FUSION Issue 3-2026 DIGITAL - Flipbook - Page 23
proportionally. Over-application
creates its own problems: internal
stress, solvent entrapment,
adhesion failure at layer interfaces.
Neither is acceptable in a system
where the margin for error is
measured against twenty-five
years of service.
Environmental conditions
during application, specifically
temperature, relative humidity,
and dew point, directly affect cure
quality and adhesion. Applying
coatings outside the product's
specified window, even marginally,
is not a minor deviation. It is a
genuine risk to the entire system's
performance across its intended
life. In industries where these
systems are protecting high-value
assets in demanding environments,
the discipline required around
application conditions cannot be
treated as box-ticking.
This is where operator training and
process documentation matter as
much as product specification. A
technically excellent coating system,
incorrectly applied by operators
who do not fully understand why
the application parameters exist,
will not perform as specified. The
knowledge needs to reach the
person holding the spray gun.
Maintenance as part
of the system
A twenty-five-year coating
system is not a set-and-forget
proposition. Even the best
protective coatings suffer
mechanical damage in service
through impact, abrasion, or
routine maintenance activities,
and how that damage is managed
determines whether the system
reaches its intended life or falls
well short of it.
Inspection programmes matter.
Early identification of coating
breakdown at edges, welds, or
areas of mechanical damage
allows repair before corrosion has
progressed to the substrate. Spot
repair at this stage is simple and
inexpensive. Remediation after the
substrate has corroded is neither.
This requires owners and
operators to think about coating
not as a one-time capital
expense but as an ongoing asset
management discipline. The initial
specification, the application
quality, the inspection programme,
and the repair regime are all
components of a single system.
Optimising one while neglecting
the others will not deliver a
twenty-five-year result.
“ The difference
between a system
designed for five
years and one
designed for
twenty-five is not
simply a product
choice. It is a
fundamentally
different approach to
the whole process. ”
The practical
takeaway
The shift towards longer coating
service lives is relevant to marine
fabricators, yacht builders, composite
manufacturers, and aerospace
maintenance operations of all sizes,
not just large offshore operators.
The questions worth asking are
straightforward.
Is the coating system specified
for the actual exposure
environment, or for a
theoretical average?
Is surface preparation receiving
the attention it deserves?
Are application conditions
monitored and documented,
or assumed? Is there a
meaningful inspection and
maintenance plan in place?
The answers to those questions,
more than any individual product
choice, will determine whether a
long-life coating system actually
delivers what it promises.
“ Applying coatings
outside the specified
window is not a
minor deviation. It
is a genuine risk to
the entire system's
performance across
its intended life. ”
dtc-uk.com
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