Weber Pral M - Large Patch of Different Colour Render

Wiltslass

New Member
Hi Guys
Wondering if you might be able to help as I feel we are out of depth at the mo - have had numerous calls with Weber technical but am hoping you might be able to help!
Earlier in the year we had all the render removed from our house and Weber Pral M in Ivory applied. At first happy with the finish but when the scaffold was removed, we noticed a large patch of different colour render - at first we thought it was a damp patch, as is several shades darker than the rest of the house, however, the guy that applied it has said was a bag of render with a different batch number that has caused the issue - he has agreed to put right.
But, this is the problem, working out how to rectify.
Was first suggested that we paint the problem area but Weber have advised me that only painting one section will be a difference in texture and be noticeable - the render has said he won't paint the whole house as it is only one section that is a different colour - we obviously spent a pretty fortune on this so want the whole house to look the same. Renderer bought up a board of render, which he had painted (over the top of Pral M) in Weber paint but it was massively different in colour (even though it was supposed to be Weber Ivory paint.

Was also suggested that he hack off the render of the problem wall but, this was all part of a big renovation project - new windows, new lower roofs etc, we are concerned that this will cause more damage and really want to avoid this option if possible.

So now he is suggesting rendering over the top of the whole wall that is the different colour - I'd be really interested to hear any views on rendering over the top of fairly new render/ is this a good idea/ what should we be aware of? We are a semi-detached house so I'm particularly concerned how we avoid a "step" where the two houses meet. Would you suggest any other solution to getting this problem sorted??

Our rendered is trying to sort for us but I suspect, despite saying that he has rendered lots before that he has not done many before - we are generally pleased with how the reset of the house looks, its just really unfortunate that where this discoloured patch is right above the front door, so sort of smacks you in the face as you walk up the path
Any thoughts/ advice massively appreciated.

PS - if any one has regularly used Weber Pral M in Ivory - would you say this is Ivory?? We were expecting it to be a lot lighter, he said that it would get lighter but still seems very "cream" to us??
 

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Painting the elevation with Weber sil p will solve this problem as it doesn't put a sheen on as other masonry paints can do.
The texture won't change as it's basically an external colourwash.
If you Google Rendit, they specialise in this sort of repair.
 
Paint it with Weber that’s your best option
Just that panel not the whole house
 
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Thanks for all the replies - most of you are suggesting painting over the top of the existing render - has anyone got a view of rendering over the top on that front face? Have you done this and what should we be aware of?
Thanks
 
Why would you render over when you can simply put an equalizing solution over which are absolutely spot on colour wise?
Pitfalls for over rendering would be stop beads on external corners on view,also scaffolding,'re bead, Rendaid keycoat and Mono top coat. Also consider if window reveals can be 're beaded without impeading openings.
 
If it’s a batch issue how can the application be at fault
Seems he getting the blame, comment further up saying they don’t think he’s done much rendering. Job looks tidy apart from that patch. I’ve never, ever, gone through every bag to make sure same batch number and I doubt anyone else on here has so the blame has to lie with Webber.
 
Seems he getting the blame, comment further up saying they don’t think he’s done much rendering. Job looks tidy apart from that patch. I’ve never, ever, gone through every bag to make sure same batch number and I doubt anyone else on here has so the blame has to lie with Webber.
Weber won’t sort that it’s nothing to do with them .
Why would you render over when you can simply put an equalizing solution over which are absolutely spot on colour wise?
Pitfalls for over rendering would be stop beads on external corners on view,also scaffolding,'re bead, Rendaid keycoat and Mono top coat. Also consider if window reveals can be 're beaded without impeading openings.
Thank you for your reply - that's really helpful - so you'd go with an equalizing coat over the top - by that do you mean Weber Pral P paint? Or is an equalizing coat something else - sorry for being a bit ignorant. thanks
 
Contact Rendit, they will help here with the product and can also apply if necessary.
It's like a paint but drys very matt like the render finish.
 
If he hand applied I wouldnt be surprised if he used dirty water or dropped his hot bovril in the tub and thought f**k it
 
Seems he getting the blame, comment further up saying they don’t think he’s done much rendering. Job looks tidy apart from that patch. I’ve never, ever, gone through every bag to make sure same batch number and I doubt anyone else on here has so the blame has to lie with Webber.
That’s what I said not application
 
Can’t believe there’s guys on here saying it’s not Weber’s fault, it 100% is Weber’s fault.
My phone screen probably isn't good enough to view detail clearly , not done Webber , did a lot of hand applied Tyrolese and always checked batch no's , if different would blend for a separate section , water content could also make a difference.
If this was hand applied would you expect the outline of patch to look like this or slightly more blended ?
 
My phone screen probably isn't good enough to view detail clearly , not done Webber , did a lot of hand applied Tyrolese and always checked batch no's , if different would blend for a separate section , water content could also make a difference.
If this was hand applied would you expect the outline of patch to look like this or slightly more blended ?
Why check batch numbers this shouldn’t be a problem if material ordered for job ? If machine applied I think it’s consistent with rouge bags ? Water content wouldn’t cause this and would see texture differences
 
Why check batch numbers this shouldn’t be a problem if material ordered for job ? If machine applied I think it’s consistent with rouge bags ? Water content wouldn’t cause this and would see texture differences
And
If this was hand applied would you expect the outline of patch to look like this or slightly more blended ?
 
If hand applied why’s water a factor ? I don’t think this is hand applied as couloir solid
Was thinking of lime bloom effect by over wet mix , just a point out of curiosity
If this is hand or machine applied would you expect the outline to be representative of its laying on pattern , would expect a more blended contrast
 
Was thinking of lime bloom effect by over wet mix , just a point out of curiosity
If this is hand or machine applied would you expect the outline to be representative of its laying on pattern , would expect a more blended contrast
Why would you ? What pattern you expecting
 
Why would you ? What pattern you expecting
If I was laying on by hand and was running out of mix I wouldn't leave a big circular shape like that , maybe I'm more methodical , just seems an unusual shape
And if going on by machine I certainly wouldn't expect that pattern of change of batches
 
If I was laying on by hand and was running out of mix I wouldn't leave a big circular shape like that , maybe I'm more methodical , just seems an unusual shape
And if going on by machine I certainly wouldn't expect that pattern of change of batches
You wouldn’t know your mixing batches would you ? If sprayed you would see different material when finishing
 
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