We bought this 3-bedroom end of terrace house and decided to have a side and back extension done. This is how the back garden looked like before the extension.
Unfortunately since we had the work done we have had problems with rain surface water in the back garden and also under the concrete floor in our extended kitchen. This problem occurs when it rains. (see pics)
The area we live in is predominantly clay (see pics) but we have never had this problem before we extended and our neighbours do not get flooded like us (see pics).
I have dug two holes approximately 1 metre deep and every time it rains the holes fill up full of water and the water is not being absorbed at all and if so very slowly. (see pics).
We tried fitting a soakaway which did not solve the problem as the clay did not allow the water to soakaway properly and therefore the water had nowhere to go.
I guess tiling most of the garden has not helped the situation but we have fitted Drainage channels to the rear of the extension which direct all the water to the main sewer (this is allowed in our area).
A guy came around with a mini digger and duck out about 50cm of clay and laid some limestone. We are thinking of laying about 50cm of topsoil and lay a lawn. Will this be enough or should we dig the whole lot by one metre, fill it with top soil, fit a pump which will be directed to the main sewer and have more drainage channels around the perimeter of the intended lawn so that rain water does not flow from the tiles into the new lawn.
We have really run out of ideas and was wondering if anyone has experienced something similar. Any advice would be appreciated.
Unfortunately since we had the work done we have had problems with rain surface water in the back garden and also under the concrete floor in our extended kitchen. This problem occurs when it rains. (see pics)
The area we live in is predominantly clay (see pics) but we have never had this problem before we extended and our neighbours do not get flooded like us (see pics).
I have dug two holes approximately 1 metre deep and every time it rains the holes fill up full of water and the water is not being absorbed at all and if so very slowly. (see pics).
We tried fitting a soakaway which did not solve the problem as the clay did not allow the water to soakaway properly and therefore the water had nowhere to go.
I guess tiling most of the garden has not helped the situation but we have fitted Drainage channels to the rear of the extension which direct all the water to the main sewer (this is allowed in our area).
A guy came around with a mini digger and duck out about 50cm of clay and laid some limestone. We are thinking of laying about 50cm of topsoil and lay a lawn. Will this be enough or should we dig the whole lot by one metre, fill it with top soil, fit a pump which will be directed to the main sewer and have more drainage channels around the perimeter of the intended lawn so that rain water does not flow from the tiles into the new lawn.
We have really run out of ideas and was wondering if anyone has experienced something similar. Any advice would be appreciated.
