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WR Meadows WATERSTOP EC PLUS 1/2 Inch x 1 Inch x 16 ft 8 Inch Roll, Carton of 6

WR Meadows WATERSTOP EC PLUS is a sodium bentonite and hydrophilic rubber waterstop for static construction joints, supplied as a carton of six 1/2 Inch x 1 Inch x 16 ft 8 Inch rolls (100 LF). It is intended for joints that see continuous wetting and drying cycles.

  • Concrete must cover 2 Inch all around the waterstop
  • Set in a bead of CLAY-TITE MASTIC and nail 12 Inch apart
  • Resists 231 ft of hydrostatic head (ASTM D5385)
$329.76
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WR Meadows WATERSTOP EC PLUS 1/2 Inch x 1 Inch x 16 ft 8 Inch Roll, Carton of 6

WR Meadows WATERSTOP EC PLUS is a sodium bentonite and hydrophilic rubber combination intended to give a watertight seal at static construction joints, while working in an environment of continuous wetting and drying cycles. Full hydration or dehydration takes about four days, and the strip returns to its original placement and size after one prolonged hydration cycle. It is used in concrete footings, walls, floors, tunnels, and parking and plaza decks to stop water migrating through cast-in-place construction joints once it is confined, including under high water head. It resists a variety of chemical contaminants common to urban water and soil. It is not an expansion joint sealant: it seals structural concrete joints with a compressive strength of at least 3,000 psi (20.7 MPa), with 2 Inch (50 mm) of concrete cover all around.

Key Features

  • Sodium bentonite and hydrophilic rubber combination
  • Works through continuous wetting and drying cycles
  • Returns to its original placement and size after one prolonged hydration cycle
  • Unrestricted expansion of 300% over 4 days
  • Resists chemical contaminants common to urban water and soil

Applications

  • Static construction joints in concrete footings and walls
  • Floors and tunnels
  • Parking and plaza decks
  • Cast-in-place joints under high water head

Technical Specifications

Property Value
Type Sodium bentonite / hydrophilic rubber waterstop
Roll size 1/2 Inch x 1 Inch x 16 ft 8 Inch (12.7 mm x 25.4 mm x 5.1 m)
Carton 6 rolls, 100 LF (30.5 m)
Color Black
Weight 0.25 lb per linear foot (0.4 kg/m)
Tear strength, membrane (ASTM D1004) 75 lb (333 N)
Elongation at break (ASTM D638) >150%
Unrestricted expansion 300% over 4 days
Installation temperatures -15 to 120 F (-26 to 49 C)
Freeze/thaw cycles No effect before or after installation
Hydrostatic head resistance (ASTM D5385) 231 ft (70 m) of water
Vapor permeability (ASTM D5084) 1 x 10-9 cm per sec
Minimum concrete strength 3,000 psi (20.7 MPa) compressive
Concrete cover 2 Inch (50 mm) surrounding the waterstop
Pack Carton of 6 rolls, 100 LF
Part number 5125050

Product documents: WR Meadows WATERSTOP EC PLUS Data Sheet (PDF)

Frequently Asked Questions

How is WATERSTOP EC PLUS installed?
Clean and dry the surface and place a bead of CLAY-TITE MASTIC across it. Remove the thin liner and press the strip into place with the nylon side up. Once it is hand-pressed in place, fix it with standard masonry nails 12 Inch (304.8 mm) apart, then release the thick liner. Concrete can then be poured or placed, covering 2 Inch (50 mm) all around the waterstop.

What if the waterstop gets wet before the pour?
Do not install it in standing water or over ice. If WATERSTOP EC PLUS has been continuously submerged for more than 24 hours, let it dry for an equal time before placing concrete, or replace it with new product. Store cartons on a skid or pallet, covered with polyethylene or a tarp, and protect them from moisture.

Can it be used in expansion joints?
No. WATERSTOP EC PLUS is not intended to function as an expansion joint sealant. It seals static, structural concrete construction joints with a compressive strength of at least 3,000 psi (20.7 MPa).

What about sites with salt water or chemical contamination?
Where elevated chemical contamination or high levels of salt water are known to exist on the site, WR Meadows directs users to WATERSTOP EC PLUS HSR instead. CLAY-TITE MASTIC may go on damp surfaces, but not over dust, debris or standing water.