Additional provisions, modifications, and exceptions to the international energy conservation code, 2012 edition:
A. All references to the name of the jurisdiction shall be construed to mean Bannock County.
B. Delete section 108.4 Failure To Comply and replace with the following:
Any person who shall continue any work after having been served with a stop work order, except such work as that person is directed to perform to remove a violation or unsafe condition, may be liable to a fine as set forth in section 1200 of the energy conservation code.
C. Delete the values contained in table R402.1.1 (table N1102.1.1) for climate zone "5 and marine 4" and climate zone "6" and replace with the following:
TABLE R402.1.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
Climate Zone | Fenestration U-Factor | Skylight U-Factor | Glazed Fenestration SHGC | Ceiling R-Value | Wood Frame Wall R-Value | Mass Wall R-Value | Floor R-Value | Basement Wall R-Value | Slab R-Value | Crawlspace Wall R-Value |
5 and marine 4 | 0.35 | 0.60 | NR | 38 | 20 or 13+5h | 13/17 | 30g | 10/13 | 10.2 ft | 10/13 |
6 | 0.35 | 0.60 | NR | 49 | 20 or 13+5h | 15/19 | 30g | 15/19 | 10.4 ft | 10/13 |
D. Add the following footnote to the title of Table 402.1.1 - Insulation And Fenestration Requirements By Component:
k. For residential log home building thermal envelope construction requirements see section 402.6.
E. Delete the values contained in table R402.1.3 (table N1102.1.3) for climate zone "5 and marine 4" and climate zone "6" and replace with the following:
TABLE R402.1.3
EQUIVALENT U-FACTORS
Climate Zone | Fenestration U-factor | Skylight U-factor | Ceiling R-Value | Wood Frame Wall R-Value | Mass Wall R-Value | Floor R-Value | Basement Wall R-Value | Crawlspace Wall R-Value |
5 and marine 4 | 0.35 | 0.60 | 0.030 | 0.057 | 0.082 | 0.033 | 0.059 | 0.065 |
6 | 0.35 | 0.60 | 0.026 | 0.057 | 0.060 | 0.033 | 0.050 | 0.065 |
F. Delete table R402.2.6 (table N1102.2.6) and replace with the following:
TABLE R402.2.6
STEEL-FRAME CEILING, WALL AND FLOOR INSULATION (R-VALUE)
Wood Frame R-Value Requirement | Cold-Formed Steel Equivalent R-Value
(a) |
Wood Frame R-Value Requirement | Cold-Formed Steel Equivalent R-Value
(a) |
Steel Truss Ceiling | |
R-30 | R-38 or R-30 + 3 or R-26 + 5 |
R-38 | R-49 or R-38 + 3 |
R-49 | R-38 + 5 |
Steel Joist Ceilings | |
R-30 | R-38 in 2x4 or 2x6 or 2x8 R-49 in any framing |
R-38 | R-49 in 2x4 or 2x6 or 2x8 or 2x10 |
Steel Framed Wall | |
R-13 | R-13 + 5 or R-15 +4 or R-21 + 3 or R-0 +10 |
R-19 | R-13 + 9 or R-19 + 8 or R-25 +7 |
R-21 | R-13 + 10 or R-19 + 9 or R-25 +8 |
Steel Joist Floor | |
R-13 | R-19 in 2x6 R-19 +6in 2x8 or 2x10 |
R-19 | R-19 +6in 2x6 R-19 + 12in 2x8 or 2x10 |
(a) Cavity insulation R-value is listed first, followed by continuous insulation R-value. (b) Insulation exceeding the height of the framing shall cover the framing. | |
G. Delete section 402.4.1 (N1102.4.1) and replace with the following:
Building Thermal Envelope. The building thermal envelope shall comply with sections R402.1.1 and either section R402.4.1.2 or R402.4.1.3. The sealing methods between dissimilar materials shall allow for differential expansion and contraction.
H. Delete section 402.4.1.1 (N1102.4.1.1) and replace with the following:
Installation. The components of the building thermal envelope as listed in table R402.4.1.1 shall be installed in accordance with the manufacturer's instructions and the criteria listed in table R402.4.1.1, as applicable to the method of construction.
I. Delete the criteria requirement for the "fireplace" component of Table R402.4.1.1 (table N1102.4.1.1) - Air Barrier And Insulation Installation, and replace with the following:
An air barrier shall be installed on fireplace walls.
J. Delete section 402.4.1.2 (N1102.4.1.2) and replace with the following:
Testing Option. Building envelope tightness and insulation installation shall be considered acceptable when tested air leakage is less than seven (7) air changes per hour (ACH) when tested with a blower door at a pressure of 33.5 psf (50 Pa). Testing shall occur after rough in and after installation of penetrations of the building envelope, including penetrations for utilities, plumbing, electrical, ventilation and combustion appliances. During testing:
i. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed;
ii. Dampers shall be closed, but not sealed, including exhaust, intake, makeup air, backdraft and flue dampers;
iii. Interior doors shall be open;
iv. Exterior openings for continuous ventilation systems and heat recovery ventilators shall be closed and sealed;
v. Heating and cooling system(s) shall be turned off;
vi. HVAC ducts shall not be sealed; and
vii. Supply and return registers shall not be sealed.
K. Add the following as section 402.4.1.3 (N1102.4.1.3):
Visual Inspection Option. Building envelope tightness and insulation installation shall be considered acceptable when the items listed in table 402.4.1.1, applicable to the method of construction, are field verified. Where required by code official an approved party independent from the installer of the insulation shall inspect the air barrier and insulation.
L. Delete section 402.4.3 and replace with the following:
Fireplaces. New wood-burning fireplaces shall have tight- fitting flue dampers and outdoor combustion air.
M. Add the following section:
R402.6 (N1102.6) Residential Log Home Thermal Envelope.
Residential log home construction shall comply with sections 401 (General), 402.4 (Air Leakage), 402.5 (Maximum Fenestration U-Factor And SHGC), 403.1 (Controls), 403.2.2 (Sealing), 403.2.3 (Building Cavities), sections 403.3 through 403.9 (referred to as the mandatory provisions), section 404 (Electrical Power And Lighting Systems), and either subparagraph 004.04.b.i., ii., or iii. as follows:
i. Sections 402.2 through 402.3, 403.2.1, 404.1 and table 402.6;
ii. Section 405 Simulated Performance Alternative (Performance); or
iii. REScheck (U.S. department of energy building codes program).
N. Add Table R402.6 (table N1102.6) Log Home Prescriptive Thermal Envelope Requirements By Component to be used only in accordance with subparagraph 004.04.b.i. above to appear as follows:
TABLE R402.6
LOG HOME PRESCRIPTIVE THERMAL ENVELOPE REQUIREMENTS BY COMPONENT
For SI: 1 foot = 304.8 mm.
Climate Zone | Fenestration U-Factor
(a) |
Skylight U-Factor | Glazed Fenestration SHGC | Ceiling R-Value | Min. Average Log Size In Inches | Floor R-Value | Basement Wall R-Value | Slab R-Value & Depth(b) | Crawlspace Wall R-Value(d) |
5, 6-high | 0.32 | 0.60 | NR | 49 | 5 | 30 | 15/19 | 10, 4 ft | 10/13 |
5 | 0.32 | 0.60 | NR | 49 | 8 | 30 | 10/13 | 10, 2 ft | 10/13 |
6 | 0.30 | 0.60 | NR | 49 | 8 | 30 | 15/19 | 10, 4 ft | 10/13 |
a. The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration. b. R-5 shall be added to the required slab edge R-values for heated slabs. c. 90% AFUE natural gas or propane, 84% AFUE oil, or 15 SEER heat pump heating equipment (zonal electric resistance heating equipment such as electric base board electric resistance heating equipment as the sole source for heating is considered compliant with the high efficiency equipment path). d. "15/19" means R-15 continuous insulated sheathing on the interior or exterior of the home or R-19 cavity insulation at the interior of the basement wall. "15/19" shall be permitted to be met with R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulated sheathing on the interior or exterior of the home. "10/13" means R-10 continuous insulated sheathing on the interior or exterior of the home or R-13 cavity insulation at the interior of the basement wall. | |||||||||
O. Delete section R404.1 (N1104.1) and replace with the following:
Lighting Equipment (Mandatory). A minimum of fifty percent (50%) of the lamps in permanently installed lighting fixtures shall be high-efficacy lamps or a minimum of fifty percent (50%) of the permanently installed lighting fixtures shall contain only high efficacy lamps.
(Ord. 2016-2, 5-12-2016)