On May 10, 8:55*pm, Jason wrote:
I am having my chimney rebuilt in a few weeks time, and to do that, the
gable-end wall needs scaffolding. Taking advantage of that, I would like to
paint the wall, since I cannot get to it without the scaffolding.

It is a big North East-facing wall, very close to the sea, and so gets a lot of
wind and driving rain. The wall also already has two layers of rendering - an
underlying layer that has probably been there thirty years, and a new layer that
is more like twenty years old. The outer layer is a very tough layer of some
kind of concrete, and is very hard almost to the point of feeling brittle..

We don't have any damp problems on that wall, at present.

Now the question is, what should I paint it with? I am looking for something
that will last a long time (10+ years), and will not cause any dampness. I have
no idea if some paints will seal in water and cause damp, or cause the rendering
to detach. Not knowing what the rendering is treated with (something that makes
it waterproof, no doubt) I also have to worry about what will "take" and not
peal off.

Any advice on what I should be looking for, while the clock is ticking (doing
this in three weeks from today!)

Here is the end wall, courtesy Google Street View:

http://www.flickr.com/photos/jasonju...s/l/in/photost...

The green is mostly gone now, and the chimney is leaving rather a lot more than
this!

Thanks,

-- Jason


Fwiw lime is durable, doesnt cause damp leading to damage, and handles
salts in a way that does not damage the wall underneath. Its also
exceptionally easy to apply and extremely cheap. It lasts a good deal
longer than 10 years.


NT