TITLE 14 HOUSING
AND CONSTRUCTION
CHAPTER 7 BUILDING CODES GENERAL
PART 6 2006
NEW MEXICO ENERGY CONSERVATION CODE
14.7.6.1 ISSUING
AGENCY: Construction Industries Division (CID) of the
Regulation and Licensing Department.
[14.7.6.1 NMAC - Rp, 14.7.6.1, NMAC, 1-1-08]
14.7.6.2 SCOPE: This
rule applies to all contracting work performed in New Mexico on or after January
1, 2008, that is subject to the jurisdiction of CID, unless performed pursuant
to a permit for which an application was received by CID before that date, except
that commercial buildings, which comply with the requirements of the 2004
edition of ASHRAE/IESNA 90.1, are excepted from the requirements of this rule.
[14.7.6.2 NMAC - Rp, 14.7.6.2, NMAC, 1-1-08]
14.7.6.3 STATUTORY AUTHORITY: NMSA
1978 sections 60-13-9 and 60-13-44.
[14.7.6.3 NMAC - Rp, 14.7.6.3, NMAC, 1-1-08]
14.7.6.4 DURATION: Permanent.
[14.7.6.4 NMAC - Rp, 14.7.6.4, NMAC, 1-1-08]
14.7.6.5 EFFECTIVE DATE: January 1, 2008, unless a later date is cited
at the end of a section.
[14.7.6.5 NMAC - Rp, 14.7.6.5, NMAC, 1-1-08]
14.7.6.6 OBJECTIVE: The purpose of this rule is to establish
minimum standards for energy conservation in construction in New Mexico.
[14.7.6.6 NMAC - Rp, 14.7.6.6, NMAC, 1-1-08]
14.7.6.7 DEFINITIONS:
[See 14.5.1 NMAC, General Provisions and
chapter 2 of the IECC as amended in 14.7.6.10 NMAC.]
[14.7.6.7 NMAC - Rp, 14.7.6.7, NMAC, 1-1-08]
14.7.6.8 ADOPTION OF THE 2006 NEW MEXICO ENERGY CONSERVATION
CODE:
A. This rule adopts by reference the
2006 international energy conservation
code (IECC), as amended by this rule.
B. In this rule, each provision is
numbered to correspond with the numbering of the 2006 international energy conservation code.
C. This rule is to be applied in conjunction
with each of the other 2006 New Mexico building codes, including the NMCBC,
NMRBC, NMPC, NMMC and the NMEC.
[14.7.6.8 NMAC - Rp, 14.7.6.8, NMAC, 1-1-08;
A, 2-24-08]
14.7.6.9 CHAPTER 1
ADMINISTRATION:
A. Section
101 - General.
(1)
101.1 Title. Delete this section of the IECC and
substitute: this rule shall be known as the 2006 New Mexico energy conservation
code (NMECC).
(2)
101.2 Scope. Delete this section of the IECC and see
14.7.6.2 NMAC, Scope.
(3) 101.3
Intent. Delete this section of the
IECC and see 14.7.6.6 NMAC, Objective.
(4)
101.4 Applicability. See this section of the IECC.
(5)
101.5.1 Compliance Materials. Delete this section of the IECC and
substitute the following: the code
official shall be permitted to approve specific computer software, worksheets,
compliance manuals and other similar materials that meet the intent of this code,
such as ComCheck, ResCheck, and worksheet or trade-off sheets from the New Mexico energy conservation code residential
applications manual.
B. Section 102 - Materials, systems and
equipment. See this section of the
IECC. 102.3 Maintenance information. Delete this section of the IECC.
C. Section
103 - Alternate materials - method of construction, design or insulating
systems. Delete this section of the IECC and see 14.5.1.11 NMAC, General
Provisions.
D. Section
104 - Construction documents. See
this section of the IECC and 14.5.2 NMAC, Permits.
E. Section
105 - Inspections. Delete this
section of the IECC and see 14.5.3 NMAC, Inspections.
F. Section
106 - Validity. Delete this section of the IECC and
see 14.5.1 NMAC, General Provisions.
G. Section
107 - Referenced standards.
(1) 107.1
General. See this section of the
IECC.
(2)
107.2 Conflicting requirements. Delete this section of the IECC and see
14.5.1.9 NMAC, General Provisions.
(3)
107.3 Referenced codes. All references in the IECC to the
international building code shall be deemed references to 14.7.2 NMAC, the 2006
New Mexico commercial building code (NMCBC).
All references to the international residential code shall be deemed
references to 14.7.3 NMAC, the 2006 New Mexico residential building code
(NMRBC). All references to the
international plumbing code shall be deemed references to 14.8.2 NMAC, the 2006
New Mexico plumbing code (NMPC). All
references to the international mechanical code shall be deemed references to
14.9.2, the 2006 New Mexico mechanical code (NMMC). All references to the ICC or international
electrical code shall be deemed references to 14.10.4 NMAC, the 2005 New Mexico
electrical code (NMEC). All references to the international energy conservation
code shall be deemed references to 14.7.6 NMAC, the 2006 New Mexico energy
conservation code (NMECC). All
references to the international fuel gas code are deemed references to the NMMC
or the LP gas standards found at 19.15.40
NMAC, and NMSA 1978 70-5-1 et seq.
[14.7.6.9 NMAC - Rp, 14.7.6.9, NMAC, 1-1-08]
14.7.6.10 CHAPTER 2 DEFINITIONS: See
this chapter of the IECC except as provided below.
A. Section
201.1 Scope. See this section of the
IECC and add the following: If the same
term is defined in the New Mexico construction codes and in the IECC, the term
shall have the meaning given it in the New Mexico construction codes.
B. Section 201.2 Interchangeability.
See this chapter of the IECC.
C. Section 201.3 Terms defined in other
codes. Delete this section of the
IECC and substitute: if a term is not defined in this code but is defined in a
New Mexico construction code, the term shall have the meaning given it in the
New Mexico construction code.
D. Section 201.4 Terms not defined. See this chapter of the IECC.
[14.7.6.10 NMAC - Rp, 14.7.6.10, NMAC, 1-1-08]
14.7.6.11 CHAPTER 3 CLIMATE ZONES: See
this section of the IECC.
A. Section
301.1 General. See this section of the IECC and add the
following sentence at the end of the section: “the building official may adjust
the climate zones within a particular jurisdiction when site-specific climate
conditions exist.”
B. Section
301.2. through 301.3.1. See these
sections of the IECC.
[14.7.6.11 NMAC - Rp, 14.7.6.11, NMAC, 1-1-08]
14.7.6.12 CHAPTER 4 RESIDENTIAL ENERGY EFFICIENCY.
A. 401
General. See this section of the
IECC.
B. 402
Building thermal envelope. See this
section of the IECC except as provided below.
(1)
402.1 General (prescriptive). See this section of the IECC.
(2)
402.2. Specific insulation
requirements (prescriptive). See
this section of the IECC except as provided below.
(a)
402.2.5 Floors. Delete the text of this section and
substitute the following: The following requirements apply to new floors and to
existing un-insulated floors, including above-garage and cantilevered floors.
(i) 402.2.5.1
Floor insulation shall be installed to maintain permanent contact with the
underside of the subfloor decking.
(ii) 402.2.5.2 Batt and blown insulation
shall be held in place by mechanical attachments.
(iii) 402.2.5.3
The manufacturer’s published installation instructions for in-floor heating
shall be followed.
(b)
402.2.7 Slab-on-grade floors. See this section of the IECC and add the
following provisions:
(i) 402.2.7.1
Exception. For slab-on-grade
installations, the placement of vertical perimeter insulation shall not be
required to penetrate the top four (4) inches of the slab at door thresholds or
between unheated garages, storage or mechanical areas, and heated living
spaces. The required depth and placement
of perimeter insulation shall not be required to a depth that exceeds that of
the top of the spread footing or the bottom of the monolithically-poured
footing as determined for frost protection.
(ii) Slab-on-grade
sill plate sealer. The space between
the foundation and the bottom plate shall be sealed to limit infiltration by
one of the following methods: application of a sill sealer that will expand and
contract, or other equivalent material, between the foundation and the bottom
plate; or application of caulk, or other equivalent material, to seal the bottom
plate of exterior walls.
(c) 402.2.11
Band joist/rim joists and corners. Band /rim joists and corners shall be
insulated to the same level as exterior walls as required for wood frame wall
R-values in Table 402.1.1 and must include an air barrier.
(d) 402.2.12 Skylight Shafts and Knee
Walls. Skylight shafts and knee
walls shall be insulated to the same level as the exterior walls as required
for wood frame wall R-values in Table 402.1.1.
(e) 402.2.13 Architectural Features. Code
required building envelope insulation and air sealing for exterior
architectural features such as stairs and decks shall be continuous.
(f) 402.2.14 Insulation Installation
Requirements. Insulation shall be
installed as follows:
(i) Insulation shall be installed according to
manufacturer’s published installation instructions.
(ii) Wall insulation
shall be enclosed on all six sides, and shall be in substantial contact with the sheathing material on at least one
side (interior or exterior) of the cavity.
(iii) Insulation shall uniformly fill each cavity
side-to-side and top-to-bottom, without substantial gaps or voids around obstructions (such as blocking or bridging).
(iv) Exterior rigid insulation shall be in firm
contact with the structural sheathing materials, and shall be tightly fitted at
joints.
(v)
Cavity insulation shall be split, installed,
and/or fitted tightly around wiring and other services.
(vi) Exterior sheathing
shall not be visible from the interior through gaps in the cavity insulation.
(g)
402.3 Fenestration. (Prescriptive.) See this section of the IECC except add the
following new section: Section 402.3.7.
Glazing-to-opaque wall area ratio.
The ratio of glazing to opaque wall area shall not exceed eighteen
percent (18%). Exception: when the ratio
of glazing to opaque wall area exceeds eighteen percent (18%), compliance shall
be demonstrated by using the calculation methods in the residential
applications manual trade-off worksheet, dated June 2004, as prepared by the
state of New Mexico energy, minerals and natural resources department.
(h)
402.4.1 Building Thermal Envelope. Delete the text of this section of the IECC
and substitute the following:
(i) 402.1.1
Infiltration. The building thermal
envelope on all new construction shall be durably sealed to limit infiltration.
The sealing methods between dissimilar materials shall allow for differential
expansion and contraction. The following shall be caulked, gasketed, weather
stripped or otherwise sealed with an air barrier material, suitable film or
solid material: all joints, seams and penetrations; site-built windows, doors
and skylights; openings between windows and door assemblies and curb mounted
skylights and their respective jambs and framing; utility penetrations; dropped
ceilings separating a garage from conditioned spaces; behind tubs and showers
on exterior walls; and other sources of infiltration.
(ii) 402.1.2 Existing building openings in level III
alterations. The existing building
openings between conditioned and un-conditioned space must be fully sealed and
insulated, and any remaining gaps must be sealed with caulk or foam. Where required, fire rated material shall be
used.
(iii) 402.4.1.3
Existing building doors and windows.
Existing building openings between door and window assemblies and their
respective jambs and framing shall be caulked, gasketed, weather stripped or
otherwise sealed with an approved material.
(iv) 402.4.1.4
Existing building skylight shaft insulation. Where access is available, all skylights and
knee walls shall be caulked,
gasketed or weather stripped and knee walls shall be insulated with an approved
material.
[14.7.6.12 NMAC - Rp, 14.7.6.12, NMAC,
1-1-08; A, 2-24-08]
14.7.6.13 CHAPTER 5 COMMERCIAL ENERGY EFFICIENCY: See this
section of the IECC.
[14.7.6.13 NMAC - Rp, 14.7.6.13, NMAC, 1-1-08]
14.7.6.14 CHAPTER 6 REFERENCED STANDARDS: See
this section of the IECC.
[14.7.6.14 NMAC - Rp, 14.7.6.14, NMAC, 1-1-08]
HISTORY OF 14.7.6
NMAC:
Pre NMAC History: None.
History of Repealed Material:
14.7.6 NMAC, 2003
New Mexico Energy Conservation Code (filed 5-27-04) repealed 1-1-08.
NMAC History:
14.7.6 NMAC, 2003
New Mexico Energy Conservation Code (filed 5-27-04) replaced by 14.7.6 NMAC,
2006 New Mexico Energy Conservation Code, effective 1-1-08.