ninian
New Member
Hi All,
We have an upstairs shower we have stayed away from using as there was way too much flex in it when standing on it. It didn't bother us that much until we noticed when someone was standing on the shower pan, something was impacting the ceiling below. I cut out an 8x8 inch square where the impact was and it was the p-trap impacting the ceiling drywall. For now I just installed a spring loaded access panel to cover up the hole that i might just keep in the event any leaks ever happen. That seemed to help a little bit as the ptrap isnt pushing up/down when impacting the ceiling.
It looks like on underside of the shower pan (4 foot "Maax" pan) there is just a thin styrofoam looking layer and from what I can feel, nothing else. There is a decent sized gap (half an inch or so) between that layer and the subfloor around the drain.
My thought is to try and get some window and door spray foam in there. I can probably get a nozzle on each of the 4 sides of the drain from the underside hole I cut out but it will be tight. I could also drill some small holes in the subfloor and try to use a longer nozzle. However, I don't really know how I can possibly get the coverage for all 4 feet of the pan. I figure it doesnt hurt to try and if it all needs to get ripped out eventually so be it (it's fully tiled in a corner). It is brand new (when we moved in 2 years ago) but we have no recourse for getting it fixed from the contractor as it was done before we bought the house. My other thought was drilling some holes in the front of the pan and spraying in that way, however, I don't see anyone doing this online so perhaps a bad idea?
Just wondering if anyone has any ideas? For what it's worth, the base is pretty similar if not exactly like this one: https://www.homedepot.ca/product/ma...er-base-with-square-drain-in-white/1000751523
We have an upstairs shower we have stayed away from using as there was way too much flex in it when standing on it. It didn't bother us that much until we noticed when someone was standing on the shower pan, something was impacting the ceiling below. I cut out an 8x8 inch square where the impact was and it was the p-trap impacting the ceiling drywall. For now I just installed a spring loaded access panel to cover up the hole that i might just keep in the event any leaks ever happen. That seemed to help a little bit as the ptrap isnt pushing up/down when impacting the ceiling.
It looks like on underside of the shower pan (4 foot "Maax" pan) there is just a thin styrofoam looking layer and from what I can feel, nothing else. There is a decent sized gap (half an inch or so) between that layer and the subfloor around the drain.
My thought is to try and get some window and door spray foam in there. I can probably get a nozzle on each of the 4 sides of the drain from the underside hole I cut out but it will be tight. I could also drill some small holes in the subfloor and try to use a longer nozzle. However, I don't really know how I can possibly get the coverage for all 4 feet of the pan. I figure it doesnt hurt to try and if it all needs to get ripped out eventually so be it (it's fully tiled in a corner). It is brand new (when we moved in 2 years ago) but we have no recourse for getting it fixed from the contractor as it was done before we bought the house. My other thought was drilling some holes in the front of the pan and spraying in that way, however, I don't see anyone doing this online so perhaps a bad idea?
Just wondering if anyone has any ideas? For what it's worth, the base is pretty similar if not exactly like this one: https://www.homedepot.ca/product/ma...er-base-with-square-drain-in-white/1000751523
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