F. Ball Subfloor Preparation Brochure - Flipbook - Page 13
01538 361 633 | f-ball.com
Waterproof Surface Membranes
Asphalt
Membranes such as Stopgap F77 can be overcoated
with smoothing compounds or certain adhesives.
When applying a smoothing compound onto an
epoxy waterproof surface membrane, the surface
should be primed with neat Stopgap P141 and
allowed to dry before proceeding with the compound.
Stopgap 1200 and Stopgap 1500 can be applied to
Stopgap F77 without priming within 24 hours, other
compounds need to be primed first. All compounds
can be applied direct to Stopgap F78 within 12 hours
without priming.
The asphalt should be flooring grade, comply with
the requirements of BS 8204-5 and be the correct
grade for its service condition. Providing the flooring
grade asphalt is in good condition, sound, strong,
has not suffered rutting or any sign of softening and
is free from any form of contamination, the surface
should be cleaned with Styccoclean C140, rinsed
with clean water and allowed to dry. The surface
should then be primed with neat Stopgap P141 and
allowed to dry followed by the application of 3mm of
the appropriate Stopgap floor smoothing compound.
Adhesives such as Styccobond F40, F41, F46
and F47 can be applied direct to Stopgap epoxy
waterproof surface membranes, although when
installing resilient floor coverings, we would
recommend applying a smoothing compound
to provide a sufficiently smooth surface.
Stopgap 1200 or Stopgap 1500 can be applied direct
without the need to prime.
Please refer to the data sheets or F. Ball Technical
Service Department for further information on
these products.
Please note the thickness of the floor smoothing compound should
be kept to a minimum and must not exceed 6mm.
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