Damp

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carys

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I went to see this job the other day and it had damp problem .The first thing I notice was broken guttering that did not help but it been sorted.But iv notice some rising damp .Over the years I've got the so called expert to inject the walls .Is it possible just to tank walls to meter high give it a scratch coat whith sbr whithout injection the walls.Does anybody think il have a come back ? .Some one told me from one of the expert damp firms that the damp will raise above the tanking .ok point taking but I thought raising damp only raise to a meter high so how can we have problems over that meter?.
 
The 1 m is just a rule of thumb pal.. I regularly go to jobs where the contamination is higher..... and also jobs that have been dpc'd and they have taken just 1m off instead of going 300-500mm past any signs of damp and you end up with a salt band around the room.... If you are going to the trouble of knocking the plaster off why not inject it.....
 
brimplas1 said:
The 1 m is just a rule of thumb pal.. I regularly go to jobs where the contamination is higher..... and also jobs that have been dpc'd and they have taken just 1m off instead of going 300-500mm past any signs of damp and you end up with a salt band around the room.... If you are going to the trouble of knocking the plaster off why not inject it.....
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Ok m8 point taken is that silicon gun any good to inject or is it better for me to get a firm in ?
 
The silicone emulsion into the mortar bed is the way to go bud.... and treat the wall with an anti salt solution before rendering .....
 
When tanking you should do at least 1.5m above external ground
Level or 500mm past last sign of damp. Which ever is greater.
Leave a good inch channel at the base of wall to stop bridging as well.


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carys said:
I went to see this job the other day and it had damp problem .The first thing I notice was broken guttering that did not help but it been sorted.But iv notice some rising damp .Over the years I've got the so called expert to inject the walls .Is it possible just to tank walls to meter high give it a scratch coat whith sbr whithout injection the walls.Does anybody think il have a come back ? .Some one told me from one of the expert damp firms that the damp will raise above the tanking .ok point taking but I thought raising damp only raise to a meter high so how can we have problems over that meter?.
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have you checked the cavity??
 
Arti said:
have you checked the cavity??
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Have you seen them cameras you can get from China that connect to your phone? They are about a couple of foot long to 7 metres like a tube with the camera on the end ideal for drilling into a cavity and checking it out I recon. They have an attachment on the end that has a mirror so you can spin it in the cavity and look a bit like them things they used to look over the walls at the football matches in the 50s. My mates got one and he paid about £7
 
Jgreenplastering said:
When tanking you should do at least 1.5m above external ground
Level or 500mm past last sign of damp. Which ever is greater.
Leave a good inch channel at the base of wall to stop bridging as well.


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Click to expand...

Stop what bridging??? Please explain
 
flynnyman said:
Have you seen them cameras you can get from China that connect to your phone? They are about a couple of foot long to 7 metres like a tube with the camera on the end ideal for drilling into a cavity and checking it out I recon. They have an attachment on the end that has a mirror so you can spin it in the cavity and look a bit like them things they used to look over the walls at the football matches in the 50s. My mates got one and he paid about £7
Click to expand...


I was looking at them last night and ordered one
 
flynnyman said:
Have you seen them cameras you can get from China that connect to your phone? They are about a couple of foot long to 7 metres like a tube with the camera on the end ideal for drilling into a cavity and checking it out I recon. They have an attachment on the end that has a mirror so you can spin it in the cavity and look a bit like them things they used to look over the walls at the football matches in the 50s. My mates got one and he paid about £7
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I won't tell you how much I paid for a borescope....... Great bit of kit though

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Technology is putting a lot of people out of work and the Chinese are helping
Arti said:
Mega pretty.....doubt it's as good as the £7 one though

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is there any difference? I could of done with one the other week, I was using my phone as a torch under a floor to cut some radiator pipes and dropped it down the cavity :(. These can be used as a torch and a camera
 
I was prepared to knock the house down good job they wasn't in lol and I could look down the cavity and see the torch on then the c**t starts ringing lol
Damp
Damp
 
brimplas1 said:
The 1 m is just a rule of thumb pal.. I regularly go to jobs where the contamination is higher..... and also jobs that have been dpc'd and they have taken just 1m off instead of going 300-500mm past any signs of damp and you end up with a salt band around the room.... If you are going to the trouble of knocking the plaster off why not inject it.....
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How does injection a wall stop damp from raising. ?
keithuk said:
If its tanked ,it cannot "bridge "
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what tanking product do u use m8 I've used so many I don't cat tell u which one best lol
 
carlos said:
Stop what bridging??? Please explain
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If you have solid floors and only tank the wall if you render and skim to the floor then the moisture will soak through the finish plaster which is called bridging.
More common to do and part of the spec when injecting but most plasterers who are 'damp proofers' don't account for the floor when 'sorting' damp in people's homes.


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Jgreenplastering said:
Please do.
I thought your a master machine mono man and this sort of thing is below you?!


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My Father owned a Timber/Damp company for over 25 years ,which I worked for on and off . As for machine rendering yes been doing that for about 10 years , I never think it's good to stand still to long , more so as you get older


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keithuk said:
My Father owned a Timber/Damp company for over 25 years ,which I worked for on and off . As for machine rendering yes been doing that for about 10 years , I never think it's good to stand still to long , more so as you get older


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Click to expand...

Right so you know I'm not wrong in what I'm saying.
Or can the bridging I'm explaining not happen at all?


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Jgreenplastering said:
If you have solid floors and only tank the wall if you render and skim to the floor then the moisture will soak through the finish plaster which is called bridging.
More common to do and part of the spec when injecting but most plasterers who are 'damp proofers' don't account for the floor when 'sorting' damp in people's homes.


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Click to expand...
ok inject a brick wall ok .but I've seen so many inject stone walls to me that a fuking joke.And some times I think does it work on brick
 
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