CONCRETE FLOOR SLAB EXPANSION JOINT
casting a large horizontal expanse of concrete expansion
jointing is needed particularly where the concrete
interfaces with perimeter walls and concrete columns.
Traditionally soft board has been used for this
application. Soft board, however, has a number of
disadvantages as it swells when in contact with
water, is difficult to cut with precision and deteriorates
and becomes unsightly over time.
Expanded polystyrene however has none of this problems
and thus makes an ideal expansion jointing material.
is a range of pre-cut sheets of expanded polystyrene
10mm thick x 1,2m long of varying heights - 170mm,
255mm and 340mm to suit different standard slab
Polyjoint is supplied in standard packs of 122
on slab depth and size of slab to be cast pre-determine
quantity and size of Polyjoint required.
Place Polyjoint where required and if needed to
be held in place before casting the slab use an
EPS adhesive to glue the Polyjoint to the supporting
Around column bases wrap the Polyjoint around the
column and hold it in place with masking tape.
pre-cut Polyjoint is supplied precut to the slab
depth to be cast so no cutting is required on site.
Expanded polystyrene does not expand or deteriorate
when wet so no excessive jointing compounds are
needed to seal expansion joints.
Polyjoint can be readily cut with a knife or hand
saw to fit the exact dimensions of the slab to be
Polyjoint will not deteriorate over time leading
to unsightly gaps in the concrete.
Packs of Polyjoint are lightweight and easy to transport
Easy to fix
The Polyjoint panels can be glued in place with
an expanded polystyrene adhesive or taped around
columns to hold them in place prior to pouring the
Fire retardant: Yes
Sheet sizes: 1,22 meters long x 10mm thick x 170/255/340mm
Polyjoint is supplied in corrugated cartons containing
100 x 1,22 pieces = 122 meters.
PJ170 = Polyjoint 170mm high
PJ255 = Polyjoint 255mm high
PJ340 = Polyjoint 340mm high