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Polyurethane
Varnish G4
G4 Pond Seal is a moisture cured, one component polyurethane
which forms a non-porous, tough, durable but flexible seal.
Seals porous substrates such as concrete, brick and porous stone.
G4
will not seal lightweight
block, these need to be cement
rendered
before application of G4. In
general it is advised that
all
substrates are rendered below the water line.
G4 can be used
at
low temperatures, down to 0ø C and in areas of relative high
humidity.
G4 cannot be used on bitumen but will not damage butyl
rubber
liners. G4 is easy and quick to
use, simply brush on the
recommended
coats in a day.
WORKING INSTRUCTIONS
1) Ensure cement render is clean, dry and porous - highly
trowelled
ridged surfaces are not advised. New render should be
allowed
to harden for 21-28 days depending on conditions.
Reinforcing fibres in the cement render must be burnt or sanded
off
before coating.
2)
Repair cracks and damaged areas.
3)
Apply first coat by brush, avoid thick coats and allow to
become
fingerprint dry, or dry enough to walk upon carefully,
approx.
60-90 minutes depending on humidity. Apply subsequent
coats
following the above instructions. Do not allow longer than
4
hours to elapse between each coat. Normally 3 coats of G4
standard
are sufficient but on very porous or
rough surfaces a
4th
coat may be required. Rain
will affect uncured G4 so make
provision
for covering if rain is suspected.
4)
Allow to harden for 72 hours before washing down with clean
water.
Then follow aquarist instructions.
CONSUMPTION
Varies slightly depending on porosity. On normal porous cement
renders:
G4 Standard - 4
coats = 840 g/sq.m (for 4 coats).
CLEANING
Clean brushes and tools with cellulose thinners or acetone.
Alternatively
wash out in hot water and detergent and dry.
GRP.
POOLS
Please see (ponds & tanks) guide to coating concrete pools
with
glass fibre.
Unit 4, Millbuck Way, Springvale Ind Est, Sandbach
CW11 3HT.
Tel/Fax: (01270) 766685
www.resin-supplies.co.uk Email:
enquiries@resin-supplies.co.uk
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