grain of the wood. For best results 3 coats are recommended on new wood/concrete (dilute 1st coat with 10% water) and 2 coats on previously varnished surfaces.
APPLICATION & THINNING: ROLLER
Use a short nap mohair roller. For best results 3 coats are recommended on new
wood/concrete (dilute 1st coat with 10% water) and 2 coats on previously varnished
APPLICATION & THINNING: AIRLESS SPRAY
APPLICATION & THINNING: AIR-ATOMISED SPRAY
CLEANING OF EQUIPMENT / SPILLS
Clean spills with water. When used as an anti-graffiti coating, use GraffitiShield™ Cleaner to remove graffiti.
Not suitable for use on plastic type materials, e.g. imitation wood. Do not wash the varnished surface for at least 3 days after application. If water is spilled on it during this period gently wipe off with a soft dry cloth. Taber abrasion: weight loss CS17 / 1000 cycles: 17 mg Resist stains of: Alcohol (40%), Ammonia, Fatty acids, Coffee, Red Wine, Water, diluted acids & alkalis.
VOC level: 25 g/l
VOC readymix: 25 g/l
VOC category: A/j
VOC limit: 140 g/l
Remarks regarding safety: Consult Safety Data Sheet and Safety Information
printed on the can.
2 years from date of production in unopened cans, if stored in dry, well ventilated areas, not in direct sunlight at temperatures between 5° and 35°C.