Preparing old paintwork

Paintwork in fairly good condition

Wash down all sound paintwork then:

• fill cracks, holes, dents and so on with filler

• fill chips out of the paintwork with either a fine textured filler or with undercoat. Sand flat when dry

• remove the paint over resin stains with a blowlamp or with a chemical stripper – see below. Treat only the stained area and when the wood surface is exposed and clean, seal the knots with knotting followed by one or two coats of primer. (Use an aluminium primer if you burn off the paint)

• use a coarse abrasive paper to remove the paint surrounding small areas where the paint has lifted or is flaking. Follow this with one or two coats of primer

• treat any areas that are showing signs of corrosion.

Paintwork in poor condition

If you have areas of poor paintwork do not be tempted into simply removing the obviously loose cracked and blistered paintwork and then painting over the whole area—the paintwork surrounding the cracked and blistered areas is also likely to be in poor condition, even though it is not obvious, and any paint put on top of it will not last long. Remove the old paint and expose the original surface. It is not necessary to remove all the old paint — strip it as far as a joint or edge where the old paint is sound.

28. July 2011 by admin
Categories: Painting, Preparation | Tags: | Comments Off on Preparing old paintwork


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