Home > Off Topic > New brickwork looks craaap |
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p38arover Member Since: 16 Dec 2015 Location: Western Sydney Posts: 1534 |
Efflorescence can be removed with white vinegar. Probably cheaper than the chemicals you've tried.
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29th Aug 2021 12:25pm |
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AJGalaxy2012 Member Since: 11 Jun 2018 Location: Gainsborough Posts: 1464 |
I had a load of it on my wall, I pressure washed it many times and it kept coming back. After a while though the amount reduced significantly until now, theres none. Just keep washing it, it does fade away to nothing. BMW i3 Electric Car
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29th Aug 2021 5:01pm |
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Andy S Member Since: 16 Jun 2013 Location: Sevenoaks Posts: 1025 |
Spraying water won’t actually help. The white efflorescence arises as the brick expresses salts from itself as a result of the chemical reaction with water. The best thing to do is brush it with a wire brush if it really bothers you, otherwise just leave it and it will eventually disappear once the salts have leached out. There are any number of ‘fixes’ out there and cowboys who will take your money, but anything they sell you will not clear it up. |
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30th Aug 2021 4:40pm |
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nicedayforit Member Since: 11 Jun 2011 Location: Beside the Solway Posts: 3977 |
If the retaining wall and steps are in contact with earth the problem will be exacerbated by the moisture in the earth being absorbed into the bricks and reacting with the brick salts. The problem will go away eventually but in the meantime cleaning with a stiff brush is probably the only way to deal with it. |
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30th Aug 2021 5:18pm |
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AJGalaxy2012 Member Since: 11 Jun 2018 Location: Gainsborough Posts: 1464 |
Pressure washing certainly washed the white marks away for me, even more so when I used the hot pressure wash. BMW i3 Electric Car 2012 Full Fat RR 4.4 TDV8 (now gone) 2006 VW Touareg 3.0 TDi V6 |
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30th Aug 2021 6:48pm |
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dingg1 Member Since: 29 Jun 2013 Location: PORTUGAL Posts: 1345 |
Brick acid at your local builder supply yard |
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30th Aug 2021 7:05pm |
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chugga90 Member Since: 24 Jul 2015 Location: Chilterns Posts: 153 |
Brick acid potentially will make salts worse. |
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30th Aug 2021 8:17pm |
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dingg1 Member Since: 29 Jun 2013 Location: PORTUGAL Posts: 1345 |
Brick acid dissolves sodium carbonate, a common cause of efflorescing salts in brickwork.
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30th Aug 2021 8:57pm |
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Andy S Member Since: 16 Jun 2013 Location: Sevenoaks Posts: 1025 |
Yes it washes away the surface salts, but you wet the brickwork and that moisture gets absorbed and draws more salt from the brick, so you’re not solving the problem. Yes a builders merchant will sell you all kinds of chemicals to ‘cure’ the problem but they don’t really work. You just have to leave it and brush off if you find it a problem. It’s a natural process and does not mean the bricks are dud. It will eventually fully express and won’t be a long term problem. At least that’s what I learned when getting my surveying qualifications…… |
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30th Aug 2021 9:32pm |
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AJGalaxy2012 Member Since: 11 Jun 2018 Location: Gainsborough Posts: 1464 |
I understand that, I'm treating the symptoms not the cause. I was merely removing the eyesore temporarily when it was bad and eventually flushed it all out. BMW i3 Electric Car
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31st Aug 2021 5:08am |
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mrblonde Member Since: 24 Jan 2012 Location: Cambs Posts: 728 |
Cheers all - few options here so I’ll let it dry right out first and get the missus to give it a damn good scrub with the new brush I bought her recently
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2nd Sep 2021 8:31am |
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ajac8 Member Since: 04 Oct 2011 Location: Shakespeares County Posts: 1655 |
It will disappear. Just salts from either the clay used to fire the brick or ground slats from poorly stored bricks. Anything wet to solve the problem will not work.
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2nd Sep 2021 4:27pm |
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ilard Member Since: 21 Oct 2012 Location: London Posts: 712 |
Is it lichen? I read it’s lichen so using a patio algae cleaner could work. But if it’s the regular sweating of salt out of new brick, as we do, then wait-do-nothing could be a significantly cheaper option. L405 P400e Autobiography (MY2020)... Silicon Silver / Espresso |
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3rd Sep 2021 10:17pm |
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northernmonkeyjones Member Since: 24 Mar 2012 Location: derby Posts: 8523 |
we see it all the time on new house brickwork, generally caused when the bricks are laid wet, or water has been allowed to get into the cavity wall, eventually it will go away through weather action of being rained on and drying. wetting it up will only make it worse, and though brick acid will clean it, it could discolour the mortar and will only be a temporary solution as until all the salts in the brick have leached out it will keep reappearing. Personally I would just leave it alone and give it 12 months to stabilise before doing anything too drastic..
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4th Sep 2021 6:35am |
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