BowTie is a long stainless steel retrofit helical tie used for stabilizing bowing / bulging walls, without any external plates, by securing and anchoring them to internal floor and ceiling joists.
Standard BowTies are recommended when installing into joist ends.
The BowTie range can be used as a wall-diaphragm anchorage in seismic upgrades. Download the Design Guide for more information.
- Drill bit for clearance hole
- Power support tool
- Hand support tool
- Used to stabilize bulging walls by securing and anchoring them to internal floor and ceiling joists
- Standard BowTies are recommended when installing into joist ends
- BowTie HDs are recommended when installing into parallel joist sides
- Mechanically connects floor joists or roof beams
- Provides stiffness without the need to install noggins or additional bracing
1. Mark the positions of the joists on the external wall.
2.Drill clearance holes (normally ½”), through the masonry only, in line with the centre of the joists.
3. Clean out the hole to clear any dust or debris.
4. Fit the power support tool into an SDS rotary hammer drill and insert the BowTie.
5. Drive the BowTie (off hammer) into the joist to the required depth (3″ minimum).
6. Fit the sleeve over the tie and push it to the back of the hole in the masonry (use the support tool)
7. Inject Helifix HeliBond grout into the hole to fill it completely.
8. Make good all holes at the surface with brick dust or matching mortar or leave ready for any decoration.
- One-piece grade 304 or 316 stainless steel tie
- Unique, one-piece, self-tapping design – no splitting of wood
- Effective in all common building materials
- Accommodates normal building movement
- Suitable for hardwood use
- Very effective and economical solution
- Minimal inconvenience to occupants
- Quick, easy, non-disruptive external installation
- Visibly unobtrusive – no external plates