I’m working out the design details for a Conservatory/Summerhouse that I’ll start building in a few weeks, and I was hoping for some advice on rain gutters.
This building will be all wood construction, approx. 16’x20′, with a gable roof, 5/12 pitch, cedar shingles, and copper flashing. It’s basically going to be a little Classical temple in the garden, with pilasters, entablature, etc. all articulated in painted wood.
I would like to use old fashioned concealed, or boxed, gutters on this because I don’t want to obscure any construction details with standard gutters. Construction details for this type of gutter exist in my Architectural Graphic Standards, as well as several of the old pattern books, so building these wouldn’t be a problem.
However, I’d also kind of like to construct downspouts concealed within the walls–I know it’s been done, but I have no idea how. I’ve been unable to find any sort of construction detail for this whatsoever.
So….if I wanted to do it, how? 4″ PVC? Galvanized? Naturally I don’t want to create something that will just freeze, burst, and leak into the walls. Is this whole idea just dumb?
Or should I just dispense with gutters entirely? It’s a small building with a small roof, and the drip-edge will stick out about 10.5″ past the walls. Would I have problems with water on all the glass, and all of the wood detailing?