I’m feeling discouraged! I’m in the middle of my small greenhouse build and I’m using these sheets

[Guest]

– To seal or not to seal.

Do I seal top and bottom ends?

Can I use silicon?

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[Julien]

I do not know where you are getting your panels from but I know there is an H piece you can buy to join the sheets. I suspect somebody makes corners and ends.

[Bridget]

I used 1.5 inch foil flashing tape to seal the top edges and greenhouse plastic film repair/edge tape for the bottoms with small holes poked in the bottom to allow for weeping and air. So far so good 3 months in.

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[Kathy]

We have used the special tape...it failed. We used recommended aluminum tape...it failed. We finally gave up and we do have discoloration and dirt in the open ends.

[Ken]

They have specific tape to use.

I know it's expensive. But not nearly as expensive as replacing all your panels in 3 years.

Trust me when I say I works and it does an amazing job.

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[Jeff]

The panels I got look similar- they sold end caps- screws- and metal straps for it- I believe there is a P sheet that states the type caulk that is compatable- also drill holes larger for expansion and do not over torque mounting screws- look up the mounting directions from the factory-

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[Ben]

There's proprietary tape to cover the bottom ends, it's designed to let condensation out but not let dust/water/insects in. That goes on then the end caps. It works well. Top ends should be covered by ridging which seals from above but use the tape as well anyway.

[Ann]

We built our greenhouse ends using the poly carbonate panels and used 1x2cedar strips as a cap over the top edges. Also used the strips where each panel touched , inside and out. I then used clear silicone to seal . It’s been a year and so far no bugs or moisture issues.