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Volclay Waterstop RX
Description

Waterstop-RX is an active bentonite / butyl-rubber based waterstop designed to stop water infiltration through cast-in-place concrete construction joints by expanding upon contact with water to form a positive seal against the concrete.

The key to the effectiveness of Waterstop-RX is its 75% sodium bentonite content which provides superior expansion to seal cracks and fill small voids. Waterstop-RX is a reliable and cost-effective solution to preventing water infiltration through concrete joints.

Waterstop-RX offers a low cost opportunity to enhance the performance of a sound external waterproofing system, by sealing the areas of highest probability of water infiltration through the concrete, and should therefore be implemented as part of the waterproofing design.

Key Features

WATERSTOP-RX is available in multiple size, shapes and configurations to match the right construction environments and conditions. We offer four different sizes and profiles are available to match your specific project needs: RX 101T, RX 102, RX 101 DH and RX 103 DH.

  • Waterstop-RX 101T - Trapezoidal shape measuring 31 x 12 mm, the RX-101T distributes the expansion pressures over a greater area and the reinforcing scrim provides additional product stability when concrete is placed. Best used for shotcrete applications requiring 75 mm of concrete coverage.
  • Waterstop-RX 102 - A half-circle (crescent) shape measuring 19 x 9 mm. The crescent shape of RX 102 distributes the expansive pressure more evenly reducing the risk of a blowout. Ideal for small thin areas as only requires 50mm of concrete coverage.
  • Waterstop-RX 101 DH - The DH stands for ‘delayed hydration’ meaning the waterstop can handle some pre-hydration prior to encapsulation making it ideal for situations where the product may be exposed to the elements for an extended period of time before encapsulation, on wet areas, hard to reach places and where replacement may be difficult. RX 101 DH is produced in a rectangular shape measuring 20 x 30 mm requiring 75 mm of concrete coverage.
  • Waterstop- RX 103 DH - The Delayed Hydration means the waterstop can handle some pre-hydration prior to encapsulation making it ideal for situations where the product may be exposed to the elements for an extended period of time before encapsulation, on wet areas, hard to reach places and where replacement may be difficult. RX 103 DH is produced in a rectangular shape measuring 20 x 10 mm requiring 50 mm of concrete coverage.

Benefits:

  • Easy to install — Waterstop-RX can be installed by one person
  • Positive seal — Waterstop-RX swells and forms a positive seal
  • No special transition parts — Waterstop-RX does not require special cross, corner, or 'L' parts to transition from horizontal to vertical
  • Safe — Waterstop-RX is non-toxic and requires no special handling
  • Flexible — Waterstop-RX has excellent flexibility so it can be installed around irregular penetrations like steel H-Piles
  • New-to-existing concrete — Installs without chipping or saw-cutting existing concrete
Scope of Use

Applications include both vertical and horizontal non-moving concrete construction joints, new to existing concrete construction, irregular surfaces, and around through-wall penetrations, such as plumbing and utility pipes.

Additionally Waterstop-RX can seal around concrete pilings and steel H-piles passing through the slab. Waterstop-RX works in both continuous hydro-static and intermittent hydro-static conditions.

Statement of Building Code Compliance
  • B2 DURABILITY: Performance B2.3.1 (a) not less than 50 years.
  • E2 EXTERNAL MOISTURE: Performance E2.3.3.
  • F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. The Volclay Waterproofing System meets this requirement and will not present a health hazard to people.
Other Performance Attributes
  • BBA Appraised
B2 Durability compliant
Durability
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
BRANZ Appraised
BRANZ Appraised
Documents
Technical/Design Manual
BRANZ Appraisal 507

507 [2019] (amended 2022)

Waterstop RX Brochure

Allco Waterproofing Solutions specialise in quality waterproofing products supplying Volclay, Casali, Hydrotech and JM TPO.

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