Remedial wall tie with dry / resin fix

RetroTie is a stainless steel remedial wall tie which offers an inner leaf mechanical fixing and a resin bond in the outer leaf. It is effective in all common building materials.

RetroTies are ideally suited for use in situations not otherwise suited to the DryFix Remedial Wall Tie System or where a full mechanical pinning solution cannot be readily achieved.

Installation involves driving a self-tapping, helical RetroTie into the far leaf of the wall to be tied or pinned, and resin bonding the remaining end of the tie into the near leaf with EpoxyPlus TE resin.

Product Specification

Material: ASTM316 as standard (Grade 304 available)
Diameter*: 8mm standard (10mm available)
Cross Sectional Area: 10mm2 (15mm2)
Stock Lengths: Standard and cut lengths up to 500mm
Required Length: Minimum 3/4 of near leaf thickness + cavity width + far leaf penetration depending on material, typically 70mm (refer to Installation Detail for further instruction)
Bonding Agent: EpoxyPlus TE in near leaf only
Characteristic Performance: Earthquake Medium Duty, for cavity 75mm (AS/NZS2699. 1 Type B Classification – 8mm Tie)

*Diameter measures from fin edge to fin edge

1. Drill a small pilot hole (diameter to suit remote leaf requirements) through the near leaf and into the remote leaf.


2. Enlarge the hole in the near leaf to 12mm and then clean of spoil and dust using a brush and airjet.


3. Load the RetroTie into an HRT support tool fitted to an SDS hammer drill and drive home.


4. Test security of fixing in far leaf with Load Test Unit.


5. Fill the hole in the near leaf with EpoxyPlus TE resin, allow resin to cure and make good.

  • Remedial wall tie for situations where a dry/epoxy resin combination fixing is required
  • Seismic retrofit of masonry walls
  • One-piece, austenitic stainless steel tie
  • Mechanical fixing, without expansion, in the far leaf
  • Hi-Fin helical profile for optimal mechanical connection in the far leaf and optimal resin bond in the near leaf
  • Far leaf security of fixing easily proof tested
  • Multiple drip points prevent cross-cavity water transfer