DryFix
Dry mechanical pinning and remedial wall tie system
DryFix is a very versatile mechanical pinning system for tying masonry substrates in countless applications including retrofitting wall ties to masonry suffering from failed, missing, inadequately spaced or corroded wall ties...Learn more
DryFix involves driving of a self-tapping helical tie through the material to be tied or pinned, typically via a small pilot hole, to provide a solid fixing without mechanical expansion, resin or grout.
Precision engineered from austenitic stainless steel, Grade 316 as standard, DryFix ties are quick and easy to install. They are suitable for use in all standard cavity, masonry veneer and multi-leaf masonry construction and installation into dry-pressed brick, extruded brick, block, aircrete, concrete, strong mortar, timber, stone and more.
DryFix ties may be used in hollow materials and close to edges. They are flexible to permit normal masonry movement, are designed to shed water in cavity construction and provide strong, reliable axial restraint in both tension and compression...Learn more
Applications
- Replacement wall tie
- Securing multiple layers of masonry
- Pinning delicate masonry features
- Pinning render and thin panels
- Strengthening facades to meet seismic requirements
Features
- Austenitic stainless steel tie, Grade 316 as standard
- Slim, self-tapping, one-piece design
- Mechanical fixing, without expansion, in both leaves
- Small cross-section for stress-free installation and fixing
- Hi-Fin helical profile for optimal mechanical connection
- Great axial strength
- Flexibility to accommodate natural building movement
- Effective in bricks, blocks, concrete, hard mortar and timber
- Effective in brick veneer, cavity and solid wall constructions
- Effective close to edges and usable in all weathers, temperatures and environments
- Patented remedial tying system
Benefits
- Highly economical and easy to install
- Requires no resin, grout or mechanical expansion
- Far and near leaf security of fixing easily proof tested...Learn more
- Multiple drip points prevent cross-cavity water transfer
- Can be installed working in from the external to internal leaf or working out from the internal to external leaf
- Can be installed through insulation without affecting its thermal performance
- Leaves masonry virtually unmarked
- Minimal inconvenience to occupants
Bonding Agent
- None required
DryFix | System components
From left to right: Drill bits, Collet Key with tie, Load Test Unit, Power Driver Attachment with DryFix tie, Driver extension tool, DryFix remedial wall ties
Installation
Example Application: Replacing wall ties in a brick veneer wall (Reference: ANZ-RT08)
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Mark the locations for the DryFix ties onto the face of the wall at the required spacing...Learn more
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Drill a small pilot hole (typically 5mm diameter) through the timber frame and into the remote leaf to the specified depth...Learn more
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Load a DryFix tie into a DryFix Power Driver Attachment fitted to an SDS hammer drill.
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Support the power driver with one hand, leaving the other to work the drill, and drive the tie into the hole to finish flush or just beyond the surface of the timber.
Caution: Always locate, identify and isolate any electrical, water or gas services which may be present in the wall or the wall cavities and can pose a safety risk before drilling or cutting. Always take the necessary safety precautions. Use electrical safety gloves and wear appropriate footwear and eyewear. OHS Reference: Helifix Remedial Wall and Pinning Safe Installation Guide.
Installation
Example Application: Replacing cavity wall ties (Reference: ANZ-RT01)
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Mark the locations for the DryFix ties onto the face of the wall at the required spacing...Learn more
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Drill a small pilot hole (typically 5mm diameter) through the near leaf and into the remote leaf...Learn more
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Load a DryFix tie into a DryFix Power Driver Attachment fitted to an SDS hammer drill.
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Support the power driver with one hand, leaving the other to work the drill, and drive the tie into the hole until the outer end is fully recessed below the face of the masonry. (DryFix wall ties are self-tapping and will work themselves into the wall following the hammer action of the drill.)
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Make good the hole using either a mixture of sand, cement and oxide colouring to match the original surrounding brick surfaces or a silicone sealant coated with brick dust or drillings.
Caution: Always locate, identify and isolate any electrical, water or gas services which may be present in the wall or the wall cavities and can pose a safety risk before drilling or cutting. Always take the necessary safety precautions. Use electrical safety gloves and wear appropriate footwear and eyewear. OHS Reference: Helifix Remedial Wall and Pinning Safe Installation Guide.
| TYPICAL APPLICATIONS | ||||
|---|---|---|---|---|
 Cavity brick wall  Brick to Timber Stud (or Stud to Brick) |  Brick to Steel Frame (using DryLink) |  Brick to Concrete Block (or Block to Brick) |  Brick to Concrete |  Multiple brick leaves |
 Repairing Limestone / Sandstone or Brick Arches and Lintels |  Concrete block to concrete block |  Combine with DryLink and HeliBar for an integrated solution | ||
Asymmetric DryFixA special asymmetric DryFix version is available for particular applications. The asymmetric tie has a long standard diameter section and a short reduced diameter section. The asymmetric DryFix tie is ideally suited to securing soft or delicate outer leaf materials to a hard inner leaf. |  | |||
 | Render and thin panel pinningShort DryFix versions (including 50, 70 and 90mm) are available for repinning separated, unstable and potentially dangerous loose render and thin panels. DryFix may also be used to secure Helifix stainless steel Render Mesh when re-rendering. | |||
| TECHNICAL SPECIFICATIONS | ||||
|---|---|---|---|---|
| Standard Material | Diameter | Standard Lengths (mm) | Standard Pack | Product Code |
| Grade 316 stainless steel | 8mm | 155 | 100 | HDF8x155 |
| '' | '' | 170 | 100 | HDF8x170 |
| '' | '' | 195 | 100 | HDF8x195 |
| '' | '' | 220 | 100 | HDF8x220 |
| '' | '' | 245 | 100 | HDF8x245 |
| '' | '' | 270 | 100 | HDF8x270 |
| '' | '' | 295 | 100 | HDF8x295 |
| '' | '' | 325 | 100 | HDF8x325 |
| '' | '' | 350+ | To Order | HDF8x350+ |
| '' | 10mm | To Order | To order | HDF10x... |
| '' | Asymmetric | To Order | To order | HDFASx... |
| NOTES: | As a general rule, DryFix length should equal: Near leaf width less 10mm + cavity width + far leaf penetration (see Table 3 Tie Selection, Technical Section of this website) Allow for additional tie length if any near leaf render or plaster is present. DryFix are to be spaced in accordance with building code requirements to suit site conditions and location. Relevant standards include New Zealand Standard NZS4210 Australian Standard AS3700 ...Learn more | |||
| Typical DryFix Applications and Recommended DryFix Sizes | |||||
|---|---|---|---|---|---|
| Common Brick/Cavity/Brick wall | Cavity width (mm) | DryFix ø (mm) | DryFix Length (mm) | DryFix Code | |
| |  | < 40 | 8 | 195 | HDF8x195 |
| 40-70 | 8 | 220 | HDF8x220 | ||
| 70-90 | 8 | 245 | HDF8x245 | ||
| 90-110 | 8 | 270 | HDF8x270 | ||
| 110-120 | 8 | 295 | HDF8x295 | ||
| 120 < | 10 | 300 < | HDF10x... | ||
| Note: | As a general rule, DryFix length should equal: Near leaf width less 10mm + cavity width + 60-70mm far leaf penetration Allow for additional tie length if any near leaf render or plaster is present. | ||||
| PDF References: | Repair detail ANZ-RTO1 | ||||
| Common solid 230mm Brick/Brick wall | Internal Mortar Joint Width (mm) | DryFix ø (mm) | DryFix Length (mm) | DryFix Code | |
|---|---|---|---|---|---|
| |  | 10 | 8 | 170 | HDF8x170 |
| Note: | Allow for additional tie length if any near leaf render or plaster is present or if the brick leaves have delaminated. | ||||
| PDF Reference: | Repair detail ANZ-RTO5 - Pinning a solid brick wall | ||||
| Brick/Cavity/Concrete Block wall | Cavity width (mm) | DryFix ø (mm) | DryFix Length (mm) | DryFix Code | |
|---|---|---|---|---|---|
| A) Connecting brick to block  B) Connecting block to brick | 
 | < 120 | 8 | See note | HDF8x... |
| 120 < | 10 | See note | HDF10x... | ||
| Note: | DryFix length to equal:Near leaf width less 10mm + cavity width + remote leaf penetrationTypically, ties should be sufficiently long to connect 50-70mm into the brick leaf if connecting first through the concrete block. If connecting first through the brick leaf, each tie should be long enough to connect with at least the outer shell of the concrete block (as pictured) or outer shell and any inner concrete webbing if present. Each tie should be long enough to embed 50-70mm into the inner block leaf if this leaf has been core filled. Allow for additional tie length if any near leaf render or plaster is present. | ||||
| PDF Reference: | Repair detail ANZ-RTO6 - Replacing wall ties in a brick / concrete block wall | ||||
| Concrete Block/Cavity/Concrete Block wall | Cavity width (mm) | DryFix ø (mm) | DryFix Length (mm) | DryFix Code | |
|---|---|---|---|---|---|
| |  | < 120 | 8 | See note | HDF8x... |
| 120 < | 10 | See note | HDF10x... | ||
| Note: | DryFix length to equal:Near leaf width less 10mm + cavity width + remote leaf penetrationTypically, each tie should be long enough to connect with at least the outer shell of the inner concrete block (as pictured) or outer shell and any inner concrete webbing if present. Each tie should be long enough to embed 50-70mm into the inner block leaf if this leaf has been core filled. Allow for additional tie length if any near leaf render or plaster is present. The RetroTie system may be prefered when the tie length greatly exceeds 300mm. Contact Helifix for details. | ||||
| PDF Reference: | Repair detail ANZ-RTO6 - Replacing wall ties in a brick / concrete block wall | ||||
| Brick / Cavity / Concrete construction | Cavity width (mm) | DryFix ø (mm) | DryFix Length (mm) | DryFix Code | |
|---|---|---|---|---|---|
| |  | < 120 | 8 | See note | HDF8x... |
| 120 < | 10 | See note | HDF10x... | ||
| Note: | DryFix length to equal:Brick width less 10mm + cavity width + far leaf penetrationTypically, ties should be sufficiently long to embed 35-50mm into the concrete depending on its hardness, with harder concretes requiring less embedment. Allow for additional tie length if any near leaf render or plaster is present. | ||||
| PDF Reference: | Repair detail ANZ-RTO7 - Replacing wall ties in a brick / solid concrete wall | ||||
| Standard brick veneer construction | Cavity width (mm) | DryFix ø (mm) | DryFix Length (mm) | DryFix Code | |
|---|---|---|---|---|---|
 A) Connecting brick to stud B) Connecting stud to brick | 
| < 120 | 8 | See note | HDF8x... |
| 120 < | 10 | See note | HDF10x... | ||
| Note: | As a general rule, DryFix length should equal: Near leaf/stud width less 10mm + cavity width + 60-70mm stud/remote leaf penetration Allow for additional tie length if any near leaf render or plaster is present. | ||||
| PDF Reference: | Detail ANZ-RTO8 - Replacing wall ties in a brick veneer wall | ||||
| Brick/Cavity/Steel Stud construction | DryFix ø (mm) | DryFix Length (mm) | DryFix Code | Use With | |
|---|---|---|---|---|---|
| | 8 | See note | HDF8x... | DryLink | |
| Note: | DryFix length to equal:60-70mm brick leaf embedment + cavity width + 100mm or more for stud connectionAllow for additional tie length if any render or plaster is present. | ||||
| PDF Reference: | Detail ANZ-RTO9 - Replacing wall ties in a brick/steel frame wall | ||||