whitescrew77 wrote:
O.k. I'll bite.
What do you do to pressure test a travel trailer? Pressurize it with 0.5 psi of compressed air and spray soapy water all over the exterior and look for bubbles growing? That would take a lot of air to do the job.
The pressure test requires a
volume of air to raise the pressure inside the structure by 1/2"-1" of water column, as measured with a manometer. The air pressure of the device delivering the air is inconsequential, as long as it delivers the necessary volume.
FWIW, I used a squirrel cage furnace blower and I know others have used leaf blowers to perform the test. For the first test, I also used a DIY manometer.
This is a pinhole leak with the interior pressure of 1" differential:
