Workshop notes
Which primer colour to use under a RAL topcoat
Primer shade decides how many topcoats you need and whether a yellow or red ever looks right. How to pick white, light, mid or dark grey under a RAL colour.
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Doors, windows and railings
Spray painting metal railings in a RAL colour
A practical guide to repainting steel railings in a RAL colour: weather, rust removal, degreasing, masking, primer, spray or brush, coats and paint quantities.
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Powder coating
Powder coating gloss levels, from matt to high gloss
How powder coating gloss is measured, what matt, satin and gloss mean in gloss units, how sheen changes a RAL colour, and what to tell a coater before they quote.
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