1、06-01-12 07 21 23 - 1 SECTION 07 21 23 LOOSE-FILL INSULATION MODIFICATION 06-01-12 UPDATE OF STANDARDS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-06-01-12 07 21 23 - 2 SECTION 07 21 23 LOOSE-FILL INSULATION SPEC WRITER NOTE: Delete between /-/if
2、 not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION A. This section covers loose fill insulation, / vapor barrier / and all necessary blocking to install insulation / over ceilings / and / in
3、attic spaces / where shown. B. Insulation shall be installed in sufficient thickness to provide thermal resistance “R“ valves of / “R“_ above ceilings / and / “R“_ in attics / “R“_ as shown. 1.2 SUBMITTALS A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Sa
4、mples: 1. Loose fill insulation in pint size containers 2. Blocking: 150 mm (6-inch) long strips 3. Vapor Retarder: 150 mm x 150 mm (6-inch by 6-inch) pieces C. Manufactures Literature: 1. Submit current copies of the insulation manufacturers printed fact sheet literature, including descriptive data
5、, insulation characteristics, and instructions for installation and protection of insulation. 2. Submit copy of “Bag Label“. 1.3 DELIVERY A. Deliver materials to the site in the original sealed containers or packages bearing the manufacturers name and brand designation. B. The containers or packages
6、 of insulation shall bear the referenced specification number, type and class as applicable, recommended method of installation (pneumatic or pouring), minimum net weight of insulation, coverage charts, “R“ values, and required warning statements. 1.4 STORAGE A. Inspect materials delivered to the si
7、te for damage and unload and store with a minimum of handling. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-06-01-12 07 21 23 - 3 B. Storage spaces shall be dry locations, not subject to open flames or sparks, and permitting easy access for inspec
8、tion and handling. SPEC WRITER NOTE: Update the applicable publications at the time of the project specification preparation. 1.5 APPLICABLE PUBLICATIONS A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the ba
9、sic designation only. B. American Society of Testing and Materials (ASTM): C612-10 Mineral Fiber Block and Board Thermal Insulation C728-05 (R2010) Perlite Thermal Insulation Board C739-08 Cellulosic Fiber (Wood-Base) Loose-Fill Thermal Insulation C764-07 Mineral Fiber Loose Fill Thermal Insulation
10、C1015-06 . Installation of Cellulosic and Mineral Fiber Loose-Fill Thermal Insulation D4397-10 . Polyethylene Sheeting for Construction, Industrial, and Agriculture Applications E84-10 . Surface Burning Characteristics of Building Materials C. Federal Regulations: Code of Federal Regulations 29 CFR
11、1910, Occupational Safety and Health Act (OSHA). D. National Fire Protection Associations (NFPA): 211-10 . Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances PART 2 - PRODUCTS SPEC WRITER NOTE: Update material requirements to agree with the applicable requirements (types, grades, classes
12、) specified in the referenced Applicable Publications. 2.1 LOOSE FILL INSULATION A. Cellulosic or Wood Fiber Loose Fill: ASTM C739. B. Mineral Fiber Loose Fill: ASTM C764, Type I or II. 2.2 BLOCKING A. Wood, metal, mineral fiber or perlite boards or other materials approved by the Resident Engineer.
13、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-06-01-12 07 21 23 - 4 B. Mineral Fiber Board: ASTM C612, Type IB. C. Perlite Board: ASTM C728. 2.3 VAPOR RETARDER A. Six mil thick polyethylene sheeting conforming to ASTM D4397. B. Self adhesive tape
14、having a perm rating equal to the polyethylene. 2.4 RECOVERED MATERIAL A. Insulation products shall comply with following minimum content standards for recovered materials: Material Type Percent by Weight Cellulose Loose-fill and spray-on 75 percent post-consumer recovered paper Perlite composite bo
15、ard 23 percent post-consumer Rock wool material 75 percent recovered material B. The minimum-content standards are based on the weight (not the volume) of the material in the insulating core only. PART 3 - EXECUTION 3.1 INSPECTION A. Where possible, inspect / attic(s) / and / ceiling(s) / to receive
16、 insulation for conditions which will adversely affect the execution of the work or create a safety hazard. Report unsatisfactory conditions to the Resident Engineer. B. Do not install insulation until unsatisfactory conditions have been corrected. C. Follow ASTM C1015. The inspection shall include
17、checking for the following: 1. Defects in electrical fixtures, equipment, wiring, junction boxes, receptacles, and switches that will cause hazards. 2. Openings through which the loose fill insulation material may escape. 3. Air ducts which appear to have joints that are not secure or sealed. 3.2 PR
18、EPARATION A. Prior to the installation of insulation, provide blocking as specified herein and in accordance with ASTM C1015. B. Install blocking around / attic trap door(s), / ceiling access-panel(s), / and / vents / if the level to which the unsettled insulation will be installed exceeds their hei
19、ght. Cover openings into Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-06-01-12 07 21 23 - 5 the attic with temporary blocking to prevent insulation from falling into the opening, including spaces enclosed by blockings. C. Install blocking around h
20、eat producing devices with minimum clearances as specified herein. 1. Install blocking 50 mm (two inches) above the height of the finished insulation installation and in a manner that ensures that devices which may require maintenance or servicing remain accessible after the insulation is installed.
21、 2. Minimum clearances for blocking around heat producing devices shall be as follows: a. Masonry chimneys for equipment and incinerator(s) operating at a temperature of not more than 800 degrees C (1500 degrees F): 100 mm (Four inches) from the outside face of the masonry. b. Vents, chimney and ven
22、t connectors, and chimneys other than masonry chimneys: Minimum clearances as required by NFPA 211. 3.3 INSTALLATION A. Vapor Retarder: 1. / Where space is accessible, / install vapor retarder below insulation. Do not install a vapor retarder over existing insulation or where there is a vapor retard
23、er under existing insulation. 2. Take care to prevent tears, breaks, or ruptures of any kind which might interfere with the effectiveness of the vapor retarder, and install in a manner which will assure a continuous seal. 3. Lap joints or breaks in vapor retarder in a manner that will assure a vapor
24、 retarder capable of effectively controlling moisture transmission. Tape laps to retain vapor barrier in place. 4. Use self adhesive tape for laps and for sealing breaks and holes in the vapor retarder. B. Insulation: 1. Install insulation in accordance with ASTM C1015 and the requirements specified
25、. 2. Do not install insulation until the requirements specified in the INSPECTION and PREPARATION paragraphs have been carried out and any defects which were identified have been corrected and their cause eliminated. 3. Pneumatic installation of thermal insulation shall comply with OSHA. Supply and
26、utilize the personnel protective equipment and Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-06-01-12 07 21 23 - 6 engineering controls necessary for a safe effective installation. Use only pneumatic equipment in accordance with the manufacturers i
27、nstructions. 4. Install the insulation allowing it to settle to its natural density. Do not tamp or rod the insulation. SPEC WRITER NOTE: Insure space over insulation is vented. For preliminary design use a “R“ value of 3.1 per 25 mm (inch) for calculation of minimum thickness of insulation. Since d
28、ensity will vary from 9.5 to 32 Kg/m (0.6 to 2.0 pounds per cubic foot) and the insulation will settle after blowing, the initial thickness will exceed the maximum thickness; thus bag count is critical. 5. Install insulation in sufficient depth to provide the thermal value specified after settlement
29、 of the insulation. To obtain a minimum “R“ value of _ or as shown, install insulation to a minimum thickness of _ mm (_ inches) or as shown, using the number of bags per 90 m (1000 squares feet) as shown on the manufacturers “Bag Label“. 6. For pneumatic installations, use the least air pressure me
30、eting the manufacturers instructions. 7. Do not blow the insulation into electrical devices and vents which open into the attic and other spaces to be insulated. 8. Fit the attic side of / trap doors / and / access panels / with perlite or mineral fiber insulation boards. / Insulate the attic side o
31、f trap doors unless prevented by a retractable ladder. / C. Post Installation Procedures: 1. In accordance with ASTM C1015. 2. Remove temporary blockings over vent openings in attic(s). - - - E N D - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
