PSI for XPS Foam in Radiant Floor System

13 Mar.,2024

 

Hello,

Planning to do my own hydronic radiant system.

I already have a 3/4″ OSB subfloor nailed/glued. I wanted to install over the OSB subfloor either some XPS or EPS foam panels and cut grooves with a router, install sheets of aluminums and run my PEX tubing.

I like the premade Roth radiant panels and wanted to copy their design,  their panels have EPS foam with a compressive strength of 90 PSI.

I am planning to have this installed in this order: OSB/foam/Engineered floating floor.

I want to avoid using sleepers because it is just too expensive right now.

What would be the ideal PSI for that project? I cant really find anything rated over 20 PSI.

Thanks!

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