Water Leaking into Garage

[Deluks]

A solid week of rain later in the year, and it could remain damp for months.

 

[cdbe]

I did my slightly sunken garage a few years ago

Thanks @cdbe. Really appreciate it. So it would be a case of adding some SBR to the mortar mix suggested above and using that to replace what's there/adding to steps? Or is there a different ratio you'd recommend?

Do you still reckon it's worth adding something afterwards too for additional waterproofing?

Also Is there any particular SBR you'd recommend and what ratio would you suggest?

Appreciate this will all potentially be a sticking plaster, but if I can make it semi usable for a couple of years whilst we figure out what to do with it, I'd be happy.

Cheers.

One SBR is pretty much the same as another. The instructions should tell you how to use it as a tanking slurry and as a waterproof mortar additive.
I used 3:1 sharp sand and cement, my fillet was about 2" deep and high. The working time is short so it's really a case of mixing a small tub of slurry, painting it on, mixing some mortar and getting it down and working your way along. I don't really know what magic is in SBR but it also makes mortar more flexible so it doesn't crack - mine certainly hasn't after about 10 years.

 

[jroy_998]

I did my slightly sunken garage a few years ago

One SBR is pretty much the same as another. The instructions should tell you how to use it as a tanking slurry and as a waterproof mortar additive.
I used 3:1 sharp sand and cement, my fillet was about 2" deep and high. The working time is short so it's really a case of mixing a small tub of slurry, painting it on, mixing some mortar and getting it down and working your way along. I don't really know what magic is in SBR but it also makes mortar more flexible so it doesn't crack - mine certainly hasn't after about 10 years.

Fair enough. I've seen a few options so I'll plump for one.

So you'd mix a slurry with the SBR, paint it on then put the mortar on afterwards, in small stages? Do you just use SBR in the slurry, or add some to the mortar to? Was the 3:1 sand and cement mix referring to the mortar you were mixing or the slurry?

Apologies for all the questions btw. I'm happy to tackle a job like this myself, but just want to know I've got all the mixtures/ordering right.

Thanks again

 

[jroy_998]

A solid week of rain later in the year, and it could remain damp for months.

That's what I'm worried about. I can live with a little, but that would make the space pretty much useless. We're going to be doing something else with it long term anyway, but ideally we'd like it to be a semi usable space for a few years.

 

[cdbe]

Instructions on the tub - I think slurry is 5 cement to 1 slurry, mortar is 3:1 sharp sand to cement with whatever SBR the instructions say - it adds strength, water resistance, flexibility and stickyness.