daystrom wrote:
Thanks Westend. Great post and pics. Gives me something to try now.
What kind of leak test liquid did you use. If you made your own what was the soap to water ratio?
You're welcome. I used an empty Windex spray bottle, added water until nearly full, and pumped 6 pumps (or so) of Dawn dish soap into the bottle. You could probably add glycerin or corn syrup for a stronger bubble but it isn't necessary and the soap and water cleans up easily.
When I did my first test, I blocked off the vent openings and small jalousie windows with foam board. I forgot about the heater vent and didn't seal the door, probably a good thing as just an inch of water column is plenty of pressure.
My rig is very well sealed with multiple vapor barriers and I had sealed the siding to the framing around all the openings, including the wall to roof joint. That joint is also sealed on the roof exterior with Eternabond tape. The roof had zero leaks but I discovered about 20 pinholes in various places around the siding. I filled those spots with Geocel Tripolymer 2300 caulk and retested again, I had no more leaks. I made a location map of the leak locations on five sheets of paper so that I could remember where they were after the testing.
I plan to do this test at least once a year. It's easy to do and should help keep my rig sealed.
