Install radon Manometer in accessible location (through gyp) while maintaining airtightness?
I need to install a radon mitigation system, which includes a manometer. While the manometer does NOT give a radon reading (I have another device for that), it does provide information as to whether the fan is drawing and the pipe pressure.
The house was prepped for a mitigation system with a pipe at the soil under the crawl encapsulation, which then goes straight up inside an interior wall, through a unconditioned attic and vents out through the roof. I’m being told the only options for installation of a manometer are on the pipe in the crawl, or on the pipe in the attic. Both areas are rarely accessed and are somewhat difficult to access.
I’d like the manometer to be where it can easily be seen. The radon vent pipe is in a wall adjacent to a door of a closet accessed multiple times/day. I’d like to figure out a way to install the manometer just inside the door.
However, the primary air seal layer in my home is unfortunately the gypsum board. Thus, I’m a bit OCD about trying to make sure it remains airtight. Does anyone have any ideas of how to install the manometer so it is visible but I still maintain the airtightness and the location at which the tube penetrates the pipe can be easily accessed for maintenance?
Preferred solution would be an airtight access box that opens to the wall cavity to provide access to the location at which the manometer tube goes into the pipe, and an airtight seal in the gyp where the tube penetrates to a surface mounted manometer. I thought caulk would be sufficient but the radon people make it seem like the tube gets removed and replaced often and after 5 years I would have a huge hole and air leak…
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