Hi,
At the back of my property, there is about a 20cm wide gap from the external wall and patio paving's, this was filled with small gravel. I presume this was to form a type of French drain. however this is also higher than the Walls DPC, and I think has been causing bridging of the DPC. I have taken out the gravel to have a look (See photos attached), you can see the level the gravel was where the sir brick is shown and lover half had gravel covering it.
I was thinking of putting a drainage channel U-drain in, but I am unsure if I should have this right up against the wall to help protect the DPC, or do some thing else to protect the DPC and prevent any bridging.
Thanks
At the back of my property, there is about a 20cm wide gap from the external wall and patio paving's, this was filled with small gravel. I presume this was to form a type of French drain. however this is also higher than the Walls DPC, and I think has been causing bridging of the DPC. I have taken out the gravel to have a look (See photos attached), you can see the level the gravel was where the sir brick is shown and lover half had gravel covering it.
I was thinking of putting a drainage channel U-drain in, but I am unsure if I should have this right up against the wall to help protect the DPC, or do some thing else to protect the DPC and prevent any bridging.
Thanks