My wish has almost been granted. My 1 car garage has been demo’d and I’m building a 2 car garage with an accessory slab room. I’m going to install a hydronic radiant heat system in both slabs. I’ve come to understand(?) that due to compression and live loads not just any insulation board should be placed under a radiant slab. DOW makes a product called HIGH LOAD for this purpose. It comes it varies compressive strengths.
Has anyone used this product and which type should I use for a 2 car garage and a 12X12 room ?
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Greetings Rampside,
This post, in response to your question, will bump the thread through the 'recent discussion' listing again.
Perhaps it will catch someones attention that can help you with advice.
Cheers
'Nemo me impune lacesset'
No one will provoke me with impunity