Water running underneath shed - Need help with Blockage or Channeling

[kavehh]

I have a problem with the drainage on my concrete base. It wasn't built with correct drainage slope. The damage inside is getting worse. I need to stop the water soon.

With a quick look online, I've found few solutions but not sure what would be the best considering the surface material and size and the total cost perhaps.

1) Garage Door Water barrier seal Kit. Piece of curved heavy duty plastic, guess to be screwed glued and sealed around the shed?

2) Flood barriers. They absorb water and creates a barrier. (like sandbags but with water instead of sand)

3) Creating a channel by using a dimond cutter across the shed? This is the option I want to avoid. It's going to be a lot of work , dust and I'm sure there are steel frameworks inside the concrete.


1)It'd be great to hear your opinion. What would be the best solution?
2) where exactly I need to put the barriers based on damaged area?

 

[freddiemercurystwin]

Lift each shed onto some paving slabs. The problem is the shed base is in contact with the concrete, it should be on something to raise it up, with a bit of dpm or similar in between.

 

[kavehh]

Lift each shed onto some paving slabs. The problem is the shed base is in contact with the concrete, it should be on something to raise it up, with a bit of dpm or similar in between.

Thank you. Yes I'm aware of that. It's an old shed and wasn't put together nicely. Will I risk breaking the shed/damaging it if I try to lift it?

Would you recommend any lifting technique suitable for raising the shed?

I found some recycled waterproof plastic slats that I cal lay under the shed or I can use treated timbers

Would something like this work?

Should I put the DPM under the slats on concrete or over the slats?

Thank you

 

[freddiemercurystwin]

Well there's always a risk with old sheds but provided they're lifted properly then they should be OK. You can lift a shed effectively if you have two car jacks, you need to screw a horizontal length of timber to each long side of the shed into the studs so they overhang the length of the shed, then another horizontal member beneath each of those at each end, then some suitable spacers and then a car jack or similar to lift them. Or if you can get access to four able bodied people then they can just lift it up and move it out of the way whilst you position the supports then they can lift it back into position onto the supports. DPM in between the top of the supports beneath the shed base.

Something like this:

edit: they've made the video so it won't display here but click on the play button and it should open on youtube.

 

[kavehh]

Thanks for the amazing tip. I'll try lifting the shed up. Still keen to know what's the best way to stop the water from going under the shed.

 

[freddiemercurystwin]

With bearers lifting the shed up it doesn't matter if water sits on the concrete base that's the whole reason for raising the shed.

 

[catlad]

Stanley FatMax Tradelift Lifting Clamp Installation Tool STA183550 FMHT83550-1 | eBay

1 x STANLEY® FatMax® Tradelift™ STANLEY® FatMax® Tradelift™ with push down lever, allows the user to push down on the handle for easier lifting of heavy loads vs a trigger style mechanism. 8mm per stroke. There is also an incremental lowering tab that lowers the lift plate 2.5mm per toggle for...

www.ebay.co.uk

One of these might help

 

[kavehh]

Stanley FatMax Tradelift Lifting Clamp Installation Tool STA183550 FMHT83550-1 | eBay

1 x STANLEY® FatMax® Tradelift™ STANLEY® FatMax® Tradelift™ with push down lever, allows the user to push down on the handle for easier lifting of heavy loads vs a trigger style mechanism. 8mm per stroke. There is also an incremental lowering tab that lowers the lift plate 2.5mm per toggle for...

www.ebay.co.uk

One of these might help

I saw these but wasn’t sure if I can lift the entire shed using these. If I get x4 of these , would it lift my shed ?

 

[freddiemercurystwin]

You can lift a shed like yours with two standard car jacks, no need for those Goliaths!