Industrial wet paint coating is the
traditional method for protecting
and aesthetically enhancing
structures and fabrications.
Radleigh carryout this process
strictly in accordance within the
disciplines laid down, previously in
BS 5493 but now updated to, ISO
12944. ISO 12944 is the designer,
specifier and paint applicator's
bible for the corrosion protection
of steel structures using paint
systems.
Unless specifically requested
Radleigh blast clean all structures
and fabrications in accordance with
ISO 8501 and apply paint coats to
suit the atmospheric corrosivity
category for the final environment
location. These categories are known
as C1 (interior of buildings,
normally dry) through to C5-I
(industrial, highly polluted) and
C5-M (coastal, with high salinity).
Immersion conditions are also
covered for either water or soil
with Im1 (fresh water), Im2 (sea or
brackish water), Im3 (soil).
Climatic conditions are difficult to
categorize but ISO 12944 Section 2
covers this in Annex A.
We also paint hot-dipped galvanized
steel which we pre-treat by either
sweep blasting using a non-magnetic
abrasive or by applying a mordant
solution. This creates the key that
is essential for good adhesion on
this difficult substrate.
The development of paint types has,
and is still, evolving with the
introduction of High Solids and
Water based Epoxies. This is to
counter the ever demanding requests
for the reduction in solvent based
materials and for the greater
durability of paint finishes.
Durability is classified into three
sections. Low (up to 5yrs), Medium
(5 - 15yrs) and High (more than
15yrs). These time limits are a
general indication of the time
expected to first maintenance. Paint
is bio-degradable and will, when
subjected to climatic conditions,
lose it's colour and thickness.
In recent years the paint
manufacturers have introduced a
Polysiloxane finish into the
marketplace. This paint, when
applied
over a high solids zinc rich primer,
is giving a very long life as a two
or three coat system and has been
adopted by the U S Coastguard
amongst others.
Radleigh have the modern techniques
to offer a first class service for
industrial wet painting and the
resources by way of the Institute of
Corrosion Level 2 inspection
qualifications to ensure that the
customers specifications are
complied with.
