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Ardex WPM 310  :

ARDEX WPM 310 - (Shelterguard) External facade and roof membrane  

Product Description  

ARDEX WPM 310 is a tough, UV stable flexible, premixed liquid applied waterproofing membrane. It has been specifically formulated as a general purpose membrane for exposed wall and roof waterproofing. ARDEX WPM 310 can be applied as an aesthetically attractive textured or semi-smooth finish for walls or a semi-smooth uniform finish for roofs. ARDEX WPM 310 is available in a range of standard colours.  


Flexible - accommodates normal building movement.

Provides excellent UV resistance and long term protection from elements.

Excellent workability - easy, quick to apply.

Decorative - choice of colours.

Water based - safe to use, low odour and easy cleaning.  

Typical Uses  

At a dry film thickness of 0.30mm the film formed is classified as semi-permeable and suitable for substrates that have to breathe. As a decorative textured finish and waterproofing of external walls and facades. At a dry film thickness of 1.0mm the film forms a waterproof membrane. As a waterproof membrane over concrete roofs, decks. Suitable for light (service) traffic when fully reinforced and overcoated with ARDEX WPM 355 Protective Finish. High traffic areas will require a protective cement screed over the membrane.  


Do not use the product in the following situations:

Areas subject to traffic must be treated as follows:  

 Light (service) traffic - fully reinforce with ARDEX Deckweb and overcoat with ARDEX WPM 355 (Sheltercoat Protective Finish).


 Medium or Heavy traffic - apply a protective cementitious screed over the membrane to provide protection.  

Where solvent or petroleum based products could be spilled.

When rain appears imminent.

Where the surface temperature is below 10oC or greater than 35oC.

On wet surfaces that have not been sealed with ARDEX WPM 300 (HydrEpoxy 300).

Do not attempt to thin with water. For substrates or situations other than those listed, contact your ARDEX representative.  

Surface Preparation  

Ensure all surfaces are structurally sound or securely fixed and totally dry. The surface to be coated should be free from dust, oil, curing compounds and any other contaminating materials. When applying over existing coatings, ensure they are firmly bonded. Damaged or spalled concrete should be repaired with ARDEX B 34 and B 36 fairing coat and patching mortars (levelled) and surface defects including all cracks and sharp protrusions should be treated prior to the application of the membrane. Remove laitance by mechanical means and dense concrete should be mechanically roughened to open the pores of the concrete. New concrete should be left at least 28 days to cure or primed with ARDEX WPM 300 (HydrEpoxy 300). Wet, damp or new concrete substrate surfaces should be primed with ARDEX WPM 300 (HydrEpoxy 300) at 3.0 square metres per litre (0.3mm wet film thickness) and allowed to cure overnight. All surfaces, other than those sealed with ARDEX WPM 300 (HydrEpoxy 300), must be primed with ARDEX WPM 270 solvent or ARDEX WPM 265 water based primer at a coverage rate of 6 square metres per litre. ARDEX WPM 270 solvent based primer is preferred for use in external applications. Hebel block or other highly porous surfaces may need two coats. Allow the primer to dry for at least 30 minutes before applying the first coat of membrane. The primer should preferably be overcoated within the same day of application to avoid intercoat contamination.  


External Wall Membrane Application  

Apply using a nap or textured roller. Apply the coating in two coats ensuring a uniform coverage is achieved at an approximate wet film thickness of 0.3mm per coat to achieve an overall dry film thickness of 0.3mm. Allow the first coat to become hard dry (normally about 4 hours at 23oC / 50% RH) before applying the second coat.

Roof Membrane Application  

Apply the coating in two coats ensuring a uniform coverage is achieved at an approximate wet film thickness of 1.0mm per coat to achieve an overall dry film thickness of 1.0mm. Allow the first coat to become hard dry (normally about 4 hours at 23oC / 50% RH) before applying the second coat. Cold joints and mobile joints must incorporate a bond breaker and be reinforced using ARDEX Deckweb. Areas subject to light (service) traffic should be fully reinforced using ARDEX Deckweb and overcoated with ARDEX WPM 355 (Sheltercoat Protective Finish). Areas subject to heavy traffic should have a protective cementitious screed applied over the membrane.  

Surface finish  

The surface finish achieved can be varied by selection of method of application. Prior to the commencement of any project it is recommended that a sample of the finish be prepared for approval and that finish shall act as the standard.  

Surface finish profile

Roller type

Roller type  


1st coat

2nd coat

High Texture

Med. Texture

Med. Texture

Medium Texture


Med. Texture  

Low Texture

Med. Texture


Ripple Texture



The length of the roller nap will vary the profile of the texture although the nap length must suit the substrate. A 10-12mm nap produces a low surface profile while a 15-18mm nap produces a higher surface profile.  


External Wall Membrane Application  

1 x 15 litre unit will cover approximately 24 square metres in two coats at a total dry film thickness of 0.3mm.  

Roof Membrane Application  

1 x 15 litre unit will cover approximately 7 square metres in two coats at a total dry film thickness of 1.0mm. Coverage will vary depending on the condition of the surface and film thickness.  

Cleaning and Thinning  

Thinning is not necessary or recommended. Clean up with water before material has set and remove cured material with mineral turps.  



Characteristics of liquid


Form and colour


Viscous Liquid in standard colours. Special colours on request at a premium

Specific gravity

Approx. 1.3 g/cm3

Characteristics of cured membrane


Water vapour transmission  (ASTM E96) at 1.0mm

21.9 g/m2/24hrs  

Tensile strength AS1145

After 28 days dry

After 14 days UV exposure

After 2,500 hrs QUV  


2.1 MPa

3.0 MPa

5.9 MPa  

Elongation at break AS1145

After 28 days dry    

After 14 days UV exposure

After 2,500 hrs QUV 





Application details


Application method


- Textured roller, medium nap roller or brush for external wall membrane.

- Long nap roller or brush for roof membrane application.

Overcoat time

4 hrs at 23oC 50% RH

Dry through (2nd coat)

24 hrs at 23oC 50% RH

Application temperature

10 C - 35oC (surface temp)

Service temperature

0 C - 60oC

VOC content


  Safety Data  

Non-hazardous substance. Non-dangerous goods.  


Clean up spills immediately. Contain and absorb spill with sand, earth, inert material or vermiculite. Wipe up. Place in a suitable labeled container for waste disposal.  


Non combustible. Not considered to be a significant fire risk.


Waterproofing FAQ

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