Live at the bottom of large hill with houses either side of the road. Built in 1960.
The driveway and house slope down from the road with us living on the corner of the road.
We have discovered water under the rear of our house which looks like has been a known issue for some time. We moved into the house in about 5 years ago and the previous owner had floor joist replaced. They are now showing wet rot due to damp conditions from longer term pooled water and inadequate airbricks / cross air flow in sub-floor.
We have worked out that when we get heavy rain we get water at the rear of the house about 1 to 2 foot deep in the last small section in the sub-floor. (There are a few small puddles of water further up towards the front of the house but these tend to dry out / clear away fairly quickly)
The water fills up fast within only couple hours heavy of rain.
The sub floor is 1 Meter deep and we plan to get a sump pump installed but ideally only as a short term solution.
The front drive and garden is going to be dug up and block paved and are wondering if a large deep land / French drain should be installed and pumped up to the surface drainage to stop the water getting under the house ?
This is one of those questions where the only valid answer is to get on-site advice.
There are so many variables to consider, not least of which is what to do with any water collected by the possible interceptor drain, that you really need to get a local drainage engineer or sub-floor specialist to take a look.
