Multithane UVR PU Waterproof Membrane

Recommended Primer:

1. Primeseal MC ( Moisture Cure)  2 Part Epoxy Primer for damp and existing membranes. 

2. Primseal SP (Single Pack) Solvent Based Primer

3. Prime ME (Metal Etch) Suitable primer for ferrous & non-ferrous metals.

Product Description:

Multithane UV is a UV resistant tar free, elastomeric, single pack, moisture curing liquid polyurethane, waterproofing membrane which cures to form an elastic, high tensile and seamless membrane. Multithane UV is simple to apply by brush or roller and provides the water proofing confidence that only a polyurethane can. Multithane UV solves all waterproofing problems. Multithane UV is suitable for exposed applications such a roofs, water features, gutters and flashing AS WELL AS areas to be tiled or covered such as wet areas (shower recesses and bathrooms), decks, balconies, planter boxes and more. Multithane is quick curing, usually overnight.

Product Advantages

Multithane UVR represents the highest standards in polyurethane waterproofing technology and provides the following benefits and advantages:

• Single pack (no mixing) easy to apply anti-sag technology, up to 0.75mm
• Rapid cure (within 24 hours)
• Low VOC levels. Meets the ‘Green Star’ environmental criteria.
• Permanently flexible (tests show flexibility < 500% – Class III)
• Bitumen and tar free will not stain grout or tiles.
• Self-leveling 100% bonded seamless membrane (no joints or laps)
• Suitable for immersion in water
• Formulated for wet area and under tile use.
• Safe to use
• Overcoat with Rocktuff for trafficable areas or Multithane ATC for UV protection.
• It meets the Class III High Extensibility classification of AS4654.1 2012.
• Can be installed in accordance with AS3740:2010 wet area and AS4654.2 exterior, in exposed membrane applications in conjunction with Multithane ATC.
• Does not re-emulsify once fully cured, long term performance.
• Suitable for permanent immersion and the most demanding waterproofing applications.
• Excellent chemical & hydrostatic resistance.
• Tough, Durable, and flexible.
• High strength and puncture resistant.
• Easily repaired and or maintained.
• Easy to apply.
• Odourless when cured.
• Formulated to provide long term protection.
• Inhibits mould and biological growth.
• Australian Made and a long history of Australian use.

• Multithane UVR is not designed for long term direct exposure to UV; it contains UV stabilisers for prolonged UV
protection. Where extended UV protection is required, Multithane UVR should be top coated with Multithane ATC.
• Multithane UVR is not designed as a trafficable membrane although infrequent maintenance foot-traffic is acceptable
during the construction phase.
• Multithane UVR is not suitable for direct and prolonged contact with concentrations of chlorine above 10 ppm.
• Direct tile adhesion is not advised. Please note: for direct tile bond applications seek Duram technical advice.
• Multithane UVR cannot be applied directly to damp surfaces as this will cause gassing and bubbling of the membrane.
• In exposed areas, Multithane UVR must be coated with Duram Multithane ATC or covered.
• Multithane UVR cannot be applied to slightly damp surfaces the product will not adhere. The surface must dry before
the membrane can be applied, freedom from surface water and continual dampness is essential.
• Important: Although the product incorporates UV stabilisers, UV absorbers and antioxidants to prolong its
serviceable life when exposed to sunlight, the product is an aromatic polyurethane and will slowly degrade in the
sun. It is therefore highly recommended that the product be overcoated with Multithane ATC which is an
aliphatic polyurethane formulated to withstand direct sun exposure. In combination, the system provides the
ultimate in long term waterproofing technology