SECTION 09 68 00 CARPETING PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Preparation of Surfaces to Receive Carpeting. 2. Carpet: 3. a. Furnished by Owner, installed by Contractor b. Stretch-in Installation c. Direct-Glue-Down Installation d. Double-Glue-Down Installation e. Carpet with Attached-Cushion Installation f. Carpet with Preapplied Adhesive Installation Carpet Cushion: a. B. C. Furnished by Owner, installed by Contractor 4. Accessories, including tack strips, adhesives tapes and all other required accessories. 5. Transition edges 6. Carpet stair nosings Related Documents: 1. Seam Layout Drawings provided by Marriott International 2. Marriott International FF & E Specification Manual. Related Sections: 1. Section 03 30 00 (03300) - Cast-in-Place Concrete 2. Section 03 54 13 (03500) - Cementitious Decks and Underlayment 3. Section 09 65 00 (09650) - Resilient Flooring 1.02 REFERENCES A. B. ASTM International (ASTM) Publications: (Former American Society for Testing and Materials): 1. D5116 “Standard Guide for Small-Scale Environmental Chamber Determinations of Organic Emissions From Indoor Materials/Products” 1. F710 “Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring“ 2. F1869 “Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride” Federal Specifications (FS) ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 1 ▪ FILE: 106756377 2013, Marriott International, Inc. REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD 1. C. Carpet & Rug Institute (CRI) Publications: 1. D. CRI 104 Carpet Installation Standard Occupational Safety & Health Administration (OSHA) Regulations: 1. E. FS DDD-C-0095 Carpet and rugs, wool, nylon, acrylic, modacrylic, polyester, polypropylene OSHA Regulation 29 CFR Toxic and Hazardous Substances 1910-1200 Hazard Communication U.S. Department of Commerce (DOC) Publications: 1. Federal Flammability Standard DOC FF 1-70 (Methenamine Pill test ASTM D2859). 1.03 SUBMITTALS A. General: Submit the following in accordance with Conditions of Contract and Division 01 Specification Sections. B. Submit “Letter of Conformance” in accordance with Section 01 33 00 indicating specified items selected for use in project with the following supporting data. 1. A copy of the manufacturer's printed installation manual shall accompany Bid for review and approval by the Owner's Representative. 2. Shop Drawings showing layout and seaming diagrams. Indicate pile or pattern direction and locations and types of edge strips. Indicate columns, doorways, enclosing walls or partitions, built-in cabinets, and locations where cutouts are required in carpet. Show installation details at special conditions. 1.04 QUALITY ASSURANCE A. Installer Qualifications: Firm with not less than 5 years of experience in installation of commercial carpeting of type, quantity, and installation methods similar to work of this Section, or can demonstrate compliance with its certification program requirements. B. Successful vendor shall be responsible for field measurements to determine carpet layout. C. Carpet Surface Burning Characteristics: Provide carpet identical to that tested for the following fire performance characteristics, per test method indicated below, by UL, ASTM E648, or other testing and inspecting organizations acceptable to authorities having jurisdiction. Identify carpet with appropriate markings of applicable testing and inspecting organization. 1. Test Method: DOC FF 1-70 2. Rating: Pass D. The carpet contractor is responsible for reviewing carpet manufacturer's published installation instructions prior to installation. This includes understanding dye lots, pattern sequencing, pattern matching and any special instructions. Failure to abide by the manufacturer's instructions could result in a backcharge to contractor for corrections to the installation. E. Contractor is responsible for damages to work performed by others including but not limited to telephone or television wires placed in front of the tack-strip running the perimeter of the room. F. The installation contractor is responsible for verification of quantities within [fourteen (14) days] on new construction. The contractor shall provide take-offs of all carpet and padding, as required for a complete installation. No compensation will be allowed to the installation contractor for materials and labor that may be required to install additional carpeting because of incorrect quantity takeoffs. ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 2 ▪ REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD FILE: 106756377 2013, Marriott International, Inc. 1.05 DELIVERY, STORAGE, AND HANDLING A. General: Comply with the Carpet and Rug Institute's CRI 104, Section 05: "Storage and Handling”. B. Do not deliver carpet until areas of building are ready for carpet installation. protection from loss or damage. C. Store materials in original undamaged packages and containers, inside well-ventilated, dry area protected from weather, moisture, soilage, extreme temperatures and humidity. Lay flat, blocked off ground. Maintain minimum temperature of 68 degrees F. (20 degrees C.) at least three days prior to and during installation in area where materials are stored. Never stack carpet more than two rolls high or stand up on roll ends on job site. Do not bend or fold carpet in storing. D. Carpet shall never be stacked more than five (5) rolls high. Provide 1.06 PROJECT CONDITIONS A. General: Comply with CRI 104, Section 07: "Site Conditions”. B. Do not commence with carpet installation until painting and finishing work is complete and ceilings and overhead work has been tested, approved, and completed. C. In areas to receive carpet, room temperatures shall be maintained at 65-90 degrees F and with relative humidity ranging between 20 and 65 percent minimum for 72 hours prior to, during, and 72 hours following application. Materials shall be conditioned at application temperature and humidity at least 24 hours prior to application. Provide sufficient lighting for carpet installation. D. Contractor shall provide method approved by the Architect to mechanically exhaust all spaces to receive carpet to the exterior during installation and a minimum of 72 continuous hours, or length of time required by the manufacturer or Owner after installation. E. Subfloor Moisture Conditions: Before installing carpet Contractor shall verify that Moisture emission rate of not more than 3 lb/1000 sq. ft./24 hours when tested by calcium chloride moisture test in compliance with CRI 104, 6.2.1, with subfloor temperatures not less than 55 deg F, or as recommended by manufacturer. F. Subfloor Alkalinity Conditions: Before installing carpet Contractor shall verify that a pH range of 5 to 9 when subfloor is wetted with potable water and pHydrion paper is applied. 1.07 WARRANTY A. Stretch-in installation labor shall be guaranteed for one (1) year. Sixty days after installation, the Subcontractor is to re-stretch all carpet where necessary and as directed by Marriott Representative. B. Tred-Mor Dubl-Stik installation labor shall be guaranteed for five (5) years. C. The adhesive manufacturers offer five (5) year warranty on their adhesives used on a TredMor Dubl-Stik installation. D. It is the carpet Contractors responsibility to fill out the adhesive manufacturer warranties. The warranty must be returned to the adhesive manufacturer and a copy sent to the Contractor’s representative. 1.08 EXTRA MATERIALS A. Refer to Section 01 78 43 (01790) for requirements. ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 3 ▪ FILE: 106756377 2013, Marriott International, Inc. REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD PART 2 PRODUCTS 2.01 MATERIALS A. Carpet: Refer to Interior Finish Index 2.02 CARPET CUSHIONS A. The following carpet cushion information is provided solely for use by the Contractor to determine locations. B. Rubber padding - 50 oz. Badger waffle type pad shall be installed in Guest Rooms and suites unless TredMor pad is specified. C. Rubber padding - 68 oz. Granite IV flat type pad shall be installed in Public Areas and Guest Room Corridors unless Tred-Mor pad or direct glue-down is specified. D. 1. Rubber padding shall be cemented to the floor with a liquid mastic around the perimeter and in an use pattern across the field. 2. Rubber padding joints shall be at a right angle to all carpet seams. When this is not practical, shift the pad so that the joints are several inches from the carpet seams. All padding joints shall be taped. Tred-Mor Padding: 1. 1562 used in Ambulatory Guest Rooms (except at ADA accessible Guest Rooms) 2. 2568 used in Guest Room Corridors and other Public Areas not listed below 3. 2580 used in Assembly Areas 2.03 ACCESSORIES A. Seaming: Hot-melt seaming adhesive or similar product recommended by carpet manufacturer for taping seams and buttering cut edges at backing to form secure seams and prevent pile loss at seams. B. Hot melt tape – (all stretch installation areas except Dubl-Stik installations) 1. Avendra, LLC Preferred Manufacturers: a. 2. Approved Manufacturers: a. C. “6 inch - Super 3S Tape”; ORCON (800-227-0601) Carpet and Accessory Adhesives: (All direct glue-down areas except double-stik installations) 1. Non-staining type as recommended by carpet manufacturer for use intended, complying with the following: a. D. None Adhesive: As recommended by carpet manufacturer for use intended, complying with the following: Adhesive shall be antimicrobial with no hazardous vapors and contain no carcinogenic materials, per OSHA Regulation 29 CFR 1910-1200. All containers shall contain material safety data sheets (MSDS) and be available at job site for inspection. Carpet Adhesive - Dubl-Stik Installation 1. Avendra, LLC Preferred Manufacturers: a. 2. None Approved Manufacturers: ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 4 ▪ REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD FILE: 106756377 2013, Marriott International, Inc. E. a. “SS-5” ("Safe-Set"); CHAPCO (Chicago Adhesive Products, Co.) (800-621-0220) b. “Parabond” Dubl-Stik DS-902; Para-Chem, Inc. (800-763-7272) c. “ECO 220”; Mapei Corp. (800-426-2734) Carpet Seam Adhesive - Dubl-Stik Installation 1. This product shall be used to join the primary backs of tufted carpet and the woven backs of Axminster carpet together. a. 2. Avendra, LLC Preferred Manufacturers: a. 3. F. Approved Manufacturers: a. “Seam Cement #112”; CHAPCO (Chicago Adhesive Products, Co.) (800-621-0220) b. “Parabond Premium Latex Seam Sealer M267”; Para-Chem, Inc. (800-763-7272) c. “Ultrabond ECO 2085”; Mapei Corp. (800-426-2734) d. Substitution as approved by Marriott International Avendra, LLC Preferred Manufacturers: a. 2. None Approved Manufacturers: a. H. None Hot Melt Tape - Dubl-Stik Installation 1. G. All seam adhesives shall be latex type. “CT-7DS”; ORCON (800-227-0601) 3. NOTE: MANDATORY USE WITH BRINTONS AND COURISTAN CARPETS 4. The use of hot melt tape is optional and depends on the carpet installer's preference. There are instances during some installations, such as pattern matching, where the hot melt tape may simplify and speed up installation. 5. CAUTION: DO NOT USE A SILICONE TREATED TAPE. THE SILICON WILL PREVENT THE ADHESIVE FROM ADHERING TO THE BACK SIDE OF THE TAPE. Tack Strips: 1. Water-resistant plywood strips as required to match pad thickness and in compliance with CRI 104, Section 11.3. 2. Commercial with 3 rows of pins. a. Type 1: Pre-nailed (Concrete) for anchoring into concrete sub-floor. b. Type 2: Extra long nails for cementitious leveling bed over plywood sub-floor. Concrete Leveling and Patching compounds: 1. For areas up to 4 square feet: a. Feather finish, use to smooth ridges, fill cracks, gouges and joints. 1) "SD-F"; Ardex (724-203-5000) 2) “Planiprep FF”; Mapei Corp. (800-426-2734) 3) “Versa Patch”; TEC Specialty Products, H.B. Fuller Construction Products, Inc. (800-832-9023) ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 5 ▪ FILE: 106756377 2013, Marriott International, Inc. REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD 4) b. c. Trowelable underlayment patch for thickness from feather edge to 3 inch without aggregate 1) “Quickpatch”; Mapei Corp. (800-426-2734) 2) “Fast Set Deep Patch”; TEC Specialty Products, H.B. Fuller Construction Products, Inc. (800-832-9023) 3) “NXT Level Plus with NXT Primer”; Laticrete International Inc. (800-243-4788) Trowelable underlayment patch for thickness up to ½ inch without aggregate; up to 1 inch with aggregate. Can be feather edged. 1) 2. “NXT Level Plus with NXT Primer”; Laticrete International Inc. (800-243-4788) "SD-P/ Primer P-82"; Ardex (724-203-5000) For areas exceeding 4 square feet: a. Self-leveling, pourable or pumpable underlayment for thicknesses up to 5 inches. Can be feather edged. 1) "K-15/Primer P-51"; Ardex (724-203-5000) 2) “Novoplan 2/Primer”; Mapei Corp. (800-426-2734) (Note: Refer to product datasheet for specific requirements based on substrates) 3) “EZ Level TA-323/Multi Purpose Primer”; TEC Specialty Products, H.B. Fuller Construction Products, Inc. (800-832-9023) 4) “NXT Level with NXT Primer”; Laticrete International Inc. (800-243-4788) 2.04 TRANSITION EDGES A. PART 3 Carpet Transition Edges: Refer to Interior Finish Index and Section 09 65 00 (09650). EXECUTION 3.01 EXAMINATION A. Examine substrates, areas, and conditions for compliance with requirements for maximum moisture content, alkalinity range, installation tolerances, and other conditions affecting carpet performance. Verify that substrates and conditions are satisfactory for carpet installation and comply with requirements specified. B. Concrete Subfloors: General Contractor shall verify that concrete slabs comply with ASTM F710 and the following: 1. Slab substrates are dry and free of curing compounds, sealers, hardeners, and other materials that may interfere with adhesive bond. Determine adhesion and dryness characteristics by performing bond and moisture tests recommended by the carpet and carpet cushion manufacturers, including ASTM F1869. It is essential that moisture tests be taken on all concrete floors regardless of age and grade level. The test should be in accordance with ASTM F1869 Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride. One test should be conducted for every 1000 sq. ft. of flooring and the results not exceed 3 lbs. Per 1000 sq. ft. in 24 hours. If the test results exceed the limitations, the installation must not proceed until the problem has been corrected. 2. Subfloor Alkalinity Conditions: Before installing carpet Contractor shall verify that a pH range of 5 to 9 when subfloor is wetted with potable water and pHydrion paper is applied. ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 6 ▪ REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD FILE: 106756377 2013, Marriott International, Inc. C. 3. Subfloor finishes comply with requirements specified in Division 03 Section “Cast-inPlace Concrete” for slabs receiving carpet. 4. Subfloors are free of cracks, ridges, depressions, scale and foreign deposits. Sand smooth or fill voids to obtain a smooth level substrate, any noticeable deviation in flooring may be rejected. 5. Ensure floors are level with maximum surface variation of ¼” in 10’. Report conditions contrary to Contract requirements which would prevent a satisfactory installation. Proceed with installation only after unsatisfactory conditions have been corrected, as approved by General Contractor. 1. Failure to call attention to any defects or imperfections will be construed as acceptance and approval of the subfloor. 2. Installation indicates acceptance of substrate conditions at the time of installation. 3.02 SITE ENVIRONMENTAL PROCEDURES A. Indoor Air Quality: 1. Temporary ventilation: a. 2. Ventilate products prior to installation. Remove from packaging and ventilate in a secure, dry, well-ventilated space free from strong contaminant sources and residues. Provide a temperature range of 60 degrees F minimum to 90 degrees F maximum for minimum 72 hours. Do not ventilate within limits of Work unless otherwise approved by Architect. Immediately after installation, clean carpet thoroughly with a high-efficiency particulate air (HEPA) filtration vacuum. 3.03 PREPARATION A. General: Comply with CRI 104, Section 6.2, “Site Conditions; Floor Preparation,” and carpet manufacturer’s written instructions for preparing substrates indicated to receive carpet installation. B. Use trowelable leveling and patching compounds, according to manufacturer’s written instructions, to fill cracks, holes, and depressions in substrates. 1. C. Level subfloor within 1/4" in 10', noncumulative, in all directions. Sand or grind protrusions, bumps, and ridges. Patch and repair cracks and rough areas. Fill depressions. Remove coatings, including curing compounds, and other substances that are incompatible with adhesives and that contain soap, wax, oil, or silicone, without using solvents. Use mechanical methods recommended in writing by the following: 1. Carpet manufacturer 2. Carpet cushion manufacturer 3.04 INSTALLATION A. Direct-Glue-Down Installation: Installation” Comply with CRI 104, Section 8, “Direct Glue-Down 1. In the case of direct glue-down, carpet glued to floor, no padding required, follow the manufacturers specifications. 2. Milliken modular carpets and Collins & Aikman uniback carpet requires the use of their own adhesives when installing their products. ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 7 ▪ FILE: 106756377 2013, Marriott International, Inc. REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD Comply with CRI 104, Section 9, “Double Glue-Down B. Double-Glue-Down Installation: Installation” C. Carpet with Attached-Cushion Installation: Cushion” D. Carpet with Preapplied Adhesive Installation: Applied Adhesive Systems” E. Stretch-In Installation: Comply with CRI 104, Section 11, “Stretch-In Installation” Comply with CRI 104, Section 10, “Attached Comply with CRI 104, Section 10.4, “Pre- 1. Install tack strip with adhesive, drill and pin, or nailing, or combination, where required for adequate strength. 2. Locate Tack strip 1/4 inch from wall to conceal carpet edge between stripping and base of wall. Strip entire perimeter of each carpeted space and at obstructions and cutouts. 3. Tap down tackstrip pins in Guestrooms at Entrances, Bathroom, Closets, and Balconies. 4. Tred-Mor Pad Installation a. 5. 6. Refer to Scope of Work, and the Interior Design Drawings, for Tred-Mor pad locations. Tred-Mor padding will be installed using the stretch-in installation method listed above unless Tred-Mor Dubl-Stik is specified. Power stretch carpet uniformly in both directions the exact amount recommended by carpet manufacturer; trim edges, secure to stripping and conceal behind edge of stripping. a. Stretch-in installations must be power stretched uniformly length and width 1% to 1.5% using a power stretcher. b. When Graphic Action Back Carpet is specified, a uniform length and width power stretch of .75 % to 1% is acceptable. Use a carpet covered minimum 48 inch long 4 x 4 buffer block between power stretcher and wall to prevent damage to wall. Use a wall trimmer to trim carpet along walls and abutments. This Contractor shall be responsible for wall damage caused by installation Work. a. Trimmer must be adjusted to leave sufficient excess carpet to tuck into gullies. F. Stair Installation: Comply with CRI 104, Section 12, “Carpet on Stairs” G. Comply with carpet manufacturer’s written recommendations for seam locations and direction of carpet; maintain uniformity of carpet direction and lay of pile. At doorways, center seams under the door in closed position. 1. Level adjoining border edges H. Do not bridge building expansion joints with carpet. I. Cut and fit carpets to butt tightly to vertical surfaces, permanent fixtures, and built-in furniture including cabinets, pipes, outlets, edgings, thresholds, and nosings. Bind or seal cut edges as recommended by carpet manufacturer. 1. Check matching of carpet before cutting and ensure there is no visible variation between cut pieces. 2. Cut carpet, where required, in a manner to allow proper seam and pattern match. Ensure cuts are straight and true and unfrayed. ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 8 ▪ REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD FILE: 106756377 2013, Marriott International, Inc. J. Carpet shall extend to the back of all toe spaces, under all millwork, cabinetwork, convectors, bookshelving, and similar items to the limiting planes of the floor surface. Where carpet terminates at a doorway, termination of carpet shall occur under the edge of the closed door, or at the side of the threshold where this is required. Cut and fit carpeting to all obstructions protruding from the floor surface, such as columns, pipes, thresholds, electrical, and telephone outlets, etc. All raw edges shall be sealed and securely and neatly tucked into place. K. Maintain reference markers, holes, and openings that are in place or marked for future cutting by repeating on finish flooring as marked on subfloor. Use nonpermanent, nonstaining marking device. L. Install pattern parallel to walls and borders. M. Carpet shall be installed by experienced carpet layers in an approved manner, using Marriott’s recommended adhesive and procedures, as approved by carpet manufacturer. Install carpet with pile running in the same direction, unless specifically directed to do otherwise. N. Install carpet cushion seams at 90-degree angle with carpet seams. O. The final carpet pattern, layout, edge binding locations shall be as directed and approved by Owner's Representative. All associated installation shall be by this Contractor. 3.05 INSTALLATION - TRED-MOR DUBL-STIK A. Glue-Down Cushion - Pressure Sensitive Adhesive: 1. After all floor preparation is completed, the layout of the cushion should be planned. Cushion should be installed in longest lengths possible with consideration for traffic patterns and seam placement. Cushions seams should not be directly under carpet seams and generally should be at right angles to them. When this is not possible, shift cushion or carpet so that cushion seams are at least 6" to one side of carpet seams. After completing the cutting and fitting, begin gluing. Fold back the cushion and begin applying the adhesive to the floor. Refer to adhesive manufacturer's instructions for trowel size. Coat the floor with a continuous thin film of adhesive. A thick film will not be permitted. The optimum time to install cushion onto the adhesive is after the adhesive has become tacky dry. Do not lay the cushion into wet pressure sensitive adhesive. 2. Gluing Cushion to Floor: a. 3. Pressure Sensitive Adhesive: For most installations, a 1/32" x 1/32" x 1/32" trowel size will be sufficient. However, if floor is very porous (rough concrete, particle board, plywood, etc.), a larger trowel notch may be required. Some pressure sensitive adhesives can be applied more quickly to smooth subfloors by using a short nap paint roller. Comply with the adhesive manufacturer's instructions covering the specific adhesive. After adhesive application has been completed, place the cushion onto the adhesive and adjust where necessary to ensure there are no gaps at seams and whether full contact is made with adhesive. Smooth out air bubbles with a 2' piece of carpet core or the bottom of a tool box shelf. Glue Down Carpet to Cushion: a. Multipurpose - Carpet Adhesive - Premium Quality: For use between the cushion and tufted carpets with a secondary back or woven carpets, only a quality Brand Premium Adhesive should be used. Conform to manufactures recommendations and spread with a properly selected notched trowel. Maintain proper notch size throughout the installation. b. Laying Out Carpet and Installing: Follow industry accepted methods for a glue-down installation. All carpet should be spread in the room 24 hours prior to actual installation with room temperature between 65 degrees and 95 degrees F. Open ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 9 ▪ FILE: 106756377 2013, Marriott International, Inc. REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD carpet and spread it out over cushion. Roughly locate the carpet three to four inches longer than the area measurement. Align all breadths in their proper positions and trim the seams. All seam edges must be trimmed using the appropriate seam cutting tools, according to the carpet manufacturer's recommendations, before spreading the adhesives. Do not double cut carpet seams where cutting tool will penetrate the cushion; this can weaken the finished seam. Select the appropriate adhesive and trowel notching, as recommended for the coarseness of the carpet backing. On tufted carpets with a secondary back and on woven carpets, the trowel notch shall be large enough for the adhesive to make good contact with the recessed areas of the backing. Very coarse textured backings, rough porous concrete surfaces, or other unusual conditions, can require a trowel with deeper notches as recommended by the adhesive manufacturer. Lack of adhesion caused either by a lower quality adhesive or wrong trowel selection is the number one cause of installation failure. c. The adhesive is to be spread uniformly over the cushion with selected trowel. After sufficient open time, the carpet should be pressed down into the adhesive using a 2foot section of carpet tube or a stiff bristlebroom (not nylon), or a roller weighing no more than 35 pounds. d. The following types of carpet can be glued down to cushion: woven wilton, woven axminster, tufted with secondary backing of jute or synthetic, tufted carpet with no secondary backing (unitary backing), tufted carpet with thermo-plastic (hot melt) application of secondary backing of jute or polypropylene, or cushion-bonded. e. Floor preparation and testing, as well as cutting, fitting and laying of cushion and carpet are essentially the same for all types. However, the type of adhesive and the depth of the notches in the trowel (which controls the amount of adhesive being applied) depends on whether you are installing cushion or the carpet and on what type floor and carpet backing. Refer to carpet manufacturer or adhesive manufacturer's instructions for recommendations. 3.06 SEALING CUT EDGES A. To prevent fraying and raveling at all seams and transition areas, a continuous bead of seam adhesive must be applied to the first edge where the face yarn enters the backing. B. On woven carpet, all cut edges at seams and transition areas must be secured with a latex seam adhesive immediately following the seam trimming. 3.07 SEAMING A. Install pad and carpet seams in accordance with manufacturer's published instructions. B. Locate pad seams at right angles to carpet seams. Where not possible to locate at right angles, locate pad seam minimum 6 inches away from carpet seams. Butt pad edges tightly together to form seams without gaps. Tape pad seams. C. Maintain uniformity of carpet direction and lay of pile. At doors, center seams under doors; do not place seams in traffic direction at doorways. D. Orcon Super 3S Wide tape will be used on all public area seams specifying hot melt tape. E. The seaming iron with heat shield must be of proper size, matching the hot melt tape being used. F. The proper head setting and exposure time must be used to assure proper transfer without creating damage to backing or pile yarn. G. Orcon Super 3S tape will be used in Guest Rooms and suites where seams are specified. ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 10 ▪ REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD FILE: 106756377 2013, Marriott International, Inc. H. Cutting and Seaming Plan: 1. I. Guest Room and Suites: Refer to the Interior Design Drawings seaming layouts. a. If the Marriott Regional Warehouse is used, the carpet will arrive pre-cut and labeled. b. Public Areas: Refer to the Interior Design Drawings seaming layouts and the carpet suppliers seaming layouts. c. If the Marriott Regional Warehouse is used, the Public Area carpet will arrive in full uncut rolls. Where conflicts between Owner’s requirements and manufacturer’s requirements occur, use Owner’s requirements. 3.08 ACCESSORIES A. Provide carpet edge guard where edge of carpet is exposed; anchor guards to substrate. Edge guard shall be used in all doorways or openings where no sill is installed or as required. B. Stair Nosing: Coordinate with installation of carpet so that edge of the carpet is installed under edge of nosing or otherwise protected from unraveling. C. Base (in corridors): Carpet Base, to match adjacent floor. 1. Install carpet base prior to installing carpet, aligned straight and level. Neatly fit against floor carpet. 2. Fix the carpet base to walls using a manufacturer approved adhesive. Mechanically attach the base to the wall at the bottom edge of surging when required. Staples shall not be permitted. 3.09 ADJUSTING A. Stretch-In Installation: Restretch carpet sixty days after Substantial Completion, as directed by Owner. 3.10 CLEANING AND PROTECTION A. Comply with CRI 104, Section 15, “Protection of Indoor Installation”. B. Remove and dispose of debris and unusable scraps daily. C. Vacuum carpet daily using commercial machine with face-beater element. Remove spots and replace carpet where spots cannot be removed. Remove any protruding face yarn using sharp scissors. Knock down tacks at entries to baths and guest rooms (to protect feet). D. Maintenance Materials: Deliver specified overrun (if any) and usable scraps of carpet to Owner's designated storage space, properly packaged (paper wrapped) and identified. Usable scraps are defined to include roll ends of less than 9'-0" length, and 3'-0" wide. Dispose of smaller pieces as "construction waste". E. Protect carpet against damage from construction operations and placement of equipment and fixtures during the remainder of construction period. Use protection methods indicated or recommended in writing by carpet manufacturer. ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 11 ▪ FILE: 106756377 2013, Marriott International, Inc. REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD NOTE: TO BE USED FOR ALL BRANDS END OF SECTION ▪ SECTION 09 68 00 (09680) - CARPETING ▪ ▪ PAGE 12 ▪ REVISED: 05/01/13 CFRST SPECMSTR-NEW BUILD FILE: 106756377 2013, Marriott International, Inc.