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Undertile Wateproofing Membrane:

 

WPM 002 (Superflex Two Part) is a tough, fast drying two component waterproofing membrane specifically designed for use under tiles. The product has been uniquely formulated with synthetic microfibers to increase its strength and eliminate the need for a separate reinforcement mat. WPM 002 is based on the most advanced acrylic polymer technology, and is totally resistant to re-emulsification.

 

WPM 002 is flexible, low in odour, and is fully compatible with polymer modified tile adhesives. Wrimco WPM 002 is one of the fastest drying acrylic membranes on the market - normally ready to tile in 16 - 24 hours @ 23 C. WPM 002 meets the Green Building Council of Australia Green Star IEQ-13 requirements for Architectural Sealant when tested in accordance with SCAQMD Method 304-91 Determination of Volatile Organic Compounds (VOC) in Various Materials as referenced by South Coast Air Quality Management Division (SCAQMD) Rule 1168.

 

FEATURES/BENEFITS

 

Fast drying Wrimco WPM 002 can be tiled over in 16 - 24 hours, or 4 hours @ 23 C / 50% RH in non critical areas*.

 

Features benefits

 

Fibre reinforced: Excellent strength, eliminates need for reinforcing mat.

Flexible: Accommodates normal building movement.

Advanced acrylic: Will not re-emulsify.

Designed for tiling: Fully compatible with our tile system adhesives.

Water based, low odour and easy cleaning for undertile waterproofing in shower recesses.

Conforms to the requirements of AS/NZ 4858:2004 Wet Area Membranes (Ref: CSIRO Report 3879).

*Critical areas include areas where the membrane is applied at greater than 0.5mm or over impermeable substances such as over bond breakers or incorporating other reinforcement. Longer drying times are necessary

in these areas.

 

APPLICATION RANGE

 

Performance levels: Commercial and residential.

 

Location

 

Internal and external wet areas, balconies, decks, and other areas that will be tiled or otherwise protected from regular foot traffic.

 

Surfaces

 

Walls and floors.

 

Substrates

 

Concrete:

Cured for min. 28 days or sealed when set with one coat HydrEpoxy WPM 300 at a coverage rate of 3.0 square metres per litre and allowed to cure overnight. Wet concrete should be allowed to dry thoroughly or sealed with one coat of HydrEpoxy WPM 300 as above.

 

Renders and screeds:

Cured for min. 7 days or sealed when set with one coat  HydrEpoxy WPM 300 at a coverage rate of 3.0 square metres per litre and allowed to cure overnight. Wet render should be allowed to dry thoroughly or sealed with one coat of HydrEpoxy WPM 300 as above.

 

Fibre cement: Wet area grade only.

 

Plasterboard: Wet area grade only.

 

Plywood: Structural plywood (PAA branded) or marine grade or other wet area grade only. Not recommended for external use.

 

Particleboard: Wet area grade, internal use only. Not recommended for external use.

 

Permanent Immersion: In conditions of permanent immersion, it is recommended that WPM 002 must be covered with tiles for full immersion applications.

 

SPECIFICATION CLAUSE

 

WPM 002 (Superflex Two Part) The waterproofing membrane shall be WPM 002, a two component cementitious acrylic modified fibre reinforced membrane formulated to provide a tough, long lasting water barrier under tiling systems.

 

PACKAGING

 

Two component: 20kg (approx 20 litres) liquid pail/ 2 x 10kg bags powder.

 

SHELF LIFE

 

12 months when stored in the original unopened packaging, in a dry place at 23 C. Do not store in direct sunlight. Replace lid tightly after use. Use remaining contents from part used containers within 3 months.

 

TABLE 1

 

 

Thickness per coat

 

Total dry film

thickness (2 coats)

Theoretical coverage

Per unit

 

Dry film

Wet film

 

Per coat

For 2 coats

 

Floors

0.6mm

0.9mm

1.2mm

32m2

16m2

40kg kit

Walls

0.4mm

0.6mm

0.8mm

48m2

24m2

40kg kit

 

COVERAGE

 

Two coats are recommended for an effective waterproof membrane. Coverage will vary depending on the porosity of the surface. One 40kg kit will cover approximately 16 - 24m2 (based on two coats) depending on area requirements between wall and floor surfaces to be treated.

 

DRYING TIMES

 

Curing time will vary depending on temperature and humidity.

 

Recoat time

 

1 - 2 hours (23C / 50% RH) between first and second coats. Alternatively, if a woven cloth reinforcement mat is used in corners between coats then the second coat can be applied whilst the first coat is still wet.

 

Dry through

 

The slowest drying areas are those where the membrane has been applied over a silicone bond breaker, eg. Wall and floor junctions. The membrane cannot be tiled over until these critical areas are completely dry.

 

WPM 002 membrane is totally dry in 16 hours at 23 C / 50% RH but can take up to 24 hours at 10 C / 50% RH in corners or for thick films. In areas where bond breakers or additional reinforcement are not used, ARDEX WPM 002 can be tiled over after 4 hours at 23 C / 50% RH.

 

Fully cured

 

The shower should not be used until the membrane has reached its full strength. Normally ARDEX WPM 002 membranes are fully cured after 3 days at 23 C, or after 5 days at 10 C. Drying times will vary depending on humidity, surface temperature and surface porosity. Do not apply on substrates where the surface

temperature is below 10 C or above 35 C.

 

CLEANING

 

Wash hands, brushes, rollers, etc, with water while the membrane is still fresh. Remove cured material with mineral turpentine.

 

SAFETY PRECAUTIONS

 

Do not use the product in the following situations:

 

Areas subject to negative hydrostatic pressure or rising damp, unless treated with Wrimco HydrEpoxy WPM 300. Where the substrate is wet - wet surfaces can be sealed with one coat of ARDEX HydrEpoxy WPM 300 at a coverage rate of 3.0 square metres per litre and allowed to cure overnight. Where rain is imminent. Where the membrane will be left exposed and subjected to regular foot traffic. On glazed, glass or other totally impervious surfaces (eg. areas pre-treated with water repellants). Where the surface temperature is below 10 C or greater than 35 C. All floor areas must have adequate falls either built into the substrate or achieved with a sand/cement screed prior to application of the Wrimco WPM 002.

 

SAFETY DATA

 

WPM 002 Part A is non-hazardous. It may produce discomfort of the respiratory system. It should not be swallowed or inhaled. Avoid contact with skin and wear eye/face protection. In case of contact with eyes Wrimco WPM 002 Part B is hazardous. It may cause burns and serious damage to eyes. Do not breathe dust and avoid contact with eyes. Wear dust masks, goggles and gloves when handling. Keep container locked up and in a well ventilated place.

 

APPLICATION

 

Apply WPM 002 by brush or roller. A medium nap (12 - 15mm pile) paint roller is recommended. New rollers should be dampened with water before being used for the first time. For best results with a paint brush use a good quality, 50mm long bristle variety. To achieve the required dry film thickness per coat

application must consist of laying the product onto the surface and light finish the surface. Do not try to apply in the same manner as a building paint. A conventional building paint is normally applied at 25 - 40 micrometers wet film thickness while WPM 002 needs to be applied at between 0.6 and 0.9 millimetres per coat depending on product and application (Refer Table 1).

 

Critical areas:

INTERNAL WET AREAS

 

1. Construction should be in accordance with Australian 3740 - 2004 Waterproofing of wet areas within residential buildings.

2. All render and tile bed requirements should be completed before application of the membrane and tiles or other floor coverings should be direct bonded to the membrane.

3. Ensure wall and floor sheets are installed as per sheet manufacturer's recommendations.

4. Ensure suitable brick/concrete hobs are used (do not use timber), and that the top of the hob does not slope outwards.

5. Ensure that falls to the waste are min 1:60 (ie. approx. 30mm in 2m) before waterproofing. Ensure outlet pipes are fixed securely and that the waste or drainage flanges are recessed into the floor.

 

6. Avoid sheet joints in shower recess floor. Ensure that sheets are securely fixed to the wall at the bottom edge, and sheet joints are sealed with a neutral cure

silicone sealant spread approximately 8mm on either side of the joint.

 

7. Treat nail and screw holes with neutral cure silicone sealant.

 

8. Seal the perimeters of taps, shower outlets and waste outlets with neutral cure silicone sealant.

 

9. Apply a bead of neutral cure silicone sealant to all horizontal and vertical corners.

 

10. Apply a bead of neutral cure silicone sealant to the junction of the hob or angle and walls.

 

11. Waste outlets shall incorporate a puddle flange or similar in accordance with AS3740 and the top surface shall be set flush with the surface to which the membrane is to be applied. A bead of neutral cure silicone shall be applied across the intersection of the puddle flange and the screed/floor.

 

12. Apply the membrane to the entire shower recess floor and down into waste or drainage flange. Apply the membrane over the hob and at least 100mm beyond

the outside edge of the hob (ideally to entire wet area floor).

 

13. Plastic (eg. PVC) fittings should be primed with a solvent based plumbers primer. Prime metal surfaces with a suitable metal primer.

 

14. Apply the membrane 1800mm up the walls or 80mm above the height of the shower rose within the shower recess.

 

15. Install the shower screen to inside edge of the hob.

 

BALCONIES AND DECKS

 

1. Ensure that the deck is constructed with falls to edge/drains of min 1:100 (ie. 20mm in 2m) or else achieve the fall with a sand/cement screed.

 

2. Ensure suitable flashing is installed, ideally prior to the installation of the balcony screen/sliding door.

 

3. Treat any sheet joints with a neutral cure silicone prior to waterproofing.

 

4. Prepare and seal all wall/floor junctions with a bead of neutral cure silicone.

 

5. Apply the membrane as far up underneath the screen door flashing as possible (ideally waterproof prior to installing door).

 

6. Where possible, apply the membrane prior to building divisional walls.

 

7. Apply the membrane to the entire balcony floor and at least 100mm up the wall above the top surface of the finished tiles and finished below the wall drainage vents.

 

8. Apply the membrane to the top of the parapets and divisional walls, or else install suitable metal capping.

 

9. Apply the membrane down over the front edge of the balcony onto the drip rail.

 

10. Carefully seal any gaps around balcony penetrations prior to applying the membrane.

 

11. Apply the membrane down into outlets and drains, ensuring excess material is removed.

 

12. Ensure all weep holes are above the membrane application area.

 

APPLICATION NOTES Surface preparation

 

Ensure all surfaces are structurally sound and totally dry. The pores of concrete surfaces should be open (absorbent surface). All sheet substrates must be

securely fixed in accordance with the manufacturers instructions.

 

Falls to outlets of at least 1:60 or approx. 30mm in 2m (wet areas) or 1:100 externally, must be achieved prior to tiling.

 

The surface to be coated should be free from dust, oil, paint, curing compounds and any other contaminating materials.

 

Damaged concrete should be repaired (leveled) and surface defects including all cracks and sharp protrusions should be treated prior to the application

of the membrane.

 

Remove laitance on concrete or screeds by mechanical means. Highly dense (>40MPa) or steel trowelled concrete should be roughened by suitable mechanical means (shot blasting, grinding, etc).

 

Priming

 

The primer is a critical part of the waterproofing system. Apply one coat of WPM 265 water based primer by brush or roller to all areas to be waterproofed including the floor waste. Allow the primer to be completely dry prior to the application of the WPM 002 membrane. This will take around 20 - 30 minutes depending upon weather conditions and porosity of the substrate.

 

Coverage

 

is approximately 6 m2 per litre. Plastic (eg. PVC) pipes should be primed with a solvent based plumbers pink primer. Prime metal surfaces with a suitable metal primer such as epoxy polyamide primer.

 

GENERAL APPLICATION

 

Crack preparation

 

Cracks <2mm:

 

Clean and remove any loose particles in the crack. Prime the crack and adjacent area carefully with WPM 265 water based primer and allow to dry before applying two coats of WPM 002 membrane, in a band at least 200 mm wide equidistantly across the crack, along the length of the crack.

 

Cracks 2 - 6mm:

 

(Refer Fig.3) prepare and prime the crack as above. Apply a bead of neutral cure silicone into the crack and extend it 6mm either side. Apply a 300mm wide band of WPM 002 equidistantly across the crack along the entire length of the crack. Place a 190 mm wide band of Deckweb woven cloth reinforcement over the applied membrane. Thoroughly wet out the cloth and remove all creases in, or air pockets under the mat. Immediately apply a second coat to completely fill the mat.

 

Movement / construction joints

Movement joints (<6mm)

 

Clean and prime the joint before filling it with a bead of neutral cure silicone and extending it 6mm each side of joint. Apply a 300mm wide band of WPM 002 (Superflex Two Part) equidistantly across the crack along the entire length of the crack. Place a 190mm wide band of Wrimco Deckweb woven cloth reinforcement over the applied membrane. Thoroughly wet out the cloth and remove all creases in, or air pockets under the mat. Immediately apply a second coat to completely fill the mat.

 

Construction joints (>6mm)

 

Use the same procedure as above, but replace the reinforcing mat with 120mm of Coving Bandage. Note: if tiling, movement joints should be taken to the surface of the tiles. Fill the joints between the tiles immediately above the movement joints with an appropriate joint sealant.

 

Corners and coving areas

 

After priming with Wrimco WPM 265 water based primer and allowing it to dry, apply a generous bead (16mm) of neutral cure silicone sealant in coving areas and corners. Smooth over the silicone so that it extends 8mm up the wall and 8mm over the floor and allow to touch dry. Apply a first coat of Wrimco WPM 002 to the area and allow the membrane to dry.

 

Apply a second coat ensuring that excess product is removed from the junction (the final dry film thickness should be around 1.2mm) Alternatively, if a woven cloth reinforcement mat is used between coats then the second coat can be applied as soon as the mat is fully bedded into the first coat.

 

WALL/FLOOR JUNCTION

 

After priming with Wrimco WPM 265 water based primer and allowing to dry, apply a generous bead (16mm) of neutral cure silicone sealant to seal all junctions between two substrates. Smooth over the silicone so that it extends 8mm up the wall and 8mm over the floor and allow to touch dry. Place a 190mm wide band of Deckweb woven cloth reinforcement over the applied membrane. Thoroughly wet out the cloth and remove all creases in, or air pockets under the mat. Immediately apply a second coat to completely fill the mat. The WPM 002 should be applied to at least 150mm up the wall surfaces as per the recommendations for the application of WPM 002 to floors.

Walls

 

Two coats of WPM 002 are required to achieve a minimum total dry film thickness of 0.8mm. After priming with WPM 265 water based primer and allowing to dry, apply two coats of Wrimco WPM 002 (to achieve a minimum dry film thickness of 0.8mm) in two opposite directions. Wall sheet joints should be treated with a neutral cure silicone, PVC duct tape or base jointing compound. In balcony situations take the membrane up underneath any existing cover flashing or install appropriate flashing. Allow the first coat to dry before applying the second coat.

 

Floors

 

Two coats of WPM 002 are required to achieve a minimum total dry film thickness of 1.2mm. The membrane should be extended at least 100mm up all perimeter walls. Prime the surface with WPM 265 water based primer and allow to dry. Apply the first coat over the primed surface and allow

it to dry (1 - 2 hours at 23 C, 50% RH) before applying a second coat in an opposite direction. In shower recesses a drainage flange must be installed on all timber/sheeted floors, and are strongly recommended on all other substrates. Where possible rebate the flange into the floor. Seal the perimeter of the flange with neutral cure silicone sealant. If a flange is not installed the membrane must be applied down into the pipe. (Refer Fig.5) Allow the membrane to dry completely before tiling. Refer drying times above.

 

Waste outlet

 

Prime the surface with WPM 265 water based primer and allow to dry. Surfaces of outlet flange must be primed with an appropriate primer. Apply WPM 002 (Superflex Two Part) over the adjacent floor surface extending down into the waste outlet pipe overlapping the pipe surfaces by at least 30mm. Place Wrimco Deckweb woven cloth reinforcement over the applied membrane. Thoroughly wet out the cloth and remove all creases in, or air pockets under the mat. Immediately apply a second coat to completely fill the mat.

 

Balcony penetrations

 

All upstands are to be mechanically fixed through the membrane, which must be fabricated with a base plate flange. Prime the metal with an appropriate metal primer such as an epoxy polyamide primer and allow to dry. Apply a 10mm bead of neutral cure silicone around the perimeter of the penetration. Apply the first coat of WPM 002 on the substrate and the flanged metal. Allow first coat to dry before applying a second coat ensuring a finished dry film thickness of no less than 1.2mm is achieved. Place a suitable flashing collar around the penetration sealing it with a suitable sealant.

 

Tiling systems

 

It is advisable to conduct a flood test of the waterproofed areas once the membrane has cured (normally after 48 hours), and before the tiling commences. A broad range of tile adhesives can be used over Superflex membranes. Contact Wrimco or your nearest Wrimco stockist for advice on the most suitable system.

 

QUALITY PRODUCT

 

WPM 002 is manufactured and tested to Wrimco procedures which are maintained in accordance with Quality System Standard ISO 9001.

 

USER NOTES

 

The technical details and recommendations contained in this data sheet are given in good faith and represent the best of our knowledge and experience at the time of printing. It is the responsibility of the user to ensure that the product is used in accordance with Wrimco instructions and in applications for which they are intended.

 

WPM 002 TECHNICAL DATA

 

Characteristics of components

Form and colour

 

Liquid: white, medium viscosity

Powder: off white

Characteristics of mixed product

Mixing ratio

1:1 by weight

SG of mixed product

1.4kg/litre

Colour

light grey/green

Characteristics of cured membrane

Shore A hardness ASTM D2240

dry film

85 - 90

wet film

75 - 80

Tensile strength

7 days dry AS1145

1.7 MPa

Full cure 28 days

2.9 MPa

Elongation at break

7 days dry AS1145

332%

VOC content

25g/L

NOTE: Most of the tests have been carried out in the laboratory under standard conditions

 

 

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