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Punctured pex pipe (insulation question)
Posted on 2/18/25 at 11:54 am
Posted on 2/18/25 at 11:54 am
While installing a cabinet in my laundry room, I accidentally punctured a PEX pipe (unfortunately, there was no nail plate protector installed during the remodel). I immediately turned off the main water supply (about 4 to 5 minutes - had to get to my storage room and grab my pliers and then run out to the front of my house) and have removed as much insulation as possible around the puncture (up to my elbow, both above and below).
I plan to repair the PEX pipe, but I'm concerned about potential mold growth in areas I can't currently access, specifically near the pull-out laundry hamper below the countertop, where water likely spread. Should I also remove the insulation in that area?
I have a mold control spray that I plan to apply to the exposed wood where the insulation has already been removed. The water was spraying at high pressure shooting straight out until I stopped the flow by stacking towels (I was home alone), but I'm sure it continued to run down the wall afterward. Any advice on what additional steps I should take?

I plan to repair the PEX pipe, but I'm concerned about potential mold growth in areas I can't currently access, specifically near the pull-out laundry hamper below the countertop, where water likely spread. Should I also remove the insulation in that area?
I have a mold control spray that I plan to apply to the exposed wood where the insulation has already been removed. The water was spraying at high pressure shooting straight out until I stopped the flow by stacking towels (I was home alone), but I'm sure it continued to run down the wall afterward. Any advice on what additional steps I should take?





This post was edited on 2/18/25 at 11:56 am
Posted on 2/18/25 at 12:14 pm to Will Cover
Open up more of a hole (which you will need to do anyway to properly repair it and not look like shite). Remove as much of the loose wet insulation as you can. Set a fan in there, and you should be fine.
You can spray bleach and water if you are that worried, but honestly as long as you get the wet insulation out the wood and drywall will likely be fine since they weren't sitting in water.
If you call a company like ServPro that's all they are going to do as well and then charge your insurance company $20,000 for "mitigation"
You can spray bleach and water if you are that worried, but honestly as long as you get the wet insulation out the wood and drywall will likely be fine since they weren't sitting in water.
If you call a company like ServPro that's all they are going to do as well and then charge your insurance company $20,000 for "mitigation"
This post was edited on 2/18/25 at 12:16 pm
Posted on 2/18/25 at 12:20 pm to BigBinBR
I am going to cut out more of the sheetrock so I can pull more insulation out. I'll place a fan and aim it downward to help dry it out. I would like to get my sheetrock repaired prior to the end of this week, but can wait if waiting helps ensure everything drying out.
Posted on 2/18/25 at 12:42 pm to Will Cover
I would cut out a section of the wall behind the cabinet as well since you have access. Make sure you get all the wet insulation and then put a fan or two in there like the other poster said. Should be fine. I agree that all Servpro would do based on my experience.
Posted on 2/18/25 at 2:31 pm to Will Cover
Assuming that's an exterior wall? No access from the other side I mean?
Yeah just cut a larger hold at least to the size of the studs. Easier to drywall repair that anyway.
I'd get a shop vac and suck out all the insulation. Then get some fans and get air flow moving. I'd get a big fan blowing toward the hole and then get a small fan blowing into the actual hole.
Mold control works great if you have mold but if you caught it then just dry it out.
Yeah just cut a larger hold at least to the size of the studs. Easier to drywall repair that anyway.
I'd get a shop vac and suck out all the insulation. Then get some fans and get air flow moving. I'd get a big fan blowing toward the hole and then get a small fan blowing into the actual hole.
Mold control works great if you have mold but if you caught it then just dry it out.
Posted on 2/19/25 at 8:42 am to baldona
I ended up removing all insulation where water had run down the wall. I have had two fans (one from the top and one from the bottom) running all yesterday evening and overnight, and will continue to do so all today.
I'm glad I cut out the bottom wall underneath the cabinet, because the bottom insulation was soaked.
I plan either on Thursday or Friday to insulate, and then sheetrock. I believe that should be enough time for things to dry out.
I'm glad I cut out the bottom wall underneath the cabinet, because the bottom insulation was soaked.




I plan either on Thursday or Friday to insulate, and then sheetrock. I believe that should be enough time for things to dry out.
This post was edited on 2/19/25 at 8:46 am
Posted on 2/19/25 at 10:17 am to Will Cover
Looks good, that's essentially all anyone would have done. It'll be fine, so don't sweat it.
Posted on 2/19/25 at 2:24 pm to baldona

Going to fill the missing blown in cellulose with batts. I believe I have extra in my attic - saved it for something like this.

Posted on 2/19/25 at 3:31 pm to Will Cover
Looks like you also found a cap in your drain line in the process of the lower drywall removal. Not sure if that's a good thing to have concealed in the wall? But I am not a plumber
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