8312.5 South Park barbershop ceiling insulation R value



rear wall insulation:

The R value of the 1/2 foam insulation board is between 1.93 a 2.10. Other brands of the same material state 2.0 to 4.0

Here is a link to the product specification:



Ceiling insulation:

Please advise the inspector that there is an inch clearance between the existing ceiling and the 2 by 6 ceiling rafters. I lieu of pulling down 300 sqft of insulation, ask him if we can pull down a few rows and then feed 1/2 4 by 8 sheets of R2 foam insulation board.

The other scenario is pulling it down and then installing R23 from Lowes.

The final scenario is access areas to blow in insulation.






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