How do you feel about polyiso insulation on a concrete substrate? necessary or waste of money?
I'm bidding a job on a 12 story. I came up with my own spec since none was provided. I bid 1/2" HD ISO coverboard set in low rise adhesive then fully adhered atop that.
Now the customer is requesting R20. My personal opinion is that it's not necessary. There is no insulation now in the core cut, and in my limited experience these roof types seldom ever are insulated.
I was hoping someone with more experience could shed some light. Thanks.
I'm bidding a job on a 12 story. I came up with my own spec since none was provided. I bid 1/2" HD ISO coverboard set in low rise adhesive then fully adhered atop that.
Now the customer is requesting R20. My personal opinion is that it's not necessary. There is no insulation now in the core cut, and in my limited experience these roof types seldom ever are insulated.
I was hoping someone with more experience could shed some light. Thanks.