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Brick, Mortar and Pointing |
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| message from Phöènix on 13 May 2004 |
Paying some attention to the externals this month has raised some questions.
1. What's best to use to clean creamy coloured bricks. Maybe just washing up
liquid but as they are 20 feet up I thought I may ask before getting out the
ladders. Have you used a labour saving cleaner that has restored these
easily.
2. Mortar Colour. I want to match some repairs to the current sandy coloured
mortar. Got any tips or a page that may help me doing this.
3. I have some larger areas that will need complete repointing. Approx 50m2.
What's a reasonable per sq.m charge for this in the south east, inc vat.
(obviously excluding extra costs such as scaffolding).
Thanks for any help with these.
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| The Natural Philosopher replied to Phöènix on 13 May 2004 |
pressure washer.
Use a mixture of white cement and yellow sand. You may add hydarted
linme as well for s more flexible mix.
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| Michael Mcneil replied to The Natural Philosopher on 14 May 2004 |
"The Natural Philosopher" <a@b.c> wrote in message
news:40A3A1EF.7040604@b.c
Since most mortar is sandy coloured, what makes you think that yellow
sand is the answer?
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| Anna Kettle replied to Michael Mcneil on 15 May 2004 |
Make sure that the mortar is weaker than the bricks, because if there
is any movement then you want the mortar to crack not the bricks.
The thing that makes mortar grey is generally cement and you say your
mortar is sandy coloured so I would suspect that it is not cement
mortar (It could possibly be white cement tho) and instead is lime
mortar. Lime is a brilliant white colour so in lime mortar the colour
of the sand is what controls the final colour of the mortar.
Lime is also weaker than cement which is a GOOD THING especially if
the bricks are the old soft type, but not so important with your
modern hard brick
Once you've decided if you have lime mortar or white cement mortar
then experiment with a couple of local sands to find a good colour
match
Anna
~~ Anna Kettle, Suffolk, England
|""""| ~ Plaster conservation and lime plaster repair
/ ^^ \ // Freehand modelling in lime: overmantels, pargeting etc
|____| www.kettlenet.co.uk 01359 230642
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