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The manhole is approx 6-7 metres away from the property. I'd have a place it in a tin which I could then lower down. But would I then cover the drains to allow the smoke to travel?

If I simply drop it in my drains or even if I could get access to the manhole (unlikely), there is a channel running at the bottom with water... Surely the smoke bomb will just go off due to it becoming wet?

Ian - I have no access to the manhole as it's on the neighbour's side. Is it worth doing the smoke test from the inside of the property, i.e. from drop the smoke pellet into that gap between the stones?

Thanks so much for your replies guys. Honestly I'm tearing my hair out trying to figure out this damn issue. Hugh - The drainage dye and camera test was done last time and nothing showed. I rang a few numbers - All have said that a smoke test for drainage is pointless, so I'm really confused...

Thanks for clarifying that Hugh. Yes my house was built approx 1935. But one thing I'm not clear about is that are you saying these salt-glazed pipes part of my existing drainage or are you saying an unused salt-glazed pipe could be running under the cellar floor? Also earlier, John asked...

Hugh - regarding the salt glazed pipes.. Where are these usually found? Yes the gap is at the bottom of the cellar floor (Approx 1.5m below outside ground level) The air that I can feel... Is it not from the brick cavity of the house? John - I did wonder that, but I don't know how to check if...

Thanks hugh. Don't forget that I've only dug down only by a couple of inches and the soil is very damp. If this was ground water, then surely I would get water from cracks in concrete on the lower part of the cellar and not the highest point? Also, I don't know if this matters, but our drain...

I've now made it more wider...Not sure if this is of any relevance, but there is a GAP under the brick wall. I can feel cold air coming from it, but no water:

Because the drivway slopes up, in order to make another pit just to reach to the cellar floor level, I'd need to dig down about 2 metres. This though mate, I'd want to do as a last resort. I'm just wondering whether it's worth digging a larger hole inside the cellar?

Hello again. I've now cleared up the old basement industrial shelves and started knocking a hole through the ground. As suggested, I've also used a long sds drill-bit (approx 45cm) and drilled multiple holes all the way down. The soil is pretty wet and stinks of damp, but no water pressure as...

As discussed, I've now cleared up the old basement industrial shelves and started knocking a hole through the ground. As suggested, I've also used a long sds drill-bit (approx 45cm) and drilled multiple holes all the way down. The soil is wet, but no water pressure as yet. How far and wide...

Thanks Nige. I won't be able to do this straight away due to being away from home. But whilst I'm waiting to get this task done, can you please tell me..... Assuming there is no leak and the water is in fact higher level ground water, what's the answer to fix this?

AGAS, what I meant to say was what if I kept digging, but never found a pipe, but there was water coming through?

Unfortunately I haven't got a water meter. How wide and deep would you recommend I dig?

You mean like a straight hole? What if there is a pipe and it leaks everywhere? I've got electric sockets and other stuff near it. Also how deep hole should I make?

Good idea. Only problem is that the previous person has put solid industrial shelving in this part of the cellar...this damp patch is hidden right underneath it, so access is difficult and may need a few days to rip it out and start digging. Few questions though: 1. Although this damp patch...

This damp patch is in the highest corner of the cellar and concrete slopes away from it.

Hi Hugh. Unfortunately, I can't see the pipe coming into the house. I followed backwards from the new stopcock and it's copper, but then this goes somewhere under the kitchen floor, to which we have no access. The possibility of a pipe leak is actually a suggestion from our member JohnD, who...

No worries crank39. Appreciate your advice. Anyway, below photo is the wet patch in the basement. It looks very large in the photo, but it's around 15in by 15in in size. At first I thought it was an oil spill, but actually, it's clean water, mixed with the dirt from the cellar floor. What...

Hi guys, As the topic suggests, I'm suspecting that our external mains leaking pipe, which is running somewhere from the main road to our kitchen. However, firstly I need to establish: What type of pipe do we have? Which path is it running along? How to check it for a leak? Can you please...