Grease and residue build-up in drain

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Posted by: from Kemptville
1/20/2012 at 9:07:50 AM

Good morning,

First off great website, lots of useful info.

A couple of years ago the drain from my kitchen sink was slow/clogged. After trying different hardware store products (ex. draino) the problem was still very much there.

So here's my set-up... our house is rougly 30 ft wide and of course the kitchen drain and the main drain stack are at opposite ends. Which makes for a long run with poor slope. To find the prob I ended up cutting my line around half way. I used a plumbing auger to find the prob and located it 3/4 of the way to the stack. Blocked almost solid with grease/residue. Flushed that section of the line using a garden hose connected to the hot water tank... worked really well.

So now in order to prevent the same problem what should I do or use. Trying to flush the line with hot water doesn't really work due to the length of the run and slope... the water cools too much. Alot of products are effective at the source of the prob and not down the line.

So what advice would you have to clean and maintain the drain line to prevent this prob? Keep in mind that we are on a septic system so I do not want to harm my system with harsh chemicals.

Thank you very much


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Date/Time1/20/2012 at 3:12:01 PM

You need to fix the slope of the drain pipe, that's the best way to fix the problem 1/4" down per foot of run. If that's not possible then install a clean out fitting were you cut the pipe and clean it out every couple of years or when you notice it not draining very well.

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Sylvain in Kemptville
Date/Time1/20/2012 at 3:16:39 PM

Perfect thanks for the advice... I might no be able to increase my slope due to some ventilation ducts. Might have to install a clean out a suggested.

Thanks again and have a great weekend.

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Date/Time3/7/2012 at 8:25:54 PM

Hello Sylvain

You probably need to re-grade your drain. 30' is a long way. Good idea with the garden hose. Word of caution, use a Hose bib vacuum breaker at the supply end. Don't want your potable water getting contaminated with any kinda waste.

After cooking up a storm in thhe kitchen, fill up one side of the sink with hot water, a couple of cups of baking soda, a couple of cups of vinegar, then let it drain with some hot water running behind the whole mix. This should help break down some of the grease build up in your drain.

If this happens again and again, and the Plumber's mix isn't helping! Call a plumbing contractor. More advanced solutions might be needed!


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