My leak test setup
I've been lurking for a while and decided to post a couple of pics of my leak test setup. I bought my first TT a month or so ago and she has a leak and some water damage to the floor (working on fixi...
Forum Discussion
Nice system! Did you see the blue tub expand at all?
I've done the pressurized air test twice and plan to do it every year. It will turn up even the smallest of pinhole leaks. AFAIK, Sealtech uses a manometer on the machine that adjusts interior pressure to around .5 inches of water column. I used an HVAC furnace blower in a window and a DIY manometer which showed 1 inch of water column. Either of those pressures is sufficient for testing and a user will have a difficult time to get pressure in the interior to anything that would damage the structure.
A newer TT will have openings like under the tub for plumbing, the furnace vent, water heater enclosure, and other places where air can escape. That isn't critical if you have a good source of air like the OP's blower. It is amazing how much air comes out of the entrance door, for instance.
Since I rebuilt my rig and was very aware of water intrusion, I sealed everything using multiple types of sealing materials. I also have a lot of experience in construction so thought there would be no leaks. The first test, last year, turned up about 20 or so leaks. This year, I found about a half dozen. The pressurized air test is the only thing that will uncover all of the water intrusion points.
A pinhole leak:
I've done the pressurized air test twice and plan to do it every year. It will turn up even the smallest of pinhole leaks. AFAIK, Sealtech uses a manometer on the machine that adjusts interior pressure to around .5 inches of water column. I used an HVAC furnace blower in a window and a DIY manometer which showed 1 inch of water column. Either of those pressures is sufficient for testing and a user will have a difficult time to get pressure in the interior to anything that would damage the structure.
A newer TT will have openings like under the tub for plumbing, the furnace vent, water heater enclosure, and other places where air can escape. That isn't critical if you have a good source of air like the OP's blower. It is amazing how much air comes out of the entrance door, for instance.
Since I rebuilt my rig and was very aware of water intrusion, I sealed everything using multiple types of sealing materials. I also have a lot of experience in construction so thought there would be no leaks. The first test, last year, turned up about 20 or so leaks. This year, I found about a half dozen. The pressurized air test is the only thing that will uncover all of the water intrusion points.
A pinhole leak:
