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QuakeWrap wet layup (hand layup) FRP fabric installation

Wet Layup (Hand Layup) FRP System for Structural Repair

The wet layup (hand layup) FRP system is one of the most widely used methods for strengthening and repairing existing structures. In this process, dry fiber fabrics—typically glass or carbon—are saturated in the field with a resin (commonly epoxy or vinyl ester) and applied directly onto the prepared surface of the structural element. Once cured, the composite forms a thin yet extremely strong layer that bonds to the substrate and significantly enhances its load-carrying capacity. This technique has been used successfully for decades.

Typical Applications:

The wet layup system can be used to repair of strengthen:

  • Concrete beams and slabs
  • Concrete walls
  • Pipelines
  • Liquid storage tanks
  • Timber utility poles, etc.
 
 
Saturating machines are commonly used to impregnate the FRP fabric with resin on site

Features & Benefits

Using FRP wet layup system for repair and strengthening of deteriorated structural elements offers several advantages:

  • Strengthening of walls, floors, beams, and columns
  • Minimal increase in member size (typically less than ½ inch / 13 mm)
  • Repairs can be hidden from view, preserving historic appearance
  • Fast installation with minimal disruption
  • Lightweight materials that add little load to the structure
  • Finished surfaces can be painted or coated to blend with existing materials