Non-penetrating Roof Rack Ballast Questions [RE-wrenches]

[Allan Sindelar]

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Hi fellow Wrenches,

I need help with suggestions for ballast material for a non-penetrating, ballasted flat-roof rack system using UniRac.  The roof pan dimension are 9' x 4' with the 9' side being the front and back dimension.  The module tilt angle is 20 degrees, leaving a space available for ballast of between 2" in the front side to 18" in the back.  I need to add about 600 pounds of ballast to each rack.  Are there any practical ballast materials I should consider to do this? What have you used successfully that is permanent, practical, low-cost, and can be moved easily onto a roof and into place?

Thanks for the help,



Randy Sadewic

randy at positiveenergysolar.com

Positive Energy, Inc.

3225A Richards Lane

Santa Fe, NM  87507

Phone 505 424-1112

Fax     505 424-1113

 

Enjoy the Sun!

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