Overflow line - need advise

skp1020August 5, 2007

My PB forgot to put the overflow line in at plumbing and I just noticed and brought it to his attention. It was suppose to go on the side of the pool, I guess under the coping. Now they want to put it in the skimmer, as in the back of the skimmer there is a 1" plug that can be drilled out and then a line can be fitted from there. It seems to me that if it was done at plumbing then it would be in a higher position than the skimmer overflow line that they now want to do. If this is done in the skimmer, do most people plug it and either when it rains or they go away for sevral days + do they take the plug off? Any pool builders please comment.

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stash_

The overflow that is molded in the skimmer should be at the right height to set your pool level. There are many bands of skimmer so this is an unknown. Your skimmer sets the pool waterline basically. The pool water is normally one half the way up the face. If you use the overflow in the skimmer the pipe should go to a drain system or drain area. It is important that you do have an overflow release for you pool.

    Bookmark   August 5, 2007 at 3:47PM
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stevenbr

Well, dont take my word, but I'll try to explain how mine is set up.

Like you said, it is installed next to the coping, but it's basically a cyliner (about a 6 or 7" pipe which is connected to the pool with a piece of 1.5" tubing.

The level in the cylinder is identical to the level in the pool, and has an overflow tube (just like your toilet), which can be adjusted in level... so when the pool exceeds the level, the water overflows into the tube and out a drain.

This seems like it could easily be installed via the skimmer also.... but perhaps he is considering just installing a straight line?

Mine also has a water line into it, so that it injects water into the pool when a float drops too low also. It also uses the same assembly as a toilet for this task also.

Either way I guess, if he comes off your skimmer, what determines the overflow level is how "tall" the overflow pipe goes. The water isn't going to drain out until the water level exceeds the "level" of the highest part of the "drain line".

Pb's feel free to correct me if I'm wrong.

By the way... I guess he can access the exterior of your skimmer body w/o tearing up your decking?

    Bookmark   August 5, 2007 at 3:52PM
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cascade

The downside to an overflow either under the coping or in the back of the skimmer is that it can become blocked with debris. An auto leveler like the one stevenbr describes (I use pool miser) does not have this problem and the fill and overflow levels are adjustable.

    Bookmark   August 5, 2007 at 4:52PM
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afnajs

My neighbor has a in-skimmer overflow. Every time we get a heavy rain, the small 1' lines clogs, and the pool over flows. Even if it is kept clean, the 1' just isn't big enough to deal with the amount of water being captured.

Our pool has a 'OverFlo' (brand name?) pipe installed just under the coping. It's a 3' round pipe that had been flattened to form a 1 1/2' tall by 5' wide mouth. That pipe, in turn, connects to the in-deck drain system. Even with the severe down pours we've had from time to time, the device has never been overwhelmed, or clogged.

The picture below is of the overflow. It is just to the right of dead-center of the picture. Installed just below the coping.

Jeff

Here is a link that might be useful: OverFlow device

    Bookmark   August 5, 2007 at 6:03PM
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Shannon01

I have a 1.5ish line that is just under coping, just at the spot on the tile that pool should be it's fullest. It leads to a line that drains our yards overflow from the gardenbeds. I cannot imagine having that much debris in my pool that would clog that little hole. At least it has never done it yet. I would think a large hole would have greater chance of a leaf getting stuck in there.

    Bookmark   August 6, 2007 at 7:05PM
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racket

I personally do not like the asthetics of the huge overflow fittings. Even here in seattle w/ all of our rain, the 1" standpipe in the poolmiser is sufficient to keep up with the rainwater. Since the pool miser lets water in the side of the pool wall, it's not likely that debris can enter the pool miser chamber and clog the line.

    Bookmark   August 7, 2007 at 2:05AM
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palmspringsgal

Racket - I couldn't help but notice you are from Seattle. My friend in Seattle is looking for a pool contractor to replaster and retile his pool. Any suggestions?

Thanks

    Bookmark   March 15, 2008 at 5:41PM
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racket

Have him e-mail me @ rob@aqualinepoolandspa.com

    Bookmark   March 15, 2008 at 7:55PM
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snookums

I have the same overflow drain as afnajs pictured. It works great, hooks up to the deck and planter drains and drains to the street. We've never had a problem in the rain.

Some cities do not allow pool water to drain to the street drains, so a different setup would be necessary in that case (it would have to drain to the sewer). Our drains go to the ocean so some cities are very strict as to what can go in there.

    Bookmark   March 17, 2008 at 1:24AM
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