Advice for roof on run

[MidtexChikChik]

Sorry, I don't have time to read all of this, but here are pictures of how I put polycarbonate roofing on a metal framed run.

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The purlins are wood from a pallet, zip tied to the metal frame.
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Screwed on with appropriate screws, and seams are caulked.
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This is 83% transmission, and it's plenty bright in there. I broomed it off when we got snow, and it has held up fine to two Michigan winters.

The polycarbonate wasn't cheap, about $52 per 4x8 sheet. Very much worth it, though.

Nice job! Thanks for sharing the pictures.