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	SECTION 15080
	DUCT AND PLENUM INSULATION
	** NOTE TO SPECIFIER ** Unifrax I LLC; temperature rated insulation products. . This section is based on the products of Unifrax I LLC, which is located at:
	2351 Whirlpool St. Niagara Falls, NY 14305-2413 Tel: (716) -278-3800 Fax: (716) 278-3902 Email: info@unifrax.com Web: www.unifrax.com [ Click Here ] for additional information.
	Unifrax is a leading producer of high temperature insulation products for a wide variety of commercial building passive fire protection applications. Our well-known Fiberfrax® ceramic fiber product line, revolutionary Insulfrax® and Isofrax®, soluble fiber products, and FyreWrap® other high temperature insulation products provide innovative heat management and fire protection solutions and exceptional value to our customers in a wide range of markets. With manufacturing and sales presence in the global marketplace, and a leadership position in the global high temperature fibers market, Unifrax offers its worldwide customers the high quality products, service and support that have been the Unifrax standard for more than 60 years.
	.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Zero clearance, 2-hour fire-resistive Ventilation Air Duct (VAD) assembly. Delete if not required for project.
		A.	Duct insulation to achieve a 2-hour fire-resistive ventilation duct assembly.
	** NOTE TO SPECIFIER ** Plenum fire rated insulation. Delete if not required for project.
		B.	Plenum insulation to achieve a non-combustible rating for combustible materials in an air plenum.
	** NOTE TO SPECIFIER ** Zero clearance, 2-hour fire-resistive grease duct assembly. Delete if not required for project.
		C.	Duct insulation to achieve zero clearance to combustibles and a 2-hour fire-resistive rated duct enclosure on commercial kitchen grease duct exhaust and hazardous exhaust duct systems.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
		A.	Section 07210 - Building Insulation: Thermal insulation, both fire rated and unrated.
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Ventilation Air Ductwork (VAD). Delete if not required for project.
		A.	The following published specifications, standards, or tests that apply to single layer, fire - resistive rated ventilation air duct (VAD) insulation:
			1.	International Organization for Standardization, Fire resistance tests ventilation air ducts (ISO 6944).
			2.	International Code Council (ICC).
			3.	International Building Code (IBC).
			4.	International Mechanical Code (IMC).
			5.	ASTM C 411 - Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation.
			6.	ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
			7.	ASTM E 119 - Standard Test Method for Fire Tests of Building Construction Materials.
			8.	ASTM E 814 - Standard Test Method for Fire Tests of Through-Penetration Fire Stops.
	** NOTE TO SPECIFIER ** Noncombustible Plenum insulation. Delete if not required for project.
		B.	The following published specifications, standards, tests, or recommended methods of trade, industry, or governmental organizations apply to single layer noncombustible fire rated plenum insulation:
			1.	UL 1887 - Visible Flame and Smoke Characteristics for Plastic Pipe.
			2.	ASTM E 84/UL 723 - Surface Burning Characteristics.
			3.	ASTM E 136 - Non-combustibility.
	** NOTE TO SPECIFIER ** Grease duct fire rated insulation. Delete if not required for project.
		C.	The following published specifications, standards, or tests that apply to zero clearance two layer fire rated systems of grease duct insulation and hazardous exhaust duct insulation:
			1.	NFPA 96.
			2.	International Code Council Evaluation Service (ICCES).
			3.	1997 ICBO Uniform Mechanical Code (ICBO UMC).
			4.	1997 Uniform Building Code (UBC).
			5.	2006 International Mechanical Code (IMC).
			6.	2006 Uniform Mechanical Code (IAPMO UMC).
			7.	ASTM E 2336 - Standard Test Methods for Fire Resistance Rated Grease Duct Enclosures.
			8.	ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
			9.	ASTM E 119 - Standard Test Methods for Fire Tests of Building Construction and Materials.
			10.	ASTM E 136 - Standard Test Method for Noncombustiblity.
			11.	ASTM E 518 - Standard Test for Durability.
			12.	ASTM E 814 - Standard Test Method for Fire Tests of Through-Penetration Fire Stops
	** NOTE TO SPECIFIER ** The Authority Having Jurisdiction has final responsibility for approving equipment, materials, procedures, and performance requirements for their respective jurisdiction.
	1.4	SYSTEM DESCRIPTION
	** NOTE TO SPECIFIER ** Unifrax's FyreWrap® Elite™ 1.5 Duct Insulation is a new optimized single-layer flexible enclosure for 1- and 2-hour fire-rated ventilation air ducts (VAD). Typical duct types include smoke control, stairwell and vestibule pressurization, ventilation, heating and air conditioning supply/return, and commercial dryer exhaust, as well as refuse and linen chutes. This slim, compact design is an alternate to code prescribed fire-rated shafts and results in significant weight, space and labor savings when compared to traditional shafts. Ventilation air duct fire rated assembly. Delete of not required.
		A.	A lightweight, non-asbestos, bio-soluble, high temperature, inorganic, foil encapsulated insulation blanket. The duct wrap system shall be a tested and listed system evaluated for a 2-hour fire resistance rating on a ventilation air duct assembly. Testing shall be conducted by a nationally recognized testing laboratory.
			1.	Performance Requirements:
				a.	Single Layer System for two hour fire rating.
				b.	2-hour fire resistive enclosure assembly tested per ISO 6944.
				c.	Firestop tested per ASTM E 814, 2 Hour F and T Ratings.
				d.	Meets 25/50 Flame and Smoke Ratings per ASTM E 84.
	** NOTE TO SPECIFIER ** Unifrax's FyreWrap® 0.5 Plenum Insulation is a high temperature insulation blanket specifically designed to provide a single layer, flexible enclosure around combustible items located within fire-rated return air plenums. New construction, building renovations or modifications to the electrical and mechanical systems may result in the installation of plastic pipe or plastic-coated cables that cannot meet the minimum combustibility requirements defined in the Mechanical Code. FyreWrap 0.5 Plenum Insulation provides fire protection for these installed items by preventing flame propagation and smoke development in the plenum area. Fire rated plenum insulation. Delete of not required.
		B.	A lightweight, non-asbestos, bio-soluble, high temperature, inorganic, foil encapsulated insulation blanket. The plenum insulation system shall be tested and listed to provide a non combustible rating for combustible items located in air plenums.
			1.	Performance Requirements:
				a.	Single Layer System of 1/2 inch (13 mm) thick material.
				b.	Meets UL 1887 test criteria for visible flame and smoke characteristics.
				c.	Meets 25/50 Flame and Smoke Ratings per ASTM E 84.
				d.	Insulation and combustible item must be tested as an assembly.
	** NOTE TO SPECIFIER ** Unifrax's FyreWrap® Elite™ 1.5 Duct Insulation is a high temperature insulation blanket specifically designed to provide a flexible enclosure for one- and two-hour rated commercial kitchen grease ducts. FyreWrap® Elite™ 1.5 Duct Insulation provides a tested, fire-protective enclosure acceptable as an alternate to a traditional fire-rated shaft. Installed as a two-layer system, FyreWrap® Elite™ 1.5 Duct Insulation complies with IMC 2006, ICC ES Acceptance Criteria for Grease Duct Enclosure Assemblies, AC101 (formerly ICBO) and ASTM E-2336. Grease duct zero clearance fire rated assembly. Delete of not required.
		C.	A lightweight, non-asbestos, bio-soluble, high temperature, inorganic, foil encapsulated insulation blanket. The blanket material must capable of performing at 2000 degree F (1093 degree C) matching the internal and external fire test temperature for grease ducts. The duct wrap system shall be a tested and listed system evaluated for reduced clearances to combustibles as an alternative to a grease duct, with a two-hour fire rated shaft enclosure. Testing shall be conducted at a nationally recognized testing laboratory.
			1.	Performance Requirements:
				a.	Two-layer system of 1-1/2 inch (38 mm) 6 pcf (96 kg/m3) material.
				b.	Zero clearance to combustibles across the entire surface of the blanket material per internal fire tests of ASTM E 2336.
				c.	2-hour fire resistive enclosure assembly per ASTM E 119.
				d.	Firestop tested per ASTM E 814, 2 Hour F and T Ratings.
				e.	Meets 25/50 flame and smoke ratings per ASTM E 84.
	1.5	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		B.	Product Data: Manufacturer's data sheets on each product to be used, including:
			1.	Preparation instructions and recommendations.
			2.	Storage and handling requirements and recommendations.
			3.	Installation methods.
		C.	Submit certification and installation documentation showing system performance and Code compliance.
	1.6	QUALITY ASSURANCE
		A.	Manufacturer Qualifications: Manufacturer capable of providing field service representation during installation.
		B.	Fabricator Qualifications: Fabrication performed in quality controlled manufacturing environment by experienced fabricators with references indicating multiple satisfactory experiences fabricating high temperature insulation blanket as required for this project.
		C.	Installer Qualifications: Installer experienced in performing work of this section who has specialized in installation of work similar to that required for this project.
	** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
		D.	Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
			1.	Finish areas designated by Architect.
			2.	Do not proceed with remaining work until workmanship, color, and sheen are approved by Architect.
			3.	Refinish mock-up area as required to produce acceptable work.
		E.	Preinstallation Meetings: Conduct preinstallation meeting to verify project requirements, manufacturer's installation instructions and manufacturer's warranty requirements. Comply with Division 01 Project Management and Coordination (Project Meetings).
	1.7	DELIVERY, STORAGE, AND HANDLING
		A.	Deliver materials in original unopened packages, clearly marked with manufacturer's name, product designation, manufacturer's lot numbers and appropriate third party classification listings.
		B.	Store in a covered dry environment.
		C.	Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
	1.8	PROJECT CONDITIONS
		A.	Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
		A.	Acceptable Manufacturer: Unifrax I LLC, which is located at: 2351 Whirlpool St. ; Niagara Falls, NY 14305-2413; Tel: 716-278-3800; Email: request info; Web: www.unifrax.com
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Substitutions: Not permitted.
		C.	Requests for substitutions will be considered in accordance with provisions of Section 01600.
	** NOTE TO SPECIFIER ** Delete if not required.
	2.2	DUCT INSULATION FOR FIRE RATED VENTILATION AIR DUCTS (VAD)
	** NOTE TO SPECIFIER ** Delete product not required.
		A.	Product: FyreWrap Elite 1.5 Duct Insulation by Unifrax I LLC, Niagara Falls, NY:
			1.	Nominal 1.5 inch (38 mm) thick foil encapsulated blanket material at 6 PCF to provide 2-hour fire resistive enclosure assembly per ISO 6944.
			2.	An inorganic, flexible, non-asbestos, bio-soluble high temperature, foil encapsulated blanket material.
			3.	Blanket insulation must maintain a 2012 degree F (1100 degree C) operating temperature
			4.	Blanket fiber materials must be tested per EU regulatory requirements, Directive 97/69/EC for bio-solubility, and verified by an independent laboratory.
			5.	Provide Firestop sealants, tape, insulation pins, clips, banding and other components to ensure the installed system complies with the complete tested two-hour fire rated VAD assembly.
	** NOTE TO SPECIFIER ** Delete if not required.
	2.3	PLENUM INSULATION FOR NONCOMBUSTIBLE FIRE RATED PLENUM
		A.	Product: FyreWrap 0.5 Plenum Insulation by Unifrax I LLC, Niagara Falls, NY:
			1.	Nominal 0.5 inches (12 mm) thick foil encapsulated blanket material to provide non combustible rating.
			2.	An inorganic, flexible, non-asbestos, bio-soluble high temperature, foil encapsulated blanket material.
			3.	Blanket insulation must maintain a 2012 degree F (1100 degree C) operating temperature
			4.	Blanket fiber materials must be tested per EU regulatory requirements, Directive 97/69/EC for bio-solubility, and verified by an independent laboratory.
	** NOTE TO SPECIFIER ** Delete if not required.
	2.4	DUCT INSULATION FOR ZERO CLEARANCE APPLIED FIREPROOFING FOR FIRE-RATED GREASE DUCTS
		A.	Product: FyreWrap Elite 1.5 Duct Insulation by Unifrax I LLC, Niagara Falls, NY:
			1.	Nominal 1.5 inch (38 mm) thick foil encapsulated blanket material at 6 PCF to provide 2-hour fire resistive enclosure assembly per ASTM E 2336.
			2.	A lightweight, flexible, inorganic, non-asbestos, bio-soluble, high temperature, foil encapsulated blanket wrap.
			3.	Flexible, fully encapsulated blanket material, two-layer system to provide 2-hour fire resistive enclosure assembly per ASTM E 2336.
			4.	Blanket insulation must maintain a 2012 degree F (1100 degree C) operating temperature.
			5.	Blanket fiber materials must be tested per EU regulatory requirements, Directive 97/69/EC for bio-solubility, and verified by an independent laboratory.
			6.	Provide field fabricated or prefabricated fire rated access doors (for cleanout as required) to maintain 2-hour rating and required clearance.
			7.	Provide Firestop sealants, tape, insulation pins, clips, banding and other components as per manufacturer's instructions to provide fully functioning zero clearance to combustibles grease duct system.
	** NOTE TO SPECIFIER ** Delete if not required.
	2.5	ACCESS DOORS
	** NOTE TO SPECIFIER ** Delete field fabricated access doors if not required.
		A.	Access Door: Field fabricated 16 gauge steel.
			1.	Threaded Rods: 1/4 inch (6 mm) diameter.
	** NOTE TO SPECIFIER ** Delete gasket not required.
			2.	Gasket: 1/2 inch (13 mm) Unfaced FyreWrap or ceramic fiber blanket.
	** NOTE TO SPECIFIER ** Delete prefabricated access doors if not required.
		B.	Access Door: Ductmate Ultimate prefabricated 16 gauge steel.
	** NOTE TO SPECIFIER ** Delete prefabricated access doors if not required.
		C.	Access Door: Ductmate F2 prefabricated 16 gauge steel.
	PART 3	EXECUTION
	3.1	EXAMINATION
		A.	Do not begin installation until substrates have been properly prepared.
		B.	If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
	3.2	PREPARATION
		A.	Inspect and verify that all surfaces are smooth, dry, clean and free from dust, debris, or other loose materials. Surfaces must be dry before the application of insulation materials.
		B.	Clean surfaces thoroughly prior to installation.
		C.	Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
	3.3	INSTALLATION
	** NOTE TO SPECIFIER ** Delete if not required.
		A.	Duct Insulation (HVAC Ducts):
			1.	Single-Layer System: Apply single layer encapsulated insulation directly to duct surface.
	** NOTE TO SPECIFIER ** Include the following paragraph for duct widths of 24 inches (610 mm) or less. Delete if not required.
			2.	Install with minimum 3 inch (76mm) material joint overlap.
			3.	Seal cut edges with aluminum foil tape
			4.	Attachment for duct widths of 24 inches (610 mm) or less:
				a.	Temporarily secure duct insulation with 1 inch (25.4 mm) wide filament tape located 1-1/2 inches (38 mm) from blanket edge and on 10-1/2 inch (267 mm) centers.
				b.	Permanently attach blanket with carbon steel or stainless steel banding located 1-1/2 inches (38 mm) from blanket edge and on 10-1/2 inch (267 mm) centers.
				c.	Tighten steel bands to secure insulation firmly without damaging blanket.
	** NOTE TO SPECIFIER ** Include the following article for duct widths greater than 24 inches (610 mm). Delete if not required.
			5.	Attachment for duct widths greater than 24 inches (610 mm):
				a.	Weld 12 gauge steel insulation pins to underside of horizontal runs and backside of vertical runs in rows spaced maximum 10 1/2 inches (267 mm) on center along duct length, 6 inches - 12 inches (152 - 305 mm) from duct edges.
				b.	Space pins 12 inches (305 mm) on center across duct width.
				c.	Impale insulation over pins and hold in place with 2-1/2 inch (64 mm) square galvanized steel speed clips (washers).
				d.	Turn down or cut off exposed pin ends.
	** NOTE TO SPECIFIER ** Delete if not required.
		B.	Plenum Insulation:
			1.	Apply single layer encapsulated insulation directly to surface of combustible item.
			2.	Cut insulation lengths to wrap around combustible item providing 1 inch (25.4 mm) longitudinal overlap.
			3.	Seal cut edges with aluminum foil tape.
			4.	Provide 1 inch (25.4 mm) perimeter overlap with adjacent insulation blanket.
			5.	Temporarily secure plenum insulation with 1 inch (25.4 mm) wide filament tape, located 1/2 inch (12.7 mm) from blanket edge and on 11 inch (280 mm) centers.
			6.	Permanently attach insulation with steel tie wire or banding on maximum 11 inch centers (279 mm).
			7.	Tighten wire or banding to secure insulation firmly without damaging blanket.
	** NOTE TO SPECIFIER ** Delete if not required.
		C.	Duct Insulation (Grease and Hazardous Exhaust Ducts):
			1.	Two-Layer System: Apply two-layers of encapsulated insulation directly on duct surface.
			2.	Install first layer with transverse material compression joints. Install first layer longitudinal joints with minimum 3 inch (76mm) material joint overlaps.
			3.	Install second layer with minimum 3 inch (76mm) material joint overlaps, offset minimum of 12 inches (305mm) from first layer joints.
			4.	Seal cut edges with aluminum foil tape.
	** NOTE TO SPECIFIER ** Any one of the following 3 techniques is acceptable for transverse overlap joints of adjacent blankets on the second layer. The telescoping technique is the most common method and the checkerboard technique is often used when repairing a small section of duct wrap. Delete the following sentence where there is no need to use adjacent blankets longitudinally; see manufacturer's literature for detailed diagrams. Delete technique not required or acceptable.
			5.	Transverse material joints may be installed using any of the following techniques:
				a.	Telescope overlap - insulation installed by leaving one edge exposed and overlapping other edge with adjacent blanket.
				b.	Checkerboard overlap - overlap both edges of alternating blanket, leaving both edges of others exposed.
				c.	Butt Joint & collar - cover blanket butt edges with 6 inch (152mm) blanket collar centered on material joint.
	** NOTE TO SPECIFIER ** The following attachment option must be specified for duct widths 24 inches (610 mm) or less when neither of the above two methods will be used.
			6.	Banding for duct widths 24 inches (610 mm) or less:
				a.	Temporarily secure insulation with filament tape.
				b.	Place carbon steel or stainless steel bands (minimum 1/2 inch (12.7 mm) wide, nominal 0.015 inch (0.4 mm) thick) 1-1/2 inches (38 mm) from edge of overlap joints.
				c.	Place bands at maximum 10-1/2 inches (267 mm) on center in field between overlaps.
				d.	Tighten steel bands to secure insulation firmly without damaging blanket.
	** NOTE TO SPECIFIER ** The following attachment option may be chosen for duct widths greater than 24 inches (610 mm) up through 48 inches (1220 mm) where the above option is not chosen, and is an optional attachment method for duct widths 24 inches (610 mm) or less.
			7.	Pins and Banding for duct widths greater than 24 inches (610 mm) up through 48 inches (1220 mm):
				a.	Weld 12 gauge steel insulation pins to underside of horizontal runs and backside of vertical runs in rows spaced maximum 10-1/2 inches (267 mm) on center along duct length.
				b.	Space pins 12 inches (305 mm) on center across duct width and 1-1/2 inches (38 mm) from duct edges.
				c.	Impale insulation over pins and hold in place with 2-1/2 inch (64 mm) square galvanized steel speed clips (washers).
				d.	Secure insulation to duct with filament tape as needed.
				e.	Turn down or cut off exposed pin ends.
				f.	Locate carbon steel or stainless steel bands (minimum 1/2 inch (12.7 mm) wide, nominal 0.015 inch (0.4 mm) thick) 1-1/2 inches (38 mm) from edge of overlap joints.
				g.	Space remaining bands at midpoint between overlap joints or at 10-1/2 inches (267 mm) oc. Tighten steel bands to secure insulation firmly without damaging blanket.
	** NOTE TO SPECIFIER ** The following attachment option is required for any ducts wider than 48 inches (1220 mm) and is optional for all others. Delete if not required.
			8.	Pins for ducts wider than 48 inches (1220 mm):
				a.	Weld 12 gauge steel insulation pins on all sides of duct in rows spaced maximum 10 1/2 inches (267 mm) on center along duct length.
				b.	Space pins 8 inches (203 mm) on center around duct and 5 inches (127 mm) from duct edges. Center insulation overlaps on pins.
				c.	Impale insulation over pins and hold in place with 2-1/2 inch (64 mm) square galvanized steel speed clips (washers).
				d.	Turn down or cut off exposed pin ends.
	** NOTE TO SPECIFIER ** The wrapping technique outlined in the following sentence is optional for vertical duct runs.
			9.	Vertical Ductwork: Apply insulation in continuous length parallel to vertical length of duct with overlaps minimum of 6 inches (152 mm) from duct corners. Space pins 8 inches (203 mm) on center at centerline of vertically oriented overlaps and on maximum 12 inch (305 mm) columns.
	3.4	ACCESS DOORS
		A.	Field-Fabricated:
	** NOTE TO SPECIFIER ** Delete article below if Ductmate Ultimate or F2 prefabricated access doors are specified. Retain article below for installation of field fabricated access doors.
			1.	Cut and remove installed insulation to dimension 2 inches (51 mm) larger than opening.
			2.	Seal cut edges of remaining insulation with aluminum foil tape.
			3.	Cut access opening in duct.
			4.	1/4 inch (6.4 mm) diameter threaded rod to corners of opening.
	** NOTE TO SPECIFIER ** Use the following optional article to specify easy removal of insulation.
			5.	Cover rods with hollow steel tubes.
			6.	Cut 16 gauge cover plate with dimensions 2 inches (51 mm) larger than opening.
			7.	Drill holes in cover plate to match rod pattern.
			8.	Place 1/2 inch (12.7 mm) ceramic fiber or unfaced FyreWrap blanket gasket between duct and access door cover.
			9.	Install cover over rods.
	** NOTE TO SPECIFIER ** Specify a minimum of 4 pins for ducts with single layer insulation, and a minimum of 5 pins for ducts with a double layer of insulation. For the double layer system, the pins should not be spaced greater than at 12 inch (305 mm) centers.
			10.	Single Layer: Weld 4 steel insulation pins to outside of door panel, 1 inch (25.4 mm) from corners.
			11.	Double Layer: Weld 5 steel insulation pins to outside of door panel, 1 inch (25.4 mm) from corners.
			12.	Cut first insulation piece to size of access door, seal cut edges with aluminum foil tape and install over pins within cutout area.
			13.	Cut second insulation piece with dimensions 2 inches (51 mm) larger than first piece, seal cut edges with aluminum foil tape and install over pins.
	** NOTE TO SPECIFIER ** Include the following article for access door openings in ducts where the 2-layer system has been used. Delete if not required.
			14.	Cut third insulation piece (for 2-Layer grease duct systems only) with dimensions 2 inches (51 mm) larger than second piece, seal cut edges with aluminum foil tape and install over pins.
			15.	Place washers on pins and bend over excess pin lengths.
			16.	Place washers on threaded rods and secure with nuts.
		B.	Pre-fabricated: Ductmate Industries - Ultimate and F-2 access door to be prefabricated from 16 gauge steel and installed as one unit.
	** NOTE TO SPECIFIER ** Duct Support Systems: FyreWrap insulation is not required to protect most support components. Refer to manufacturer's Product Information Sheets for additional details and requirements. ** NOTE TO SPECIFIER ** Regular maintenance of Unifrax FyreWrap is not required when installed as per installation instructions. The following article specifies repair procedures should damage occur
	3.5	MAINTENANCE
		A.	Cut banding or insulation washers on damaged blanket areas and remove.
		B.	Cut and remove damaged blanket.
		C.	Cut new blanket piece with exact dimensions as that removed and install on ductwork in same configuration as previously used in compliance with required material overlaps and attachment methods.
		D.	Ensure same minimum overlap is created.
		E.	Replace permanent attachment.
	3.6	FIELD QUALITY CONTROL
	** NOTE TO SPECIFIER ** Use the following Articles only when manufacturer's field services are desired to verify the quality of the installed components. Establish the number and duration of periodic site visits required by Manufacturer and specify below. Consult Manufacturer for services required. Delete if field services are not required.
		A.	Have manufacturer of products supplied under this Section review Work involved in handling, installation/application and protection of its products, and submit written reports in acceptable format to verify compliance of Work with Contract.
		B.	Schedule site visits to review Work as installation is about to begin.
	3.7	PROTECTION
		A.	Protect installed products until completion of project.
		B.	Touch-up, repair or replace damaged products before Substantial Completion.
	END OF SECTION