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Rigid Insulation

 
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Old 03-20-2019, 10:17 PM   #1
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Rigid Insulation


I have a question in regards to rigid insulation, in my basement I plan to mount three quarter plywood on to instruct bolted to my cinder block foundation does anybody see a potential problem with sandwiching 2in XPS rigid insulation behind the plywood to have some sort of a r value in my Electrical room.

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Old 03-21-2019, 06:44 AM   #2
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Re: Rigid Insulation


Nope as long as drainage, waterproofing, etc... is all good

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Old 03-21-2019, 07:11 AM   #3
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Re: Rigid Insulation


I ment mount the plywood on strurt. On the interior

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Old 03-21-2019, 07:30 AM   #4
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Re: Rigid Insulation


I know what you meant though you probably don't have to use a strut & could bolt directly through the foam into the concrete if you wanted but most feel better about either using a strut or 2x stock mounted to concrete & filled in with foam panels in between
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Old 03-21-2019, 07:30 AM   #5
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Re: Rigid Insulation


It should be no problem.
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Old 03-21-2019, 07:38 AM   #6
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Re: Rigid Insulation


I was asking in regards to possible moisture build up behind the foam but all the research I found says I should be good

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Old 03-21-2019, 08:40 AM   #7
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Re: Rigid Insulation


I have before used 2" ridge foam board, blue stuff, then stud frame work on top of that. Personally I feel it was better then cutting the foam to fit stud bays and it gave a nice area to run electrical and any plumbing in.
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Old 03-21-2019, 04:06 PM   #8
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Re: Rigid Insulation


Blue, Pink and yellow boards are great insulator products....

But a tiny piece smoldering INSIDE you home WILL kill you and your loved ones Dead.

Go with inflammable Rock wool, use fire treated plywood around all panels or paperless gyp board products....

Use the polystyrene OUT-side the envelope.

Don't forget to reinstall the panel ground to the ground rod...........

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