SPS 322.38(3)(c)
(c) Joints in the vapor retarder shall be overlapped at least 6 inches and taped or sealed.
SPS 322.38(3)(d)
(d) A vapor retarder is not required under the slab of an unconditioned attached garage.
SPS 322.38(4)
(4) Concrete or masonry basement walls. A non-rigid sheet vapor retarder with a perm rating of 0.1 or less is prohibited in all of the following locations:
SPS 322.38(4)(a)
(a) On a concrete or masonry wall which is below grade to any extent.
SPS 322.38(4)(b)
(b) On an insulated frame wall constructed in front of a concrete or masonry wall which is below grade to any extent.
SPS 322.38 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09;
CR 09-104: r. (3) (d), renum. (3) (e) to be (3) (d)
Register December 2010 No. 660, eff. 1-1-11; correction in (3) (a) made under s.
13.92 (4) (b) 7. Register December 2010 No. 660.
SPS 322.39
SPS 322.39
Ventilation and moisture control. SPS 322.39(1)(1)
General. Design and construction shall prevent deterioration from moisture condensation and ice damming.
SPS 322.39(2)(a)1.1. Except as allowed under
subd. 6., where air-permeable ceiling or attic insulation is installed in a horizontal position, ventilation shall be provided above the insulation in accordance with this paragraph.
SPS 322.39(2)(a)2.
2. At least 50% of the net free ventilating area shall be distributed at the high sides of the roof.
SPS 322.39(2)(a)3.
3. The remainder of the net free ventilating area shall be distributed in the lower half of the roof or attic area.
SPS 322.39(2)(a)4.
4. If more than 50%, but less than 75% of the net free ventilating area is provided at the high sides of the roof, the total net free ventilating area shall be a minimum of 1/300 of the horizontal area of the ceiling.
SPS 322.39(2)(a)5.
5. If 75% or more of the net free ventilating area is provided at the upper sides of the roof, the total net free ventilating area shall be at least 1/150 of the horizontal area of the ceiling.
SPS 322.39(2)(a)6.
6. Ventilation is not required for separated roof areas, such as dormers, bump-outs or bays that cover a floor area of 40 ft2 or less.
SPS 322.39(2)(b)
(b) Engineered systems that provide equivalent ventilation to that required under this subsection may be used.
SPS 322.39(3)
(3) Conditioned attics. Attic spaces are not required to be vented where air-impermeable insulation is attached directly to the underside of the roof deck and all of the following conditions are met:
SPS 322.39(3)(a)
(a) No interior vapor retarders are installed between the living space and the conditioned attic.
SPS 322.39(3)(b)
(b) The temperature in the attic space is maintained high enough to prevent any moisture condensation on the insulation.
SPS 322.39 Note
Note: Maintaining the interior surface temperature of the insulation at or above the dew point temperature of the interior air will minimize condensation. Maintaining at least 45°F on the surface of the insulation will minimize condensation on the surface when the interior air temperature is 70°F and the interior relative humidity is 45%.
SPS 322.39(4)
(4) Cathedral ceilings. Air-permeable insulation in a cathedral ceiling assembly shall fill the entire cavity space unless an air barrier separates the top of the insulation from the ventilation space.
SPS 322.39(5)
(5) Mechanical ventilation. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating.
SPS 322.39(6)
(6) Clothes dryers. Clothes dryers shall be vented to the outside of the structure.
SPS 322.39 Note
Note: See s.
SPS 323.14 for vent material requirements.
SPS 322.39 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.40
SPS 322.40
Indoor temperatures and equipment sizing. SPS 322.40(1)(1)
General. The indoor temperatures listed under
sub. (2) shall be used to determine the total dwelling heat loss and to select the size of the of the heating equipment.
SPS 322.40(2)
(2) Indoor design temperatures. Unheated, non-habitable basement areas shall use a heating design temperature of less than 50°F. All other areas of a dwelling shall use a heating design temperature of 70°F.
SPS 322.40(3)
(3) Equipment sizing. Heating design loads including ventilation loads for the purpose of sizing systems shall be determined in accordance with the REScheck or REM/RATE software programs or one of the procedures described in Chapter
29 of ASHRAE Handbook of Fundamentals.
SPS 322.40 Note
Note: Residential heat balance, residential load factor, Canadian F280 and ACCA Manuals J and S are among the methods recognized as equipment-sizing protocols under chapter 29.
SPS 322.40 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.41(1)
(1)
General. Each system shall be provided with an adjustable thermostat for the regulation of temperature.
SPS 322.41(2)
(2) Circulating hot water systems. Circulating hot water systems shall include an automatic or readily accessible manual switch to turn off the circulating pump when the system is not in use.
SPS 322.41(3)
(3) Mercury thermostats. The installation of thermostats containing mercury is prohibited.
SPS 322.41 Note
Note: This section does not require the replacement of existing mercury-containing thermostats.
SPS 322.41(4)
(4) Heat pump supplementary heat. Heat pumps having supplementary electric-resistance heat shall have controls that, except during defrost, prevent supplemental heat operation when the heat pump compressor can meet the heating load.
SPS 322.41 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.42(1)(1) Supply and return heating ducts, or portions thereof, that are not located completely within the thermal envelope, shall be provided with insulation with a thermal resistance of at least R-8.
SPS 322.42(2)
(2) Building framing cavities may not be used as supply ducts.
SPS 322.42 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.43(1)
(1) Duct systems with joints not located entirely within the conditioned space or with joints located on the unconditioned side of stud bays, joist cavities and similar spaces, shall be sealed in accordance with this section.
SPS 322.43(2)
(2) Sealing shall be accomplished using welds, gaskets, mastics, mastic-plus-embedded-fabric systems or tapes installed in accordance with the manufacturer's instructions.
SPS 322.43(3)
(3) Insulation that provides a continuous air barrier may be used in lieu of sealing metal ducts.
SPS 322.43(4)
(4) Tapes and mastics used with rigid fibrous glass ducts shall be listed and labeled as complying with UL 181A.
SPS 322.43(5)
(5) Tapes and mastics used with flexible air ducts shall be listed and labeled as complying with UL 181B.
SPS 322.43(6)
(6) Tapes with rubber-based adhesives may not be used.
SPS 322.43 Note
Note: Standard duct tape or "duck tape" has a rubber-based adhesive and does not comply with the requirements of this section.
SPS 322.43 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.44
SPS 322.44 Pipe insulation. Heating pipes in unheated spaces shall be insulated with material providing a minimum thermal resistance of R-4 as measured on a flat surface in accordance with ASTM standard C 335 at a mean temperature of 75°F.
SPS 322.44 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.45
SPS 322.45
Air conditioner and heat pump efficiencies. SPS 322.45(1)(1) Heating and cooling equipment shall meet the minimum efficiency requirements in Table 322.45 when tested and rated in accordance with the applicable test procedure.
SPS 322.45(2)
(2) The efficiency shall be verified through certification under an approved certification program or, if no certification program exists, the equipment efficiency ratings shall be supported by data furnished by the manufacturer.
SPS 322.45(3)
(3) Where multiple rating conditions or performance requirements are provided, the equipment shall satisfy all efficiency requirements under this chapter.
SPS 322.45(4)
(4) Where components, such as indoor or outdoor coils, from different manufacturers are used, calculations and supporting data shall be furnished by the designer that demonstrate that the combined efficiency of the specified components meets the requirements under this section.
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See PDF for table 
SPS 322.45 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09; correction in (1) made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672.
SPS 322.46
SPS 322.46 Replacement furnace and boiler efficiencies. SPS 322.46(1)(1) A replacement furnace in existing construction may meet only the prevailing federal efficiency standard provided the duct distribution system is sealed and tested at 0.02 inches water gage across the entire system, including the manufacturer's air handler enclosure, to have air leakage less than 10 percent of the furnace manufacturer's rated air flow across the blower at high speed.
SPS 322.46 Note
Note: 0.02 inches water gage is equal to approximately 25 pascals.
SPS 322.46(2)
(2) A replacement boiler in existing construction may meet only the prevailing federal standard provided there is no installed circulation pump larger than 1/20 horsepower and no circulation pump runs continuously.
SPS 322.46 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.50
SPS 322.50
General. This subchapter establishes criteria for compliance using simulated energy performance analysis. The analysis shall include heating, cooling, and service water heating energy only.
SPS 322.50 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.51
SPS 322.51 Performance-based compliance. Compliance based on simulated energy performance requires that a proposed dwelling be shown to have an annual energy cost that is less than or equal to the annual energy cost of the standard reference design.
SPS 322.51 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09.
SPS 322.52(1)(1)
Compliance software tools. Documentation verifying that the methods and accuracy of the compliance software tools conform to the provisions of this subchapter shall be provided to the inspector.
SPS 322.52 Note
Note: REM/Rate is an acceptable software program for determining compliance with this section.
SPS 322.52(2)
(2) Compliance report. Compliance software tools shall generate a report that documents that the proposed design has annual energy costs less than or equal to the annual energy costs of the standard reference design. The compliance documentation shall include all of the following information:
SPS 322.52(2)(b)1.1. An inspection checklist documenting the building component characteristics of the proposed design as listed in Table 322.53-1.
SPS 322.52(2)(b)2.
2. The inspection checklist shall show the estimated annual energy cost for both the standard reference design and the proposed design.
SPS 322.52(3)
(3) Additional documentation. The inspector may require any of the following documents:
SPS 322.52(3)(a)
(a) Documentation of the building component characteristics of the standard reference design.
SPS 322.52(3)(b)
(b) A certification signed by the builder providing the building component characteristics of the proposed design as given in Table 322.53-1.
SPS 322.52 History
History: CR 08-043: cr.
Register March 2009 No. 639, eff. 4-1-09;
correction in (2) (b), (3) (b) made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672.
SPS 322.53(1)
(1)
General. Except as specifically allowed under this section, the standard reference design and proposed design shall be configured and analyzed using identical methods and techniques.
SPS 322.53(2)
(2) Reference and proposed designs. The standard reference design and proposed design shall be configured and analyzed as specified by Table 322.53-1. Table 322.53-1 shall include by reference all notes contained in Table 322.31-1.
