ASTM F1482-04(2009)e1
(Guide)Standard Practice for Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring
Standard Practice for Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring
SIGNIFICANCE AND USE
This practice provides minimum recommendations for the installation and preparation of wood-based, fiber-reinforced gypsum and fiber-cement panel underlayments suitable to receive resilient floor coverings. Actual requirements for materials to be used, mixtures, and other details are generally included as part of project plans or specification detail and may vary from the minimum recommendations set forth in this practice.
SCOPE
1.1 This practice includes recommendations for the installation of panel type underlayments including wood based, fiber reinforced gypsum and fiber-cement panel underlayment/subfloor assemblies upon which resilient flooring may be installed.
1.2 The structural integrity of subfloor assemblies is governed by local building codes.
1.3 This practice does not supersede in any manner the resilient flooring, underlayment or adhesive manufacturer's written instructions. Consult the individual resilient flooring, underlayment or adhesive manufacturer for specific recommendations. Manufacturer's instructions supercede the recommendations included in this practice.
1.4 See Supplementary Requirements for “Select Warnings” that have been provided.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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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´1
Designation: F1482 − 04(Reapproved 2009)
Standard Practice for
Installation and Preparation of Panel Type Underlayments to
Receive Resilient Flooring
This standard is issued under the fixed designation F1482; 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 (´) indicates an editorial change since the last revision or reapproval.
´ NOTE—Removed the year/date from ANSI/A208.1 and ANSI/AHAA135.4 editorially in May 2009.
1. Scope C1288 Specification for Discrete Non-Asbestos Fiber-
Cement Interior Substrate Sheets
1.1 This practice includes recommendations for the instal-
F141 Terminology Relating to Resilient Floor Coverings
lation of panel type underlayments including wood based, fiber
reinforced gypsum and fiber-cement panel underlayment/ 2.2 ANSI Standards:
subfloor assemblies upon which resilient flooring may be ANSI/A208.1 Particleboard
installed. ANSI/AHAA135.4 Basic Hardboard
1.2 The structural integrity of subfloor assemblies is gov- 2.3 NIST Standards:
erned by local building codes. Voluntary Product Standard PS1-95 for Construction and
3,4
Industrial Plywood
1.3 This practice does not supersede in any manner the
Voluntary Product Standard PS2-92 for Wood-Based
resilient flooring, underlayment or adhesive manufacturer’s
3,4
Structural-Use Panels
written instructions. Consult the individual resilient flooring,
underlayment or adhesive manufacturer for specific recom- 2.4 Other Documents:
APA Engineered Wood Construction Guide, Form E30
mendations. Manufacturer’s instructions supercede the recom-
mendations included in this practice. APAInstallation and Preparation of Plywood Underlayment
for Resilient Flooring, Form L335
1.4 SeeSupplementaryRequirementsfor“SelectWarnings”
Resilient Floor Covering Institute (RFCI) Recommended
that have been provided.
Work Practices for Removal of Resilient Floor Coverings
1.5 The values stated in inch-pound units are to be regarded
(January 1998)
as standard. The values given in parentheses are mathematical
Lead-Based Paint: Interim Guidelines for Hazard Identifica-
conversions to SI units that are provided for information only
tion and Abatement in Public and Indian housing (1991
and are not considered standard.
revised)
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions used in this standard shall be in accordance
priate safety and health practices and determine the applica-
with Terminology F141.
bility of regulatory limitations prior to use.
3.2 Definitions of Terms Specific to This Standard:
2. Referenced Documents 3.2.1 fully adhered flooring—resilient flooring which has
2 adhesive under the entire product, bonding it to the underlay-
2.1 ASTM Standards:
ment surface.
C1278/C1278M Specification for Fiber-Reinforced Gypsum
Panel
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
ThisguideisunderthejurisdictionofASTMCommitteeF06onResilientFloor 4th Floor, New York, NY 10036, http://www.ansi.org.
Coverings and is the direct responsibility of Subcommittee F06.40 on Practices. Available from National Institute of Standards and Technology (NIST), 100
CurrenteditionapprovedMay1,2009.PublishedJuly2009.Originallyapproved Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
in 1994. Last previous edition approved in 2004 as F1482 – 04. DOI: 10.1520/ Available from APA—The Engineered Wood Association, 7011 S. 19th St.,
F1482-04R09E01. Tacoma, WA 98466–5399, www.apawood.org.
2 6
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Resilient Floor Covering Institute, 401 E. Jefferson Suite 102 Rockville, MD
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 20850, www.rfci.com.
Standards volume information, refer to the standard’s Document Summary page on U.S. Department of Housing & Urban Development, Washington, DC, ww-
the ASTM website. w.hud.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F1482 − 04 (2009)
3.2.2 non fully adhered flooring—resilient flooring that may 5.9 Composite Panels are veneer-faced panels, manufac-
be loose laid, in which no adhesive is utilized, or partially tured by bonding reconstituted wood between wood veneers in
bonded to the surface of the underlayment, typically at seams a typical three or five layer construction.
or the surrounding perimeter, or both, of the product.
6. Selection of Panel Underlayment
4. Significance and Use 6.1 General Consideration:
6.2 Lifestyle, cost constraints, desired pattern aesthetics,
4.1 This practice provides minimum recommendations for
and so forth, can affect which resilient product and panel
theinstallationandpreparationofwood-based,fiber-reinforced
underlayment should be selected. The resilient manufacturer’s
gypsum and fiber-cement panel underlayments suitable to
product information and installation recommendations should
receive resilient floor coverings. Actual requirements for ma-
be reviewed prior to purchase. Some resilient manufacturer’s
terials to be used, mixtures, and other details are generally
literature offers specific recommendations or prohibitions as to
included as part of project plans or specification detail and may
types of underlayments for use under their flooring products.
vary from the minimum recommendations set forth in this
practice.
6.3 There are two major categories of resilient flooring
installation techniques:
5. Underlayments
6.3.1 Fully adhered, and
6.3.2 Non fully adhered (perimeter or loose laid).
5.1 There are several types of panel underlayment available
over which selective resilient flooring products may be in-
6.4 Fully adhered floors, constituting the majority of resil-
stalled.
ient floors installed, generally have more limitations or restric-
tions regarding underlayment suitability of use, than perimeter
5.2 Plywood, underlayment grade plywood, complying with
or loose laid floors.
PS1-95, is composed of veneer plies and layers that are glued
together with adhesive. The grain orientation of the face 6.5 Non fully adhered floors are ones that because of their
veneers has grain running in the long direction of the panel. product construction are designed to be free or loose laid over
The inner veneers often alternate in grain direction, but may be the underlayment or partially bonded; that is, at the seam or
oriented in the same direction as adjacent inner veneers. APA perimeter areas, or both. Non fully adhered resilient flooring
Form E30 and Form L335 provide additional information. products may permit a wider selection of underlayments to be
utilized.
5.3 Oriented Strand Board (OSB), complying with PS2-92,
is made of thin narrow strands of hardwoods and softwoods 6.6 The panel underlayment shall be smooth enough so that
that are longer than they are wide. The strands are dried, the texture of the graining or particle placement in the panel
will not show through the finished resilient flooring. The
screened, blended with adhesive and formed into a multi-
layered mat. In the surface layer, the long axes of the strands underlayment panels shall not contain any foreign substance or
markings that may stain the resilient flooring after installation.
are oriented so that they are in general parallel with the long
direction of the panel. The strands in the inner layers may not Protective coatings that may be used on underlayment panels
be oriented in any particular direction or may be generally shall be non-staining and be compatible with adhesives used
oriented perpendicular to the long direction of the panel. for installing the finished flooring.
6.7 Responsibility for appearance or performance related
5.4 Fiber-Cement Underlayment, complying with Specifi-
issues that arise from use of panel underlayment outside the
cation C1288, is a discrete non-asbestos fiber-reinforced ce-
resilient manufacturer’s recommendations, typically fall back
ment flat sheet consisting essentially of an inorganic hydraulic
totheunderlaymentpanelmanufacturerorwhoeverselectedor
binder formed by the chemical reaction of a siliceous material
specified the panel underlayment to be used. Following the
and a calcareous material reinforced by organic fibers, non-
resilient flooring manufacturer’s published guidelines is rec-
asbestos inorganic fibers, or both.
ommended.
5.5 Gypsum Fiber Panel, underlayment, complying with
6.8 Responsibility for appearance or performance related
Specification C1278/C1278M.
issues that arise from patching, leveling or adhesive com-
5.6 Particleboard, complying with ANSI/A208.1, is manu-
pounds outside the resilient manufacturer’s recommendations,
factured from lignocellulosic materials (usually wood) primar-
typically fall back to the supplier of those materials or whoever
ily in the form of discrete pieces or particles, combined with a
selected or specified those materials. Following the resilient
synthetic resin or other suitable binder and bonded together
manufacturer’s published guidelines is recommended.
under heat and pressure in a hot press.
7. Material Acceptance
5.7 Hardboard, complying with ANSI/AHA A135.4, is a
panel manufactured primarily from inter-felted lignocellulosic
7.1 Delivery—All materials shall be delivered in packages,
fibers, which are consolidated under heat and pressure in a
containers, or bundles with the identification and markings
heated press.
intact.
5.8 Waferboard is made of thin wafers of wood that are 7.2 Inspection—Inspection of the materials shall be agreed
usually equal in width and length. The wood wafers are dried, upon between the purchaser and the supplier as part of the
screened, blended with adhesive and pressed. purchase agreement.
´1
F1482 − 04 (2009)
7.3 Rejection—Materialsthataredamaged,wet,frozenorin 9.1.2 Acommon floor joist spacing is a maximum of 16 in.
any way defective shall not be used. Rejection of materials (405 mm) on center. Joist spacing shall comply with local
shall be promptly reported verbally to the producer and building codes.
immediately reported in writing. The notice of rejection shall
9.1.3 Woodsubfloorstoreceivepanelunderlaymentshallbe
contain a statement documenting the basis for material rejec-
suspended at least 18 in. (460 mm) above the ground, with
tion.
adequatecrossventilation.Useofavaporbarrierontheground
surface, using overlapping widths and lengths to reduce high
7.4 Certification—When specified in the contract
humidity from ground moisture into the crawlspace below the
documents, the panel underlayment producer shall furnish a
wood subfloor is recommended where appropriate.
report certifying that the materials are in conformance with
product and material standards and contract documents. The
9.2 Preparation of New Wood Floors:
panel underlayment shall be marked as complying with the
9.2.1 A combination of the wood subfloor and panel under-
applicable product specification.
layment shall be of double layer construction. Refer to the
resilient flooring manufacturer’s recommendations and local
8. Material Storage and Conditioning
building codes for references to minimum thickness.
8.1 All materials shall be kept dry by storage under cover
9.2.2 Install panel underlayment just before the installation
and protected from the weather. Outside storage is not recom-
of the finished resilient flooring and protect it from construc-
mended.
tion traffic, staining, denting or other potential damage.
8.2 All other underlayment components shall be stacked off
9.2.3 Install with long dimension of the underlayment
the ground, flat and with care taken to avoid damage to edges,
panels perpendicular to the floor joists for maximum rigidity.
ends or surface. It should be supported on a level platform and
9.2.4 Install with underlayment panel edges offset from any
protected from direct sunlight, weather, surface contamination
subfloor joints or edges by at least 6 in. (150 mm).
or physical damage in accordance with the producer’s written
9.2.5 Offsetpanelunderlaymentjointsbyatleast16in.(405
instructions.
mm), and make sure panel underlayment is staggered such that
8.3 Materials shall be protected from exposure to tempera-
four-panel corners do not meet.
tures less than 40°F (4°C) unless otherwise specified by the
9.2.6 Use only non-staining fasteners to secure panel under-
producer.
layment.
8.4 Gypsum-based or Portland cement patching and level- 1 1
9.2.6.1 For ⁄4 to ⁄2 in. (6.4 to 12.7 mm) thick underlayment
ing compounds, or both, shall be kept dry until ready for use.
panels, use 3d ring-shank nails spaced 3 in. (75 mm) on center
They shall be kept off the ground, under cover and away from 3
along panel edges, ⁄8 in. from ends and edges (9.5 mm) and 6
damp wall and surfaces.
in.(150mm)oncenteroverpanelfield.Staplesarealsowidely
utilized as fasteners; refer to panel underlayment manufactur-
8.5 Materials shall not be applied to an underlayment
er’s recommendations as to type, length and crown orientation
containing frost. Panel underlayment surface temperature shall
of staples for the thickness underlayment being fastened.Also,
be not less than 40°F (4°C) unless otherwise specified by the
check resilient manufacturer’s recommendations. Oil from
producer. Mixtures for application shall not contain any frozen
fastening equipment can stain resilient flooring. It is the panel
ingredients.
installer’s responsibility to make sure equipment is well
8.6 Individual wood-based underlayment panels shall be
maintained (does not leak excess oil) and that non-staining
separated and stored on edge for a minimum of 24 h prior to
lubricating oils are utilized.
installation, with sufficient space between panels to permit air
19 3
9.2.6.2 For underlayment panels from ⁄32 to ⁄4 in. (15.1 to
circulation to aid in acclimatization of the underlayment
19 mm) thick, use 4d ring-shank nails spaced 6 in. (150 mm)
panels. Check underlayment panel manufacturer’s specific
on center at panel edges and 8 in. (200 mm) on center over
recommendations.
panel field.
8.7 The temperature conditions for installing resilient floor-
9.3 Preparation of Existing Wood Subfloors or Panel Un-
ing products and related sundries is typically 65 to 80°F (18 to
derlayment:
27°C) for 48 h before, during and after the installation, then
must remain within the range of 55 to 100°F (13 to 38°C)
9.3.1 The resilient flooring manufacturer shall be consulted
thereafter. regarding the removal of old resilient flooring, adhesive
residue, or othe
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation:F1482–03 Designation: F 1482 – 04 (Reapproved 2009)
Standard Practice for
Installation and Preparation of Panel Type Underlayments to
Receive Resilient Flooring
This standard is issued under the fixed designation F 1482; 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 (´) indicates an editorial change since the last revision or reapproval.
´ NOTE—Removed the year/date from ANSI/A208.1 and ANSI/AHAA135.4 editorially in May 2009.
1. Scope
1.1 This practice includes recommendations for the installation of panel type underlayments including wood based, fiber
reinforced gypsum and fiber-cement panel underlayment/subfloor assemblies upon which resilient flooring may be installed.
1.2This practice does not cover the adequacy 1.2 The structural integrity of the subfloor assembly to perform its structural
requirements, which assemblies is governed by local building codes.
1.3 This practice does not supersede in any manner the resilient flooring, underlayment or adhesive manufacturer’s written
instructions. Consult the individual resilient flooring, underlayment or adhesive manufacturer for specific recommendations.
Manufacturer’s instructions supercede the recommendations included in this practice.
1.4 See Supplementary Requirements for “Select Warnings” that have been provided.
1.5The values stated in inch/pound units are to be regarded as standard; the metric units in parentheses are for reference only.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
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.
2. Referenced Documents
2.1 ASTM Standards:
C 1278/C 1278M Specification for Fiber-Reinforced Gypsum Panel
C 1288 Specification for Discrete Non-Asbestos Fiber-Cement Interior Substrate Sheets
F 141 Terminology Relating to Resilient Floor Coverings
2.2 ANSI Standards:
ANSI/A208.1-1998 ANSI/A208.1 Particleboard
ANSI/AHAA135.4-1995A135.4 Basic Hardboard
2.3 NIST Standards:
,
3 4
Voluntary Product Standard PS1-95 for Construction and Industrial Plywood
3,4
Voluntary Product Standard PS2-92 for Wood-Based Structural-Use Panels
2.4 Other Documents:
APA Engineered Wood Construction Guide, Form E30
APA Installation and Preparation of Plywood Underlayment for Resilient Flooring, Form L335
Resilient Floor Covering Institute (RFCI) Recommended Work Practices for Removal of Resilient Floor Coverings (January
1998)
This guide is under the jurisdiction ofASTM Committee F06 on Resilient Floor Coverings and is the direct responsibility of Subcommittee F06.40 on Special Properties.
Current edition approved Feb. 10, 2003. Published April 2003. Originally published as F1482–94. Last previous edition F1482–94a.on Practices.
Current edition approved May 1, 2009. Published July 2009. Originally approved in 1994. Last previous edition approved in 2004 as F 1482 – 04.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 04.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
Annual Book of ASTM Standards, Vol 04.05.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Annual Book of ASTM Standards, Vol 15.04.
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, www.ansi.org.
Available from APA—The Engineered Wood Association, 7011 S. 19th St., Tacoma, WA 98466–5399, www.apawood.org.
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 3460, Gaithersburg, MD 20899-3460, www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
´1
F 1482 – 04 (2009)
Lead-Based Paint: Interim Guidelines for Hazard Identification and Abatement in Public and Indian housing (1991 revised)
3. Terminology
3.1 Definitions used in this standard shall be in accordance with Terminology F 141.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 fully adhered flooring—resilient flooring which has adhesive under the entire product, bonding it to the underlayment
surface.
3.2.2 non fully adhered flooring—resilient flooring that may be loose laid, in which no adhesive is utilized, or partially bonded
to the surface of the underlayment, typically at seams or the surrounding perimeter, or both, of the product.
4. Significance and Use
4.1 This practice provides minimum recommendations for the installation and preparation of wood-based, fiber-reinforced
gypsum and fiber-cement panel underlayments suitable to receive resilient floor coverings.Actual requirements for materials to be
used, mixtures, and other details are generally included as part of project plans or specification detail and may vary from the
minimum recommendations set forth in this practice.
5. Underlayments
5.1 There are several types of panel underlayment available over which selective resilient flooring products may be installed.
5.2 Plywood, underlayment grade plywood, complying with PS1-95, is composed of veneer plies and layers that are glued
together with adhesive. The grain orientation of the face veneers has grain running in the long direction of the panel. The inner
veneers often alternate in grain direction, but may be oriented in the same direction as adjacent inner veneers.APAForm E30 and
Form L335 provide additional information.
5.3 Oriented Strand Board (OSB) , complying with PS2-92, is made of thin narrow strands of hardwoods and softwoods that
are longer than they are wide. The strands are dried, screened, blended with adhesive and formed into a multi-layered mat. In the
surface layer, the long axes of the strands are oriented so that they are statistically morein general parallel towith the long direction
of the panel. The strands in the inner layers may not be oriented in any particular direction or may be generally oriented
perpendicular to the long direction of the panel.
5.4 Fiber-Cement Underlayment, complying with Specification C 1288, is a discrete non-asbestos fiber-reinforced cement flat
sheet consisting essentially of an inorganic hydraulic binder formed by the chemical reaction of a siliceous material and a
calcareous material reinforced by organic fibers, non-asbestos inorganic fibers, or both.
5.5 Gypsum Fiber Panel, underlayment, complying with Specification C 1278/C 1278M.
5.6 Particleboard, complying with ANSI/A208.1-1998ANSI/A208.1, is manufactured from lignocellulosic materials (usually
wood) primarily in the form of discrete pieces or particles, combined with a synthetic resin or other suitable binder and bonded
together under heat and pressure in a hot press.
5.7 Hardboard, complying with ANSI/AHA A135.4-1995A135.4, is a panel manufactured primarily from inter-felted
lignocellulosic fibers, which are consolidated under heat and pressure in a heated press.
5.8 Waferboard ismadeofthinwafersofwoodthatareusuallyequalinwidthandlength.Thewoodwafersaredried,screened,
blended with adhesive and pressed.
5.9 Composite Panels are veneer-faced panels, manufactured by bonding reconstituted wood between wood veneers in a
typical three or five layer construction.
6. Selection of Panel Underlayment
6.1 General ConsiderationsGeneral Consideration:
6.2Lifestyle, cost constraints, desired pattern aesthetics, and so forth, can affect which resilient product and panel underlayment
should be selected. Therefore, it is suggested that one review or have explained the resilient manufacturer’s product information
and installation recommendations prior to purchase.
6.2 Lifestyle,costconstraints,desiredpatternaesthetics,andsoforth,canaffectwhichresilientproductandpanelunderlayment
should be selected. The resilient manufacturer’s product information and installation recommendations should be reviewed prior
to purchase. Some resilient manufacturer’s literature offers specific recommendations or prohibitions as to types of underlayments
for use under their flooring products.
6.3 There are two major categories of resilient flooring installation techniques:
6.3.1 Fully adhered, and
6.3.2 Non fully adhered (perimeter or loose laid).
6.4 Fully adhered floors, constituting the majority of resilient floors installed, generally have more limitations or restrictions
regarding underlayment suitability of use, than perimeter or loose laid floors.
Resilient Floor Covering Institute, 401 E. Jefferson Suite 102 Rockville, MD 20850, www.rfci.com.
APA—The Engineered Wood Association, P.O. Box 11700, Tacoma, WA 98411-0700, www.apawood.org.
U.S. Department of Housing & Urban Development, Washington, DC, www.hud.gov.
´1
F 1482 – 04 (2009)
6.5 Non fully adhered floors are ones that because of their product construction are designed to be free or loose laid over the
underlayment or partially bonded; that is, at the seam or perimeter areas, or both. Non fully adhered resilient flooring products may
permit a wider selection of underlayments to be utilized.
6.6The panel underlayment shall be smooth enough so that the texture of the graining in the panel, if any, will not show through
the finished resilient flooring. The underlayment panels shall not contain any substance or markings that may stain the resilient
flooring after installation.
6.6 The panel underlayment shall be smooth enough so that the texture of the graining or particle placement in the panel will
not show through the finished resilient flooring. The underlayment panels shall not contain any foreign substance or markings that
maystaintheresilientflooringafterinstallation.Protectivecoatingsthatmaybeusedonunderlaymentpanelsshallbenon-staining
and be compatible with adhesives used for installing the finished flooring.
6.7 Responsibility for appearance or performance related issues that arise from use of panel underlayment outside the resilient
manufacturer’s recommendations, typically fall back to the underlayment panel manufacturer or whoever selected or specified the
panel underlayment to be used. Following the resilient flooring manufacturer’s published guidelines is recommended.
6.8 Responsibility for appearance or performance related issues that arise from patching, leveling or adhesive compounds
outside the resilient manufacturer’s recommendations, typically fall back to the supplier of those materials or whoever selected or
specified those materials. Following the resilient manufacturer’s published guidelines is recommended.
7. Material Acceptance
7.1 Delivery—All materials shall be delivered in packages, containers, or bundles with the identification and markings intact.
7.2 Inspection—Inspection of the materials shall be agreed upon between the purchaser and the supplier as part of the purchase
agreement.
7.3 Rejection—Materials that are damaged, wet, frozen or in any way defective shall not be used. Rejection of materials shall
bepromptlyreportedverballytotheproducerandimmediatelyreportedinwriting.Thenoticeofrejectionshallcontainastatement
documenting the basis for material rejection.
7.4 Certification—When specified in the contract documents, the panel underlayment producer shall furnish a report certifying
that the materials are in conformance with product and material standards and contract documents. The panel underlayment shall
be marked as complying with the applicable product specification.
8. Material Storage and Conditioning
8.1 All materials shall be kept dry by storage under cover and protected from the weather. Outside storage is not recommended.
8.2 All other underlayment components shall be stacked off the ground, flat and with care taken to avoid damage to edges, ends
orsurface.Itshouldbesupportedonalevelplatformandprotectedfromdirectsunlight,weather,surfacecontaminationorphysical
damage in accordance with the producer’s written instructions.
8.3 Materials shall be protected from exposure to temperatures less than 40°F (4°C) unless otherwise specified by the producer.
8.4 Gypsum-based or Portland cement patching and leveling compounds, or both, shall be kept dry until ready for use. They
shall be kept off the ground, under cover and away from damp wall and surfaces.
8.5 Materials shall not be applied to an underlayment containing frost. Panel underlayment surface temperature shall be not less
than 40°F (4°C) unless otherwise specified by the producer. Mixtures for application shall not contain any frozen ingredients.
8.6 Individual wood-based underlayment panels shall be separated and stored on edge for a minimum of 24 h prior to
installation, with sufficient space between panels to permit air circulation to aid in acclimatization of the underlayment panels.
Check underlayment panel manufacturer’s specific recommendations.
8.7 The temperature conditions for installing resilient flooring products and related sundries is typically 65 to 80°F (18 to 27°C)
for 48 h before, during and after the installation, then must remain within the range of 55 to 100°F (13 to 38°C) thereafter.
9. Installation of Panel Underlayment
9.1 General Considerations:
9.1.1 Underlayments to receive resilient flooring directly or panel underlayment shall be permanently dry, clean, smooth,
structurally sound and in compliance with local building codes. They shall be free of dust, solvent, paint, wax, oil, grease, residual
adhesive, adhesive removers, and other foreign materials that might prevent adhesive bond or cause staining of resilient flooring.
9.1.2 Acommon floor joist spacing is a maximum of 16 in. (405 mm) on center. Joist spacing shall comply with local building
codes.
9.1.3Wood subfloors to receive panel underlayment shall be suspended at least 18 in. (460 mm) above the ground, with adequate
cross ventilation.
9.1.
...
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