Bumps appeared in rendered retaining garden planter wall.

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Hopalongsplat

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We had 4 planters built in our garden. The insides were painted with bitumen then rendered by the builder. He suggested we get textured Sandtex paint. We couldn’t find textured in the colour we wanted (Gravel) so we bought smooth. We noticed too many imperfections. The builder told us to put some kiln dried sand into the paint to get a textured effect. We did this but after reading online that it could muck up the properties of the mix we decided to get Dulux Weathershield textured masonry paint mixed to the closest colour we could for further coats. A couple of days later I went out to the garden and when the sun was shining from a particular angle the walls looked horrendous. They are covered in bumps. I asked the builder if this could be due to the sand which was mixed into the paint and he thinks it is what’s caused the issue, possibly it’s not been stirred properly on second use. Has anyone experienced this problem before? Could it be the sand or something else? I will add some photos of before and after (now that I have sanded with a grit rub brick suggested by builder).
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We painted with the smooth sandtex paint first and these bumps didn’t appear until we added the sand and also changed the colour slightly to the Dulux so I’m not sure what has caused it. Any suggestions? Hi
 
At least inside the planters will have plants to hide it which is the worst looking places by those photos!
How long did you leave it before you painted it? Not that that is the problem - just curious

Virginia creepers will cover it all up:X3:
 
How long did you leave it before you painted it? Not that that is the problem - just curious

I can’t remember but I think the ones which look okay were left quite a while before painting. What I don’t understand is that they all look fine when painted with smooth Sandtex (Gravel colour). It wasn’t until we added sand and then changed to the Dulux textured in a slightly darker colour that the bumps appeared. Some of them seem to be just the patches from the colour difference as we need to do another coat but there are also definitely areas which look like build up from the sand/paint coat (too thick). Then there are some bumps which I’m in decided on.
 
Should call this the rendering forum the amount of dodgy rendering being posted on here this year alone is ridiculous,
 
We had 4 planters built in our garden. The insides were painted with bitumen then rendered by the builder. He suggested we get textured Sandtex paint. We couldn’t find textured in the colour we wanted (Gravel) so we bought smooth. We noticed too many imperfections. The builder told us to put some kiln dried sand into the paint to get a textured effect. We did this but after reading online that it could muck up the properties of the mix we decided to get Dulux Weathershield textured masonry paint mixed to the closest colour we could for further coats. A couple of days later I went out to the garden and when the sun was shining from a particular angle the walls looked horrendous. They are covered in bumps. I asked the builder if this could be due to the sand which was mixed into the paint and he thinks it is what’s caused the issue, possibly it’s not been stirred properly on second use. Has anyone experienced this problem before? Could it be the sand or something else? I will add some photos of before and after (now that I have sanded with a grit rub brick suggested by builder). View attachment 53327
its called sunsine rash not bumps be ok on cloudy days
 
U sure it was a builder and not a butcher that did those walls ,priceless sand in the paint caused it I’ve heard it all now
 
Thanks to those who have given me some good input and advice. It’s appreciated.

To the rest of you, I thought this was a forum for people to get advice, not somewhere for people to take the piss to see who can get the biggest laugh. We’re not all specialists in plastering/rendering /building. Maybe you know your stuff on this subject but I’m sure there are lots of subjects you know jack about. Have you got nothing better to do? I’m currently a full time mum and quite clearly know very little about rendering but what I do know is that the first two planters are smooth and fine so just wanted to understand what could have been different to cause the other two to appear bumpy.
 
Thanks to those who have given me some good input and advice. It’s appreciated.

To the rest of you, I thought this was a forum for people to get advice, not somewhere for people to take the piss to see who can get the biggest laugh. We’re not all specialists in plastering/rendering /building. Maybe you know your stuff on this subject but I’m sure there are lots of subjects you know jack about. Have you got nothing better to do? I’m currently a full time mum and quite clearly know very little about rendering but what I do know is that the first two planters are smooth and fine so just wanted to understand what could have been different to cause the other two to appear bumpy.

The rendering is the problem. The paint and the light will highlight that for sure.

Take it up with the person who attempted to render it.
 
Thanks to those who have given me some good input and advice. It’s appreciated.

To the rest of you, I thought this was a forum for people to get advice, not somewhere for people to take the piss to see who can get the biggest laugh. We’re not all specialists in plastering/rendering /building. Maybe you know your stuff on this subject but I’m sure there are lots of subjects you know jack about. Have you got nothing better to do? I’m currently a full time mum and quite clearly know very little about rendering but what I do know is that the first two planters are smooth and fine so just wanted to understand what could have been different to cause the other two to appear bumpy.
Put all the piss taking aside, everyone on here will agree that no plasterer worth their salt would leave that kind of workmanship. It's simple you've been hoodwinked by your builder its that bad. It's beyond the light hitting it at the wrong angle. The whole process is wrong its obviously been hit to early probably by a sponge and the coat has been pulled all over the place.
 
We had 4 planters built in our garden. The insides were painted with bitumen then rendered by the builder. He suggested we get textured Sandtex paint. We couldn’t find textured in the colour we wanted (Gravel) so we bought smooth. We noticed too many imperfections. The builder told us to put some kiln dried sand into the paint to get a textured effect. We did this but after reading online that it could muck up the properties of the mix we decided to get Dulux Weathershield textured masonry paint mixed to the closest colour we could for further coats. A couple of days later I went out to the garden and when the sun was shining from a particular angle the walls looked horrendous. They are covered in bumps. I asked the builder if this could be due to the sand which was mixed into the paint and he thinks it is what’s caused the issue, possibly it’s not been stirred properly on second use. Has anyone experienced this problem before? Could it be the sand or something else? I will add some photos of before and after (now that I have sanded with a grit rub brick suggested by builder). View attachment 53327
This builder wasn't a ghost by any chance? Got a go faster striped van, talk the back legs off a donkey, @Casper
 
Put all the piss taking aside, everyone on here will agree that no plasterer worth their salt would leave that kind of workmanship. It's simple you've been hoodwinked by your builder its that bad. It's beyond the light hitting it at the wrong angle. The whole process is wrong its obviously been hit to early probably by a sponge and the coat has been pulled all over the place.

The render looked perfect, smooth, couldn’t see any bumps when it had been painted with the smooth Sandtex (apart from some lines where he’d had to patch some bits which made the scratchy noise). Maybe this paint was reflecting the light so we couldn’t see it? It was only once painted with the Sandtex with sand added then the Dulux textured (slightly darker) that I noticed it and only at around 11.30am. He’s been round once to have a look and is going to come back to skim it. He’s a decent guy and has no plans to leave it like this. We maybe need to go back to the smooth Sandtex if it looked fine with that.
 
Thanks to those who have given me some good input and advice. It’s appreciated.

To the rest of you, I thought this was a forum for people to get advice, not somewhere for people to take the piss to see who can get the biggest laugh. We’re not all specialists in plastering/rendering /building. Maybe you know your stuff on this subject but I’m sure there are lots of subjects you know jack about. Have you got nothing better to do? I’m currently a full time mum and quite clearly know very little about rendering but what I do know is that the first two planters are smooth and fine so just wanted to understand what could have been different to cause the other two to appear bumpy.
Absolutely horrendous job. What more do you need to know?
Name and shame the ghost.
 
TBH @Hopalongsplat I feel for you;
1) your wall looks pants
2) you have not got the response you were expecting on here quite

We all see a rendered wall with a poor finish. Shame as it appears to be a decent property you have and you want it to be nice. Unlike buying a piece of furniture from John Lewis where you can see what you are paying for (and they have a great returns policy) when it comes to builders what you get as an end result is not always good and rarely returned to for improvement of an kind because they did their best already and can’t be up skilled over night plus stop answering calls and never come back.
You said the wall was fine before you painted it with Dulux then claim to ask why does the wall look bad? Well if it looked bad after you used Dulux then you knew the answer? If that was the case all walls around would look the same bumpiness. They don’t though. Your builder floated or sponged it off to early we think. The swirly nature to me look like a left handed person did it and did it to early before the render was hard enough to take the pressure but still alive to yield to the process and become flat. Was he in a rush? Was he ignorant? Was it his apprentice?
Some people come on here and get lots of sensible replies others get abused, many get a mix of both. It is site banter really. Something to do with the type of question, or time of night it gets read? Levels of alcohol etc all play a part and we want a laugh at the end of a work day not to come home and give free advice like a charity. You want advices - we want a laugh. You got a blunt deal here and worse deal from your builder and it is sad. Fortunately we don’t get alot of sunny days in Britain do your walk will not reveal its faults all day every day. Paint it up good as you can.
Condolences sincerely x
You could employ a rendering outfit to perform a expensive remedy but those garden walls sometimes only last until spring and bite you on the bum with all sorts of issues because of water ingress, freeze thaw weather patterns and some plasterers don’t want to get involved with them?
See how it goes, you may end up happy with it when all plants are in it. Or if it falls apart next year you can re visit the project with another look/finish with more experience under your belt.
 
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