Since I cover a majority of the GH with a solar blanket I don't mind the side and roof panels from having some leaks since I heat with a non-vented propane heater, but I did find some end panels that could use caulking when I scrubbed the inside of the panels preparing for winter.
If I don't have enough air infiltration the CO2 sensor in the heater will shut the system down.
I used caulk in most of the assembly, only using the foam striping on the vents and original door. We are preparing for our 3rd winter and are expecting freezing temps tonight, so it's a busy day, moving all the tropicals in for the season.
