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.
will not seal lightweight
block, these need to be cement
before application of G4. In
general it is advised that
substrates are rendered below the water line.
G4 can be used
low temperatures, down to 0ø C and in areas of relative high
G4 cannot be used on bitumen but will not damage butyl
liners. G4 is easy and quick to
use, simply brush on the
coats in a day.
1) Ensure cement render is clean, dry and porous - highly
ridged surfaces are not advised. New render should be
to harden for 21-28 days depending on conditions.
Reinforcing fibres in the cement render must be burnt or sanded
Repair cracks and damaged areas.
Apply first coat by brush, avoid thick coats and allow to
fingerprint dry, or dry enough to walk upon carefully,
60-90 minutes depending on humidity. Apply subsequent
following the above instructions. Do not allow longer than
hours to elapse between each coat. Normally 3 coats of G4
are sufficient but on very porous or
rough surfaces a
coat may be required. Rain
will affect uncured G4 so make
for covering if rain is suspected.
Allow to harden for 72 hours before washing down with clean
Then follow aquarist instructions.
Varies slightly depending on porosity. On normal porous cement
G4 Standard - 4
coats = 840 g/sq.m (for 4 coats).
Clean brushes and tools with cellulose thinners or acetone.
wash out in hot water and detergent and dry.
Please see (ponds & tanks) guide to coating concrete pools
Unit 4, Millbuck Way, Springvale Ind Est, Sandbach
Tel/Fax: (01270) 766685