- Types
- Strip, wire
- Lengths
- 150 to 300 mm
- Embedment
- 50% minimum
- Per box
- 250
Overview
Cavity wall ties are metal strips or wires built into cavity walls during construction to hold the masonry together. They are essential to the safety and stability of cavity walls.
Strip ties (as FCWT) or wire ties (as FWTB) are embedded in the inner and outer leaves. Ties with a 6mm hole or 6 × 18mm slot in the standard 30mm upstand fix to an existing vertical structure, with the other end embedded in the outer masonry. The drip can be fabricated to requirements and should point downward to stop moisture crossing the cavity.
ApplicationCavity walls.
Specifications
Strip type
| Length (mm) | Width (mm) | Thickness (mm) | Material | Qty per box |
|---|---|---|---|---|
| 150 | 20 up to 50 | 1.5/2.0/2.5/3.0 | Galvanised or stainless steel | 250 |
| 175 | 20 up to 50 | 1.5/2.0/2.5/3.0 | Galvanised or stainless steel | 250 |
| 200 | 20 up to 50 | 1.5/2.0/2.5/3.0 | Galvanised or stainless steel | 250 |
| 225 | 20 up to 50 | 1.5/2.0/2.5/3.0 | Galvanised or stainless steel | 250 |
| 250 | 20 up to 50 | 1.5/2.0/2.5/3.0 | Galvanised or stainless steel | 250 |
| 300 | 20 up to 50 | 1.5/2.0/2.5/3.0 | Galvanised or stainless steel | 250 |
Other sizes available on request.
Wire type
| Reference | Length (mm) | Diameter (mm) | Material | Qty per box |
|---|---|---|---|---|
| FDTW-SD | 150/200/250/300 | 3.0/4.0/5.0 | Galvanised or stainless steel | 250 |
| FDTW-DD | 150/200/250/300 | 3.0/4.0/5.0 | Galvanised or stainless steel | 250 |
| FWTZ | 150/200/250/300 | 3.0/4.0/5.0 | Galvanised or stainless steel | 250 |
| FWTB | 150/200/250/300 | 3.0/4.0/5.0 | Galvanised or stainless steel | 250 |
| FZWT | 150/200/250/300 | 3.0/4.0/5.0 | Galvanised or stainless steel | 250 |
Other sizes available on request.
Source: Expanded Mesh & Metal Products catalogue, page 30 (PDF, opens in a new tab), Expanded Mesh & Metal Products catalogue, page 31 (PDF, opens in a new tab), Expanded Mesh & Metal Products catalogue, page 40 (PDF, opens in a new tab)
Installation
Materials and standards
- Manufactured to
- BS EN 845-1:2003 (formerly BS 1243)
- Pre-galvanised steel
- BS EN 10346:2009 (formerly BS EN 10142:1991), ASTM A653/A653M
- Stainless steel
- BS EN 10088-2:2005, grades 304, 316, 316L; ASTM A240/A240M
- Wire
- BS EN 845-1:2003; zinc-plated wire to BS EN 10244-2:2001, ASTM A641/A641M; stainless wire to BS EN 10088-3:2005, ASTM A580/A580M
- Standards for wall ties (sheet)Frame cramps, movement ties, strip cavity ties, restraints
- Standards for wall ties (wire)Wire cavity ties
Standards are shown as listed in the FERREX catalogues. Request current test and compliance documents for your specification.
Available variants
- FCWT
- Cavity wall tie, bolt/screw-on
- FCWT-ST
- Cavity slot tie
- FLPS-SC
- L-perforated bolt/screw-on special cavity tie
- FLPS-STC
- L-perforated slot special cavity tie
- FLS-T
- L-slot tie with twist
- FPCWT
- Two-side perforated cavity wall tie
- FFS2F
- Two-side split twist tie
- FFCWT
- Flat two-side split-end cavity wall tie
- FSCT
- Safety cavity tie
- FDTW-SD
- Double triangular wire tie, single drip
- FDTW-DD
- Double triangular wire tie, double drip
- FWTZ
- Z-shape wire tie
- FWTB
- Butterfly wire tie
- FZWT
- Z-wire tie
Drawings and images
Downloads
Expanded Mesh & Metal Products
Related Products
All Expanded Metal & Accessories
Frame Cramps
Restraints between masonry and the structure, fixable to concrete, steelwork and masonry.
Movement Ties
Wall ties with debonding sleeves that restrain masonry while allowing it to expand and contract.
Wall Ties Guide
Head, body and tail options that combine to suit a specific tie application.
Enquire About Cavity Wall Ties
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