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CSI Master Format 2004 Guide Specification for

Mörkaskog Wide-Plank Engineered Flooring

Manufacturer Contact Information Rappgo AB SE-360 42 Braås Sweden TEL: +46 (474) 55300 FAX: +46 (474) 55310 www.rappgo.se Introduction This guide specification was prepared to assist architects and designers with the preparation of their project specifications. This guide is based on the CSI Master Format 2004 and also references the CSI Master Format 1995 still in widespread use. The specifier should delete all unnecessary sections, paragraphs and references. The entire product range for Mörkaskog Wide-Plank Flooring is included (Article 2.02). The specifier should delete products not required from the specification. Several installation methods are included (Article 3.03). The specifier should delete methods not required. A similar guide specification based on the CSI Master Format 1995 is also available. Instructions and Notes to the specifier are shown between the # symbols and brackets #[Bold]#. These Instructions and Notes should be removed from the final document. (You may delete all of these at once using the replace function in MS Word. Go to EDIT>REPLACE, Click the "more" button, check the "use wildcards" box and type #*# in the "find" box. Type the space key in the "replace" box and click the "replace all" button). Outline Specification An Outline version of this specification is also available for use in project development stages. Please visit www.swedishflooring.com to download the Outline Specification. Other Information The Design Guide for Morkaskog Engineered Flooring and other informative documents are available for download at www.swedishflooring.com. Distributor Contact Information: Swedish Flooring 1106 Harris Ave, Suite 310 Bellingham WA 98225 TEL: 360-752-0350 FAX: 866-830-5719 www.swedishflooring.com

SECTION 09 64 33 Laminated Wood Flooring

PART 1 ­ GENERAL 1.01 SECTION INCLUDES A. Wide-plank Single-strip Engineered Wood Flooring: 1. Types: #[Delete unnecessary types]# a. Mörkaskog Factory Finished Acrylic Varnish Flooring. b. Mörkaskog Factory Finished Natural Oil Flooring. c. Mörkaskog Unfinished Factory-Sanded Flooring. d. Mörkaskog Thermo Treated Flooring in the above types. e. Mörkaskog Wood Transitions and Accessory items. 1.02 RELATED REQUIREMENTS A. Related Sections Include: #[Select applicable]# 1. CSI Master Format 1995: a. Section 01710 Existing Conditions. b. Section 03300 Cast in place Concrete. c. Section 03350 Concrete Finishing. d. Section 03360 Concrete Finishes. e. Section 03500 Cementitious Decks and Underlayment. f. Section 06100 Rough Carpentry. g. Section 06160 Underlayment. h. Section 06200 Finish Carpentry. #[abutting millwork]# i. Section 06430 Wood Stairs and Railings. j. Section 06450 Wood Base and Shoe Molding. k. Section 09578 Sanding and Finishing. l. Section 09615 Marble Flooring. #[ (Abutting finishes]# m. Section 09625 Slate Flooring. #[Abutting finishes]# n. Section 09635 Brick Flooring. #[Abutting finishes]# o. Section 09666 Resilient Flooring. #[Abutting finishes]#) p. Section 09685Carpet. #[Abutting finishes]#) q. Section 09922 Painting Wall Coverings; 09922.3400 Floor Varnishing. r. Section 15700 Heating, Ventilating, and Air Conditioning Equipment. #[in floor heating systems]# s. Section 15900 HVAC Instrumentation and Controls. t. Section 15990 Mechanical Testing Adjusting and Balancing. u. Section 15750 Humidifiers. v. Section 15750 Humidity Control Equipment. w. Section 15770 Floor-Heating and Snow-Melting Equipment.

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1. CSI Master Format 2004: a. Section 00 31 19 Existing Condition Information. #[Use for TI and renovation work]# b. Section 02 22 00 Existing Conditions Assessment. #[Use for TI and renovation work]# c. Section 03 30 00 Cast-in-Place Concrete. d. Section 03 35 00 Concrete Finishing. e. Section 03 50 00 Cast Decks and Underlayment. f. Section 06 10 00 Rough Carpentry. g. Section 06 16 26 Underlayment. h. Section 06 16 29 Acoustical Underlayment. i. Section 06 20 00 Finish Carpentry. j. Section 06 43 00 Wood Stairs and Railings. k. Section 06 46 19 Wood Base and Shoe Moldings. l. Section 09 30 00 Tiling. #[Abutting finishes]# m. Section 09 63 00 Masonry Flooring. #[Abutting finishes]# n. Section 09 65 00 Resilient Flooring. #[Abutting finishes]# o. Section 09 66 00 Terrazzo Flooring. #[Abutting finishes]# p. Section 09 68 00 Carpeting. #[Abutting finishes]# q. Section 23 50 00 Central Heating Equipment. r. Section 23 84 13 Humidifiers. s. Section 23 84 00 Humidity Control Equipment. t. Section 23 83 00 Radiant Heating Units. u. Section 23 09 00 Instrumentation and Control for HVAC. v. Section 23 83 16 Radiant-Heating Hydronic Piping. w. Section 23 84 00 Humidity Control Equipment. 1.03 ALLOWANCES AND UNIT PRICES 1.04 REFERENCES A. These references form part of the specification to the extent indicated. B. American Society for Testing and Materials (ASTM) Tests. 1. ASTM D2394 Standard Test Method of Simulated Service Testing of Wood and Wood-Base Finish Flooring (General). 2. ASTM D4060 Standard Test Method of Abrasion Resistance of Organic Coatings by Taber Abraser (Wear resistance). 3. ASTM D3359 Standard Methods for Measuring Adhesion by Tape Test (Wear resistance). 4. ASTM D1308 Standard Method for Effect of Household Chemicals on Clear and Pigmented Organic Finishes (Chemical Resistance). 5. ASTM E 648 Standard Test Method for Critical Radiant Flux of Floor Covering systems Using a Radiant Heat Energy Source (Fire Performance). 6. ASTM E 662 Standard Test Method for Specific Optical Density of Smoke Generated by Solid Materials (Fire Performance). 7. ASTM 489 Standard Method for Using a James Machine (Slip Resistance). 8. ASTM D2394 Inclined Plane Method (Slip Resistance).

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9. ASTM E90 STC Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions (Sound). 10. ASTM E 413 Classification for Rating Sound Insulation (Sound). 11. ASTM E 492 IIC Standard Test Method For Laboratory measurement of Impact Sound Transmission Through Floor Ceiling Assemblies Using The Tapping Machine. (Sound). 12. ASTM C 518 Standard Test Method for Steady-State Flux Measurements and Thermal Transmissions Properties by Means of the Heat Flow Meter Apparatus. (Thermal Conductivity). C. NWFA Hardwood Flooring Technical Manual.

D. American National Standard for Laminated Wood Flooring, ANSI/HPVA LF, 1996.

E. Wooden Floors Over Under Floor Heating, The Swedish Flooring Trade Association (GBR),

Stockholm, September 2005.

F. European Union E1 formaldehyde emission standard. 1.05 DEFINITIONS A. Laminated Flooring: Multiple layers of wood bonded together with the long axis grain of each layer oriented at 90 degrees to the previous layer. B. Engineered Flooring: See Laminated flooring. C. Wear Layer: The uppermost visible layer of the multiple layers bonded together to create laminated flooring. Does not refer to floor finishes such as oil or varnish. D. Transition or Transition Strip: Materials or installation technique required where the flooring abuts other floor finishes or other millwork such as stairs, and railings. E. Sub-floor: The structural system and materials that support the engineered flooring installation. F. Underlayment: Sheet or roll material placed between the sub-floor and the laminated flooring. G. Moisture Vapor Retarder: Sheet, roll, or site applied liquid membrane installed between the sub-floor and the laminated flooring to retard moisture migration from the sub-floor to the laminated flooring. H. Floating: An installation system for laminated flooring where the floor boards are fastened to each other but are not fastened to the substrate or sub-floor. I. Nail-down: An installation system for laminated flooring that uses nails, screws or staples to fasten the laminated flooring to the sub-floor.

J. Glue-down: An installation system for laminated flooring that uses adhesive to fasten the laminated flooring to the sub-floor. K. Micro-bevel: A smoothing, easing or cutting of the top edges of the wear layer. Less than 1.0 mm. L. Single-strip: Wear layer is composed of only one continuous veneer or piece of wood.

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M. Plank: Piece of laminated flooring milled on four edges to join to another plank. 1.06 SYSTEM DESCRIPTION #[Delete if not required]# A. Provide a wide plank engineered flooring system compatible with in floor heating. 1.07 SUBMITTALS A. Submit and Coordinate per: 1. CSI Master Format 1995. a. 01300, Submittals. b. 01780 Closeout Submittals. 2. CSI Master Format 2004 . a. 01 33 00 Submittals. b. 01 78 00 Closeout Submittals. B. Manufacturer's Declaration of Content: Declaration of Content for all flooring and materials supplied shall include scientific name of species used in the wear layer and transition strips. C. Manufacturer's Catalog. D. Manufacturer's/distributor's Installation Guide. E. Quality Assurance Submittals: 1. Test data. #[Specify requirements]# 2. Manufacturer's SS-EN ISO 9001:2000 certification certificate. F. Closeout Submittals: 1. Manufacturer's/distributor's Care and Maintenance Guide. 2. Warranty Documents: As specified. G. Samples: Submit manufacturers samples for preliminary selection. Minimum size is 300 mm (5 7/8") by full width of one plank. H. Samples for Approval: Submit manufacturer's range of samples for verification. Minimum size is 600 mm (10 3/4") by full width of one plank. I. Samples for Mock-up: #[When a mock-up required]# Submit samples necessary to make a mock-up panel approximately 800 mm (31 ½") long and 3 planks wide.

J. Shop Drawings: 1. Coordinate with: a. CSI Master Format 1995: 01330 Shop Drawings, Product Data, and Samples. b. CSI Master Format 2004: 01 33 23 Shop Drawings, Product Data, and Samples. 2. Submit drawings showing floor layout pattern, expansion joints, inlays, direction of laminated planks in reference to the structural members of the sub-floor and the location and type of all transitions.

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1.08 QUALITY ASSURANCE A. Manufacturer's Qualifications: 1. Coordinate with: a. CSI Master Format 1995: 01430 Manufacturer Qualifications. b. CSI Master Format 2004: 01 43 13 Manufacturer Qualifications. 2. SS-EN ISO 9001:2000 Certification required. 3. 40 yrs manufacturing experience for engineered flooring required. B. Installer's Qualifications: 1. Coordinate with: a. CSI Master Format 1995: 01430 Installer Qualifications. b. CSI Master Format 2004: 01 43 23 Installer Qualifications. 2. Previous experience installing laminated floor systems and accessories as specified in this section. 3. Professional Certification ­ #[Delete if not required]# a professional certification from NWFA (National Wood Flooring Association) or other certificate attesting competence. C. Mock-ups: 1. Coordinate with: a. CSI Master Format 1995: 01450 Mock-up Requirements. b. CSI Master Format 2004: 01 43 39 Mockups. 2. Install in accordance with manufacturer's instructions. Obtain Architect's and Owner's approval of finish, color, texture, transitions, and workmanship. 3. Mock-up size: #[Specify]# 4. Maintenance: Maintain in accordance with manufacturer's instructions. 5. Protection: Protect the mockup for the duration of the construction process or until no longer required. Do not protect installation with membranes that may trap water vapor or moisture. 6. Incorporation in the work: Mock-up may be incorporated in the work upon Owner's approval. D. Pre-installation Testing: 1. Coordinate with: a. CSI Master Format 1995: 01450 Testing and Inspection Services. b. CSI Master Format 2004: 01 45 23 Testing and Inspecting Services. c. Conduct the following tests to verify compliance with manufacturer's installation requirements. #[Select appropriate tests]# 1) General: Comply with NWFA Technical Publication A100 "Water and Wood". 2) Moisture Testing for Concrete Subfloors:#[Specify appropriate tests]# a. Test concrete floors for moisture using ASTM F1869 Test Method for Measuring Moisture Vapor Emission Rate of Concrete Sub-floor using Anhydrous Calcium Chloride. b. Moisture Meter: Test concrete floor using a moisture meter approved by the meter manufacturer and calibrated for measuring moisture in concrete slabs. Moisture readings must be taken at depth, not on the surface. Follow meter manufacturers written instructions. 3) Moisture testing for Wood Subfloors:#[Specify appropriate tests]# a. Moisture Meter: Test wood subfloors using a pin-less moisture meter approved by the meter manufacturer and calibrated for measuring moisture in wooden floors. Follow meter manufacturer's written instructions.

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4) Level: Verify that the subfloor meets the manufacturer's requirements for surface finish . 5) Contaminants: Verify that the sub-floor is free of contaminants per the manufacturer's instructions. E. Regulatory Requirements: #[Specify as required]# 1.09 DELIVERY, STORAGE and HANDLING A. Deliver flooring in unopened packages bearing manufacturer's labels. B. Deliver flooring after completion of all wet work and after all moisture has dissipated from this work. Wet work includes but is not limited to concrete, plaster, tile, drywall, grouting, installation of in-floor heating systems, and painting. C. Store flooring in a warm, dry, well ventilated, and weather tight location. The environment of the storage area should be the same as the environment of the occupied building. Do not store flooring on concrete slabs that have not been tested satisfactorily for moisture. D. Do not open packages before installation. 1.10 PROJECT and SITE CONDITIONS A. Maintain temperature and humidity of all construction spaces and storage areas at the same levels as that of the occupied building for a period of 14 days prior to installation and continuously thereafter. Maintain indoor air humidity levels between 30% and 60% for two weeks before installation and continually thereafter. B. Maintain a daily record of humidity and temperature for a period of seven days prior to installation and weekly continually thereafter. Humidity and temperature records shall be stored at #[Specify location and format]# C. Comply with all requirements for Pre-installation Testing, Article 1.08 D, and all manufacturer requirements. 1.11 SEQUENCING and SCHEDULING A. General: These items must be completed before delivery and installation of flooring. B. Closure: Building must be watertight with all windows and doors installed. C. Drainage: Site surface drainage and roof drainage complete. D. Wet Trades: After completion of all wet work and after all moisture has dissipated from this work. Wet work includes but is not limited to; concrete, plaster, tile, drywall, grouting, installation of in-floor heating systems and painting. E. Floor Heating: In-floor heating system installed and operating for not less than 14 days.

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F. Environment: Environmental and humidity control system is operating for 14 days in installation and storage areas at the temperature and humidity of the occupied building. G. Pre-installation Testing: Is complete per Article 1.08 D, Pre-installation Testing. H. Proceed: Proceed with delivery and installation of flooring pending completion of inspection per Article 3.01, Examination. 1.12 WARRANTY A. Coordinate with general warranty requirements in: 1. CSI Master Format 1995: 01780 Product Warranties. 2. CSI Master Format 2004: 01 78 36 Warranties. B. Manufacturer's Warranty ­ Submit for Owner's acceptance manufacturer's standard warrantee document. 1.13 MAINTENANCE and PROTECTION A. General: Maintain and protect installed work at all times per the manufacturer's instructions. B. Barriers: Do not protect the work with plastic sheeting or vapor or moisture retardant sheets or membranes. C. Hard Surface: Install hard surface protection such as hardboard or plywood over Kraft paper. Kraft paper, hardboard or plywood shall be taped to prevent infiltration of dust and grit. 1.14 EXTRA MATERIALS A. Comply with: 1. CSI Master Format 1995: 01780 Maintenance Materials. 2. CSI Master Format 2004: 01 78 46 Extra Stock Materials. B. General: Furnish extra materials at the time of installation that match installed products in all characteristics in manufacturer's unopened packaging. C. Quantity: #[Specify quantity for each type]# D. Storage Environment: Store all extra materials in a warm dry place with temperature and humidity levels matching the occupied building. PART 2 ­ PRODUCTS 2.01 PRODUCTS and MANUFACTURERS A. Product Line: Mörkaskog Wide-Plank Engineered Flooring.

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B. Acceptable Manufacturer: Rappgo AB; SE-360 42 Braås, Sweden, TEL: 46­474- 55300 FAX: 46474-55310, www.rappgo.se. C. Distributor: Swedish Flooring; 1106 Harris Ave. Suite 310, Bellingham WA, TEL: 360-752-0350 FAX: 866-830-5719, www.swedishflooring.com. D. Substitutions: Not permitted. E. Substitutions in accordance with: 1. CSI Master Format 1995: 01630 Product Substitution Procedures. 2. CSI Master Format 2004: 01 25 00 Substitution Procedures. 2.02 MATERIALS A. Types: #[Specify from the available types]# 1. Mörkaskog Factory Finished Acrylic Varnish Flooring. 2. Mörkaskog Factory Finished Natural Oil Flooring. 3. Mörkaskog Unfinished Factory-sanded Flooring. 4. Mörkaskog Thermo Treated Flooring. #[In the above types]# 5. Mörkaskog Wood Transitions and Accessory items. B. Species: #[Select from available types]# 1. Larch, Larix deciduas. 2. Maple, Acer saccarum. #[Not suitable for in-floor heating]# 3. Ash, Fraxinus excelsior. 4. Birch, Betula pendula. 5. Yellow Pine, Pinus paulustrus. 6. Beech, Fagus sylvatica. #[Not suitable for in-floor heating]# 7. Oak, Quercus robur. 8. Pine, Pinus sylvestrus. 9. Walnut, Juglans regia. C. Wear Layer Grades: #[Select from available types. Check with distributor, www.swedishflooring.com, not all species are available in all grades]# 1. Swedish Life: Contains the fewest and smallest knots for the species, the most even grain, and may exhibit minor color variations. 2. Rustic Life: Contains knots with a wider assortment of sizes, and a lively grain pattern; color variations may occur. 3. Antique: Large knots and cracks, and a variety of grain patterns; color variations may occur. D. Color: #[Select from available types. Check with distributor, www.swedishflooring.com, not all species are available in all colors]# 1. White Ash: Planks selected predominantly for sapwood. 2. Natural. #[Applies to; Unfinished, Natural Oil or Acrylic Varnish]# 3. Thermo Treated. #[Not available for all species. Check with distributor, www.swedishflooring.com]# 4. Brown Oil. #[Not available for all species. Check with distributor]# 5. White Oil. #[Not available for all species. Check with distributor]#

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6. Lye. #[Not visible when floor is new. Retards color changes caused by light. Not available for all species. Check with distributor]# E. Finish: #[Select from available types. Check with distributor, www.swedishflooring.com, not all species are available in all finishes]# 1. Unfinished factory-sanded. 2. Factory finished acrylic varnish: 5 coats UV hardened factory applied finish. 3. Factory finished natural oil flooring: 2 coats factory machine-applied oil finish. F. Style: #[All styles are not available for all species. Check with distributor. Delete styles not required]# 1. Normal. 2. Nautic: Narrower planks alternating with a rubber strip. 3. Décor Strip: 10mm wide by 14 mm thick tongue and groove strip to be layed alternately with each flooring plank. 4. Brushed. G. Dimensions: 1. Single strip: Wear layer shall comprise one piece of wood. 2. Plank Width: #[All widths are not available for all species. Check with distributor]# a. 205 mm (8.07 inches). b. 185 mm (7.28 inches). c. 174 mm (6.85 inches). d. 140 mm (5.50 inches). e. 135 mm (5.31 inches). #[Nautic style only]# 3. Plank Thickness: #[23 mm is not available for all species. Check with distributor]# a. 14 mm (0.55 inches). b. 23 mm (0.91 inches). 4. Plank Length: #[Select from available]# a. Manufacturer's standard assortment. b. 2400 mm (94.50 inches). c. 2000 mm (78.74 inches). d. 1800 mm (70.75 inches). 5. Number of Laminations: Minimum number of laminations shall be five (5). 6. Wear Layer Thickness: Wear layer thickness shall be 4 mm (0.157"). 7. Edge Treatment of Wear Layer: Micro-bevel. 8. Joint Design: #[Choose from types 1 or 2]# a. Tongue and Groove. b. RappLoc Click System. #[Not available for all species. Check with Distributor]# 2.03 ACCESSORIES A. Underlayments: Comply with flooring manufacturer's installation manual regarding the use of underlayments in various floor construction systems. #[Delete unnecessary types of underlayments]# 1. Vapor barrier: #[Delete unnecessary types of vapor barriers]# a. Membrane or sheet type. b. Site applied liquid type. #[Select for as an option for concrete subfloors or thin slab radiant heat subfloors]#

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2. Acoustic: Polyethylene, cork, or rubber underlayments rated by their manufacturers for use with engineered flooring systems. 3. Radiant heat compatible: Polyethylene, cork, or rubber underlayments rated by their manufacturers for use with in floor heating and engineered flooring systems. 4. Flooring Paper: Use a flooring paper rated by its manufacturer for use with engineered flooring systems. 5. Felt Paper: Use an Asphalted felt paper rated by its manufacturer for use with engineered flooring. B. Wood Floor Adhesive #[Delete unnecessary types]# 1. General: Use only adhesives rated by their manufacturers as compatible with engineered flooring systems and in-floor heating systems. 2. Adhesives must perform at 40 degrees Centigrade (104° F). 3. Concrete sub-floor adhesives: Use only adhesives rated by their manufacturers as compatible with engineered flooring systems installed over properly prepared concrete substrates. 4. Wood sub-floor adhesives: Use only adhesives rated by their manufacturers as compatible with engineered flooring systems installed over properly prepared wood substrates. C. Floor Finishing & Maintenance Materials: #[Specify where appropriate]# 1. Rappgo Master Oil. #[For use on unfinished factory sanded floors and unfinished transition pieces]# a. Natural color. b. White color. c. Brown color. 2. Rappgo Maintenance Oil: Site apply 1 coat after installation of factory oiled flooring. 3. Rappgo Floor Soap: Use to clean and maintain as specified in the flooring. manufacturer's/distributor's installation guide and maintenance guide. D. Transitions and Decoration: #[Not available for all species. Check with Distributor]# 1. T strip: Rappgo unfinished T-strip to be used at transitions, expansion joints and locations specified on architects drawings. Finish at the site. a. Dimensions: 20 mm x 65 mm (0.79" x 2.56"). 2. Stair Edging: Rappgo unfinished stair edging to be used at stair transitions, balcony transitions and locations specified on Architect's drawings. Finish at the site. a. Dimensions: 21 mm x 56 mm (0.83 " x 2.20"). 2.04 MIXES A. Floor finishing and maintenance materials shall not be diluted or mixed unless specified by the manufacturers' manuals or product labeling. 2.05 FABRICATION #[Use to specify custom stair tread and transitions]# A. Stair Treads and Risers: Fabricate to match flooring. 1. Related Sections: Coordinate with: a. CSI Master Format 1995. 1) 06200 Finish Carpentry. 2) 06430 Wood Stairs and Railings. b. CSI Master Format 2004.

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1) 06 20 00 Finish Carpentry. 2) 06 43 00 Wood Stairs and Railings. 2. Shop Manufacture: Contractor shall manufacture stair treads and risers from flooring supplied by the distributor. Stair treads and risers shall be manufactured by laminating flooring planks to furniture grade plywood so that the resultant panel is not less than 1.00 inches thick after sanding. 3. Contractor shall submit shop drawings showing dimensions, construction methods and materials. 2.06 SOURCE QUALITY CONTROL A. Products shall be sourced from an SS-EN ISO 9001:2000 certified manufacturer. 2.07 FORMALDEHYDE PERFORMANCE A. Flooring system shall meet the European E1 formaldehyde emission standard of 0.1ppm. PART 3 - EXECUTION 3.01 EXAMINATION A. Environmental Conditions: 1. Temperature and Humidity: Verify temperature and humidity of all construction spaces is at the same levels as that of the occupied building for a period of 14 days prior to installation. 2. Humidity: Maintain indoor air humidity levels between 30% and 60% for two weeks before installation and continually thereafter. B. Substrate Conditions: 1. Comply with NWFA Technical Publication A100 "Water and Wood". 2. Moisture: #[Select from the following]# a. Moisture testing for concrete subfloors: #[Select the required tests]# 1) Test concrete floors for moisture using ASTM F 1869, Test Method for Measuring Moisture Vapor Emission Rate of Concrete Sub-floor using Anhydrous Calcium Chloride. 2) Moisture Meter: Test concrete floor using a moisture meter approved by the meter manufacturer and calibrated for measuring moisture in concrete slabs. Moisture readings must be taken at depth, not on the surface. Follow meter manufacturer's written instructions. 3) Differential: The moisture variation between the engineered flooring and the wood subfloor must be less than 4%. Do not install flooring if differential is 4% or more. 4) Test results: Test results shall be less than 3lbs of water vapor emitted per 1,000 square feet in 24 hours. b. Moisture testing for wood subfloors: 1) Moisture Meter: Test wood subfloors using a pin-less moisture meter approved by the meter manufacturer and calibrated for measuring moisture in wooden floors. Follow meter manufacturer's written instructions. 2) Test results: Test results shall be 10% plus or minus 2%. 3) Differential: The moisture variation between the engineered flooring and the wood subfloor must be less than 4%. Do not install flooring if differential is 4% or more.

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3. Level: a. Surface Finish: Verify that the sub-floor meets the flooring manufacturer's requirements for surface finish. b. Flatness: Floor variations shall not exceed +/- 3mm over 2 meters (0.144 inch over 8 feet). 4. Contaminants: Verify that the sub-floor is free of contaminants per the flooring manufacturer's instructions. C. Wood Subfloor Fasteners: Ensure that all sub-floor panels are fastened securely and there are no protruding fasteners. D. Wood Subfloor Expansion Joints: Verify that all sub-floor panels have 1/8" expansion joints on all sides. E. Wood Subfloor Sub-floor Thickness: Verify that sub-floor is ¾ " thick plywood or two, ½" thick sheets, of plywood. F. Documentation: Document the Examination for both passed and failed tests. 3.02 PREPARATION: A. Remedy: Remedy any problem found in the examination phase. Re-test and document the test results. B. Cleaning: Clean all surfaces prior to installation. C. Humidity: Maintain indoor air humidity levels between 30% and 60% for two weeks before installation and continually thereafter. D. Temperature: Maintain temperature of materials and installation area between 18° C and 20° C (64°F and 68°F) during installation. E. Floor Heating #[Select required types]# 1. Tube Under Wood Subfloor Systems: a. Run system at normal operating temperature for 1 week prior to commencing flooring installation. b. Turn off all floor heating systems 24 hours prior to beginning engineered flooring installation. 2. Radiant Panel Systems: #[Such as Warmboard and Quick-Trak]# a. Run system at normal operating temperature for 1 week prior to commencing flooring installation. b. Turn off all floor heating systems 24 hours prior to beginning engineered flooring installation. 3. Concrete Thin Slab Systems: Slabs up to 3" thick. a. Run system at normal operating temperature for 1 week prior to commencing flooring installation. b. Turn off all floor heating systems 24 hours prior to beginning engineered flooring installation. 4. Concrete Slab Systems: Slabs greater than 3" thick. a. Run system at normal operating temperature for 4 weeks prior to commencing flooring installation.

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b. Turn off all floor heating systems 48 hours prior to beginning engineered flooring installation. 5. Temporary Heat: Provide supplemental heat to maintain the installation environment between 18° C and 20° C (64°F and 68°F) during installation. F. Moisture Content: Test all boards for moisture content. Do not proceed with installation the difference in moisture content between the boards and the subfloor is greater than 4%. G. Vapor Barrier Underlayment: Install a vapor barrier underlayment in accordance to manufacturer's written instructions. H. Underlayment: #[Select from these types]# 1. Acoustic underlayment: Install in accordance with underlayment manufacturer's written instructions. 2. Radiant heat underlayment: Install in accordance to underlayment manufacturer's written instructions. 3. Asphalted Felt. 4. Flooring Paper. I. Examination of Product: Inspect each plank of flooring before installation. Do not install planks that are defective or damaged. Save defective planks for replacement by manufacturer. manufacturer will not warranty product installed with visible defects. INSTALLATION #[Specify installation type, delete types not needed]# A. Coordinate with: 1. CSI Master Format 1995. a. 06200 Finish Carpentry. b. 15700 Heating, Ventilating, and Air Conditioning Equipment. 2. CSI Master Format 2004 . a. 06 20 00 Finish Carpentry. b. 23 83 16 Radiant-Heating Hydronic Piping. B. Floating Installation. 1. Pattern: Lay flooring in the pattern specified by the Drawings, Shop Drawings or as directed by the Architect. 2. Instructions: Follow flooring manufacturer's written instructions for flooring installation. 3. Adhesive: Apply adhesive continuously two both sides of the groove on sides and ends of planks. 4. Expansion Joints: Provide expansion joints as specified by the flooring manufacturer. a. At perimeter of all rooms provide 12mm (½") for rooms up to 12 meters (39'-4.5") by 8 meters (26'-3"). b. Provide additional expansion joints if the length of the floor exceeds 12 meters (39'-4 ½"). c. Provide additional expansion joints if the width of the floor exceeds 8 meters (26'-3"). d. At all flooring penetrations 10mm (3/8"). C. Glue Down Installation. 1. Pattern: Lay flooring in the pattern specified by the Drawings, Shop Drawings or as directed by the Architect. 2. Instructions: Follow flooring manufacturer's written instructions for flooring installation.

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3.03

3. Adhesive Plank to Plank: Apply adhesive continuously two both sides of the groove on ends of planks. 4. Adhesive to Sub-floor: Use an adhesive approved by the flooring manufacturer for wood subfloors or concrete subfloors. a. Apply a flooring adhesive to the sub-floor as specified by the adhesive manufacturer's written instructions. b. Do not allow adhesive to set or skin-over before flooring installation. 5. Expansion Joints: Provide expansion joints as specified by the flooring manufacturer. a. At perimeter of all rooms provide 12mm (½") for rooms up to 12 meters (39'-4.5") by 8 meters (26'-3"). b. Provide additional expansion joints if the length of the floor exceeds 12 meters (39'-4 ½"). c. Provide additional expansion joints if the width of the floor exceeds 8 meters (26'-3"). d. At all flooring penetrations 10mm (3/8") on all sides. D. Nail Down Installation. 1. Pattern: Lay flooring in the pattern specified by the Drawings, Shop Drawings or as directed by the Architect. 2. Instructions: Follow flooring manufacturer's written instructions for flooring installation. 3. Fasteners: a. Nails: Use only nails designed and approved by their manufacturer for use in engineered wood flooring systems. b. Screws: Use screws recommended by the flooring manufacturer. c. Staples: Use only staples designed and approved by their manufacturer for use in engineered wood flooring systems. 4. Fastener Schedule: a. Drive fasteners through the tongue of the plank at a 45 degree angle. b. Do not place fasteners in the ends of the planks. c. Space fasteners no more than 8" (20cm) apart. 5. Expansion Joints: Provide expansion joints as specified by the flooring manufacturer. a. At perimeter of all rooms provide 12mm (½") for rooms up to 12 meters (39'-4 ½"). by 8 meters (26'-3"). b. Provide additional expansion joints if the length of the floor exceeds 12 meters (39'-4 ½"). c. Provide additional expansion joints if the width of the floor exceeds 8 meters (26'-3"). d. At all flooring penetrations 10mm (3/8") on all sides. E. Rapploc Click Installation. 1. Pattern: Lay flooring in the pattern specified by the Drawings, Shop Drawings or as directed by the Architect. 2. Instructions: Follow flooring manufacturers written instructions for flooring installation. 3. Adhesive Plank to Plank: Do not apply adhesive when using Rapploc Click system. 4. Adhesive to sub-floor: Do not apply adhesive when using Rapploc Click system. 5. Expansion Joints: Provide expansion joints as specified by the flooring manufacturer. a. At perimeter of all rooms provide 12mm (½") for rooms up to 12 meters (39'-4 ½") by 8 meters(26'-3"). b. Provide additional expansion joints if the length of the floor exceeds 12 meters (39'-4 ½"). c. Provide additional expansion joints if the width of the floor exceeds 8 meters (26'-3"). d. At all flooring penetrations 10mm (3/8").

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3.04

FINISH #[Delete paragraph if using Factory finished Acrylic Varnish flooring. Delete unnecessary paragraphs]# A. Factory Finish Oiled Floors. 1. Coordinate with: a. CSI Master Format 1995. 1) 09000 Painting. 2) 09578 Sanding and Finishing. 3) 09922 Painting Wall Coverings. b. CSI Master Format 2004 . 1) 09 93 00 Staining and Transparent Finishing. 2) Instructions: Comply with finish manufacturer's written instructions. 3) Oil: a. Use only floor finishing oil approved by the flooring manufacturer. b. Apply one coat Rappgo Maintenance Oil. c. Excess Oil: Remove excess oil within 30 minutes of application. d. Use a floor buffing machine to buff the floor per floor manufacturer's written instructions. B. Unfinished Pre-sanded Floors with Site Applied Finish. #[Remove #2 if not needed]# 1. General: Coordinate with: a. CSI Master Format 1995. 1) 090000 Painting. 2) 09578 Sanding and Finishing. 3) 09922 Painting Wall Coverings. b. CSI Master Format 2004. 1) 09 93 00 Staining and Transparent Finishing. 2. Remove Microbevel: Remove microbevel from surface of installed flooring if directed by the Architect or the specifications. 3. Finish: Site apply floor finish in accordance with the floor finish manufacturer's written instructions within 48 hours of flooring installation. Failure to apply finish promptly may necessitate sanding or screening the floor prior to applying the floor finish.

3.04

CLEANING A. Manufacturer's Instructions: Comply with all manufacturer's written instructions. B. Dust: Remove all dust from the installation area. C. Adhesive: Remove excess cured and uncured adhesive from the flooring installation. D. Clean: Clean the floor using a floor soap in accordance with the floor manufacturer's written instructions.

3.05

BREAK-IN PERIOD #[Required for in floor heating systems]# A. Coordinate with: 1. CSI Master Format 1995.

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a. 15500 Mechanical HVAC. b. 15770 Floor-Heating. c. 15950 Mechanical Controls. d. 15990 Mechanical Testing Adjusting and Balancing. 2. CSI Master Format 2004. a. 23 50 00 Central Heating Equipment. b. 23 83 00 Radiant Heating Units. c. 23 09 00 Instrumentation and Control for HVAC. d. 23 83 16 Radiant-Heating Hydronic Piping. B. Floor Heating systems. 1. Break In Period: a. Do not turn on in floor heating systems until 48 hours after flooring installation and finishing is complete. b. Increase operating temperature gradually over 72 hours until a maximum of 23 degrees Celsius (73.4° degrees F) is reached at the floor surface in clear areas. Clear areas are areas not under rugs, carpet, equipment etc. 2. Maximum Temperature: The maximum surface temperature at the upper surface of the wear layer as measured under rugs, carpets, equipment and other furnishings shall never exceed 27 degrees Celsius (80.6°F). The maximum surface temperature in free areas shall not exceed 23 degrees Celsius (73.4° F). 3.06 PROTECTION A. General: Protect the flooring until the completion of the construction period using sheets of hardboard over Kraft paper. B. Traffic: Protect the floor from all traffic for 48 hours after final installation and finishing. Do not use protective membranes or coverings that may trap moisture. C. Furnishings and Equipment: Use protective furniture and equipment pads of a size sufficient to prevent denting the floor. Leave pads in place at the end of the construction period. D. Remove: Remove protective materials from the flooring at end of construction period. 3.07 SCHEDULES #[Insert finish schedules related to engineered wood flooring here]#

END OF SECTION

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Laminated Wood Flooring

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