Section 322.35. Thermally isolated sunrooms.

Latest version.

(1) The minimum opaque ceiling insulation R-value shall be R-24. The minimum opaque wall R-value shall be R-13.

(2) The maximum fenestration U-factor shall be 0.50 and the maximum skylight U-factor shall be 0.75.

(3) New walls, windows and doors separating a sunroom from conditioned space shall meet the building thermal envelope requirements.

(4) The temperature in the conditioned space shall be controlled as a separate zone or shall use separate heating equipment.

(5) Glazing in a thermally-isolated sunroom is not considered to be in the dwelling thermal envelope.

CR 08-043 : cr. Register March 2009 No. 639 , eff. 4-1-09.

                    
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