We are in the process of building a lean to greenhouse on the side of the house. We are using corrugated poly- carbonate for the sides and roof. Can't quite figure out the best way to waterproof the roof vent on the sloping roof. Anyone have experience with this? It's the corrugation that is presenting the problem. Thanks.
Greenhouse vent question
Rather than the roof, how about venting high up on the sides?
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