f06B - sPECIFICATION GUIDE 09 62 29 - CORK FLOORING
F06B-1 General
F06B-2 Products
F06B-3 Execution
F06B-2 Products
F06B-3 Execution
SPEC NOTES
|
1 • GENERAL
1.1 Description:
|
SPEC NOTES:
|
.1 Section Includes: All labour, materials, equipment and services to supply and install cork flooring to areas noted on the drawings and as specified herein.
.2 The work shall also include: |
SPEC NOTES:
|
.a review and acceptance of conditions and surfaces.
.b job site coordination and cooperation. .c [underlayment panels.] .d [vapour retarder barrier] .e [acoustical / isolation underlayment]. .f adhesives. .g [wood base (and quarter round if required)] [resilient base]. .h associated mouldings, trim and accessories such transitions to other flooring materials [and thresholds at entries refer to 1.1.3.d below]. .i [factory] [site] applied finishes as noted herein. .j clean up. |
.3 The following shall be supplied by others:
|
.a acceptable substrate surfaces.
.b testing for moisture and alkalinity unless otherwise noted herein. .c threshold at entries in accordance with the requirements of Section 08 70 00. .d removal and disposal of existing floor covering materials including adhesive. |
SPEC NOTE: Use the following (items .4 and .5) only as required. Clauses may be revised to suit specification and/or form of Contract requirements as required
|
.4 This Section along with the drawings forms part of the Contract and is to be read, interpreted and coordinated with all other parts.
.5 Division 00 - Procurement and Contracting Requirements and Division 01 - General Requirements form an integral part of this Section of Work. .6 Related Work Specified Elsewhere:Related work includes but is not necessarily limited to the following: |
SPEC NOTE: This lists work directly related to this section but not to be included as part of this section. Delete, revise, or add to example sections listed below as required. This is not a comprehensive list. Refer to CSC MasterFormat 2004 for additional Sections that may be related and amend as required. Coordinate items with other Sections of Work in the Project Manual.
|
Section 02 40 00 Demolition / Alterations (removal / disposal of existing floor finishes)
Section 02 42 10 Existing Flooring Removal (for flooring only) Section 02 82 00 Facility Remediation (hazardous material removal) Section 03 30 00 Cast-in-Place Concrete (substrates including topping and finishes) Section 03 54 15 Cementitious Underlayment (for levelling) Section 06 10 00 Rough Carpentry (subfloor framing and sheathing) Section 06 20 00 Finish Carpentry (panel underlayment) Section 06 40 00 Architectural Woodwork (wood bases, stair posts and railings) [if supplied separately by others] Section 07 92 00 Caulking and Sealants Section 07 95 00 Expansion Joints (systems for floors) Section 09 30 00 Tiling (transitions to cork flooring) Section 09 62 19 Laminate Flooring (transitions to cork flooring) Section 09 62 23 Bamboo Flooring(transitions to cork flooring) Section 09 64 00 Hardwood Flooring (wood bases and transitions to cork flooring) Section 09 65 00 Resilient Flooring (bases and transitions to cork flooring) Section 09 68 00 Carpet Flooring (transitions to cork flooring) Section 09 68 00 Carpet Flooring (transitions to cork flooring) Division 23 Heating, Ventilation, and Air Conditioning (floor grilles, etc.) |
1.2 Reference Standards
|
.1 The latest editionof the Floor Covering Reference Manual issued by the National Floor Covering Association of Canada (NFCA) shall govern all materials and workmanship. Whenever reference is made within this specification to NFCA requirements it shall mean, as a minimum, those standards and requirements noted in the NFCA Reference Manual.
.2 The latest applicable editionof the following reference standards shall also govern all materials and installation work specified herein as applicable: |
SPEC NOTE: Select appropriate standards and delete all others
|
ASTM WK10811, Standard Specification for Cork Tile Flooring.
EN 655, Resilient floor coverings - Tiles of agglomerated composition cork with polyvinyl chloride wear layer. Specification. EN 672, Resilient floor coverings - Determination of apparent density of agglomerated cork. EN 688, Resilient floor coverings - Specification for corklinoleum. EN 12104, Resilient floor coverings - Cork floor tiles - Specification. EN 12105, Resilient floor coverings - Determination of moisture content of agglomerated composition cork. CAN/ULC-S102.2, Standard Method of Test for Surface Burning Characteristics of Flooring, Floor Covering and Miscellaneous Materials and Assemblies. Workplace Hazardous Materials Information System (WHMIS). |
1.3 Quality Assurance:
|
.1 All preparation, materials, and workmanship shall be in strict accordance with NFCA requirements and material manufacturer's written recommendations and detail requirements for conditions of work that apply and guarantee / warranty periods noted herein.
.2 Any preparation, materials, and workmanship that does not meet NFCA requirements shall be repaired or replaced in accordance with Quality Assurance requirements at no additional cost to the Owner. .3 The flooring contractor shall be recommended by the manufacturer / supplier as qualified to install cork flooring materials and must have a minimum of three (3) years local experience and have successfully completed a minimum of five (5) projects using the same or similar materials and quantities and complexity as this project. If requested provide a list of flooring projects completed within the last 5 years. .4 The flooring contractor shall maintain a crew of experienced installers throughout the duration of work to satisfy the contract / work schedule requirements. SPEC NOTE: Use the following clause on large commercial / institutional projects and where the Quality Assurance Program is used. .5 Only persons who are Trade Qualified or Product Qualified in accordance with Part A05 requirements shall be engaged in the installation of cork flooring. Include the following if the project is under union jurisdiction [Apprentices may be employed provided they work at all times under the direct supervision of a Trade Qualified person. The ratio of apprentices to journey persons employed on site must not exceed the ratio outlined by local trade regulations.] SPEC NOTE: Use the following (1.4) where the Quality Assurance Program is available from the Provincial Flooring Covering Association or other designated Quality Assurance provider in the area of this work. Refer to Part A04. |
1.4 Inspection Requirements
|
.1 All flooring work shall be reviewed in strict accordance with NFCA Quality Assurance (QA) Program requirements by a qualified (i.e. Quality Assurance Program accredited) Inspection Agency assigned by the Provincial Floor Covering Trade Association. Only Inspectors who have been approved under the Quality Assurance Program shall be assigned.
.2 The appointed QA inspector shall notify the flooring contactor and [Contractor] [Owner] in writing of any substrate defects and potential problems that may affect installation of materials prior to commencement of work. .3 Fully cooperate with the QA inspector at all times in the performance of his/her duties when inspecting on-site areas and substrate surfaces scheduled to receive cork flooring. .4 The cost of inspections including the QA Maintenance Bond shall be included in the cost for this work. |
1.5 Testing Requirements
|
SPEC NOTES:
|
.1 Moisture and alkalinity tests shall be conducted by an independent third party testing agency using testing methods and devices in accordance with NFCA requirements and the floor covering manufacturer’s recommendations.
.2 It shall be the responsibility of the Contractor to provide and pay for such testing in a timely manner. .3 The final test results must be in compliance with NFCA requirements and the cork flooring and adhesive manufacturer’s recommendations, and unless otherwise permitted by the material manufacturers [and approved by the NFCA Quality Assurance Inspector]: .a vapour emissions shall not exceed a rating of 3lbs./ 1000 ft2 over a twenty-four (24) hour period. .b alkalinity results shall not exceed a maximum pH rating of 7. .4 Do not install flooring materials until testing results indicate that all substrate surfaces are properly cured and acceptable for installation of flooring materials. Report any unsatisfactory conditions in writing to the Contractor. |
1.6 Environmental and Safety Requirements
|
.1 Ensure that all materials, including adhesives and other accessory products, are environmentally safe and are not prohibited by any applicable laws, regulations, bylaws, ordinances or orders of any government authority.
.2 Ensure that all employees are fully informed and comply, at all times with Workplace Hazardous Material Information System (WHMIS) requirements. Such compliance shall include but not be limited to: .a Training of staff in the proper handling and storage of such materials. .b Furnishing and use of workplace Material Safety Data Sheets (MSDS) and labels for such materials. .3 Environmental sustainability and recycling of cork flooring materials: .a Cork flooring materials used shall be from a local distribution source. .b Installations shall use low VOC adhesives and materials. |
1.7 Pre-Installation Site Meeting
|
.1 Before commencement of work on site, the [General Contractor,] [Construction Manager,] flooring Subcontractor, flooring manufacturer's representative and the [Consultant] [Owner] shall meet to discuss the following items:
|
.a Where applicable, removal and disposal of existing floor covering and adhesive materials.
.b Review of substrate requirements and conditions including finish and level tolerances. .c Substrate testing for moisture and alkalinity and provision of written results. .d Confirmation of all flooring materials and miscellaneous related materials to be used. .e Scheduling of all flooring work, including material deliveries, handling, storage, conditioning, and staging of work. .f Installation requirements, including heating and ventilation, condition and preparation of acceptable substrates and protection of completed work. .g Review of details, including, but not limited to base and corners, and interface with adjacent materials. .h Floor pattern and finishing requirements. .i Inspection procedures and reports. .j Provision of maintenance materials and data requirements for cleaning, treatment and maintenance for each type of flooring installed. |
1.8 Mock‑Up: (use for large projects or for complicated layouts
|
.1 Prior to installation, install a sample of each type of cork flooring on site to area(s) or room(s) designated by the Contractor in accordance with site meeting requirements to show selected materials, colour schemes, pattern / texture, direction of lay, finish fit to walls and doorways, seam finish, and any other requirements that apply as well as workmanship.
.2 Following completion, the installation is to be reviewed by the Contractor, flooring contactor, flooring manufacturer's factory / distributor representative and Consultant. If accepted, the mock-up sample / room(s) shall serve as the “Standard”of workmanship and materials for all other such work. Do not proceed with balance of installation until such approval has been given. |
1.9 Product Delivery, Handling, and Storage
|
.1 Deliver cork flooringand other materials (e.g. adhesives, accessories, etc.)in original labelled and unopened containers with material information clearly marked on each containerand a minimum of 24 hours before installation to condition materials to site temperature and humidity conditions.
.2 Handle and protect materials during transportation, storage, and installation by means and methods recommended by manufacturers and in accordance with minimum NFCA requirements so as to prevent damage, breakage, staining or other disfigurement. .3 Store all materials in strict accordance with manufacturers written requirements in a secure dry space on site at locations [designated by the Contractor] [pre-approved by the Owner]. SPEC NOTE: Sufficient secure, dry, and heated storage space to store floor covering materials, tools and equipment necessary for installation shall be provided by the Contractor or Owner |
1.10 Installation Requirements
|
.1 Work under this Section shall be limited to that indicated under the scope of work of this trade including the correction and filling of minor imperfections and irregularities with a non-shrinking latex-based patching / levelling compound and sanding it smooth.
.2 It shall be the responsibility of the Contractor to provide conditions acceptable for the installation of cork flooring materials. This shall include the provision of floor levels, finish tolerances, and conditions in accordance with manufacturer’s recommendations and minimum requirements of NFCA Part A10 - Acceptable Conditionsincluding the following: |
.a Substrate surfaces within flatness and level tolerances noted in Part A10 - Acceptable Conditions based on using [straightedge] [F-number] values. Where these values are exceeded the substrate surface shall be rectified by the Contractor using a self-levelling cementitious topping before work of this section proceeds.
|
SPEC NOTE: Refer to the following table for flatness and level tolerances for concrete as well as wood substrates. Note for suspended concrete slabs use FFvalue only if F-Number levelness system is used
|
SPEC NOTE: To ensure the above noted requirement is achieved the level tolerance must be included in the concrete specification and/or a separate cementitious topping specification must be included. Refer to Part A10 - Acceptable Conditions, Part F04B - Installation Guide, and Part AA1 - Cementitious Underlayment Guide Specification for information
|
.b Concrete substrates machine trowelled to a smooth level surface that are free of all marks, imperfections or conditions that will damage installed flooring materials.
.c Grinding or sanding of ridges, undulations, projections and areas of carbonation and scaling and filling and levelling of expansion joints, cracks, grooves and other irregularities. .d Clean, dry substrate surfaces free of contaminants detrimental to flooring installation (e.g. felt pen marking, paint, varnish, oils, release agents, waxes, sealers and curing and hardening compounds not compatible with adhesives employed if flooring is glued down). Surfaces shall be broom cleaned. .e Environmental conditions prior to and immediately after flooring installation meeting the following criteria. |
.i heating, air conditioning and humidity control facilities in operation.
.ii substrate moisture content and alkalinity level within manufacturer’s requirements. New concrete and suspect existing concrete surfaces shall be tested in accordance with NFCA requirements by an independent testing agency in a timely manner arranged by the Contractor with costs paid for by the Owner. .iii environment and substrate temperatures within manufacturer’s requirements. This includes that the temperature of all materials to be installed and areas to receive flooring is maintained at a minimum of 18oC (65oF) and maximum of 30oC (85oF) for at least 48 hours prior to, during, and after installation, and that a minimum temperature of 13oC (55oF) is maintained thereafter. .iv humidity range within manufacturer’s requirements and as a minimum between 35% and 50% assuming an 18oC to 25oC temperature. If humidity is not within this range, postpone installation until conditions are suitable. .v areas to receive flooring shall be vented 24 to 48 hours prior to installation using fresh circulating air and adequate ventilation (for noxious fumes) shall be provided in accordance with WHMIS and WCB requirements. .vi areas to receive flooring shall be provided with adequate illumination (minimum of 538 lux at floor level) in accordance with WCB requirements. |
Where these minimum requirements are not met they shall be rectified by the Contractor before work of this section proceeds
|
.3 The final type and condition of each substrate shall be in complete accordance with NFCA requirements and cork flooring material manufacturer=s installation recommendations.
.4 Condition cork flooring within area of installation and all other flooring materials including adhesivesfor a minimum of three (3) daysto avoid potential expansion, contraction, and bonding problems. .5 Consult with and coordinate flooring work and make provisions for all trades in advanceto avoid future repairs. Refer to other flooring Sections for interface details and base type where applicable. .6 Install flooring materials only after all other trade work, especially gypsum board and painting, has been completed and all overhead mechanical and lighting work, and other wall-mounted equipment has been installed. .7 DO NOT proceed with installation until all unsatisfactory conditions have been corrected. Notify the Contractor in writing of all defects likely to impair finished work. Start of work implies acceptance of surfaces and conditions. .8 Restrict traffic by trades and others until work is completed and until adhesives and site finishes have fully cured. |
1.11 Submittals:
|
.1 All submittals shall be in accordance with the requirements of Section 01 30 00.
.2 Submit manufacturer's product literature, technical data, specifications, and installation instructions for each type of cork flooring and full range of cork flooring patterns / colours available with sample set for review / selection and pre-approval. .3 Submit duplicate clearly labelled samples of each type of cork flooring material and colour selected. .4 At project completion provide maintenance data and materials for each type of cork flooring and finish used for incorporation into Owner's maintenance manual. .5 At project completion, provide two percent (2%) of total area or minimum five (5) square metres (fifty-five (55) square feet) from same production run of each type of cork flooring installed for Owners later use in maintenance. |
1.12 Maintenance Data and Materials
|
.1 At project completion of work provide flooring manufacturer’s maintenance, cleaning, and care data for each type of cork flooring installed for incorporation into [each unit] Owner's maintenance manual.
.2 At project completion, provide extra materials from same production run of products installed, packaged with protective covering, and labelled describing contents for Owner’s later use in maintenance in following amounts: |
.a one percent (1%) of total amount of each type, pattern, and colour of cork flooring installed.
.b minimum 12 lineal feet of each type, profile, and colour of base installed. |
1.13 Maintenance Bond
|
.1 Furnish a NFCA Quality Assurance two (2) year 100% Maintenance Bond on completion of work. The Maintenance Bond shall warrant that the work has been performed in accordance with applicable requirements of the NFCA Quality Assurance Program. The cost of this Maintenance Bond shall be included in this Bid.
.2 Provide a facsimile of the Maintenance Bond together with written proof of ability to furnish same at no cost to the Owner with Bid. |
1.14 Guarantee:
|
.1 Provide manufacturers written one-year warranty from date of Substantial Performance against any delamination or separation as a result of a manufacturing defect when installed and maintained in accordance with manufacturer's installation instructions
|
2 • PRODUCTS
2.1 General:
|
.1 All work shall be based on the use of specified materials. Other floor covering and accessory materials may be approved by the Consultant only before Bid Closingproviding they meet or exceed the requirements specified herein. Refer to submittal requirements. No other products will be accepted after Bid Closing.
.2 Type and finish of cork flooring shall be as selected by the Consultant from manufacturer=s complete range as indicated on Finish Schedules and as noted below. |
2.2 Installation Materials
|
.1 Flooring Underlayment: moisture resistant minimum 6 mm (1/4") thick panel underlayment for wood substrates of type recommended or approved by cork flooring manufacturer.
.2 Substrate Filler: smooth trowelling, fast setting, non-shrinking, non-cracking, pre‑mixed filler with Portland cement and polymeric modifiers (white latex) and a minimum compressive strength of [20 MPa (2900 psi)][27.6 MPa (4000 psi)] at 28 days for patching / filling / levelling substrates, type(s) to suit substrate conditions as recommended by adhesive / cork flooring manufacturer. .3 Substrate Primers and Sealers: as recommended by cork flooring manufacturer. .4 Moisture Retarder Membrane: (for engineered cork floating floor installations over concrete without underlayment) to CAN/CGSB‑51.34‑M86, 0.15 mm (6 mil) thick polyethylene film to full length of slab area x maximum standard width to reduce joints with membrane tape. .5 Moisture Barrier Tape: as recommended by moisture barrier manufacturer. .6 Sheathing Paper: (for engineered cork floating floor installations over wood substrates) to NFCA requirements, wax vapour barrier type. .7 Acoustical / Isolation Underlayment: (for engineered cork floor installations) moisture resistant sheet material of type, density, and permeability as recommended or approved by cork flooring manufacturer. .a Cork Underlayment: 1200 mm (48”) wide x [4 mm (3/16”)] [5 mm (5/16")] thick agglomerated cork sheet. .b [insert other underlayment type as recommended by flooring manufacturer] .8 Adhesive: [premium][standard] high-strength grade, [low VOC (solvent-free)], alkaline and water resistant type specially formulated for glue‑down application of cork flooring with type to suit substrate and condition as recommended by both adhesive and cork flooring manufacturers. Spread rates for adhesive shall be strictly adhered to. .9 Fasteners: (for mechanically fastened installations only) non-corrosive purpose made nails, staples and machine driven fasteners of types and sizes to suit application requirements as recommended by cork flooring manufacturer. .10 Expansion Joint Strips: cork or other resilient material for installation in voids at perimeter of engineered cork flooring with width to suit void. |
2.2 Flooring
|
.1 Cork Tile Flooring: [300 mm (12")][600 mm (24”)] square] [300 x 600 mm (12”x 24”)] [600 x 900 mm (24” x 36”)] x [4 mm (3/16”)] [5 mm (5/16")] thick [massive agglomerated cork tile] [agglomerated cork veneer tile with composition cork base] to ASTM WK10811and EN 12104with [square][bevelled] edges and [factory] [site] sealed finish with pattern and colour as selected by [Consultant] [Owner] form manufacturers [standard][custom range] to match pre-approved sample.
.2 Cork Plank Flooring: [300 mm (12”) wide x 900 mm (36”) long x 11 mm (7/16”)tongue and groove three-ply laminated[square][bevelled] edgeplanks to ASTM WK10811and EN 12104with a 100% granulated cork acoustical underlayment layer on the bottom, a HDF (High Density Fiberboard) water-resistant core layer, and a top wear surface of granulated cork particleswith [factory] [site] applied sealed finish, with pattern and colour as selected by [Consultant] [Owner] form manufacturers [standard][custom range] to match pre-approved sample |
2.3 Finish
|
.1 Cork flooring shall be [factory finished] [unfinished ready for site finishing] using following finish:
|
.a Colour: [natural][standard ][custom] factory applied ( insert stain type and colour) stain] colour in accordance with manufacturers requirements with colour as selected by Consultant to match pre-approved sample.
|
SPEC NOTE Where different cork floor finishes are used on the same project, define each in specification and differentiate on drawings and Finish Schedule by number / name using following example
|
|
.b Sealer / Finish: [gloss] [semi‑gloss] [matte] [clear [urethane][UV cured acrylic vinyl] [curable oil] finish to manufacturers requirements and as pre‑approved by Consultant to match pre-approved sample.
.c Wax Finish: site applied finish. |
2.4 Accessories and Trims
|
.1 Base: [63.5 mm (2 1/2")] [89 mm (3 1/2")] high [rubber][vinyl] base.
|
OR Use the following to cover expansion void at walls where appropriate
|
.1 Mouldings and Trim: wood, [primed finger jointed] [stain grade clear Fir or other species as selected by the Consultant].
|
.a Base: 19 mm (3/4") x [63.5 mm (2 1/2")] [89 mm (3 1/2")] high.
.b Quarter Round: 19 mm (3/4"). |
.2 Protective Edgings / Reducer Strips: [hardwood of species and grade matching flooring, [factory sanded ready for site finishing] [pre-finished to match pre-finished flooring]. [extruded [bronze] [aluminum with [mill] [anodized] finish and plain surface, full widths and lengths as required.] with profiles to suit conditions and tapered as required.
.3 Thresholds: [Oak, factory sanded ready for site finishing] [pre-finished to match pre-finished flooring] [extruded [bronze] [aluminum with [mill] [anodized] finish and plain surface], minimum [50 mm (2") wide x lengths required with flat / barrier free accessible profile for interior entrance doors where required. |
3 • EXECUTION
3.1 Preparation
|
.1 Review all conditions to ensure substrate conditions and levels, environmental conditions and work by other trades is acceptable prior to commencing work including moisture content.
.2 Ensure concrete is tested for moisture (and alkalinity if required and that alkalinity is neutralized) in accordance with NFPA recommendations. .3 Ensure plywood subfloor installation meets minimum NFCA requirements. .4 Check substrate levels with a metal straight edge and ensure that they are free from all bumps, ridges, and other imperfections detrimental to flooring installation. .5 Remove paint, varnish, oils, release agents, waxes, sealers and curing and hardening compounds not compatible with adhesives employed. .6 Fill substrate low spots, minor cracks, joints and holes with substrate filler to the extent required by scope of work and ensure substrates are free from all bumps, ridges and other imperfections. Feather filler as required to allow for differences in adjacent floor materials. Sand smooth to eliminate all irregularities, bumps, ridges and other imperfections and vacuum clean to provide a surface suitable for bamboo flooring. .7 Seal and prime substrate surfaces if recommended by flooring adhesive manufacturer's recommendations. |
3.2 Installation of Adhesive:
|
.1 Mix and apply adhesives for flooring in strict accordance with manufacturer's written instructions, observing recommended trowel notching, spread rates, open times and safety precautions.
.2 Apply adhesive over subfloor in accordance with manufacturer's instructions. .3 Apply no more adhesive than can be covered with flooring before working time expires. .4 Allow no streaks or lumps in adhesive during application. .5 Remove adhesive that has set or that has formed surface film before flooring is embedded. Apply fresh coat of adhesive. |
3.3 Installation of Flooring
|
.1 Install all cork flooring and accessories using tools, materials, methods and sequence of work as recommended by flooring system / manufacturer and to minimum NFCA requirements.
.2 Install cork flooring to areas and patterns detailed and/or shown on drawings and/or approved shop drawings, and unless otherwise noted install flooring so fields and patterns are developed from centre axis of area covered. Locate centre axis so that no flooring unit is less than one-half size. .3 Lay cork flooring planks long way of room [and corridor], continuous through doorways and cut to fit all projections with joints straight, true to plane and with minimum half width of plank at perimeters and with variations in shade or pattern disbursed. .4 Maintain tight joints between tiles and planks. .5 Install flooring units with uniform pressure but avoid working adhesive into joints. .6 As installation progresses [and after installation] roll flooring with roller to ensure full adhesion. .7 Remove excess adhesive from flooring units. .8 Provide expansion void at perimeter (walls and adjacent floor finishes and at openings as required) of floor system to widths in accordance with cork flooring manufacturer=s recommendations and to minimum NFCA requirements using temporary blocking if and as required. |
3.4 Installation of Bases and Trims
|
.1 Install wood base (and quarter round if required) over expansion void at perimeter of cork flooring secured to walls using appropriate fasteners (e.g. finishing nails) in accordance with NFCA requirements. Ensure base does not contact floor surface and is not secured to it.
.2 Install perimeter mouldings continuous at floor perimeter. Nail to floor with 25 mm finishing nails spaced 300 mm (12") o.c. .3 Install protective edgings / reducer strips and hardwood thresholds at all exposed cork flooring edges and interfaces with other flooring materials as required to suit conditions, fixed as recommended by the manufacturer and to NFCA requirements. Where wood material is used drill mouldings, set nails, and fill holes with colour matched filler. Double nail at joints. .4 Install thresholds at openings and where indicated and attached to adjacent rigid floor surface. Thresholds to act as ramp between floor surfaces over expansion space. |
3.5 Site Finishing
|
SPEC NOTE: Use the following where cork flooring is to be site finished.
|
.1 Site finish cork flooring only after it has been installed and is in place for at least seven (7) days with building temperature and relative humidity and moisture content of flooring maintained within installation parameters before commencing finishing operations.
.2 Vacuum clean and carry out final preparation of flooring in accordance with minimum NFCA requirements for type of flooring for areas which may contain glue, marks, dirt or other contaminants detrimental to finishing. .3 Apply specified sealer and/or finish coats to cork flooring using method and application rate and number of coats in strict accordance with manufacturer=s written recommendations to achieve [matte / satin] [semi‑gloss] [gloss] finish to match pre-approved sample. .4 Buff / polish flooring after each application of sealer coat and/or finish coat in strict accordance with sealer / finish manufacturer's recommendations. |
3.6 Protection
|
.1 Avoid static loads on newly installed flooring until adhesives have thoroughly set.
.2 Prohibit traffic over installed flooring until site-finish coats have dried and cured (for a minimum period of seven (7) days unless otherwise specified by coating manufacturer.). .3 The overall responsibility for the protection of completed flooring to acceptance by the Owner shall be the responsibility of the General Contractor who shall reasonably prohibit all other work and traffic over flooring and provide a temporary breathable protective covering acceptable to the manufacturer. Do not use non-breathable sheet or film covering that could cause condensation to form. .4 Subsequently remove protective covering and dispose of same and make good defects to flooring installation caused by other trades. |
END OF SECTION