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Hi,
I'm hoping someone can advise whats the best way to approach a small damp problem I have. And tell me if what I'm planning is correct.
First of all the dampness seems to be just in one corner of the room. There are 3 things I've noticed that could be causing it.
1) Under the floor there was a pile of debris (Soft sand / cement stuff) bridging between the floor and the wall over the DPC.
I've removed the pile of debris in this pic, but you can clearly see the DPC.
2) On side of the wall there is about 1m where it looks like no DPC has been installed.
You can just see where the DPC stops just to the right of the middle of the photo.
3) The path outside is on a slope and on the wall where the DPC stops (as bove) the path is higher than the DPC Level
DPC line is the lower mortar line at the corner
4) The final issue I see is that the Cavity wall is filled with those grey insulation balls. These must surely be acting as a bridge across the 2 walls (Outer & Inner)
So, my plan to fix this is to use a chemical DPC in the area where there appears to be no DPC. For the outside path, rather than lower the whole path which is a major job, I was thinking of cutting a channel between the house and the slab ~12" and digging down to below the DPC Level. I would then fill the channel with Chips (hoping that any water would drain away better??)
This doesn't solve the bridging problem, but will hopefully improve the situation considerably. And knowing that the damp problem isn't a major one, I'm hoping my ideas will clear it?
Any suggestions to further help this problem will be much appreciated. Thanks in advance.
I'm hoping someone can advise whats the best way to approach a small damp problem I have. And tell me if what I'm planning is correct.
First of all the dampness seems to be just in one corner of the room. There are 3 things I've noticed that could be causing it.
1) Under the floor there was a pile of debris (Soft sand / cement stuff) bridging between the floor and the wall over the DPC.
I've removed the pile of debris in this pic, but you can clearly see the DPC.
2) On side of the wall there is about 1m where it looks like no DPC has been installed.
You can just see where the DPC stops just to the right of the middle of the photo.
3) The path outside is on a slope and on the wall where the DPC stops (as bove) the path is higher than the DPC Level
DPC line is the lower mortar line at the corner
4) The final issue I see is that the Cavity wall is filled with those grey insulation balls. These must surely be acting as a bridge across the 2 walls (Outer & Inner)
So, my plan to fix this is to use a chemical DPC in the area where there appears to be no DPC. For the outside path, rather than lower the whole path which is a major job, I was thinking of cutting a channel between the house and the slab ~12" and digging down to below the DPC Level. I would then fill the channel with Chips (hoping that any water would drain away better??)
This doesn't solve the bridging problem, but will hopefully improve the situation considerably. And knowing that the damp problem isn't a major one, I'm hoping my ideas will clear it?
Any suggestions to further help this problem will be much appreciated. Thanks in advance.