C O N C L U S I O N
When it comes to sewer corrosion coating protection
system, owners of assets have a right to be cynical
when assessing new products and technologies. Often
the first experience that people have with coatings
is dealing with a failed liner, which is blocking the
wastewater flow or dealing with an applicator that
doesn’t want to honour a warrantee claim.
By understanding the technologies, asset managers
can assess a pump station, inlet works, or manholes
based on their conditions, and assess full lifecycle
costs of each product.
In all cases, doing something to protect the concrete
assets is better than doing nothing. The alternative is
uncontrolled failure of the asset resulting in unpredictable
costs due to blockage, injury or other damage to
vehicles or impact on businesses.
When looking to apply a product, the project manager
should consider the consequences of early failure or
end of life removal and reapplication of the product, as
costs of removing a polymer coating can vastly exceed
the initial application cost.
The best overall solution is to find a supplier you can
trust to correct arising problems, continually improve
their product, honour the warrantee and reapply the
coating for free if something goes wrong with the job.
www.engineeringnews.co.nz 37
THE LEAKY ROOF ON
SIR ED’S HUT… CONQUERED
After nearly 60 Antarctic winters Sir Edmund
Hillary’s Hut at Scott Base was in a sorry state
when the Antarctic Heritage Trust began a complete
restoration of it in 2016. Sika became a sponsor of
the Trust and supplied PEF Rod and MultiSeal Tape
for the interior work, and then in late 2017, our high
performance Sika Hyflex-250 Facade sealant for the
successful new roof project.
When you need a real high performance sealant
for real tough conditions, trust Sika. And if you’d
like to help the Trust with their great work Inspiring
Explorers and preserving New Zealand’s Antarctic
history, visit www.nzaht.org
Scan to see a time-lapse
of the Hillary’s Hut project
www.sika.co.nz
Sika 1403R
Photos courtesy of Antarctic Heritage Trust
REN133
Figure 9 – Manhole with high quality
PROTECTA-Mag coating
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