We edged the top and bottom of our panels with metal duct tape, leaving the top sealed and pricking the bottom with a pin. We got no vapor or bugs. Moisture in the panels can lead to algae which blocks the sun. If you go way back to
The thread "Harbor Freight Greenhouse projects" in
Greenhouses forum you can see what all we did to our HFGH. Both HollyAnnS
https://garden.org/users/profi... and I,
https://garden.org/users/profi... posted about our build.
I also wrote articles about improvement made. If you can find a reference to OldMud House's build of their HFGH it is really good help also. We have been using our HFGH for 9 years now and are pretty happy with it.
