ARDEX WPM 320 (Sheltercoat Retaining Wall - 1 Part)
Bitumen emulsion waterproofing membrane. Contains root inhibitors that repel
most root growth without killing the plant. Excellent adhesion - can be applied
to damp or dry substrates. Compatible with Ardex bitumen torch applied
Ardex WPM 320 (Sheltercoat Retaining Wall) is a one
component liquid applied, latex modified, bituminous elastomeric waterproofing
membrane. When cured it forms a permanently flexible waterproof lining to most
building surfaces. It is tough, economical and easy to use. Specially
formulated Ardex WPM 320 contains a premium root inhibitor that repels root
growth without killing the root. Designed primarily for areas covered or
exposed to soil, it has excellent adhesion properties, can be applied to damp
substrates. Ardex WPM 320 is waterbased, has almost no odour and is safe to
use. Where used externally, Ardex WPM 320 should be protected from Ultra Violet
- Water based: safe, low odour.
- Easily applied: single pack, high build, long pot life.
- Tough/durable: provides long term protection.
- Contains an effective root inhibitor that repels most
root growth that may damage the membrane without killing the plant.
- Excellent adhesion: can be applied to damp or dry
- Compatible with Ardex bitumen torch applied membranes.
Concrete, screeds/renders - cured for a min 28 days and
14 days respectively. Alternatively apply a barrier coat of Ardex WPM 300
(HydrEpoxy 300) as a barrier coating to fresh or wet substrates).
Masonry and concrete blocks - voids filled, sharp edges
and protrusions should be removed to give flush finish.
- Below ground tanking (not hydrostatic situations).
- Planter boxes.
- Retaining walls.
- Lapping Ardex acrylic façade membrane to Ardex bitumen
torch applied membranes.
The product should not be used under tiles. Membranes
containing bitumen can cause discolouration and debonding of tiled surfaces
Ardex WPM 320 will not resist root growth from large
trees or other plants placed in close proximity. ARDEX WPM 320 coated surfaces
must not be backfilled until the coating is totally dry and cured, as the
coating will fail to cure altogether. Do not apply Ardex WPM 320 if the surface
temperature is below 10oC or above 35oC. Do not apply if rain is imminent. Do
not leave membrane exposed to direct UV rays for more than 3 weeks. Do not use
solvent-based adhesive or sealers on top of membrane.
BASIC APPLICATION INSTRUCTIONS
The surface to be coated should be clean, sound and free
from oils, greases and flaking paint. New concrete should be cured for 28 days
(or a barrier coat of Ardex WPM 300 (HydrEpoxy 300) applied) prior to
application of membrane and the surface pores must be open. All cracks or holes
exceeding 2mm are to be repaired before application commences. Surface may be
slightly damp but must be free from seeping moisture. Surface to which the
coating is to be applied should be smooth with no sharp edges to ensure a
uniform film thickness is acheived.
Ardex WPM 320 is self-priming on most surfaces. Wet or
freshly placed concrete surfaces should be sealed with Ardex WPM 300 (HydrEpoxy
300) in one coat at a coverage rate of 3.0 square metres per litre. Porous
substrates such as aerated concrete should be primed with Ardex WPM 320 mixed
with 50% water.
Apply a bead of elastomeric sealant to all expansion
joints, corners, wall to floor/footing junctions and where movement will occur.
Apply 2 coats of Ardex WPM 320 at a total rate of 2.0
litres per m2, and ensure full coverage with brush or roller. A reinforcing
fabric should be used between coats in all vertical and horizontal corners or
other possible movement joints. Ardex WPM 320 may be fully reinforced if
required such as over concrete block walls. When dry, check for pinholes and
rectify if necessary.
Once the membrane has cured, and prior to backfilling a
suitable protection material must be applied over the membrane. Ardex
Protection Boards or Geotextile Fabric covered drainage cell are recommended.
The protection boards should be installed using duct tape or other suitable
means without puncturing the membrane.
COVERAGE 1 x 20 litre unit will cover approximately 10m2 after two coats (recommended total dry film thickness minimum 1.0mm).
Allow 1-2 hours between coats, unless a reinforcement
material is used between coats. In this case, the second coat can be applied
immediately after the mat has been installed in the wet first coat. The
membrane is fully dry in 24 hours, after which it should be protected with
ARDEX Protection Boards or Geotextile Fabric coated drainage cell. Backfilling
should not be carried out until full cure is achieved after 7 days.
Ardex WPM 320 is non-hazardous and non-dangerous. Do not
breathe gas/fumes/vapour/spray. Avoid contact with skin, wear eye/face
protection. Use only in well ventilated areas. Keep container tightly closed
and in a well ventilated place. In case of contact with eyes, rinse with plenty
of water.In event of irritation seek medical advice.
ADDITIONAL INFORMATION IS LISTED IN THE MATERIAL SAFETY
STORAGE Ardex WPM 320 is sold in 20 litre plastic Pails.
Shelf life is 12 months when stored in the original unopened container, in a
dry place at 25oC. Do not store in
direct sunlight. Replace lid tightly after use.
CLEAN UP and DISPOSAL
Clean all equipment in fresh water immediately after use.
Remove cured material with mineral turpentine or white spirits. Dispose of
containers in compliance with all relevant local authorities, state, and
TECHNICAL PERFORMANCE DATA
Appearance and odour: Thick black fluid, slight odour
Specific gravity: Approx. 1.0kg/L
Application temperature: 10oC - 35oC
Drying time: (@ 23oC,
50% RH) Recoat 2 - 4 hours Hard dry 24 - 48 hours
Tensile strength: 6 days @ 23oC / 50% RH plus 24 hrs at 70oC 1.8MPa
Elongation of break: 6 days @ 23
50% RH plus 24 hrs at 70
C 220% VOC content 45g/L