dampness???

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Daviebhoy

Daviebhoy

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Have any yous guys seen dampness like this just spots everywhere throughought house. House has all been roughcasted. Old loose roughcast had been cut of but they have went over the top of the existing roughcast. You can't smell dampness in house but gradually getting worse.
 

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Daviebhoy said:
Have any yous guys seen dampness like this just spots everywhere throughought house. House has all been roughcasted. Old loose roughcast had been cut of but they have went over the top of the existing roughcast. You can't smell dampness in house but gradually getting worse.
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Rough cast? Internal or external and is it it on every wall?
 
Pretty much every outside wall .yeh house has been fully roughcasted but only the loose was taking of and then it was re roughcasted. I'll try get few pics tomorrow.
 
Danny said:
is the wall cold?
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I'm guessing yes. Rough cast was '30s or '40s 9" brickwork so I'd say it'll be cold wall and condensation from inside rather than water penetration from the outside.

Obviously based on nothing more than guesswork. :-)
 
Daviebhoy said:
Have any yous guys seen dampness like this just spots everywhere throughought house. House has all been roughcasted. Old loose roughcast had been cut of but they have went over the top of the existing roughcast. You can't smell dampness in house but gradually getting worse.
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It could be the mix they used for the roughcast, maybe this could be the effects of putting a waterproofer in your top coat? Think about it for a second it's quite simple and I've had this debate a few times on here, but we never discuss the problems. I put a waterproofer in my scratch, non in the top so when it rains the water will soak into the top coat but not get past the scratch, because it's not driving rain at that point. The rain stops, it dries out of the top coat and so on but if you have it in your top and scratch or like some have said non in the scratch only in the top. The driving rain will get in because it's not completely waterproof then the rain stops and it can't get out because it's not driving rain so will take a lot longer to dry which will keep your house nice and cold which will attract mould and similar to the pics, thoughts :) and be nice xx
 
flynnyman said:
It could be the mix they used for the roughcast, maybe this could be the effects of putting a waterproofer in your top coat? Think about it for a second it's quite simple and I've had this debate a few times on here, but we never discuss the problems. I put a waterproofer in my scratch, non in the top so when it rains the water will soak into the top coat but not get past the scratch, because it's not driving rain at that point. The rain stops, it dries out of the top coat and so on but if you have it in your top and scratch or like some have said non in the scratch only in the top. The driving rain will get in because it's not completely waterproof then the rain stops and it can't get out because it's not driving rain so will take a lot longer to dry which will keep your house nice and cold which will attract mould and similar to the pics, thoughts :) and be nice xx
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Or the inside work has been plastered in Hardwall ,or bonding ,if its a cavity very rare the outside will cause damp on the inner leaf on all walls
 
flynnyman said:
I read it, this has happened since its been re-rendered so opening a window won't solve it because a problem has been created. Another human error that someone will diagnose as rising damp?
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im thinking they've used waterproofer in the roughcast and sealed it in the brick work so can only come into the house
 
Lots of poured concrete houses round our way. Most suffer with damp. Another vote for increasing ventilation from me.
 
If it was my house and the plasterer told me to open the windows when I didn't have a problem before I wouldn't accept it would you? I've noticed loads of houses with mould on the outside which should be on the inside or maybe it's both I wouldn't know. It's always pickled my head and it's something as simple as a waterproofer in the top coat or on most occasions it has a high build type finish on it which is stopping it drying which keeps the wall constantly cold, and also wet on nice days which encourages mould to grow.
 
flynnyman said:
If it was my house and the plasterer told me to open the windows when I didn't have a problem before I wouldn't accept it would you? I've noticed loads of houses with mould on the outside which should be on the inside or maybe it's both I wouldn't know. It's always pickled my head and it's something as simple as a waterproofer in the top coat or on most occasions it has a high build type finish on it which is stopping it drying which keeps the wall constantly cold, and also wet on nice days which encourages mould to grow.
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Alright alright, we go with your explanation for now [emoji106]

Sent from my Nexus 6P using Tapatalk
 
zolco said:
Alright alright, we go with your explanation for now [emoji106]

Sent from my Nexus 6P using Tapatalk
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its not my explanation for just this wall it's a real problem and this could be the cause, I was opening a debate on the subject not trying to win something lol that's why we go round in circles in denial lol
 
flynnyman said:
If it was my house and the plasterer told me to open the windows when I didn't have a problem before I wouldn't accept it would you? I've noticed loads of houses with mould on the outside which should be on the inside or maybe it's both I wouldn't know. It's always pickled my head and it's something as simple as a waterproofer in the top coat or on most occasions it has a high build type finish on it which is stopping it drying which keeps the wall constantly cold, and also wet on nice days which encourages mould to grow.
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Do u put waterproofer in ur top coat flynny? Ive always put it in scratch and top..
 
I wonder if rwf007 got a video relating to this subject

Sent from my Nexus 6P using Tapatalk
 
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