Below Grade Positive Side
WPM 188 (Shelterbit Garden Tanking Membrane) 3.0mm SBS
bitumen membrane Positive vapour barrier Excellent resistance to pollutants and
aging Good elongation and flexibility For waterproofing planter boxes, garden
beds, roof gardens and flower beds Contains root inhibitor - stops roots from
plants damaging the membrane High flexibility during application at sub zero
temperatures with no physical strain
WPM 188 is an S.B.S. (Styrene Butadine Styrene) torch
applied modified bitumen waterproofing membrane, consisting of a specially
formulated bituminous compound of distilled asphalt modified with selected high
grade visco-elastic polymers and reinforced with a high quality combined
reinforcement (fibreglass and polyester) and treated with preventive chemicals
to stop roots from plants damaging the membrane. The exceptional elongation
properties of SBS combined with the strength and dimensional stability of the
reinforcing, provides an excellent waterproofing membrane for new and existing
constructions. WPM 188 is coated with either a sanded or talc top surface
finish, while the bottom surface is embossed and protected by a heat sensitive
polythene film. This type of finish for the lower surface has been chosen for
two specific purposes.
To act as a temperature gauge during application.
When the film melts it shows that the compound is at the correct temperature.
The embossing is to allow the gases to rapidly escape when heated to its
correct installation temperature avoiding possible problems of bubbling and
FEATURES AND BENEFITS
Positive vapour barrier.
Excellent resistance to pollutants and aging.
High flexibility during application at sub zero
temperature with no physical strain.
Maintains shape stability at high temperatures.
High resistance to perforation.
Resists root growth ingress into both the membrane and
Good elongation and flexibility.
Heat welded laps provide an homogenous joint.
WPM 188 has been especially formulated for the
Green covered civil works etc.
WPM 188 is used as a single layer or multi layer tanking
membrane in horizontal or vertical applications, also for waterproofing
balconies, terraces and flat roofs.
The application of WPM 188 should be carried out by an
accredited applicator. Installation shall be strictly in accordance with the
manufacturer's recommendations. All surfaces to which the Shelterbit systems
are installed must be properly prepared prior to installation. All surfaces
must be clean, dry, smooth, and free of sharp edges, fines, loose or foreign
materials, oil, grease and other materials which may damage the membrane. New
concrete must be cured a minimum of 28 days prior to the
WPM 188 Apply to all surfaces one coat of WPM 240
Bituminous Primer at a coverage rate of 5 square metres per litre and allow to
dry thoroughly. A layer of WPM 188 shall be installed over all positive side
surfaces by LPG torch application techniques by an accredited applicator. The WPM
188 must be fully bonded to the prepared substrate with side laps of 7.5cm and
end laps of 10cm. The membrane must be detailed in accordance with recommendations.
Overlaps shall be sealed by torch. The WPM 188 membrane shall extend to at
least 100mm above the backfill level. The top edge of the membrane shall be
finished using an Pressure Seal to prevent ingress of water behind the membrane.
After all membranes have been installed they shall be protected from mechanical
damage by placing Protection Board against the membrane before backfilling. The
board shall be fixed using PVC Duct Tape, do not use mechanical fixing that
will puncture or penetrate the membrane.
WPM 188 is hazardous; non-dangerous goods. However during
installation, exercise caution when working with open flame. Examine all
surfaces to which the flame has been applied for smouldering or burning
conditions. Do not use open flame on or near highly combustible materials.
Follow all local fire codes.
All rolls of WPM 188 should be stored in a covered area
protected against sunlight and UV radiation. Rolls should be stored in a
vertical position on a smooth floor so as not to damage the
Roll size: 1m x 10m
Roll weight: Approximately 35kg
Rolls per pallet: 28
The Technical Data shown below are the average results of
the Tests, Measurements and Trials, carried out on WPM 188 Waterproofing
Aeric mass: 3.5 kg/m2
Heat stability: 90oC
Cold flexibility: -20oC
Tensile strength Ultimate longitudinal: 720 N/5cm,
Ultimate transverse: 420 N/5cm
Elongation at break: Longitudinal 40%, Transverse 45%
Tear resistance: Longitudinal: 130 N, Transverse: 140 N
Reinforcement: 180 g.s.m.
Surface finishes: Lower torch film, Top torch film
Note 1) Lower surface; the surface which is applied to
the structure being waterproofed.
Note 2) Top surface; exposed to underside of