Drain repairs

[oldoakknives]

Hi
Does anybody have any experience of repairing a possible collapsed drain without digging a trench etc?

I'm looking at methods where they insert a liner inside the damaged pipe which is impregnated with resin, this then dries and performs the repair....

If anyone has done this or had it done I'd be interested in any feedback, pros and cons etc

Cheers


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Yes, we had that done at the previous (old) property we lived in. It was a tree root (they love water) that had damaged the waste pipe from a downstairs wc. The drainage guys managed to cut away the roots and then inserted one of said resin liners. They had to remove the wc and then replace it when the job was done. SWMBO's niece lives there now and as far as I know it's been ok ever since. I thought it was a pretty clever solution. House insurance paid for it.

[MCFastybloke]

If the drain is collapsed and a restriction to the flow or capacity has occurred the liner method will not ease this, it cannot push back the pipe into shape. The load causing the collapse will remain in place and could cause more issue in time.

If is just cracked and products are leaching away into the soil then the liner is fine.

[Maysie]

If the drain is collapsed and a restriction to the flow or capacity has occurred the liner method will not ease this, it cannot push back the pipe into shape. The load causing the collapse will remain in place and could cause more issue in time.

If is just cracked and products are leaching away into the soil then the liner is fine.

There are methods nowadays where a 'mole' and resin liner are used in combination to repair this type of failure. Not all drain repairers have this tech though.

[adrianw]

We had a collapsed drain in the car park a few years ago, every few weeks it would back up, I used a company called Metro Rod, they blew a polythene tube down the pipe and then pumped in fibreglass, then pumped hot water through to cure it, it was about 30 metres long and took them about half a day, from memory it wasn't stupidly expensive, and fixed the problem, obviously it reduced the size of the pipe a little but it wasn't an issue, it was in Essex

I should add they did send a camera down first

[Maysie]

I should also add that these resin relining repairs are usually very good, but are only as good as the crew installing them.

I am not a huge fan of local patch repairs for drains, but prefer instead to line between access points (eg manhole chambers), so the whole length of the damaged area of drain, if you can and assuming it is not cost prohibitive to do so.