Prepapring painted pebbledash for repainting

[rodbirtles]

I have a pebbledashed house, previously painted. The paint is now in poor condition - flaking and cracking. I have tried jetwashing a test area, which removes some paint but leaves lots of holes and gaps behind the old paint. A wire brush makes little impression. I can't use a scraper as it just gets stuck on the pebbles. How should I go about preparing the surface for repainting please?

 

[Bosswhite]

Jet wash it off to remove loose paint, a coat of stabiliser if the paint is still flakey,
and a couple of coats masonry paint should do it.
Being Pebble dash you will have to use a brush

 

[TheDec]

In situations such as yours, you should avoid the use of a wire brush as any metal particles left will be subject to rusting on the application of a water based masonry paint. These can in time cause brown staining on the surface of your paint.

Dec

 

[Chri5]

Masonry rollers can work well on pea and pebble dash, although flint or chipping dash is best with a brush.

 

[rodbirtles]

I have hired a good jetwasher and most of the paint is coming off - back to the pebbledash. There are some bits left - and some 'pockets' of paint with a gap behind. I presume that these have to go - any gaps behind old paint risk flaking off after I have repainted. How much with stabiliser do to stick them on?

 

[rodbirtles]

Some of the paint started out looking like this:

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• rodbirtles
• 11 Aug 2013
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• rodbirtles
• 11 Aug 2013
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with cracking over large areas.

After power washing, I get this

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• rodbirtles
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• rodbirtles
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or this

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• rodbirtles
• 11 Aug 2013
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• rodbirtles
• 11 Aug 2013
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I am concerned that having got some of the paint off - which inevitably leaves flaky edges - I will have to carry on and get ALL of it off. This will take me days and enough water to end a drought in a small African nation!

How thorough do I need to be? Will stabiliser hold together the bigger remains? Or does it all have to go?

 

[Bosswhite]

Stabiliser should do it now.

Then a couple of coats of masonry paint.