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ARDEX WeldTec Internal Wet-Area Tiling System
Description

The ARDEX Wet-Area Tiling System features the new WeldTec Undertile Waterproofing Membrane WPM 750 for strong, secure waterproofing in wet areas. ARDEX WPM 750 is a fleece-lined waterproofing sheet membrane specially formulated for the direct adhesion of tiled surfaces. ARDEX WPM 750 is heat-welded at laps and seams to create a superior bond, consistent gauge and allow a quick installation. 

System Products:

  • Screed: ARDEX A 48
  • Levelling Compound: ARDEX K 005
  • Patching Compound: ARDEX A 46
  • Primer: ARDEX Multiprime
  • Membrane Adhesive: ARDEX AF 620
  • Waterproofing: ARDEX WPM 750
  • Tile Adhesive: ARDEX X 18
  • Tile Grout: BAL Micromax2
Key Features
  • Manufactured in New Zealand
  • BRANZ Appraised (No. 727)
  • Heat-welded laps and seams
  • Fleece-lined for greater adhesion
  • Begin tiling after 60 minutes
  • Thin and consistent membrane thickness
  • Suitable for use with underfloor heating systems
  • Excellent flexibility - no requirement for fillet or bond breakers
  • Excellent resistance to tearing, cracking, bubbling, and absorption
  • Fully compatible with ARDEX tiling systems
Homestar / Green Star (Envirospec) Compliant
Homestar / Green Star
NZ Made
NZ Made
Scope of Use
  • Internal
  • Wall or floor
  • Ideal for wet areas, eg bathrooms, kitchens

ARDEX Undertile Sheet Membrane (WPM 750 and WPM 1000) has been appraised for use as a waterproofing membrane for the internal wet areas of buildings, within the following scope: 

  • On floor substrates of concrete, plywood, compressed fibre cement sheet and fibre cement sheet tile underlay, and on wall substrates of concrete, concrete masonry, wet area fibre cement sheet lining systems and wet area plasterboard lining systems; and,
  • When protected from physical damage by ceramic or stone tile finishes; and,
  • Where floors are designed and constructed such that deflections do not exceed 1/360th of the span. 2.2
Limitations on Use
  • ARDEX WPM 750 is compatible with undertile heating systems. Contact ARDEX Technical Services for more information

ARDEX Undertile Sheet Membrane (WPM 750 and WPM 1000) has been appraised for use as a waterproofing membrane for the internal wet areas of buildings, within the following scope:

  • On floor substrates of concrete, plywood, compressed fibre cement sheet and fibre cement sheet tile underlay, and on wall substrates of concrete, concrete masonry, wet area fibre cement sheet lining systems and wet area plasterboard lining systems
  • When protected from physical damage by ceramic or stone tile finishes
  • Where floors are designed and constructed such that deflections do not exceed 1/360th of the span. 2.2
Statement of Building Code Compliance

ARDEX WPM 750, provided it is used, installed and maintained in accordance with the statements and conditions of the ARDEX WPM 750 Datasheet, will meet the following conditions of the NZBC:

  • Clause B2 Durability: Performance B2.3.1 (b) 15 years
  • Clause E3 Internal Moisture: Performance E.3.3.6
  • Clause F2 Hazardous Building Materials: Performance F2.3.1
In-Service History

ARDEX WPM 750 has a history of use within Australia and New Zealand since the product's creation. ARDEX WPM 750 has been a favourite for high-end homes — especially in wetrooms, or installations requiring underfloor heating.

ARDEX WPM 750 has also been specified in a small amount of commercial projects, one being the new rebuild of the Wellington Airport Rydges Hotel.

Other Performance Attributes
  • 20-year product warranty when installed by an ARDEX Approved Applicator
  • Manufactured in New Zealand 
B2 Durability compliant
Durability
E3 Internal Moisture compliant
Internal Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
BRANZ Appraised
BRANZ Appraised
Documents
Data Sheet: Bal Micromax2
Product Info: ARDEX A 46
Product Info: ARDEX AF 620
Product Info: ARDEX EG 15
Product Info: ARDEX K 005
Product Info: ARDEX Multiprime
Product Info: ARDEX WPM 750
Product Info: ARDEX X 18
WeldTec WPM 750 Datasheet
Independent Appraisal (BRANZ)
Maintenance Instructions
Warranty
Substrate Specification
Brochure: ARDEX WeldTec
ARDEX Company Profile
Case Study: Rydges Hotel Wellington

ARDEX New Zealand supply and manufacture a range of quality construction materials, including products for levelling floors; external and internal waterproofing; and fixing natural stone and tiles.

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