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	SECTION 07417
	METAL ROOF UNDERLAYMENT
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	** NOTE TO SPECIFIER ** Colbond 1nc.; Metal roof underlayment products. . This section is based on the products of Colbond Inc., which is located at: P. O. Box 1057 1301 Sand Hill Rd. Enka, NC 28728 Phone Toll Free: 800-365-7391 Phone: 828-665-5000 Fax: 828-665-5009 Email: enka-engineered@colbond.com. Web Site: www.colbond-usa.com Colbond Inc. is a technology-based global producer of multi-dimensional matrix and nonwoven products. For over five decades Colbond has been marketing and selling the first unique matrix product Enkamat® in the erosion control industry. In the mid 1980's Enkadrain® and Enkasonic® became the first Enka-Engineered products for drainage and sound control and are known as the pioneers of three-dimensional technology in these markets. Colbond is committed to bringing valuable and high-quality products into the marketplace. Enka-Engineered Metal Roof Underlayment is a three-dimensional nylon matrix structure made of fused, entangled filaments used as a spacer to provide sound attenuation, thermal break, ventilation and drainage under any type of metal roof. It is used between ballast and loose laid, fully adhered, or mechanically attached roofs and between waterproofing membrane or weather barrier and roof panels in sloped roof applications.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete items below not required for project.
		A.	Metal Roof Underlayment.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
		A.	Section 07411: Metal Roof Panels.
		B.	Section 05300: Metal Roof Deck.
		C.	Section 06112 - Framing and Sheathing: Plywood roof deck substrate.
		D.	Section 06150 - Wood Decking.
		E.	Section 07212 - Board Insulation.
		F.	Section 07213 - Batt Insulation.
		G.	Section 07500 - Membrane Roofing.
		H.	Section 07600 - Flashing and Sheet Metal.
		I.	Section 07840 - Firestopping.
		J.	Section 07900 - Joint Sealers: Caulking and sealants.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
		A.	ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
		B.	ASTM D 5035 - Standard Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method).
		C.	ASTM D 5199 - Standard Test Method for Measuring the Nominal Thickness of Geosynthetics / Geotextiles.
		D.	ASTM D5261 - Test Method for Measuring Mass per Unit Area of Geotextiles.
		E.	ASTM G 53 - Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials.
	** NOTE TO SPECIFIER ** Edit the following to select the system(s) from the following paragraphs as required for the project and delete those not required. Indicated the extent of the system required on the Drawings.
	1.4	SYSTEM DESCRIPTION
		A.	Metal roof Underlayment:
			1.	Enka-Engineered Metal Roof Underlayment is a three-dimensional nylon matrix structure made of fused, entangled filaments used as a spacer to provide sound attenuation, thermal break, ventilation and drainage under any type of metal roof.
	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.	Verification Samples: For each product specified, two samples, minimum size 6 inches (150 mm) square, representing actual product,.
		D.	Manufacturer's Certificates: Certify products meet or exceed specified requirements.
	1.6	QUALITY ASSURANCE
		A.	Manufacturer Qualifications: Company specializing in roof ventilation and drainage composites with minimum five years documented experience.
		B.	Pre-Installation Meeting: Conduct pre-installation meeting to acquaint installers of roof underlayment, metal roofing and related work with project requirements, substrate conditions and manufacturer's installation instructions.
	1.7	DELIVERY, STORAGE, AND HANDLING
		A.	Store products in manufacturer's unopened packaging until ready for installation.
		B.	Handle and store product according to manufacturers recommendations.
		C.	Store products in a dry space where they are protected from exposure to harmful weather conditions. Rolls should be stored in a clean, flat location where rolls can stand upright.
	1.8	SEQUENCING
		A.	Ensure that information required for installation of products of this section are furnished to affected trades in time to prevent interruption of construction progress.
		B.	Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.
	** NOTE TO SPECIFIER ** Delete any references below not relevant to this project; add others as required.
	1.9	COORDINATION
		A.	Coordinate with Work of Section 05300 for installing metal roof deck.
		B.	Coordinate with Work of Section 06112 for installing plywood roof deck.
		C.	Coordinate with Work of Section 06150 for installing wood roof deck.
		D.	Coordinate with Work of Section 07610 for installing sheet metal roofing.
		E.	Coordinate with Work of Section 07212 or 07213 for insulation installed within roof assembly.
		F.	Coordinate with Work of Section 07500 for installing membrane roofing.
	1.10	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: Colbond Inc., which is located at: P. O. Box 1057 1301 Sand Hill Rd. ; Enka, NC 28728; Toll Free Tel: 800-365-7391; Tel: 828-665-5000; Email: request info; Web: www.colbond-usa.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 ** Enkamat is suitable for use with ballasted and metal roofing applications where spacing of the roof will provide the ventilation and drainage needed for a long service life. The nylon filaments provide continuous support for the load of the roof and the rigors of the construction environment, including construction foot traffic. The space between the roof membrane/weather barrier underlayment and the ballast/ metal roof will allow any moisture to flow away or evaporate. Contact the manufacturer for additional information.
	2.2	MATERIALS
		A.	Enkamat 7008/7010: Enkamat 7008/7010 is a three-dimensional multi-use mat, manufactured of continuous nylon filaments fused at their intersections.
		B.	Physical Properties
			1.	Material: Nylon 6.
			2.	Thickness: 0.40 inches (11.43 mm) when tested in accordance with ASTM D 5199.
			3.	Weight: 8.0 oz/yd (271.3 g/sq m) when tested in accordance with ASTM D 5261.
			4.	UV Stability: 80 percent strength retained when tested in accordance with ASTM G 53 and ASTM D 5035.
			5.	Low Temperature: minus 100 degrees F (minus 73 degrees C).
			6.	High Temperature: 250 degrees F (121 degrees C).
			7.	Fuel/Gasoline Submersion: Stable.
			8.	Tensile Strength: MD 160 lbs/ft (MD 2.3 kN/m), CD 80 lbs/ft (CD 1.2 kN/m) when tested in accordance with ASTM D 5035.
			9.	pH Range: 3 to 12.
			10.	Fire Rating: NFPA Class A (will not promote flame spread). UBC Class I when tested in accordance with ASTM E 84.
			11.	Flame Spread 25 when tested in accordance with ASTM E 84.
			12.	Smoke Density 30 when tested in accordance with ASTM E 84.
	** NOTE TO SPECIFIER ** With insulation and an installed ceiling the reduction is 21.5 dB. Every 10 dB reduction in sound cuts the noise level in half. Complete test results are available upon request.
		C.	Acoustical Properties: International test results show a 9.5 - 13.5 dB reduction in noise when using an entangled filament underlayment vs. a metal roof applied directly to the sheathing.
	PART 3	EXECUTION
	3.1	EXAMINATION
		A.	Do not begin installation until substrates have been properly prepared.
	** NOTE TO SPECIFIER ** The following two paragraphs are for varying substrate conditions. Select the required paragraph or edit as required and delete the paragraph(s) not required. Acceptable sheathing types typically include plywood, particle board, insulation board and metal decking. Consult your local building code for allowable substrates.
		B.	Wood and Metal Deck Substrate:
			1.	Inspect roof deck to verify deck is clean and smooth, free of depressions, waves, or projections, and properly sloped.
			2.	Verify deck is dry and joints are solidly supported and fastened.
			3.	Verify wood nailers are installed and correctly located.
		C.	Structural Framing Substrate:
			1.	Verify primary and secondary framing members are installed and fastened, properly aligned and sloped.
			2.	Verify damaged shop coatings are repaired with touch up paint.
		D.	Verify roofing, roofing termination and base flashings are in place, sealed, and secure.
		E.	Verify insulation is installed and ready for roof application.
		F.	Verify roof openings, curbs, pipes, sleeves, ducts, or vents through roof are solidly set, and nailing strips located.
		G.	If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
	3.2	PREPARATION
		A.	Clean surfaces thoroughly prior to installation.
		B.	Deck Surface: Ensure the sheathing is sound, smooth, clean and dry, that there are no voids, protrusions or conditions that would interfere with the system performance.
		C.	Ensure sheathing is flat within 1/4 inch (6.4mm) in a 4 foot (1.2 m) radius and free from any notable deflections or indentions.
		D.	Weather Barrier should be properly installed on sheathing according to manufacturers recommendations.
		E.	Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
	3.3	INSTALLATION
		A.	Install in accordance with manufacturer's instructions.
		B.	Enkamat, is relatively lightweight and because of this, it is difficult to install during high wind conditions. Because of safety and quality issues, installation under these conditions is not recommended.
		C.	Enkamat may be installed horizontally (parallel with the ridge) or vertically (parallel with the slope). The vertical method works best with most sloped roof applications as it can be installed as the metal roofing is installed. It is sometimes desirable to completely install the Enkamat over the weather barrier to protect the barrier from scuffing, tearing or other damage during construction.
		D.	Underlayment should be loose laid and any wrinkles smoothed out, starting at the top of to the ridge and down to the other eave. Begin the next row of Enkamat oriented in the same direction and butted to the previous piece. Do not overlap.
		E.	Enkamat can be attached with staples, galvanized roofing nails or cap nails. Attachment should be sufficient to assure that underlayment does not slide or tear during installation of primary roof covering.
		F.	At the ridge, the top piece should overlap the ridge a minimum of 6 inches (152 mm). Coordinate with ridge vent manufacturer if ridge ventilation of the attic space is required. Follow ridge vent manufacturer's guidelines for proper installation of weather barrier.
		G.	End Joints: Butt the two pieces of Enkamat together. Avoid overlapping the entangled filament mats which creates an uneven underlayment thickness.
		H.	Penetrations: Trim around all penetrations, such as pipes, vents, conduits or other elements with a utility knife or scissors being careful not to damage the weather barrier.
		I.	For some rake edge (sloped edge of roof) details it may be necessary to leave extra Enkamat to wrap over facing and provide ventilation at rake or other metal trim.
		J.	Enkamat should not be left uncovered for more than 60 days
	3.4	PROTECTION
		A.	Protect installed products until completion of project.
		B.	Touch-up, repair or replace damaged products before Substantial Completion.
	END OF SECTION