PVC liners are difficult to repair satisfactorily, and will
always be prone to leaking. Butyl rubber liners are easier
to repair than PVC although they can be difficult in the area
of any folds.
A kit is available for each type of liner consisting of a
special glue and patch. Before applying the patch the area
to be repaired must be thoroughly cleaned and dried. Follow
the instructions on the kit, but make sure that the glue has
set before filling the pool with water.
To repair cracks in concrete pools, scrub clean and leave
to dry. Enlarge the crack and roughen edges to make it easier
to in-fill. Mix one part cement to two parts sand and four
parts gravel, with some added waterproofing compound, and
mix to a stiff but moist consistency. After filling the crack
leave for up to a week and apply a sealing compound. If repairs
are not effective the pool may need to be lined with a butyl
liner.