Section SPS 322.33 - Slab floors(1) HEATED OR UNHEATED SLABS. (a) Any heated or unheated slab floor, the bottom of which is less than 12 inches below adjacent grade, shall be provided with perimeter insulation in accordance with Table 322.31-1 or Table 322.31-4, except as provided in par. (b).(b) At the threshold or the base of any door opening that leads directly to the exterior of the structure, the vertical perimeter insulation shall be at least R-5, excluding all garage doors.(2) HEATED SLABS. In addition to meeting the requirement under sub. (1), if applicable, heated slab floors of any depth below grade shall meet the under-slab R-value requirement in accordance with Table 322.31-1 or Table 322.31-4. (3) DETAILS. (a) The top edge of insulation installed between the exterior wall and the edge of the interior slab may be cut at a 45 degree angle away from the exterior wall.(b) Horizontal insulation extending outside of the foundation shall be covered by soil a minimum of 10 inches thick or by pavement.(c) Insulation on a foundation wall for a basement may be interrupted at the junction with a foundation wall.Wis. Admin. Code Department of Safety and Professional Services § SPS 322.33
CR 08-043: cr. Register March 2009 No. 639, eff. 4-1-09; CR 09-104: am. (1), (2) Register December 2010 No. 660, eff. 1-1-11; correction in (1), (2) made under s. 13.92(4) (b) 7, Stats., Register December 2011 No. 672.Amended by, CR 15-041: renum. (1) to (1) (a) and am., cr. (1) (b), (3) (c) Register December 2015 No. 720, eff.1/1/2016Note: See Appendix for further explanatory materials.