Concrete CLoth Swale Lining

February 21, 2017
Concrete Clothâ„¢ GCCM installation guideline

Posted by: John Hepfinger

Stabilization or lining solutions for culverts, ditches, slopes and berms have existed for a while, but traditional methods can be difficult to install, expensive and prone to damage and high maintenance.  Concrete Cloth™ GCCM provides a quick, easy and more cost-effective answer than those alternative methods.

However, to ensure optimal utilization, it is essential that it is installed properly and to specifications. The guide below provides a basic outline of what to expect when installing Concrete Cloth™. For a more detailed overview of the application process, review the complete installation guide.

Insights into proper Concrete Cloth installation

  • Product Offloading         
    • Material will be delivered on pallets
      • Batch Rolls: Multiple rolls per pallet. Each roll easily moveable by two people     
      • Bulk Rolls: One roll per pallet. It is recommended to use proper lifting equipment, such as a fork lift and spreader bar to off load
  • Subgrade Preparation
    • Ensure subgrade is to engineering specifications
    • Soil should be smooth and clear of surface vegetation, debris, rocks and branches
    • Install Concrete Cloth at a temperature above freezing
  • Installation
    • Typical installation will begin at the lowest point of the project and proceed up the grade
    • Use a shingled installation approach to reduce water seepage
    • Back side (subgrade facing side) of Concrete Cloth has a plastic backing and faces outward on roll
    • Concrete Cloth can be easily cut with a box cutter or razor knife. Be sure to have a proper backing, such as plywood, for cutting
  • Seams and overlaps
    • In shingled application, panels should overlap by 4”
    • Overlapping seams can be fastened with stainless screws spaced no more than 12” apart
    • Seams may be fastened with a bead of adhesive applied in between the backing of the top layer and the surface of the bottom layer
    • Butt joint seams can be used in certain applications, but are not typically recommended
  • Anchoring
    • Some applications may require soil anchors or nails
    • Along all exterior edges (top, bottom and sides) a 6” deep toe-in trench is recommended
  • Hydration
    • Spray or soak installed material with water until fully saturated (overhydrating is not possible)
      • Use the “thumb test” to test saturation. Press thumb into material, pooling water will mean product is well hydrated
    • Allow 30-60 minutes for moisture to set in and then use a final dose of water to ensure proper hydration


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