Section SPS 322.35 - Thermally isolated sunrooms(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.Wis. Admin. Code Department of Safety and Professional Services § SPS 322.35
CR 08-043: cr. Register March 2009 No. 639, eff. 4-1-09.