Product Data Sheet Safety Data Sheet Show all documents

Lockstop

Mastic Waterstop

Lockstop Waterstop is a strip-applied mastic waterstop for nonmoving concrete joints. When properly installed using Lockstop Primer Adhesive, Lockstop creates a watertight seal between concrete surfaces. Lockstop does not swell or create any internal joint pressures and requires minimum concrete coverage.

Lockstop’s structural integrity conforms well to the underlying substrate and exhibits self healing properties. Unlike hydrophilic waterstop products, Lockstop will not expand when subjected to moisture and can be installed in nearly all weather conditions and temperatures.
Product Data Sheet Safety Data Sheet Show all documents

Usage

Lockstop is suitable for a variety of nonmoving joint applications, including:
  • Retaining Walls
  • Box Culverts
  • Penetrations
  • Concrete Pipe
  • Vaults
  • Slabs
  • Elevator shafts
 

Advantages

Lockstop’s structural integrity conforms well to the underlying substrate and exhibits self healing properties. Unlike hydrophilic waterstop products, Lockstop will not expand when subjected to moisture and can be installed in nearly all weather conditions and temperatures.

Packaging

3/4” X 1” X 16’-8” roll (6 rolls or 100’ per carton)

Color

Black

Product Details

Product Information

Shelf Life

2 years when stored in a cool, dark, dry environment

Storage Conditions

Store Lockstop waterstop in a cool, dark, dry environment.

Mass per Unit Area

1.22

(ASTM D-71)
Technical Information

Chemical Resistance

5% solutions of KOH, HCL, H2SO, NaOH, H2S

No visible deterioration

 

Application

Application steps

APPLICATION INSTRUCTIONS

Surface Prep

Lockstop is installed in and along the joint after the first concrete pour and before the second pour is made.

  
Lockstop may be installed in a variety of locations along the joint, including a keyway of appropriate dimensions or directly to a plain flat concrete surface. The use of a keyway can help stabilize the position of the Lockstop when the second pour is made. The non-expansive nature of Lockstop allows installation outside of the reinforcing steel with minimal concrete cover.

  
The concrete surface should be smooth, dry, and free of laitance or oil. Allow concrete to cure a minimum of 24 hours prior to application of Lockstop.

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