1、Designation: F2873 13F2873 18Standard Practice forthe Installation of Self-Leveling Underlayment and thePreparation of Surface to Receive Resilient Flooring1This standard is issued under the fixed designation F2873; the number immediately following the designation indicates the year oforiginal adopt
2、ion or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the installation of self-leveling underlayments, whi
3、ch may include a priming system, over solid wood,wood structural panel subfloors, over concrete, and over certain solidly bonded existing flooring systems such as epoxy floors,ceramic and natural stone tiles, terrazzo, as metal subfloors and foils such as steel, copper and lead, solidly bonded patch
4、ing andother leveling materials as well as properly prepared non water-soluble adhesive residues as recommended by the underlaymentmanufacturer. This practice also covers the preparation of the self-leveling underlayments surface prior to the installation ofresilient flooring.1.2 This practice point
5、s out the factors that are required to be controlled while installing a self-leveling underlayment to be usedas a substrate for resilient flooring.1.3 This practice does not cover the structural adequacy of the subfloor. The structural integrity of assemblies is governed bylocal building codes and m
6、ay be superseded by the resilient flooring manufacturers and the self-leveling underlaymentmanufacturers requirements.1.4 This practice does not supersede the self-leveling underlayment manufacturers, adhesive manufacturers or resilientflooring manufacturers written instructions. Consult the individ
7、ual manufacturer for specific recommendations.1.5 ManySome self-leveling underlayments are not suitable for use on concrete slabs on grade or below grade due to potentialmoisture problems arising from moisture intrusion. This may occur unless an adequate However, most of the self-levelingunderlaymen
8、ts may be suitable for use on and below grade if an adequate and effective vapor retarder or vapor barrier is presentdirectly beneath the concrete slab or an effective moisture remediation system has been installed beneath the surface of theself-leveling underlayment. Consult the manufacturer of the
9、 self-leveling underlayment and flooring system for specificrecommendations.1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.7 Thi
10、s practice does purport to address the necessity for or the safe or correct removal of asbestos containing materials.Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for thosewith whom they come into contact. In addition to other
11、 precautions, when working with asbestos-cement products, minimize thedust that results. For information on the safe use of chrysoltile asbestos, refer to “Safe Use of Chrysotile Asbestos: A Manual onPreventive and Control Measures.”21.8 This standard does not purport to address all of the safety co
12、ncerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.1.9 This international standard was developed in accor
13、dance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.1 This practice is under the juris
14、diction of ASTM Committee F06 on Resilient Floor Coverings and is the direct responsibility of Subcommittee F06.40 on Practices.Current edition approved June 1, 2013July 15, 2018. Published July 2013August 2018. DOI: 10.1520/F2873-13Originally approved in 2013. Last previous editionapproved in 2013
15、as F2873-13. DOI: 10.1520/F2873-18.2 Available from http:/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. Becauseit may not be technically possible to adequately depict all change
16、s accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unit
17、ed States12. Referenced Documents2.1 ASTM Standards:3C219 Terminology Relating to Hydraulic CementC1583 Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair andOverlay Materials by Direct Tension (Pull-off Method)C1708 Test Methods for Se
18、lf-leveling Mortars Containing Hydraulic CementsF141 Terminology Relating to Resilient Floor CoveringsF710 Practice for Preparing Concrete Floors to Receive Resilient FlooringF1869 Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium ChlorideF2170 Test
19、Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ ProbesF2420 Test Method for Determining Relative Humidity on the Surface of Concrete Floor Slabs Using Relative Humidity ProbeMeasurement and Insulated Hood (Withdrawn 2014)4F1482 Practice for Installation and Preparation
20、 of Panel Type Underlayments to Receive Resilient FlooringC109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube Specimens)2.2 OSHA Standard429 CFR OSHA 1926.1153 Respirable crystalline silica3. Terminology3.1 Definitions used in this practice shall be
21、 in accordance with Terminology F141.3.2 Definitions of Terms Specific to This Standard:3.2.1 fully adhered flooring, nresilient flooring which has adhesive under the entire product, bonding it to the underlaymentsurface.3.2.2 non-fully adhered flooring, nresilient flooring that may be loose laid, i
22、n which no adhesive is utilized, or partiallybonded to the surface of the underlayment, typically at seams and the surrounding perimeter of the product.3.2.3 self-leveling underlayment system, na non-structural, hydraulic cement-based, poured mortar composed primarily ofhydraulic cements, fillers or
23、 fine aggregate, and water, which may require the use of a primer to enhance bond strength and inhibitpin hole development, and which is intended to provide a flat, smooth surface for the finished floor covering.3.2.4 subfloor, na structurally sound layer intended to provide support for design loads
24、, which may receive resilient floorcoverings directly if the surface is suitable to the flooring manufacturer.3.2.5 wood structural panel, na panel manufactured from veneers, or wood strands or wafers, or a combination of veneer andwood strands, or wafers, bonded together with waterproof synthetic r
25、esins or other suitable, waterproof bonding systems such thatthey are considered to be Type 1 for exterior exposure. Lauaun plywood is not recommended to receive self-levelingcompoundsunderlayments represented in this practice.4. Significance and Use4.1 This practice provides minimum recommendations
26、 for the installation of self-leveling underlayments suitable to receiveresilient floor coverings. This practice establishes the proper preparation of the subfloor, and installation methods and qualitycontrol requirements for self-leveling underlayments. This practice addresses thenecessary preparat
27、ion of the self-levelingunderlayments surface prior to the installation of floor coverings.4.2 Actual requirements for self-leveling underlayments are generally included as part of project plans or specifications and mayvary from the recommendations set forth in this practice. Provisions in the proj
28、ect documents at variance with this practice shalltake precedence.5. Product Requirements5.1 For the purpose of this practice, self-leveling underlayment shall be hydraulic cement based compounds, as defined in 3.2.4in accordance with Terminology C219.5.2 Self-leveling underlayments shall be tested
29、for compressive strength in accordance with Test Method C109/C109Mmodified (air-cured only as detailed in Test Methods C1708). Specified psi at 28 days shall be a minimum of 3000 psi (20.7 MPa).3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at se
30、rviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.4 The last approved version of this historical standard is referenced on www.astm.org.Available from Occupational Safety and Health Administration (OSHA), 200Constitut
31、ion Ave., NW, Washington, DC 20210, http:/www.osha.gov.F2873 1826. Storage and Handling of Self-Leveling Underlayments6.1 Self-leveling underlayments included in this practice shall be delivered to the jobsites in original, unopened, undamagedbags with identification labels intact. Bags and the encl
32、osed material should not be damaged and shall be protected from theelements after delivery to the jobsite.6.2 All products shall be kept off the ground and protected from moisture and excessive heat or cold in accordance with themanufacturers recommendations.7. General Guidelines7.1 The subfloor sha
33、ll support design loads as required by the prevailing building code but no greater than L/360. Use thestrictest criteria applicable.7.2 Subfloors shall be structurally sound and dimensionally stable so as to support both the uniform design live and dead loadsin compliance with the local building cod
34、e and the self-leveling underlayment manufacturer as well as the resilient flooringmanufacturers installation requirements.7.3 Concrete subfloors shall be as described in Practice F710, or meet the requirements of the manufacturer of the self-levelingunderlayment and the manufacturer of the resilien
35、t floor covering, or both.7.3.1 Some self-leveling underlayments are recommended by their manufacturers for use over concrete that is less than 28 daysold and may be part of a moisture remediation system.7.3.1.1 The suitability of such materials to receive resilient floor coverings remains the sole
36、responsibility of the self-levelingmanufacturer.7.3.2 Wood subfloors shall be installed and prepared in accordance with Practice F1482.7.4 The HVAC system shall be operational for the minimum specified time period recommended in the moisture test(s) beingperformed prior to test commencement and shal
37、l remain on throughout the test to ensure accurate moisture testing. Otherwise,condition a test area to “in service condition” before testing.7.5 Concrete subfloors that exceed the floor covering manufacturers requirements for moisture in 7.4 shall either be made todry out until the moisture require
38、ments are within the flooring manufacturers limits or shall be remediated using products that aresuitable to receive underlayments represented in this practice.7.6 Forty eight hours before, during and 72 h after installation of the self-leveling underlayment is completed, the generalcontractor shall
39、 be responsible for ensuring that the building and substrate shall be ventilated and heated to a minimum of 50F(10C) and a maximum of 90F (32.2C) and with a maximum relative humidity of 7060 % until subfloor and ambient conditionshave stabilized. Consult the manufacturer of the self-leveling underla
40、yment for specific recommendations.7.7 Installation of the self-leveling underlayment shall not begin until the building is enclosed, including roof, windows, doorsand other openings, unless the underlayment being installed is totally water resistant, or is otherwise unaffected by casual water.It is
41、 recommended that all overhead work be completed prior to underlayment installation, to minimize surface damage.7.8 Before installation of self-leveling underlayment, the condition of the structural subfloor assemblies and any requiredelevations shall be inspected and approved by the general contrac
42、tor or owner, or both, as being suitable to receive the self-levelingunderlayment to meet the flooring manufacturers requirements.7.9 Self-leveling underlayment installation shall be performed by an applicator trained to do this type of installation by themanufacturer of the self-leveling underlayme
43、nt system, or one that can verify experience in performing the work of this practice.7.10 The general contractor shall protect the self-leveling underlayment, once installed, from drafts, direct sunlight, excessiveheat, and direct exposure construction and trade traffic.7.10.1 Failure to adequately
44、protect the surface of the self-leveling underlayment from the above conditions will result in a needfor additional surface preparation on the self-leveling underlayment prior to installation of the resilient flooring.8. Preparation of Subfloor/Underlayment Panels8.1 The wood subfloor shall be of so
45、lid wood or structural wood panel construction installed in accordance with Practice F1482,clean, permanently dry, and free of any oil, grease, dirt, and other contaminating substances that could affect the performance oract as a bond breaker. Loose boards shall be mechanically fastened. Badly cuppe
46、d or warped board subfloors shall be replacedbefore installation of underlayment. Any loose sections shall be fastened and any weak or delaminated sections shall be removedand replaced.8.2 The surfaces of the concrete structural subfloor shall be dry, clean, and free of construction wastes such as a
47、coustic and walltexture, dry wall compound over spray, compound, paint, dirt, laitance, solvents, oil, grease, loosely bonded toppings, dust, tar,wax, residual adhesives, adhesive removers, curing and sealing compounds and other foreign materials as recommended by themanufacturer of the self-levelin
48、g underlayment. To ensure maximum bonding of the self-leveling underlayment to the concretesubfloor, mechanical profiling may be recommended. Consult the manufacturer of self-leveling underlayment for specificF2873 183requirements. All warnings shall be adhered to in accordance with Practice F710. (
49、Refer to Supplemental Requirements SectionS1.) Steel troweled concrete, concrete sealed with curing compounds and any substance that could act as a bondbreaker shall beshot blasted or scarified byreduce and prevent adhesion shall mechanically removed by shot blasting, grinding or using similarmechanical means. The surface removal must be sufficient to eliminate penetrated contaminants. Acid washing or etching and theuse of sweeping compounds and solvent adhesive removers shall not be acceptable.an acceptable surface preparation method.8.
