Guys, i got this damp? on my walls at an extension that was made a few years ago, now this stuff has starting comming up what is it and how do i get rid?

 

 

 

 

Looks to me like a breakdown in the DPC

 

Before going to far into it

go outside and make sure the outside ground level is not higher than the DPC

also check that you have no water running down from a major leak from the gutters when it rains heaverly also make sure there are no overflow pipes discharging water all time

 

 

Could also be the floor inside is higher than the DPC and the polytheene membrane under the screeded floor was not bridging the DPC in the wall

 

But looks to me as if none of these are happening it could be you are going to need a injected chemical DPC

Is it an ouside wall?? Are there any water pipes in the wall?

thanks guys, its the inside walls, im not sure if there are any waterpipes in the walls, how much does it cost to get a DPC injection done? im clueless when it comes to building works so havent a clue where to start, also i dont want to be ripped off. thanks.

thanks guys, its the inside walls, im not sure if there are any waterpipes in the walls, how much does it cost to get a DPC injection done? im clueless when it comes to building works so havent a clue where to start, also i dont want to be ripped off. thanks.

 

 

I had a problem like that a couple of years agao turned out the hot water feed upstairs ran under the plaster wall and it had a leak on a joint.

this extension was made so i could have a few beers, but this damp thing has started to ruin what used to look like a nice extension.

thanks guys, its the inside walls,

 

Where dose the vent behind the brass plate go to in the 3rd photo I would have thought that this was an external wall unless you have hot air central heating

Where dose the vent behind the brass plate go to in the 3rd photo I would have thought that this was an external wall unless you have hot air central heating

 

hi mate, its a vent for the external wall

hi mate, its a vent for the external wall

 

have you had a patio laid against that wall since the extention was built that is above the DPC

 

You sure when you are have a couple of bevvies that you are not p!$$ing it up the wall and this what is causing it:devil2:

is the rising damp on the original wall or the new wall of the extention

heres a pic of the outside of that vent

 

is the rising damp on the original wall or the new wall of the extention

 

 

hi mate, its on the original wall, this is seperate building that was made at the end of my garden 2 years ago.

Is it an ouside wall?? Are there any water pipes in the wall?

 

its the inside wall and i dont think there are any water pipes in the wall.

have you had a patio laid against that wall since the extention was built that is above the DPC

 

You sure when you are have a couple of bevvies that you are not p!$$ing it up the wall and this what is causing it:devil2:

 

lol no.

heres a pic of the outside of that vent

 

 

 

So the outside of the extention is rendered in sand and cement that is probably going over the dpc joint on the outside and could cause water to ingress up the rendering and over the DPC causing the rising damp inside

my advise would be an injected DPC that you should get a gaurentee with that will benifit you when you decide to sell your place on

 

when you go to sell you house later the morgage compamy is going to ask for this to be done when thier surveyor inspects the property

 

This is all IMHO

is it attached to the house or a seperate building like a garage at the back of the garden

its a seperate building at the back of the garden, took us a few years to get the permission hope its not going to crumble down lol.

definate dpc problem easiest solution is the injected route shouldn't be to dear or you could do it your self only means drilling a series of holes around the botom of the building and hiring a pump with about six pipes coming from it and injecting the wall

still would check that next door has not built up the outside ground level though