Leaking wall

[hally]

I have a cattle shed dug into a bank with a shuttered concrete retaining wall. However one bit has a vertical crack in it 3 foot high and it’s letting water into the shed during periods of high rainfall like yesterday. when the shed is emptied is there anything that can be painted or trowelled onto the crack to seal it and hold the water back? Tia.

 

[upnortheast]

Are you able to dig it out from the outside. Probably more successful sealing on the outside

 

[DrWazzock]

Quite a range of grouts and resins available nowadays. Clean, shutter/seal the front, pour it in. I’ve used Fosroc products before now under stanchion foot plates to create a tight gap fill. You would need to speak to them or a distributor to see what’s suitable. Getting it clean will probably be the biggest challenge though maybe blast it out with a pressure washer. The products seem expensive but you don’t need much.

 

[hally]

Are you able to dig it out from the outside. Probably more successful sealing on the outside

Big job, surrounded by trees and steep above the shed

 

[DrWazzock]

Maybe try brushing Flexacryl roof sealant in when it’s dry in the summer along with some packing. Depends how big the gap is though. Lay a bicycle inner tube in it and inflate it?
Not an easy one from the inside.

 

[Ukjay]

 

[Exfarmer]

It is very difficult to control a leak from the inside, when the water ressure is pushing in.
if it was me I would try cleaning our the crack as deep as possible with a grinder preferably cutting wider inside than out if you follow. Then use a silicone Waterproof grouting . However you do risk making the job worse. Do not use a grouting which goes hard as it will probably just crack again

 

[Lincs Lass]

Could the wall be Tanked like a cellar way ,spot sealing a crack from the inside is much the same as using a sticking plaster to cover a damage blood vessel ,,alot of external pressure will eventual force its way through again

 

[Farmer 83563]

Try CT1 - really useful stuff https://www.ct1.com/our-products/ct1/

 

[essexpete]

Does water push up from where the base meets the retaining wall?

 

[Stw88]

Concrete panel sealant?

 

[thesilentone]

Only one way, dig it out and put in a liner to a drain. Once this one is fixed it will happen elsewhere.

Putting a sealant on the inside is temporary only.

 

[Nukemall]

Tanking slurry I have used this to line slurry pits, and a friend used it in his cellar and pit in his garage It is incredible stuff, his cellar and pit have been dry for 5 years now after years of trying different solutions. You can mix it with cement to fill cracks, then paint a mixture of it over the entire surface. It works with water pressure from both sides of the treatment face. Relatively cheap as well.

 

[diggerjones]

Remember installing concrete manhole rings(the ones you climb down into). When you had joined 2 rings together and there was water seaping in. We would get an sbr additive mix with cement into paste then push it into joint. We would go all the way round just leaving one spot where the water came in. Then next day push a bit of clay in and seal up with more paste.

 

[hally]

Does water push up from where the base meets the retaining wall?

No not really, just water building up behind the wall in a really wet time

 

[Sid]

Maybe try brushing Flexacryl roof sealant in when it’s dry in the summer along with some packing. Depends how big the gap is though. Lay a bicycle inner tube in it and inflate it?
Not an easy one from the inside.

Thats what I use on concrete gutters. Great stuff

 

[Breakthru]

I would try Travis Perkins postcrete. Make sure crack is clean with pressure washer then mix it up and trowel it in. More water the merrier. It heats up and sets in about ten minutes. Make sure you have enough to fill the crack in one go as it will stick to anything other than itself after its set. Have used it in concrete yards where an artic ran over 10kg of it in a hole after 20 mins. Only left tread marks on surface which were smoothed out after. Has had forklifts turning on it for last 3 years. As stated leave it proud as you can't add any more later any traffic just cracks the new surface layer. Bought some the other day £7.00 for 20kg + Vat cash sale no account.

 

[Hard Graft]

I have a cattle shed dug into a bank with a shuttered concrete retaining wall. However one bit has a vertical crack in it 3 foot high and it’s letting water into the shed during periods of high rainfall like yesterday. when the shed is emptied is there anything that can be painted or trowelled onto the crack to seal it and hold the water back? Tia.

how wide is the crack or post a picture as a friend works in this feild and i think there is a couple methods that will be very simple to do

 

[hally]

Hope this helps

 

[hally]

Dried up know but running like a tap full on day before yesterday
Just does it a couple of times a winter but makes a bloody mess when it does