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re: why are french drains so expensive?

Posted on 4/3/18 at 5:58 pm to
Posted by crimsonsaint
Member since Nov 2009
37653 posts
Posted on 4/3/18 at 5:58 pm to
quote:

no trees or roots but a good bit of rock underground.


Lol. Video yourself trenching through rock.
Posted by Pectus
Internet
Member since Apr 2010
67302 posts
Posted on 4/3/18 at 6:04 pm to
Holes in the drain pipe go on the bottom.
Posted by CarRamrod
Spurbury, VT
Member since Dec 2006
58265 posts
Posted on 4/3/18 at 6:42 pm to
quote:

finally a decent answer.

what was so hard about it? did you rent a trenching tool?
yes I did but I hand dug the trench around the patio slab 12-18in wide. A trencher is only going to give you a crude 6in trench. Plus a trencher in soggy LA soil doesn't want to work too well.
Posted by doubleb
Baton Rouge
Member since Aug 2006
41607 posts
Posted on 4/3/18 at 6:46 pm to
Any UG drain pipe needs to be 6" for that reason. It carries twice the water of a 4 inch pipe and is less likely to silt up.

Go 6"

The labor and excavation is the same, materials slightly more.
Posted by DrownEmTide
Hueytown, Al
Member since Nov 2015
183 posts
Posted on 4/3/18 at 6:49 pm to
quote:

through rock


This is the answer
Posted by Lugnut
Wesson
Member since Nov 2016
1507 posts
Posted on 4/3/18 at 6:55 pm to
Dig them yourself and find out!
Posted by Mr Fusion
The American Dream City
Member since Dec 2010
7462 posts
Posted on 4/3/18 at 6:56 pm to
What is the purpose of this drain? A French drain is made to allow groundwater to permeate into a pipe and flow out. They are designed for areas that become easily saturated and help reduce soggy ground.

An area drain uses solid pipes and allows water to catch in an inlet, and then flow out through a pipe. The inlet should be at a local low point in the yard. These are designed to prevent ponding on the surface of your yard.

If you have flooding, and your yard is sloped, just create a swale to allow surface water to flow downhill. A swale won't clog like a closed system will, and you don't have to keep the grate inlet clear of leaves and it her debris. It also isn't limited in capacity the same way a pipe is.

The biggest mistake you can make when installing an underground drain is to connect your gutter downspout into the same pipe as your yard drain. When it rains, all of that water will make the pipe reach capacity almost immediately, and not allow the yard to drain into it at a useful rate. If you do want to put your downspout underground to flow out to the curb, run it in a separate parallel pipe. The labor will be the same because you already dug the trench, and pipe isn't that expensive relative to the cost of the project.
Posted by doubleb
Baton Rouge
Member since Aug 2006
41607 posts
Posted on 4/3/18 at 7:50 pm to
Not if sized correctly.
Posted by lsufan1971
Zachary
Member since Nov 2003
23500 posts
Posted on 4/3/18 at 8:21 pm to
LINK

Good video of a guy putting in 300 ft of French drain from start to finish. He spent almost 1K in materials. After watching the video I would pay 5K in a fricking heartbeat to have someone else do it. Guy dug everything with a shovel.
This post was edited on 4/3/18 at 8:23 pm
Posted by GRTiger
On a roof eating alligator pie
Member since Dec 2008
68741 posts
Posted on 4/3/18 at 8:24 pm to
quote:

kinda the point of this thread, chef.



Great googly moogly
Posted by Koach K
Member since Nov 2016
4784 posts
Posted on 4/3/18 at 8:29 pm to
The country is suddenly “rich” again so people who do this type of work think there is an endless demand for their “services” right now. This will change. It would be one thing if you paid a premium and actually got a premium install. But in reality you pay a premium to people who can’t slap that stuff down fast enough before it’s brewski time.
Posted by Martini
Near Athens
Member since Mar 2005
49583 posts
Posted on 4/3/18 at 8:30 pm to
quote:

both guys who quoted me wouldn't provide a breakdown.



Nor should they.
Posted by Martini
Near Athens
Member since Mar 2005
49583 posts
Posted on 4/3/18 at 8:59 pm to
quote:

The country is suddenly “rich” again so people who do this type of work think there is an endless demand for their “services” right now. This will change. It would be one thing if you paid a premium and actually got a premium install. But in reality you pay a premium to people who can’t slap that stuff down fast enough before it’s brewski time.



I’m guessing you’ve never run a trencher. It won’t go through rock or even big roots. If he has rock that is a lot of time on the back of a shovel.

A rock channel will only move immediate water close by. A French dean will remove from several feet on each side and if the area stays wet this is what is needed. And the fabric works fine. I have 100 feet in my backyard that is 15 years old with no problem.
Posted by Cincinnati Bowtie
Sparta
Member since May 2008
11951 posts
Posted on 4/3/18 at 9:03 pm to
Plenty of labor outside of most Home Depot’s.
Posted by Chuker
St George, Louisiana
Member since Nov 2015
7544 posts
Posted on 4/3/18 at 9:15 pm to
Me thinks you got those high bids because the professionals knew digging in those rocks could be a nightmare. Bid high and hope you don't get it but if you do then oh well.
Posted by LEASTBAY
Member since Aug 2007
16200 posts
Posted on 4/3/18 at 10:16 pm to
Home Depot has the pipe that doesn't need gravel. You just backfill on top of it. It's a little more costly but alot less labor.
Posted by JumpingTheShark
America
Member since Nov 2012
24597 posts
Posted on 4/3/18 at 10:27 pm to
Have you ever built one? Do you have any idea how hard it is?
Posted by SUG
Member since Nov 2015
667 posts
Posted on 4/3/18 at 10:45 pm to
Installed two drains running into a main drain which has a sump pump, which flows through pvc pipe like no tomorrow 500 ft no problem into storm drain
Posted by KiwiHead
Auckland, NZ
Member since Jul 2014
35392 posts
Posted on 4/4/18 at 11:00 am to
My guess is that the contractor is padding just a "little". PVC pipe is ridiculously cheap and the lining you can get for 30.00 at Home Depot. He's probably charging you 3X the rental on the trench tool and really getting you on the labor.

I did the same thing myself on my own about 15 years ago and I forget the price, but I would say from a materials point it was maybe 500-750.00 total, pipe, liner, trench rental and gravel. The work can be backbreaking even with the use of the trench tool and drilling the holes in the PVC is just a pain in the arse
Posted by TheEnglishman
On the road to Wellville
Member since Mar 2010
3280 posts
Posted on 4/4/18 at 11:22 am to
Believe it or not... but contractors have to make money on their time and crews cost...

So if it cost him 3k in material labor and equipment... I wouldnt be blown away if he charged 5k. The work has to be worth his time.

In this scenario, you should just do it yourself. Unless your time is worth more than what you could pay someone else to do it.
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