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time2roll

Southern California

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Posted: 01/22/21 08:15pm

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I used #10 stainless drywall screw and Dicor just into the plywood at random.

I did drill a small pilot hole so the screw would penetrate cleanly.

* This post was edited 01/22/21 09:13pm by time2roll *

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jshupe

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Posted: 01/22/21 08:19pm

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pianotuna wrote:

Jshupe,

Mine are aluminum angle screwed to the roof. I used just 3 screws per side. They are still in place.

No issue with that. I've used 2x2 aluminum angle screwed to the roof (with sealant, as I'm sure you're using) as well.

Did I miss something - why are you telling me specifically?

Edit - if it was due to my quoting Jay58, I was referencing his use of 3M 5200. It forms a permanent bond that will tear the rubber and plys apart before it gives. Wonderful stuff - for use under the waterline on a boat.

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BFL13

Victoria, BC

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Posted: 01/22/21 09:10pm

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jshupe wrote:

Jay58 wrote:

Mine are screwed into 3/8 plywood thru a 6 inch long aluminum angle 2x2 with 5200 sealant/adhesive to glue down and seal fastener holes. Wires were attached to roof with eterna-bond tape ( no screw required)

No plans to ever remove them!

Not until you have to when trouble shooting the wiring some day! It can happen the trouble is underneath by the junctions that you can't get at with the panel in place.

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jshupe

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Posted: 01/22/21 09:14pm

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BFL13 wrote:

jshupe wrote:

Jay58 wrote:

No plans to ever remove them!

Not until you have to when trouble shooting the wiring some day! It can happen the trouble is underneath by the junctions that you can't get at with the panel in place.

Again, I was taking a jab at the 3M 5200 that Jay58 used. It's a permanent bond that would tear apart the rubber roof and plywood before it would ever give. It's mostly used for bonding under the water line on boats and will rip apart a fiberglass hull before it fails. I used plenty of it on my offshore boat.

BFL13

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Posted: 01/22/21 09:51pm

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Meanwhile, I was taking a jab at the idea of Z brackets. I agree with using two pieces so you can get the panel off and leave the bottom bracket still attached to the roof. Hope the OP figures it all out! [emoticon]

1L243

Oregon

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Posted: 01/22/21 10:37pm

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The problem is finding aluminum L brackets. The Z brackets are easy to find L brackets not so easy.

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time2roll

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Posted: 01/22/21 10:44pm

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Can't you just get some L aluminum stock at Home Depot etc. and cut and drill as needed?

https://www.metalsdepot.com/aluminum-products/aluminum-angle-6061

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1L243

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Posted: 01/22/21 11:58pm

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I found that Renogy sell a adjustable two piece L bracket.

https://www.amazon.com/Renogy-Solar-Mounting-Curved-Bracket/dp/B0751T3QV6

Think I will use these