Surface Water Issue

Question

Since my neighbour had artificial grass installed I seem to be getting damp patches on my property which are now showing on the external wall, and some puddles at the boundary  between our gardens.
I've been in the house for seventeen years, the artificial grass was installed two years ago and the problems started showing at the turn of this year. 
The buildings are on a slope with our house lower than next door. 
I don't think there was any drainage installed with the artificial grass and I think we're getting much more run off than previously. 
At the front of the house I dug down to the water in / out and there was no sign of leakage. 
The damps is at both front and back, as is the artificial turf.
I'm trying to find out which trade would be able to diagnose this so I can employ someone to investigate and provide professional advice on what's causing the damp areas / puddles.

Kane · Answer

Drainage engineer would be required, I do all drainage related problems and repairs.

Darren · Answer

Good morning, from the information you've provided I'm guessing that the issue is down to the fact that when installing the astroturf the ground would have first been compacted before laying the turf, so any water that would normally soak away in your neighbours garden is now running off and down into your garden. A land drain. (Perforated pipe and gravel) being installed to allow surface water to be directed into a soakaway or exiting drain should resolve this issue. Hope this helps. Cheers,  Daz @ swift groundworks.

John · Answer

The trade I would advise would be damp and drainage - which we cover. 
It would seem that dependent on the over site of which the artificial grass is laid on it has become compacted. Artificial grass allows water through but if the material it is laid on becomes compacted it will allow the water to flow to the nearest point of exit - which because you are below would be you unfortunately. 
There are many options to solve this but would solely depend on the materials used.

Trevor · Answer

By the sounds of it you will need a CCTV on your drain line to see where your drain lines go to, once you know the condition of your drain lines and have a plan of them you can then work out the best course of action to take to be able to get rid of the surface water.
Regards,
TT Drainage.

Karl · Answer

Hi, I would be very surprised if it was down to the artificial grass as the grass has small perforations to release the water. if this problem carries on I would consider putting acro drains alongside the house, or even dig down for a soakaway, hope this helps, many thanks.

Sami · Answer

I assume they have put plastic sheeting instead of fabric membrane. This is why when it rains it more then likely holds the rain water.

Or there is a lot of clay underground.

Paul · Answer

From the information you have provided it sounds like you require aco drainage to be installed to carry any rainwater or groundwater away from your property (generally to a natural soakaway or storm drain.) The trade you require would be either groundworks or a drainage specialist. I hope this reply to your question helps. You could even go as far as contacting your home insurance Insurance company or your water supply provider to investigate further and maybe get them to contact your neighbour and explain the issue as it sounds like the work they have had done has had a negative impact on your property that could cause damp or even subsidence to your property leading to very expensive repairs. In short, the sooner you get this resolved the better because water can cause untold damage.  Hope my information helps.
All the best. Paul. PJK Water Services

Jordan · Answer

As a drainage firm, we will be able to conduct a CCTV survey of your drainage and your neighbour's drainage to ensure nothing is leaking. We would then be able to conduct a site survey looking over property heights and run off how the artificial grass was installed as to whether any drainage was installed or needs to be installed. We are able to supply and install products to help with water diversion, and weatherproofing products for external brickwork. Kindest regards.

Surface Water Issue

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