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powder coating

Powder coating is a metal coating method that is applied as a dry, free-flowing powder. In contrast to traditional liquid paint, which uses an evaporating solvent, powder coating is generally applied electrostatically and then cured using heat or ultraviolet light. The powder can be made from either thermoplastic or thermosetting polymers. This technique is commonly employed to achieve a thick, resilient finish that offers greater durability than standard paint. ​ We can offer custom flashings in a single or double sided powder coated finish in aluminium or galvanised steel of 2mm gauge and above. We can also provide custom powder coated 0.7mm single skin galvanised profiled cladding sheets. ​Powder coating is a finish that is applied after manufacture, unlike our other coated finishes which are coated in coil or sheet form as raw material. As such powder coated finishes are applied directly to the base metal so no primer coat will be applied underneath. Powder coating is usually single sided (applied to the weather face of the product) The reverse side of the product will be the base metal and the powder coated item will usually experience some bleeding of the top finish at the edges on the reverse. If you require a bespoke colour or would prefer to explore the option of powder coated sheets and flashings please contact us to discuss your requirements.

finish properties

finish property
value
test standard
adhesion
Gt 0
ISO2409:1992 (2mm)
indentation
min 80
ISO2815:1973
mandrel bend
no cracking or detachment
ISO1519:1995 (5mm)
impact
no cracking or detachment
ASTM D2794 1969 (2.5Nm)
kesternich
max 1mm corrosion creep from scribes
ISO3231:1993 (0.21.S02-24 cycles)
acetic acid salt spray
max 16mm² over 10cm length of scribe
ISO9227:1990 (1000 hrs)
accelerated weathering
loss of gloss max 50° of original value
ISO1341:1994 luminous intensity 550 W/m² (290-800Nm)
weathering
residual gloss >50% of original (min)
Florida 5° south facing 1 year (ISO2810:1974)
resistance to mortar
no residue after removal
ASTM B3260 (24 hours)
resistance to boiling water
no defects or detachment
2 hours deionised water or 1 jour pressure cooker
condensed water
no blistering
DIN50017:1982 (100 hours) max 1mm under film creep
sawing, milling, drilling
no cracking or chipping
cupping test
typically 7 to 9 min
ISO1 520:1995 (5mm min)

Substrate used for testing was aluminium alloy AA5005-H24 with a gauge of 0.8mm pre treated according to DIN 50939:1998

Coating complies with requirements for Class 0 as defined in approved document B "fire safety" to the building regulations 2000.

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Please feel free to call us on 01902 937651 during office hours to discuss your requirements

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