Tie Selection
The following tables provide some general guidelines on how to choose and install an appropriate Helifix wall tie or pinning solution. Note that in some situations, a full site survey conducted by an engineer or building professional may be required to produce an accurate specification.
Table 1 indicates the most appropriate remedial wall tie system for situations involving standard cavity wall constructions with differing cavity widths.
Table 2 matches different wall tie and pinning systems to a selection of different wall constructions and remedial situations.
Table 3 outlines tie size specifications.
Table 4 details tie penetration and pilot hole requirements for different substrates.
Ties, substrates and cavity width
Typically, the composition of the wall requiring repair, and the size of the cavity involved, will dictate which particular Helifix product will be required to provide a strong and durable solution.
Commonly, the DryFix system will provide the most suitable solution to the problems of wall instability and tie failure. On some occasions, however, such as where the problem involves a wall buit with a very large cavity or from a combination of very different building materials, a ResiTie or RetroTie wall tie solution may be required. Problems involving rubble-filled or deep masonry walls will typically require a CemTie solution, while problems involving the reconnection of bowed or bulging walls to floor joists will regularly require a BowTie solution.
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TABLE 1 – Tie systems for standard cavity walls (e.g. brick cavity and brick veneer) |
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Table 1 information is to be used as a guide only. Detailed specifications should be obtained from a suitably qualified professional. For assistance please consult the Helifix National Sales Office.
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TABLE 2 – Tie systems for other common wall types and remedial situations |
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Table 2 information is to be used as a guide only. Detailed specifications should be obtained from a suitably qualified professional. For assistance please consult the Helifix National Sales Office.
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TABLE 3 – Tie size |
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*Refer to Table 4.
Standard tie lengths include: 155, 170, 180 195, 205, 220 245, 270 and 295. Longer cut lengths are available to order. The information provided in Table 3 is to be used as a guide only. Detailed specifications should be obtained from a suitably qualified professional. For technical assitance please consult the Helifix National Sales Office.
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TABLE 4 – Tie penetrations for different substrates |
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*5mm pilot hole optional in h/wood. Table 4 information is to be used as a guide only. Detailed specifications should be obtained from a suitably qualified professional. For technical advice please consult the Helifix National Sales Office. |
