Install garage drain with sump

[jwslam]

Have some water pooling issues in my attached double garage.
Was thinking to get a 20ft long line drain and a sump installed which I could just dump out periodically.

Any recommended installers and how much it might cost?

Not really interested in installing a line to sewer since I assume costs would be astronomical since this isn't part of initial construction.

[schurchill39]

Can you even do that in the city? When I was looking into it for my detached garage in 2014 I could not install any sort of drainage in a garage, but maybe I am misremembering.

[ExtraSlow]

#interested

[goldfish168]

Check out Concrete Innovations. Get a quote and report back
https://concreteinnovations.ca/pages...e+Solutions/52

[bjstare]

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Can you even do that in the city? When I was looking into it for my detached garage in 2014 I could not install any sort of drainage in a garage, but maybe I am misremembering.

I don't have a lot to contribute for OP, but my parents rebuilt their detached ~10 years ago (maybe a bit more?) and it's got a drain. They also have a black water drain (goes to sewer somehow, obvi) in their rv parking area.

[jwslam]

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Check out Concrete Innovations. Get a quote and report back
https://concreteinnovations.ca/pages...e+Solutions/52

I emailed them around Xmas and they didn't get back for 2 weeks quoting too busy for a bit and asking me to call back for a on-site quote later.

[jutes]

I had the same issues, just bought a large squeegee and cleared the water manually. Cheap/lazy alternative?

[jwslam]

Squeegee solution is a lot of cold work on my part... plus north driveway means I just end up with ice everywhere outside

[90_Shelby]

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Have some water pooling issues in my attached double garage.
Was thinking to get a 20ft long line drain and a sump installed which I could just dump out periodically.

Any recommended installers and how much it might cost?

Not really interested in installing a line to sewer since I assume costs would be astronomical since this isn't part of initial construction.

I simply drilled 6-8 1/2" holes in the pad where water pooled in one of my garages, problem solved.

[SJW]

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Can you even do that in the city? When I was looking into it for my detached garage in 2014 I could not install any sort of drainage in a garage, but maybe I am misremembering.

I have drainage in my garage. I bought it like this. I'm sure it's legal if done right.

[schurchill39]

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I have drainage in my garage. I bought it like this. I'm sure it's legal if done right.

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I don't have a lot to contribute for OP, but my parents rebuilt their detached ~10 years ago (maybe a bit more?) and it's got a drain. They also have a black water drain (goes to sewer somehow, obvi) in their rv parking area.

Never mind me OP, apparently I just dreamt up that restriction (likely to dial back my scope creep at the time)

[jwslam]

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I simply drilled 6-8 1/2" holes in the pad where water pooled in one of my garages, problem solved.

can't tell if this is a troll post...
so you went all the way through the concrete into soil?

[gpomp]

Concrete Innovations did Rick's garage. $300 discount code here...

https://www.radgarage.ca/drainage.html

[90_Shelby]

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can't tell if this is a troll post...
so you went all the way through the concrete into soil?

No trolling. I drilled through the ~4" of concrete with a hammer drill to allow the pooling water to drain. This was a garage that I built new.

At my current house, garage was built ~40-50 years ago, the previous owner did the same thing. He drilled a few random holes in the floor to allow the pooled water from melted snow to drain through the concrete.

[killramos]

If I was to do this I would see if you can’t get the sump a couple feet down so as to be able to hopefully free drain.

I assume The frost line under a heated garage isn’t very deep.

Basically the “drill a few holes” technique on a bigger scale.

[ExtraSlow]

The cheapskate in me is intrigued.

[90_Shelby]

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If I was to do this I would see if you can’t get the sump a couple feet down so as to be able to hopefully free drain.

I assume The frost line under a heated garage isn’t very deep.

Basically the “drill a few holes” technique on a bigger scale.

Is there frost under a heated garage? Serious question. It would likely freeze around the perimeter but how far does it extend under the pad? For my scenario, the water on the floor hasn't frozen and the holes don't clog with ice so it hasn't really mattered in my garages.


To clarify my simple holes in the pad, by no means is this a "drain" in a plumbing sense, you can't have a sink or shower with flowing water running under your foundation. This is strictly for melt water from a car.

When I first did this in my 4 car garage, water was pooling at the dividing wall between the two sides of the garage. The alternative to drilling holes was pooled water under a 2x4 wall which would eventually rot the wood and ruin the drywall. The holes have been there for 10 years, zero issues, no pooling of water.

[XylathaneGTR]

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Not really interested in installing a line to sewer since I assume costs would be astronomical since this isn't part of initial construction.

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Can you even do that in the city? When I was looking into it for my detached garage in 2014 I could not install any sort of drainage in a garage, but maybe I am misremembering.

When I was building last year, I asked our architect and builder about this. They said City doesn't allow such connections due to potential for contamination to enter sewer system / waste water outflows (e.g. oil spills, etc.). Presence of such a thing would not pass pre-possession city inspection.

I'm sure code/requirements have evolved over time. Not surprised to hear of existing homes with this, but was told new-build was a strict no-go.

[Swank]

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I had the same issues, just bought a large squeegee and cleared the water manually. Cheap/lazy alternative?

That's what I do, a lot has to do with so many places where it pools so one drain wouldn't cut it, and cheap/lazy are the other factors. Mudjacking is not worth it to me to fix the low spots, but that's a whole other topic.

[TomcoPDR]

Consider using slot drain instead of grates, imho, for small household garage. https://www.slotdrainsystems.com/products And they have catch basin options, with pull out dirt baskets.. Commercial 2 compartment sumps are $$$$, usually nobody would physically scoop shit out, till it's too late and full, then those vacuum trucks are like $500-800 per call.

You're probably just a 4" slab correct? If u aren't tying into sewer (dry sump) (disclaimer, I don't know code if dry sumps are allowed)... consider just DIY, rent a walk behind concrete saw, it'll cut like butter, hammer drill re-bar, rent one of those u-haul-concrete to fill the gap (the cavity between the dug trench, to the drain product)... boom done