Author Archives: sprayrack


Effective immediately, our main phone number is changing to 952-471-2623. Orders will be taken between 9:30 and 2:30, Monday through Friday.

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RM Group to present at RCI Convention

Todd Mikkelson, inventor of the Rain Maker spray rack and owner of the RM Group, will be presenting “ASTM in the Real World” at this week’s RCI Convention and Trade Show in Orlando, FL. The convention is being held at … Continue reading

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NEW — ASTM C1715 Masonry Device

Our new ASTM C1715 Masonry Wall Drainage System Performance Device can be used alone or connected in line with more than one. It’s ready to go right out of its padded carrying pouch. Sets up in seconds. Comes with six … Continue reading

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Rain Maker Horizontal for Roof and Surface Testing

For testing horizontal surfaces. Add to your current Rain Maker spray rack, get a full Rain Maker with added horizontal feature, or get the Rain Maker Horizontal on its own. Click here for pricing and details

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Rain Wand Boom extension arm

The Rain Wand Boom extension arm extends up to 6 feet. Attach the Rain Wand AAMA 501.2 device to this telescoping extension arm and test high surfaces, while staying out of the spray yourself! PRICE: $235.00 (does NOT include Rain Wand)

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Spray Bar Stabilizer Clips

          Add these to the Rain Maker spray rack to help stabilize the extended spray bars in commercial applications where the bars cannot be reached to adjust if needed. Choose set of four, six, eighteen, or any amount. 4 – $125.00 for … Continue reading

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Booster Water Pump

  Introducing our NEW booster water pump — our choice for boosting water flow on the job site. This multistage, 660 GPH, 1/2 HP booster pump will boost PSI up to 110, allowing you to achieve the necessary pressure when using additional … Continue reading

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Testing in high places

Recently, the Rain Maker spray rack and the Wind Maker PLUS test kit were used to test new windows being installed in the Minnesota State Capitol building. Check out how our products can help YOU… Visit our newly-designed web site: … Continue reading

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