It seems to be raining a lot at the moment, mostly in my kitchen...

There's a parapet wall above which is cracked and badly pointed and I
think must be where the water is getting in. I need a quick fix and
bought a load of Thompson's Ultra Waterseal to paint on it, after
filling the cracks with a sealer.

But since the brickwork isn't visible from the ground, I could paint
it instead/as well. Masonry paint does a good job of keeping
windowledges waterproof, so will it do the same on the brickwork? Can
I paint the waterseal on and then cover it with masonry paint, or
should it be the other way around?

Basically, I'm wondering whether waterseal does much the same job as
masonry paint, but just happens to be transparent. Is this right?

Max Christian wrote:

It seems to be raining a lot at the moment, mostly in my kitchen...

There's a parapet wall above which is cracked and badly pointed and I
think must be where the water is getting in. I need a quick fix and
bought a load of Thompson's Ultra Waterseal to paint on it, after
filling the cracks with a sealer.

But since the brickwork isn't visible from the ground, I could paint
it instead/as well. Masonry paint does a good job of keeping
windowledges waterproof, so will it do the same on the brickwork? Can
I paint the waterseal on and then cover it with masonry paint, or
should it be the other way around?

Basically, I'm wondering whether waterseal does much the same job as
masonry paint, but just happens to be transparent. Is this right?

I also await any replies since we have the same problem.
The specialist roofer says that the smooth rendered parapet wall is
porous, doesn't look like it to me, but he could be right.
Job for tomorrow is to hack off the existing cement render, re-render
and also consider paint or waterseal...

Lee

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"Lee Blaver" wrote in message
...

Job for tomorrow is to hack off the existing cement render, re-render
and also consider paint or waterseal...

Lee

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If you are going to re render it you could also put a water proofing agent
in the water when you mix the render. The sort of thing that you would use
to render a wall after a new damp course has been injected

simon beer wrote:

"Lee Blaver" wrote in message
...


Job for tomorrow is to hack off the existing cement render, re-render
and also consider paint or waterseal...

Lee

--
To reply use lee.blaver and ntlworld.com


If you are going to re render it you could also put a water proofing agent
in the water when you mix the render. The sort of thing that you would use
to render a wall after a new damp course has been injected



Good point, probably still won't hurt to paint it as well though

Lee
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Lee Blaver wrote:

simon beer wrote:

"Lee Blaver" wrote in message
...


Job for tomorrow is to hack off the existing cement render, re-render
and also consider paint or waterseal...

Lee

--
To reply use lee.blaver and ntlworld.com



If you are going to re render it you could also put a water proofing
agent
in the water when you mix the render. The sort of thing that you would
use
to render a wall after a new damp course has been injected



Good point, probably still won't hurt to paint it as well though

Lee

Just to follow up, I was reading the application notes on Dulux masonry
paint and it claims that painting parapet walls is "inadvisable".
Something about not being able to keep moisture out of the wall and
possible frost damage/spalling.

Won't be painting it then

Lee

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Lee Blaver wrote:
Just to follow up, I was reading the application notes on Dulux masonry
paint and it claims that painting parapet walls is "inadvisable".
Something about not being able to keep moisture out of the wall and
possible frost damage/spalling.

Thanks Lee, I knew there must be a reason why none of my neighbours have
done it!

For future reference, the relevant document is:
http://www.duluxtrade.co.uk/webapp/w...sheets/420.pdf

"Painting of parapet, free standing and retaining walls below ground
level damp-proof course is inadvisable. In these situations, it may be
difficult to prevent moisture penetration and consequent failure of the
paint coating. Painting this type of wall may also increase the risk of
frost damage and spalling of the brickwork or stonework."

M

Max Christian wrote:
Lee Blaver wrote:

Just to follow up, I was reading the application notes on Dulux
masonry paint and it claims that painting parapet walls is "inadvisable".
Something about not being able to keep moisture out of the wall and
possible frost damage/spalling.


Thanks Lee, I knew there must be a reason why none of my neighbours have
done it!

For future reference, the relevant document is:
http://www.duluxtrade.co.uk/webapp/w...sheets/420.pdf


"Painting of parapet, free standing and retaining walls below ground
level damp-proof course is inadvisable. In these situations, it may be
difficult to prevent moisture penetration and consequent failure of the
paint coating. Painting this type of wall may also increase the risk of
frost damage and spalling of the brickwork or stonework."

Re-reading this, I think I have mis-intrepreted it. I was under the
impression that parapet wall were always on the top of buildings, but
they can also be at ground level, in which cast the above surely refers
only to that part of the wall below ground level?

Just as confused as before now!

Lee




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Lee Blaver wrote:

Re-reading this, I think I have mis-intrepreted it. I was under the
impression that parapet wall were always on the top of buildings, but
they can also be at ground level, in which cast the above surely refers
only to that part of the wall below ground level?

Just as confused as before now!

O! Now I'm confused again as well! I really want to use masonry paint,
because the wall has lots of cracks and if I fill and paint over, it
will be easy to see if/when the cracks re-open.

Thinking about it, surely there isn't a problem with painting parapet
walls upstairs because all the moisture can get out downwards (into my
kitchen)?

M