Special short versions of DryFix are available for re-pinning separated, unstable and
potentially dangerous loose render. Typically the render is 20-65mm thick but this
can vary greatly between 12mm and 80mm. Breakdown of the bond between the
render and back-up material can occur for various reasons but once delaminated it
is likely to become increasingly unstable, resulting in cracks and bulges. These in
turn encourage water penetration while wind loads tend to loosen the render even
further. Mosaic tile finishes can easily become loose and fall away.
Installed in the same way as standard DryFix ties, re-pinning is a far simpler and
more cost-effective method of stabilising the render than traditional solutions such as
hacking off and re-rendering or chemical anchoring with large pins.
DryFix pinning simply requires drilling a small pilot hole – usually 6mm – and
driving an 8mm grade 316 stainless steel helical pin through the render and into the
back-up material. The outer end of the pin is left recessed just below the surface
allowing the hole to be caulked to prevent any water penetration and provide a
good surface for repainting or mosaic tiling as appropriate.
The versatile DryFix system is a reliable, economical, high quality alternative to
traditional repair methods of chemical anchoring or hacking off and re-rendering.
- Very quick and easy to install
- Requires no toxic chemicals or
expansion devices
- Easy to test on site
- Accommodates differential
movement between render and
structure
- Combines rotational flexibility
with great axial strength
- Resists wind loads and ground
vibrations
- Simple one-piece stainless steel
pin
- Effective in all common
building materials
- May be installed by abseilers for
emergency repairs
- Supported by test data to enable
development of correct pinning
specification
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