How to Install Wall Ties in 3 Easy Steps
Remedial wall ties are much easier to install than most people give them credit for; the process can actually be broken down into three very simple steps.
The wall ties we supply have been designed by Thor Helical to provide the most professional results every time, whether used in brick, block, stone or concrete walls.
A feat of technology and engineering, Thor Helical remedial wall ties from Twistfix benefit from twin-thread longitudinal blades with a reactive interface angle, allowing and extremely accurate self-tapping penetrative path to be driven into the masonry element. Each wall tie has a circumscribed diameter of 9mm and is extremely resistant to corrosion.
The helix consistency and driving configuration aspects of Thor Helical wall ties are patented. Traditional ties involve clamping the wire at one end while the other is turned, developing a helix with a varying pitch across its length, Thor helical ties use advanced twisting die technology to control this pitch precisely, forming tightly-mating threads that guarantee superior interlock performance.
At the driving end, the patented arrangement (Pat GB2439633) guarantees safe, controlled installation at close quarters and low cost tooling that allows the operator to keep both hands on the drill throughout, making it easier during insertion.
Helical wall ties have been used for more than 25 years and have been subject to intensive independent testing programs. As recommended in B.R.E. Digest 329 (Table 5) as being “suitable for use in all remedial situations”, irrespective of the buildings substrate or its fire performance criteria, the ties represent an engineered upgrade on earlier designs and are CE marked to be reliable in all types of masonry.
The interlock anchorage of the wall tie does not exert expansive stress or rely on adhesion, continuing to provide its support throughout fire and temperature extremes without being affected. In cross-sectional profile, the tie reveals a wide portion which is there to maximise grip and a narrow portion responsible for accommodating differential movement in any and all directions. Migration of water across cavity is prevented by the deep, continuous helical troughs.
When under load, these helical troughs impart an accumulative cone of stress at tangential angles to the helix; this means that the load is evenly spread across the length of the tie.
The 3 Steps
DRILL a small pilot hole using a light percussive hammer drill. Make sure to stop the rotation of the drill before drilling the remote wall layer to prevent whipping.
Using a lightweight roto-hammer drill and SDS support tool, DRIVE the tie into the masonry.
Once the took recesses the tie beneath the wall face, FINISH the job by disguising the entry bore with suitable filler.