Wash. Admin. Code § 51-11C-61013 - Section A101.3 - Air films

A101.3 Air films. Default R-values used for air films shall be as follows:

R-Value

Condition

0.17

All exterior surfaces

0.61

Interior horizontal surfaces, heat flow up

0.92

Interior horizontal surfaces, heat flow down

0.68

Interior vertical surfaces

Notes

Wash. Admin. Code § 51-11C-61013

Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-61013, filed 2/1/13, effective 7/1/13.

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