ECO-WORTHY Roof Solar Panel Mounting Bracket System Kit (Support 1-4 Pieces Solar Panels) for Wooden, Metal, Tile, Cement, and Most Kinds of roof

I used these on a steel roof and they worked very well. I applied a layer of butyl tape under the bracket to add moisture protection. This is the same butyl tape used in RVs. At first it looks like the ribs don't line up but when tightened they do.

Worked great, much heavier duty than the other flimsy ones I ended up with. Easy to install and durable.

I used these to mount four solar panels to the top of my golf cart so I will never have to plug this golf cart in again. They are very well made, good quality, coming from somebody who is pretty finicky about the details of things. I really like the ability to secure and access the bolts from the front of the solar panels and not have to dig underneath where it is hard to reach. See photos and video.

These panel mounts appear to be well made. However i found the T-nuts, that attach the L-bracket to the sliding rail of the mount, bottomed out before fully tightening the L-bracket to the rail. Fully tightened, I was stiil able to slide the mount on the L-bracket. I was able to remove a small amount of metal from the working face of the aluminum T-nuts with a belt sander which solved the problem for me. Note the T-nuts have two shallow lines machined into their working face. I flat-sanded until those lines disappeared, which set back the center area of the T-nut very slightly - which allows the outer 'ears' of the T-nut to strongly grab the rail before bottoming. YMMV.

UPDATE - I was contacted by the seller to help make things right, and they gave me a full refund for the hardward I that did not fit my panels (my panels were just 1/8" thicker than the brackets could handle. Nice to know that they stand behind their product! Unfortunately this hardware was very difficult to use - it comes loose easily, and we ended up using another set of hardware to mount our solar panels to my roof. These might work with thinner panels?

Required modifications to properly clamp the solar panel

easiest set up. thick aluminum is durable. cost and it's universal design. I've used them on ecoworthy panels and the clamps are universal so they fit several types. I needed these for metal roof. they function best on flat surfaces with provided water proofing, but I have waved corrugated so I put a small strip of aluminum backed tar tape. just in case.

Works good for solar!