Salt Stains on Brickwork, Not What You Might Think
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- Опубликовано: 19 мар 2023
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Roger looks at a problem with salt-stained brickwork.
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#SkillBuilder #brickwork #troubleshooting
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You are spot on about the appliance outlet pipe needing to come from a higher position. Me and my family rented a villa in Spain, and every time we washed up the washing machine filled up, I spent the day visiting merchants for parts and then re-plumbed under the sink.
Roger, absolutely spot on with the washing machine drainage advise. So many times I have been called out to machines with bad smells, filling up when not used.or even the machine not emptying. (the plumber forgot to remove the bung!). You may have gathered I am a washing machine engineer, but love your vids. Keep up the good work!
Hi Vernon
I am sorry to say I was that plumber. I remember having to go back once and take the bung out. Bloody stupid.
@@SkillBuilder Roger, you must be a man in a million, owning up to your errors. Kudos to you.
Nice one Rodger! I've told people that bricks will suck up a pint of water per brick or more with softer bricks. Under DPC bricks when wet in the winter then dry out getting salt marks. Engineers bricks now the norm for below DPC.
Also these mortar mix, site hoppers I'm sure have salts/effluent on new builds have noticed. Time of the year built another possible cause. Winter built can leave stains.
Great comment, we are seeing more efflorescence for sure.
My old man had me go up a ladder and scrub salt off a wall with acid. I was a youngster, it took me 3 days. Burns up my arms. That’s what happened in the 80s when you didn’t have a job. I got a job sharpish.
Thank you Roger, you just helped me solve a problem smell with the washing machine.
Glad to help
great explanation of how they work. cheers.
The damp proof course is only 75mm above FFL and the air brick should also have a minimum 75mm clearance from FFL these could cause you other issues too
Well explained, thanks!
Cracking, detailed explanation of a real-life problem, the backing up of the pipe from a slow clearance. Nice aside. Great video, like the warm, chatty, helpful style. Subscribed (of course).
Water softeners discharge their regenerated water under mains pressure so it can in fact go up hill. We often run them up hill maybe 6feet depending on incoming water pressure. The clamp on drain is probably not causing a problem as it will pass mains pressure. In fact the drain under regulation should have an air gap. In regards to drinking water you need to follow the water regs. Most people with a salt based softener can drink the water as the salt content will fall under 200ppm which is the regulation. Happy to send any info to you Roger from our Association of Water Softener Experts.
Hi Paul
You are right and I will ammend this. I got a bit mixed up with the overflow needing to go down under gravity. Yes please send information
Roger - the over flow must not go into a drain or at least, must go somewhere like this to show that it's overflowing. Water regs apply just as they do for overflow pipes on cwst.
In this case either the softener is faulty, or more likely the pickup pipe is obscured/dirty and so when drawing brine it's not removing the expected quantity from the tank, but replenishing more than it draws.
Thanks Stuart, all good points.
Just wanted to say , love your videos mate.. Subscribed and saved for when I build my own place in the next couple of years on some old land i got.. Thank you very much!
dig a small soakaway for the overflow pipe
Thanks for the ‘Advice’ on the spigot connections,
My Dishwasher is forever filling with smelly water.
I’ll be lifting the hose as soon as.
We have a similar looking softener and it drains like a washing machine, etc, into a normal trap that is higher than the softener. Not gravity or pumped - it's the mains water pressure that drives it. There is an overflow to outside too.
Hi Mike
I think you are right in which case there was no need for that low level discharge. The overflow is the one that is discharging onto the paving and the gravel.
Alternatively the white deposits could be efflorescence. Consider that the focus is nearer the cement bed of the DPC, the white powder reducing in density downwards so its wetter at the top of the brick. There's plainly a cavity tray judging by the weep vent above the air brick and moisture from within the cavity is finding an easier path to discharge from the tray over the brick where it is covered in white deposits
That white overflow pipe elbow looked like it was just an overflow for the W/S ….not the discharge pipe for the waste water which is usually 10mm
If it’s coming out from the mortar 3 or more years after the bricks were laid, then there’s a good chance it’s because the mortar was dosed with antifreeze
That outlet pipe tip is pure magic ughh
Good tip on the washing machine pipe
I learned a lot with this. Thank you.
Glad it was helpful!
Nice one Roger ,Thank you .👍
By the way I got all my shower problems / leaks fixed thanks to you sharing your knowledge.
Turns out it was a poorly installed cartridge that wasn't fixed to the wall and the screws that hold the two parts of the cartridge together were loose !!
It didn't cost me anywhere near the €16000 the guy wanted to charge for a complete ensuite refurb'
Good to know that our videos helped
👍👍👍Thank you
could be efflorescense on the brickwork ! if the bricks were laid on a rainy day or laid in freezing conditions !
It is exactly that 👍 the efflorescence is from the water sitting in the French drain (the gravel trap) and its soaking the brickwork above ......
Yes but the slab under the white pipe also has salt stains and the other slabs don't . That is why the title says not what you might think. The obvious is efflorescence but maybe not this time
very good point !@@SkillBuilder
Roger, generally good information but for those with less good eyesight, particularly those of us older viewers, can you increase the size or change the colour of your screen cursor so we can see it more clearly. Thanks.
Noted, I did make it a lot larger but for some reason it reverts to small when I put it on the photographs.
I don't care if you digress, Roger. It's always interesting.
I watched it back and I bored myself.
Well Roger, I thought that this video might explain why my nine-year-old house has huge patches of brickwork with white staining, which I assumed were some sort of salts coming out of the bricks. Is that how the white staining is caused is it a damaging and should I do anything about it?
Hi Jane
I am going to cover this subject in some depth soon but I will try and give you a summary now.
Salts are in the ground, the sand and the bricks. Some have more than others but it is one of those things that is hard to avoid.
Moisture will disolve the salts and as the moisture evaporates it drags salt to the surface. Some people try and hose the salts off but this puts them back into the wall so the best thing is to brush them off when the wall is dry.
Salts can cause damage to brickwork if they are trapped so it is best not to try and seal them in or cover them with render or anything else.
If your house has only just started getting patches of efflorescence (salt deposits) it may be because it is getting damp from a leaking gutter so have a look around in the rain,
If the building is dry the salts will blow away and, in time, you will have no white deposits.
@@SkillBuilder thank you very much for that very understandable answer. My house developed these patches not long after it was built and they have increased over the years. I thought I understood that they weren’t really a problem. It’s just the appearance and the house itself is absolutely sound. Thank you for responding and so quickly.
I had the same with one of my flats years ago with the washing machine and water from my sink filled it halfway - I thought I left stuff in it as I only ran it occasionally.. I can't believe the idiots that so plumbing but don't know how gravity works with water..
Also, anyone who thinks putting the machines on prior to the U-bend.. so you have a full sink, you let the water out, and it immediately fills the U-bend and goes back up the tubes to the utilities and puts water in them/the tubing because the loops are lower than the sink full of water..
Hi Roger, long time subscriber and really enjoy your videos but I think you have missed an important point with this softener.
You have only identified 1 outlet pipe out of 2. One is the brine tank overflow which you are assuming is the pipe you are looking at on that spigot, but to me, that appears to be going down a 40mm waste pipe to the sewer, therefore that pipe is actually the discharge pipe from the softener that gets rid of the water from the regen.
The actual overflow for the brine tank is probably behind the softener somewhere which then connects to that 22mm overflow pipe. Happy to be proven wrong though!
Another point to note is that the water softener regen is done with mains pressure and is not done by gravity therefore the drain can be elevated somewhat (1.8m according to my manual) depending on your mains water pressure
Cheers
03:18 fake weep vent
I thought you were going to say it at the end but didn't. So hear goes. Not a Plummer but mechanical engineer by trade. Must tell people not to use softened water on the boiler, heat exchanger side! Unless they have a stainless steel heat exchanger. Most are aluminium and they will corrode.
It is very unlikely that people will use softened water in the boiler but most boilers i come across have stainless steel heat exchangers these days. The radiators are more of a problem.
This is outdated information, still put about by old school plumbers! You should be reassured that softened water can now be used in heating systems. British Standard 7593:2006 Code of practice for treatment of water in domestic hot water central heating systems has been revised to allow the use of any supply waters, including artificially softened water, in central heating systems (including those with aluminium) provided an appropriate corrosion inhibitor is added.
But the spring clamp for the washer drain is restricting flow, cos it's not even clamping the rubber hose to the trap inlet @@
It wouldn't surprise me if the slabs were running into that corner...and that French drain (gravel trap) is struggling to dry out and its soaking into brickwork and causing efflorescence....its actually on all the top course just below the dpm.
The salt is on the slab just by the pipe and not on the other slabs.
@@SkillBuilder I see that Rog 👍 the efflorescence on the bricks below damp looks to be a different picture from the one shown at the start of the video mate that was all 🤔
Salty stains...wasn't he in Capt Pugwash cartoon ?
I loved Captain Pugwash but my all time favourite was Nogging The Nog. Take me back there.
Need to divert the softener discharge to a drain. Also the outside tap seems to be missing a non-return valve.
The non return could be in the tap.
Just got to 5mins ….& there’s the 10mm spigot outlet
DPC should be two course minimum above ground level. Efflorescence 👍
More likely to be a split resin chamber due to high water pressure or just fatigue
That’s not rising damp, if you stoped/relocated the discharge you stop the problem, check Jeff Howells research and papers on the non existence of rising damp.
Cecil John Rhodes
I cannot believe that you failed to understand the simple point I was making. The damp is creeping up the brickwork which Jeff Howell says can't happen and never has happened in any experiment. We know the source of the water and how to cure the problem, that is the central point of the video but you can see from the pictures that the dpc has done its job. If Jeff Howell had his way the dpc would not be required because he thinks rising damp is a myth. I know Jeff Howell personally and I have looked at his research. It is full of holes.
Well said Rog! Complete nonsense.....these people probably also believe the earth is flat
That you do not understand the application of scientific method says it all.
@@ceciljohnrhodes4987 yeah, you must be correct, apologies for that. I've obviously wasted my 40yrs as a building surveyor.....what a fool I am, I'll probably not sleep tonight thinking about your comment.
@@stuffoflardohfortheloveof you probably have.
I was talking about SALT once, and a bloke got so bored he jabbed me in both eyes with two fingers.
Must have missed the early signs of him preparing his hand for the assault; my bad
Should be a flap valve on the spigot
that vent is in the wrong place roger tell me where it should be
If you use a telescopic vent it can go above the dpc when the ground level dictates. I see a lot like this one at ground level because it is a straight duct which is cheaper and easier.
Brick Efflorescence is the term ...
Sorry, totally not understanding? Kindly show the replaced pipe.
Brickwork is Efflorescence
Water softeners...should be banned. Or move to Wales...best shaves of my life. But I ain't that vain to think it's crucial . Water softeners....seriously ?? I can't even put an lol. , on this subject. Beyond fkn sad