Painting exterior masonry

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Painting exterior masonry

The Guardian, Saturday 12 December 2009

What’s the best way to paint exterior masonry so that it stays white for as long as possible? Do so-called ‘self-cleaning’ paints work?

“The jury is still out on self-cleaning paints because they haven’t been around long enough,” says DIY expert Julian Cassell, “but if you use traditional paints correctly, you’ll have no problem. Preparation is vital, as ever – remove flaky paint with a wire brush; apply a fungicidal wash (about £15 for five litres, from Dulux Decorator Centres) and leave for 24 hours; wash with a pressure washer, then apply stabilising solution to any powdery areas (u-diy.co.uk has Dulux stabilising primer at £16.99 for 2.5 litres). Apply two coats of masonry paint: Dulux Weathershield is tried and tested (about £20 for five litres for water-based masonry paint).”

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