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DIY Rain Barrel Construction and Installation Kit (w/ Downspout Diverter)

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  • Product Description




     Note: If ordering bulk quantites of this kit (20+) please contact us for the best price on shipment to your location!

    Note: The flexible fill hose included with the DIY Rain Barrel Construction and Installation Kit is no longer 3 feet long. It has been replaced with a 31-inch accordion-style hose which cannot be cut to length, but can be extended to the desired length for installation.

    We at Rain Brothers, LLC have been designing, constructing, and installing rainwater harvesting systems -- both residential- and commercial-scale -- in the Ohio Region for nearly a decade, and we have used virtually every rainwater downspout diverter on the market. With the diverters on the market, there are recurring problems, including:
    1) Difficult installation
    2) Insufficient inlet size into the barrel/tank
    3) Insufficient overflow, causing diverter to back up drainage
    4) Working only with the smallest downspouts (i.e., 2"x3")

    Our new DIY Rain Barrel Construction and Installation Kit addresses these issues and offers a thoughtful, high-quality, affordable solution.
    For under $30, you get:
    *Three hole saws for drilling/installing valves and downspout diverter (2-1/8", 1-1/2", 1-1/4)
    *3/4" gate valve/garden hose spigot for connection to irrigation hose
    *3/4" drain nipple with cap for quick draining of barrel, linking barrels, or adding a second valve
    *Two threaded rubber grommets for water-tight and easy installation of valve and drain plug
    *1-1/2" rubber grommet for water-tight inlet into tank/barrel
    *31" of flexible hose to link barrel/tank to downspout diverter
    *Rubber "Flexi-Fit" downspout diverter choose either Rectangular (2"x3", 3"x4"downspouts) and Round (3" or 4" round downspouts). Click here for more information on the Round Downspout Diverter.
    *One "do not drink water" label for your new rainwater harvesting system
    *A winterizing cap for quick and easy winterization of your downspout.

    Flexi-Fit Downspout Diverter installs in three easy steps:

    1) Drill hole in downspout (hole saw included in kit).  For 2"x3" downspouts, drill hole in front of downspout.  For 3"x4" downspouts, drill hole in the side of the downspout (3" side).  Ensure hole is level with inlet on barrel.  Click here for more information on the Round Downspout Diverter.
    2) Insert diverter and fasten diverter to downspout with included self-tap screws
    3) Attach fill hose to diverter and into barrel, and start collecting rain!

    Installation Guide







  • Product Reviews


    Write A Review

    1. First rain in Pasadena December 2014 and collected about 300 gallons!

      Easy to set-up, used six plastic food barrels to collect over 300 gallons of water. Small two car garage and a little over two inches of rain....resulted in six full 55 gallon barrels! Use extra parts to connect barrels and still have three more barrels to set-up off house down spout. Don't know how long my rain water will last in Southern California....but every little bit helps. on 5th Dec 2014

    2. downspout diverter

      Great product, easy to install. My only problem
      was location of barrel. Down spout is located in walkway and barrel had to be around the corner in the yard. I found a 90 deg. pvc plumbing fitting that fit perfect and it kept the hose from sweeping into the walkway .Could a 90 deg. fitting be included in your diverter kit ? Thanks Ron L.
      on 15th Aug 2014

    3. This product made the project easy and quick to complete.

      This is a must buy for anyone looking to construct a rain barrel. The product works perfectly and I will be buying this kit again for the other side of the house.
      on 15th Aug 2014

    4. This is the 3rd kit we have ordered

      Time to put the rain water to use, OH THE GARDENS WE WILL HAVE KNOW.
      MY husband did all the work in no time flat and he didn't even complain,
      Thank you Rainbrothers .com
      on 11th Aug 2014

    5. excellent product!

      Easy to use, I've been looking for a diverter for quite sometime, ran across this ad on YouTube, would highly recommend, works like a charm! on 23rd Jul 2014

    6. Great product!

      We really love the diversion kit for our rain barrel that we purchased. It allows us to remain green while keeping our gutters intact and nice looking. It was worked really well for us. The only thing that I would request is sell the kit without the hole saws. Once you get one kit, you no longer need the hole saws. Saves money and keeps the earth greener! on 21st Jul 2014

    7. DIY Rain Barrel Diverter & Parts Kit by FlexFit

      This has to be one of the easiest projects I've taken on my some time.
      The FlexFit diverter kit contained everything needed to setup our rain barrels. The instructions were easy to follow, and the parts were of better quality than I expected.
      The finished setup looks very neat and we experienced a couple of days of scattered showers just after installation. My barrels are full and working as advertised.
      Great product.
      on 14th Jul 2014

    8. Excellent product

      I am not a mechanically inclined individual. I was a bit concerned ordering the rain barrel kit, but that concern disappeared quickly once I started working on the project.

      The best thing about this product is that the instructions are idiot proof. You must be hard pressed to screw it up.

      I was so happy with my rain barrel kit, that I bought a second one, and then four more for other friends.

      My only small gripe was that there USED to be a second kit that you could buy which didn't have the circular saws (if you buy two kits, you only need one set of tools). That product disappeared somewhere along the way. With that said, I emailed RainBrothers who responded quickly and modified the existing kits, discounting them after the tools were taken out. They really should make that a separate product or make a note on the website. But this is a very small criticism.
      on 8th Jul 2014

    9. rain barrel installation kit

      Well thought out, well designed, easy to install. And it's handy to have the hole saws provided, too. on 1st Jul 2014

    10. Works as advertised!

      Simple installation. We already had a rain barrel with spigots, so all I had to do was saw the hole in the barrel and the gutter and rock and roll.
      Waited 4 days for some rain to see if it worked. LOL.
      If a person has some half decent mechanical skills it will take 10 minutes to do the job. It took me 5.
      on 29th Jun 2014

  • Product Videos

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      In this video, we explain how to build your own rain barrel us...

    How to Build and Install a Rain Barrel in 5 Minutes for Less Than $30

    In this video, we explain how to build your own rain barrel using our Rain Barrel DIY Construction and Installation Kit. This product is available here: . For more information, please visit our website at or Thanks for watching!
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