Concrete patching pin

PatchPin (mm & inches)

PatchPin is a short stainless steel helical pin that provides a strong mechanical key when patch repairing reinforced concrete.

System Components

  • PatchPins
  • Power drill support
  • Drill bit

1. Mark the position of the joist centre on the external wall and then drill a clearance hole (normalyl 12mm) through the wall (and first joist if parallel to the wall). Clean out the hole


2. Fit the BowTie Support Tool to an SDS rotary hammer drill, insert the BowTie and drive it into joist end to the required depth – at least 75mm (or through the second joist if parallel)


3. Fit the plastic sleeve over the BowTie and use the support tool to push it to the back of the hole in the masonry (in the outer leaf in a cavity wall)


4. Inject PolyPlus resin to fill the hole and bond the BowTie to the masonry and then make good

Additional Advice

  • Pin spacing and position may be varied to suit site conditions
  • Pins are to be installed approx. 50mm from the edge of the patched area
  • Intermediate pins should be at 150-200mm centres. Extra pins may be used at the discretion of the site management or the engineer in charge
  • Pins should be applied at not less than two pins per patch
  • Stainless steel helical pin for providing a strong mechanical key when patch repairing reinforced concrete
  • Forms powerful bond with patching mortar
  • Additional mechanical bonding security
  • Can be installed vertically or angled and bent after installation, if required
  • Requires no chemicals
  • Quick, simple and effective