ASTM C1320-99
(Practice)Standard Practice for Installation of Mineral Fiber Batt and Blanket Thermal Insulation for Light Frame Construction
Standard Practice for Installation of Mineral Fiber Batt and Blanket Thermal Insulation for Light Frame Construction
SCOPE
1.1 This practice covers procedures for the installation of mineral fiber batt and blanket thermal insulation in ceilings, attics, floors, and walls of new or existing housing and other light frame construction.
1.2 This practice covers the installation process from pre-installation inspection through post-installation inspection. It does not cover the production of the insulation materials.
1.3 This practice is not intended to replace manufacturers' installation instructions, but it shall be used in conjunction with such instructions. This practice is not intended to supersede local, state, or federal codes.
1.4 This practice assumes that the installer possesses a working knowledge of applicable codes and regulations, safety practices, tools, equipment, and methods necessary for the installation of thermal insulation materials. It also assumes that the installer understands the fundamentals of construction that affect the installation of insulation.
1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: C 1320 – 99
Standard Practice for
Installation of Mineral Fiber Batt and Blanket Thermal
Insulation for Light Frame Construction
This standard is issued under the fixed designation C 1320; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope D 3833 Test Method for Water Vapor Transmission of
Pressure-Sensitive Tapes
1.1 This practice covers procedures for the installation of
E 84 Test Method for Surface Burning Characteristics of
mineral fiber batt and blanket thermal insulation in ceilings,
Building Materials
attics, floors, and walls of new or existing housing and other
2.2 Other Standards:
light frame construction.
NFPA-31 Standard for the Installation of Oil Burning
1.2 This practice covers the installation process from pre-
Equipment
installation inspection through post-installation inspection. It
NFPA-54 National Fuel Gas Code
does not cover the production of the insulation materials.
NFPA-70 National Electric Code
1.3 This practice is not intended to replace manufacturers’
NFPA-211 Standard for Chimneys, Fireplaces,Vents and
installation instructions, but it shall be used in conjunction with
Solid-Fuel Burning Appliances
such instructions. This practice is not intended to supersede
ICC One and Two Family Dwelling Code
local, state, or federal codes.
CPSC Product Safety Fact Sheet No. 18, “The Home
1.4 This practice assumes that the installer possesses a
Electrical System”
working knowledge of applicable codes and regulations, safety
NAIMA Publication BI402 “Fiber Glass Batt Installation”
practices, tools, equipment, and methods necessary for the
installation of thermal insulation materials. It also assumes that
3. Terminology
the installer understands the fundamentals of construction that
3.1 Definitions—Definitions relating to thermal insulation
affect the installation of insulation.
in Terminology C 168 apply to terms used in this practice.
1.5 The values stated in inch-pound units are to be regarded
3.2 Description of Terms Specific to This Standard:
as the standard. The values given in parentheses are for
3.2.1 conditioned space—space in a building that is served
information only.
by a heating or cooling system.
1.6 This standard does not purport to address all of the
3.2.2 installer—the person or persons who apply thermal
safety concerns, if any, associated with its use. It is the
insulation materials in buildings whether or not such person or
responsibility of the user of this standard to establish appro-
persons have contracted with the owner to perform the work.
priate safety and health practices and determine the applica-
3.2.3 mineral fiber batt and blanket thermal insulating
bility of regulatory limitations prior to use.
materials—those materials that meet the minimum require-
2. Referenced Documents ments set forth in Specification C 665.
3.2.4 owner—the person, partnership, corporation, agency,
2.1 ASTM Standards:
or other entity who owns the building to be insulated whether
C 168 Terminology Relating to Thermal Insulating Materi-
such ownership is by virtue of deed, contract, or any other
als
instrument for acquiring legal title under the laws of the State
C 665 Specification for Mineral-Fiber Blanket Thermal In-
in which the building is located.
sulation for Light Frame Construction and Manufactured
3.2.5 vapor retarder—membrane or tape that has a water
Housing
−11
vapor permeance (perm) rating of 1 perm (5.7 3 10
C 755 Practice for Selection of Vapor Retarders for Thermal
Insulation
Annual Book of ASTM Standards, Vol 15.09.
Annual Book of ASTM Standards, Vol 04.07.
Available from National Fire Protection Association, Batterymarch Park,
This practice is under the jurisdiction of ASTM Committee C-16 on Thermal Quincy, MA 02269.
Insulation and is the direct responsibility of Subcommittee C16.23 on Blanket and Available from International Code Council, Falls Church, VA 22041.
Loose Fill Insulation. Available from U.S. Consumer Product Safety Commission, Washington, DC
Current edition approved Dec. 10, 1999. Published April 2000. Originally 20207.
published as C 1320–95. last pervious edition C1320–95. Available from North American Insulation Manufacturers Association, Alex-
Annual Book of ASTM Standards, Vol 04.06. andria, VA 22314.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C 1320
−1 −1 −2
kg·Pa ·s ·m ) or less as defined in Practice C 755 or Test 7.1.2 It is difficult to describe every situation that will be
Method D 3833 respectively. encountered by the insulation installer. In general, however, the
installer should be guided by the need to reduce heat flow
4. Significance and Use around or through obstructions and to protect mechanical
systems. Wherever insulation is installed in a building, it is
4.1 This practice recognizes that effectiveness, safety, and
very important that it fit snugly on all sides. If the insulation is
durability of insulation depend not only on the quality of the
too long for a space, cut it to the correct size. If it is too short,
insulating materials but also on their proper installation.
cut a piece to fill the void.
4.2 This practice provides general procedures that will help
7.1.3 Install the insulation in such a way that the thickness
to ensure installation of insulation in a safe and effective
specified by the manufacturer is met or exceeded. Avoid
manner. It shall be noted that actual conditions in existing
compression of the insulation where ever possible. Failure to
buildings vary greatly and in some cases additional care shall
be taken to ensure effective and safe installation. achieve the manufacturer’s labeled thickness will reduce the
R-value.
5. Safety Precautions
7.1.4 When a vapor retarder facing is provided with the
insulation, it can be pressure fit with no stapling or face stapled
5.1 The installer shall wear proper clothing and equipment
or inset stapled. Both inset and face staple methods are widely
as recommended by the insulation manufacturer.
used and are acceptable procedures. Inset stapling is usually
5.2 In areas where insulation is to be installed, components
preferred by the wall finish trades because it allows adhesive
of the electrical system shall be in good condition. If there is
application of the wall board. Some areas require face stapling.
reason to believe the electrical system is faulty, do not install
Always check the local code requirements.
insulation in such areas until the owner has been informed and
repair has been accomplished.
7.1.4.1 Position the vapor retarder toward the winter-warm
side, except in a hot, humid climate where local requirements
NOTE 1—The CPSC Product Safety Fact Sheet No. 18 has identified the
or practices differ regarding the placement of vapor retarders.
following signs of electrical deficiencies: lights dimming, fuses blowing,
circuit breakers tripping frequently, electrical sparks and “glowing” from
7.1.4.2 High performance batts such as R13, R15, R21,
receptacles, light flickering, and coverplates on switches and outlets that
R22, R30C, or R38C may not have to be stapled in place. The
are warm or hot to the touch.
higher density of these products helps hold them in place
without a measurable loss in the moisture protection of the
6. Pre-installation Inspection and Preparation
vapor retarder. Make sure the insulation facing is flush with the
6.1 Inspect the roof, walls, ceilings, and attic floors to
face of the stud. The insulation shall fit snugly at the sides and
identify areas where previous or existing moisture problems
ends.
have caused paint peeling, warpage, staining, visible fungus
7.1.4.3 When inset stapling, gently press the insulation at
growth, rotting, or other structural damage. Do not install
the sides of the framing cavity, usually about ⁄4 in. (19 mm),
insulation in such areas until the owner has been informed and
until the outside of the flange is flush with the face of the
has certified that these conditions have been corrected and their
framing. When inset stapling between inclined or vertical
source(s) of moisture eliminated.
framing members, as in c
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