mmetroflor 7820AB-CM 100 Waterproof Floating Luxury Vinyl Floor Installation Guide

7820AB-CM 100 Waterproof Floating Luxury Vinyl Floor

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Specifications

• Product Name: METROSTONE Waterproof SPC by METROFLOR

• Product Type: Floating Luxury Vinyl Floor

• Waterproof: Yes

• Integrated Underlayment Pad: Yes

• Substrate Flatness Tolerances: 3/16″ (4.76mm) in a 10′ (3.05m)
  radius

• Vapor Barrier Requirement: Not required

• Acclimation Period: Minimum of 48 hours

• Transition Requirements: Reducer, T-molding, end-cap, or
  stair-nosing for different flooring-coverings

• Perimeter Expansion Requirements: 1/4″ (6.35mm) at perimeter
  walls and vertical obstructions

• Radiant Heat Compatibility: Approved

Product Usage Instructions

Pre-Installation Essentials

Your job will be smooth, fast, and easy when you follow these
essentials every time you install METROSTONE:

• EVALUATE THE PREMISES: Conduct a proper inspection of both
  exterior and interior areas.

• Moisture Concerns: Address and correct any moisture issues
  before installation to prevent mold and mildew growth.

Installation Considerations

Substrate Flatness Tolerances: Ensure the
substrate is flat within specified tolerances.

Vapor Barrier: Not required; do not use a vapor
barrier.

Underlayment Pad: An additional underlayment
pad is not needed as METROSTONE comes with an integrated pad.

Acclimation: Allow a minimum of 48 hours for
acclimation before installation.

Transition Requirements: Use appropriate
transition pieces when moving between different flooring
materials.

Installation Over Existing Ceramic Tile Floor

If installing over existing ceramic tile, ensure compliance with
substrate flatness tolerances. Grout joints filling may or may not
be required based on the existing floor condition.

Bonded Installation

Substrate RH/MVER: Ensure substrate RH/MVER
levels are within approved limits for bonded installation.

Radiant Heat & Perimeter Expansion

Radiant Heat: Approved for use with radiant
heat systems.

Perimeter Expansion: Maintain the specified
expansion gap at perimeter walls and vertical obstructions.

Ambient Interior Conditions

Definition of Waterproof: METROSTONE maintains
its structural integrity even upon contact with moisture or
water.

FAQ

Q: Is a vapor barrier required for installation?

A: No, a vapor barrier is not required as METROSTONE does not
need one.

Q: How long should the acclimation period be?

A: A minimum of 48 hours is recommended for proper acclimation
before installation.

Q: What are the perimeter expansion requirements?

A: Maintain a 1/4″ (6.35mm) expansion at perimeter walls and
vertical obstructions to allow for proper expansion and contraction
of the flooring.

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METROSTONE
Waterproof SPC by METROFLORTM
Installation Manual
100% WATERPROOF FLOATING LUXURY VINYL FLOOR

Revised 12/06/2022 Note: This document supersedes all printed and electronic Installation and Technical Guides previously distributed for Metrostone.

100% Waterproof

METROSTONE
Waterproof SPC by METROFLORTM

KEY INSTALLATION CONSIDERATIONS

RESIDENTIAL

COMMERCIAL

Substrate Flatness Tolerances Is a Vapor Barrier required? Is Underlayment Pad Required Acclimation
Transition Requirements

3/16″ (4.76mm) in a 10′ (3.05m) radius without any abrupt height variations and sloped no more than 1″ (25.4mm) per 6′ (1.83m)
No – A vapor barrier, such as a 6 mil polyfilm, is not required and should not be used
No – Metrostone includes an integrated preattached pad. An additional underlayment pad is not required and should not be used.
Not Required*
The use of a reducer, T-molding, end-cap, or stair-nosing is required when transitioning between different flooring-coverings, at appropriate terminations, and other suitable circumstances.

3/16″ (4.76mm) in a 10′ (3.05 M) radius without any abrupt height variations and sloped no more than 1″ (25.4mm) per 6′ (1.83m)
No – A vapor barrier, such as a 6 mil polyfilm, is not required and should not be used
No – Metrostone includes an integrated preattached pad. An additional underlayment pad is not required and should not be used.
A minimum of 48 hours
General: See “Residental” Requirements
Large Areas: Expanses greater than 100 ft. (30.48 M) in any direction will require a T-molding transition to divide the assembly into smaller sections.
Adjoining Areas: T-Molding is required to separate installations in adjoining spaces interconnected by a narrow opening, such as a doorway between rooms.

Installation Over Existing Ceramic Tile Floor

Filling grout joints not required ** Ensure compliance with substrate flatness tolerances

Filling grout joints required

Bonded Installation
Substrate RH/MVER
Radiant Heat 3-Season/Non-Climate Controlled Environments
Perimeter Expansion Requirements

Approved**

Not permitted

Not to exceed 85% RH or 8lbs MVER
Approved ­ Substrate surface temperature not to exceed 85° F
Not to Exceed 500 Sq.Ft. (46.45 Sq.m)**

Not to exceed 85% RH or 8lbs MVER
Approved ­ Substrate surface temperature not to exceed 85° F
Not permitted

1/4″ (6.35mm) expansion at perimeter walls and vertical obstructions **

3/8″ (9.5mm) expansion at perimeter walls and vertical obstructions

Ambient Interior Conditions
Definition of “Waterproof”

50°F ­ 100°F / 40% ­ 60% Atmospheric RH**
Structural integrity of Metrostone will not degrade due to contact with moisture/water***

50°F ­ 100°F / 40% ­ 60% Atmospheric RH
Structural integrity of Metrostone will not degrade due to contact with moisture/ water***

• Acclimation of Metrostone flooring should be considered a best work practice, but is generally not required in residential applications. Installation performed in extremely hot or cold conditions can cause the material to become too flexible or rigid, making the material difficult to install and potentially causing damage to the locking system. ** See Applications with Additional Specifications or Considerations section. ***While Metrostone is waterproof, it is not intended to manage moisture or for use as a moisture mitigation system. NOTICE: Metroflor Corporation does not warrant Metrostone when installed with customized or modified tile edges and/or locking profiles. This would include instances such as 45-degree mitered corners and serpentine edges. Please refer to the Metrostone warranty for complete warranty details and exclusions.
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METROSTONE
Waterproof SPC by METROFLORTM

PRE-INSTALLATION ESSENTIALS
Your job will be smooth, fast and easy when you follow the essentials every time you install Metrostone.

EVALUATE THE PREMISES
Exterior
A proper inspection should be completed, prior to installation, by a qualified individual to ensure:
·Driveways and landscaping surrounding the building direct water away from the foundation.
·Gutters, down spouts, and drains are free of blockage, allowing runoff to flow freely away from the foundation.
·Crawl spaces have cross-ventilation air vents equaling at least 1.5% per 100 Sq.Ft. (9.3 Sq.m) of floor space.
·Crawl space elevations should measure a minimum of 18″ (46cm) and should be insulated according to the latest building code requirements. The ground should be covered with a minimum 6-mil vapor barrier.
·Metrostone should not be installed in locations where the space beneath the building structure is openly exposed to the outside elements.
·All permanent exterior doors and windows have been properly installed.
Interior
·Metrostone is only intended for interior use.
·Examine the installation site for faulty plumbing, including leaks from water heaters, dishwashers, washing machines, or any other water-bearing fixtures or pipes.
·Metrostone is waterproof, but it is not a substitute for proper moisture management. Metrostone cannot inhibit the growth of mold or prevent structural problems associated with, or caused by flooding, excessive moisture, alkalis in the substrate, moisture vapor emissions, or conditions arising from hydrostatic pressure. Substrate moisture issues should be addressed and corrected prior to installation.
·Permanent HVAC system should be in full operation at least one week prior to installation. Room temperature should be maintained between 50°F and 100°F (10°C and 38°C) at least 48 hours before installation, during installation, and indefinitely thereafter.
·All other trades must complete their respective work before installing Metrostone.
ATTENTION: Mold and mildew grow only in the presence of moisture. Moisture issues on the project should be addressed and corrected prior to installation. Please visit www.epa.gov/mold for information about safely preventing and removing mold, mildew, and other biological pollutants.

EVALUATE AND QUALIFY YOUR SUBSTRATE
All substrates, regardless of composition, must be in strict compliance with the following guidelines:
Grade: Metrostone is suitable for above-grade, on-grade, and below-grade applications.
Floor Flatness: Substrates must be flat within 3/16″ (4.76mm) in a 10′ (3.05m) radius.
Floor Levelness: Substrates must not slope more than 1″ (25.4mm) per 6′ (1.83m) in any direction.
Smooth: Substrates shall be smooth and free of irregularities, roughness, excessive texture, or abrupt changes in elevation.
Dry: Substrates must be free of excess moisture. Concrete substrates must measure no more than 8lb MVER per 1,000 Sq.Ft. in 24 hours in accordance with ASTM F1869, or 85% RH when measured in accordance with ASTM F2170, with alkalinity levels between 7 and 10. Wood substrates must not exceed 14% when measured with an appropriate moisture meter.
Clean: Substrates must be free of any contaminants, bondbreakers, deleterious substances and other foreign materials that could reduce adhesion, impair performance, affect the rate of moisture dissipation from the substrate, or cause a discoloration of the flooring. This would include, but not limited to, dust, solvent, paint, wax, oil, grease, residual adhesive, adhesive remover, film-forming curing compound, silicate penetrating curing compound, dissipative curing compounds, sealing compound, hardening compound, parting compound, alkaline salts, excessive carbonation or laitance, mold, and mildew.
Structurally Sound: Structures must be free from flaw, deficiency, defect, decay, or deterioration and in compliance with all applicable building codes.
Free of Excessive Deflection: The maximum allowable deflection of the structure or substrate must not exceed L/360.
Concrete Substrates
General Conditions: All concrete floors, regardless of age or grade level must be properly cured and prepared in accordance with the most current version of ASTM F710 (Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring). Concrete substrates must have compression strength of 3,000 psi or greater. Below-grade and on-grade concrete substrates must have a suitable and uncompromised vapor retarder properly installed beneath the slab (ASTM E1745).
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METROSTONE
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Contaminant Removal: Non-chemical methods for removal, such as scraping, abrasive cleaning, grinding, bead or shot blasting, including methods described in ASTM D4259 (Standard Practice for Abrading Concrete), may be used on pre-existing slabs with deleterious residues or other contaminants. The use of adhesive removers or solvents (including soy and citrus type products) is strictly prohibited.
Moisture and Alkalinity: Moisture and alkalinity tests should be performed on all concrete substrates regardless of grade level or age of slab. Perform either ASTM F2170 In-Situ Relative Humidity (RH) test or ASTM F1869 Calcium Chloride Moisture Test. RH Test results should not exceed 85% relative humidity. The Calcium Chloride Test for moisture should measure no more than 8 lb per 1,000 Sq.Ft. in 24 hours Moisture Vapor Emission Rate (MVER). All moisture tests should be conducted prior to installation to ensure that moisture is at recommended levels. If test results exceed recommended tolerances for moisture, the area must be allowed to further dry to an acceptable level or remediated using a moisturemitigation system before installing Metrostone. Electronic meter testing is not a replacement for a Calcium Chloride Test or Relative Humidity Test. Perform pH tests per ASTM F710 to determine alkalinity of the slab, pH tests for alkalinity levels should register between 7 and 10. Rinsing and vacuuming with clean, potable water is the best way to lower surface pH, but it will not prevent future issues. Do not acid rinse concrete floors to neutralize pH. Some moisture- mitigation systems are designed to control pH. It is highly recommended that substrate moisture and pH testing be conducted by an International Concrete Repair Institute (ICRI) certified technician.
Moisture Mitigation: Concrete substrates that exceed the maximum moisture value must be brought into compliance prior to the installation of Metrostone. Due to the complexities associated with concrete moisture vapor emissions and movement of soluble salts in concrete substrates, Metroflor Corporation does not warrant a specific product. Metroflor Corporation does recommend the use of products that meet the criteria listed in ASTM F3010 (Standard Practice for Two-Component Resin Based Membrane-Forming Moisture Mitigation Systems for Use Under Resilient Floor Coverings.)
Radiant Heat Assemblies
Radiant heating systems must be cast a minimum of ½” (12.7mm) below the surface of the substrate and should be operating at least two weeks before installing Metrostone. 48 hours prior to installations, set the heating system temperature to 68°F (20°C). The temperature of the radiant heat floor may be increased gradually 72 hours after installation, but the surface temperature of the substrate should never exceed 85°F (29°C). Contact the manufacturer of your radiant heating system for further recommendations.
Plywood, OSB and Particleboard
Wood substrates must be A.P.A. approved with a minimum grade of “BB” or “CC” and be well fastened to the structure. All wood substrates must be checked for moisture. Even if

obvious signs are not present, the material should be tested using the appropriate moisture meter; moisture levels should not exceed 14%. Obvious signs of moisture issues may include warping, peaking, degradation of the integrity of the substrate, rusted fasteners, and rusted floor registers.
Ceramic Tile, Terrazzo, Resilient Tile, Non-Cushion Sheet Vinyl, and Metal
Pre-existing coverings must be well bonded to the underlying substrate. When installing Metrostone in commercial settings, fill in grout joints and imperfections on ceramic tiles, quarry tiles, terrazzo, and similar floors with an appropriate floor patching compound. In most cases, filling grout joints is not required for residential applications. Grout joints will need to be filled in bonded applications. Always ensure compliance with substrate flatness tolerances.
UNAPPROVED SUBSTRATES
The substrates listed below are not approved and must be removed, including any underlying adhesives, prior to installation. Pre-existing adhesives must be removed so all that remains is a thin, smooth film. The remaining film should be properly encapsulated using an appropriate floor patching compound or completely removed by a non-chemical method such as shot blasting or grinding.
· Carpet or Carpet Cushion · Cushion Back Sheet Vinyl · Floating Floors · Engineered Hardwood Over Concrete · Solid Hardwood Over Concrete · Parquet Over Concrete · Sleeper Substrates
NOTE: Various federal, state, and local government agencies have established regulations governing the removal of in-place asbestos-containing material. If you contemplate the removal of a resilient floor covering structure that contains (or is presumed to contain) asbestos, you must review and comply with all applicable regulations. Do not sand, dry sweep, dry scrape, drill, saw, bead blast, or mechanically chip or pulverize existing resilient flooring, backing, lining felt, asphalt “cut-back” adhesive, or other adhesives. These products may contain asbestos fibers and/or crystalline silica. Avoid creating dust. Inhalation of such dust is a cancer and respiratory tract hazard. Smoking by individuals exposed to asbestos fibers greatly increases the risk of bodily harm. Unless positively certain that the product is a non-asbestos containing material, you must presume it contains asbestos. Regulations may require that the material be tested to determine asbestos content. The RFCI’s Recommended Work Practices for Removal of Resilient Floor Covering are a defined set of instructions addressed to the task of removing all resilient floor covering structures. For further information, contact the Resilient Floor Covering Institute website at www.rfci.com.
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METROSTONE
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SUBSTRATE PREPARATION
Metrostone must be installed on a properly prepared substrate. The selection of preparation products is dependent upon the circumstances of each project. The application of all products must be performed in strict accordance with the respective manufacturer’s instructions. Responsibility for the performance or suitability of any preparation or ancillary product including, wood underlayments, moisture mitigation/ management systems, floor patching compounds, self-leveling underlayments, sealers, primers, and other such items rests with the manufacturer of the ancillary product or the flooring contractor.
Metrostone includes an integrated pre-attached pad, use of additional underlayment pad is not permitted.
MATERIAL STORAGE, ACCLIMATION, AND INSPECTION
Warehousing: Store all materials flat and off the floor in a climate controlled, weather-tight space between 50°F and 100°F (10°C and 38°C). Do not double-stack pallets.
Delivery: Make sure materials are well secured during transit to avoid preventable damage.
Handling: Always exercise caution when handling cartons, being careful not to damage material.
Job Site Storage/Staging: Immediately remove any shrinkwrap and place materials within the project to acclimate to service conditions. Store all materials flat, fully supported, and placed into well-aligned stacks. Make certain the stacks are no more than six (6) cartons high and at least 4″ apart. Cartons should never be stored or left standing on end. Keep cartons away from heating/cooling ducts, direct sunlight, or any other source of extreme temperatures. If permanent HVAC is not yet in operation, temporary means should be used to maintain the noted temperature and RH.
Temporary Heating: Only suitable temporary HVAC systems should be used, which may include electrical heat or directvent heating systems. The use of any propane or kerosene forced-air heaters, any vent-free or ventless heaters, and/or any other type of unvented fuel-burning heating systems is not permitted. Temporary heating must be in constant operation until a permanent HVAC system is fully operational. It is recommended that projects installed while using temporary heating have supporting documentation of the environmental conditions before, during, and after the installation.
Acclimation: Acclimation of the flooring material is recommended for all projects; however, only commercial installations require acclimation. The flooring material, ancillary products, and the project area should be acclimated for as long as necessary to reach service-conditions. Acclimation should be done within climate-controlled structures between 50°F and 100°F (10°C and 38°C) and 40%-60% ambient RH for a minimum of 48 hours before installation, during installation, and indefinitely thereafter.

Confirmation: Confirm that the material is of the correct style, color, quantity, and run number. Locate the run number on the short end of each carton and verify that all the materials are of the same run number. Minor shade variations within the same run number contribute to the natural look of Metrostone. To avoid noticeable shade variations, do not install material of different run numbers across large expanses.
Inspection: Prior to installation, check material for defect or damage.
Notification: Always report any damage, concerns, or discrepancies to the retailer from which the floor was purchased. If any issues have been identified, the installation should not progress until all matters have been resolved.
PREPARE THE PROJECT
1. Check the HVAC: Confirm the structure’s HVAC system is in full operation. The building should be maintained at service conditions between 50°F and 100°F (10°C and 38°C) at least 48 hours before installation, during installation, and indefinitely thereafter.
2. Acclimation: Acclimate the materials, and the jobsite for as long as necessary to reach service-conditions.
3. Remove Floor Moldings: Quarter round and/or wall base should be carefully removed before installation begins.
4. Remove Unapproved Substrates: Unapproved substates and adhesives cannot be installed over and must be removed.
5. Evaluate the Substrate: Check the substrate for flatness, excess moisture, levelness, and ensure the structure is sound and free of excessive deflection.
6. Perform Substrate Preparation: Perform all necessary preparations to ensure the project is in compliance with all aforementioned specifications.
7. Door Jambs & Casings:
a. Wood door jambs and casings should be undercut so that Metrostone will fit neatly beneath, concealing the expansion space.
b. Metal door jambs may need to be left undisturbed. In such instances, Metrostone must be cut around the jambs and casings, leaving the appropriate expansion space. Fill the expansion space with a coordinating premium waterproof flexible sealant, such as 100% silicone, upon completion of the project.
8. Clean the Substrate: Sweep and vacuum the substrate to remove all dust, dirt, and debris.
9. Perform Final Qualification: Perform a final acceptance inspection of the substrate and project. Make sure the substrate is completely clean, dry, smooth, flat, and all necessary preparations have been properly completed and documented. Installation of flooring acknowledges acceptance of material and project conditions.

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METROSTONE
Waterproof SPC by METROFLORTM
INSTALLATION OF METROSTONE
Understanding the Edge Profiles:

Short Joint

Long Joint

Layout: The project layout should be discussed with and approved by the architect, designer, general contractor, enduser, and/or homeowner prior to installation of material.

Balance the Room: Balance the layout by measuring and marking

A

A

the center-point on both sides of

the room (2a.). Connect the marks

using a chalk line to create the

B

C

B

C

centerline of the area. (2b.) (For tile

format installations, an additional

perpendicular centerline may be

necessary to ensure the room is

properly balanced on all four sides.)

2a.

D

2b.

D

Establish the Starting Line: Starting at the centerline, assemble a column

of material working toward the

starting wall (wall A); continue

until no additional full-width pieces

can be laid. Place a mark on the

substrate along the long edge of

the last full-width peice, closest to the starting wall. (3a) Snap an

B

additional chalk line at this location

3a.

while ensuring that it is perfectly

parallel to the centerline. (3b) (Note:

If the perimeter pieces are less than

half the width of a piece, offset the

starting line by shifting away from

the starting wall by a distance equal

to half the width of a piece.)

A

A

B

C

C

3b.

D

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METROSTONE
Waterproof SPC by METROFLORTM

4. Position the First Row: Place
full pieces end-to-end along the

A

starting-line with the long tongue-

edge facing the starting wall, without

engaging the short joints.

B

C

Mark and Cut First Row: To transfer the contours of the starting wall

onto the first row, a “scribing

block” will be necessary. To create

a scribing block, first determine

the size needed by measuring the

width of the flooring (excluding the

locking profiles) plus an additional ¼” for a residential project or 3/8″

B

for a commercial project. Cut a

5a.

5b.

piece of scrap flooring, plywood, or

similar material to this measurement.

Place the scribing block against the

wall; mark a line at the edge of the

scribing block. Slide the scribing

block along the starting wall while

continuing to mark. Carefully cut

the marked material on the line,

these pieces will be used for row #1.

Determine Proper Staggering: Tile format installations should be staggered in a brick-laid pattern with stagger equal to half of a tile.

A
Half Tile Minimum

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METROSTONE
Waterproof SPC by METROFLORTM

Sequence of Installation: Installation will move from left to right, beginning in the left corner while facing the starting wall. The installation will alternate back

A

and forth between rows one and two, for the first two rows only.

B

C

Install Starting Rows: Place the first piece of row #1 several inches from

the starting wall with the long cut

edge facing the starting wall. (8a.)

Cut the first piece of row #2 to one-

third its length. Interlock the long

tongue-edge of the first piece of

row #2 into the long groove-edge

of the first piece of row #1, ensuring

that there are no gaps. (8b.) Using a 8a.

8b.

hammer and a Prevail Tapping Block,

carefully tap along the long groove-

edge to fully engage the joints. Make

certain the long joints are engaged

before tapping down the short

joints using a soft face hammer. (8c)

Continue installing rows #1 and #2

until you reach the opposite wall

and cannot install another full-length

piece.

8c.

8d.

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Install Last Pieces of Rows 1 and 2: Measure, mark, and cut the final

pieces of rows #1 and #2 ensuring

both sides of the rows have proper

expansion space. Residential projects

require a 1/4″ expansion space and

commercial projects require a 3/8″

expansion space. Place appropriately

sized spacers along the left, right,

and starting walls. Slide the assembly 9a.

over and against the spacers along

the starting wall.

METROSTONE
Waterproof SPC by METROFLORTM

A

B

C

9b.

9c.

9d.

Install Remaining Rows: Install the remaining material, one row after another.

10. Always tap the long joint tight using the Prevail Tapping Block before tapping

A

the short joint down using the soft face hammer. Maintain the required stagger

throughout the installation

B

C

D

Install the Final Row: Using the scribing block; mark, cut, and install

the final row. Always ensure proper

expansion is provided. Use a pull

bar to fully engage the long joints.

Do not use the pull bar on the short

edges.

11a.

11b.

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METROSTONE
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FINISH THE PROJECT
1. Trim Moldings: Remove all spacers and reinstall moldings and trim, being sure not to restrict the assembly. Metrostone is a floating floor and must be allowed to expand and contract freely. It should not be nailed or fastened through the flooring and into the substrate or structure.
2. Transitions: ·A reducer, T-molding, end-cap, or stair-nosing is required when transitioning between different flooring-coverings, at appropriate terminations, and other suitable circumstances. ·Commercial projects require that a T-molding be used in areas greater than 100 ft. (30.48 M) in any direction to divide the assembly into smaller sections. ·Commercial projects require that T-Molding is used to separate installations in adjoining spaces interconnected by a narrow opening, such as a doorway between rooms.
3. Clean-up the Jobsite: Remove any product scraps and tools from the jobsite. Sweep and damp mop the flooring to ensure all dust, dirt, and debris are removed from the surface of the finished flooring.
4. Wet-Area Expansion Spaces: Fill expansion spaces around potential wet areas with premium waterproof 100% silicone sealant.
5. Protect the Floors: Newly installed flooring must be protected from damage of other trades.
6. Reset Fixtures and Furniture: Set fixtures and furniture back in place, ensuring that objects are not slid across the surface of the new flooring.
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METROSTONE
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APPLICATIONS WITH ADDITIONAL SPECIFICATIONS OR CONSIDERATIONS

BONDED INSTALLATION METHOD
Metrostone may be installed using the bonded installation method contingent that:
·The application is limited to residential use.
·The substrate flatness is well within 3/16″ in a 10′ radius with no abrupt changes in elevation.
·The flooring material, ancillary products, and the jobsite have been acclimated for as long as necessary to reach service-conditions. Acclimation should be done within climate-controlled structures between 65°F – 85°F and 40%-60% ambient RH for a minimum of 48 hours before installation, during installation,and indefinitely thereafter.
·Prevail 3500 Hard-Set Adhesive is used in a semi-wet application. Other adhesives are not approved and should not be used.
·An adhesive bond test is performed prior to the installation of Metrostone.
·Metrostone is not bonded and floated within a continuous assembly. A T-molding is required to separate areas of differing application methodologies.
Additional Unapproved Substrates For Bonded Installations
·Engineered hardwood
·Solid hardwood
·Parquet
Installation
The room layout must be set-up so that all flooring can be installed while working off of freshly installed tiles/tiles. This will keep the product from shifting, minimize adhesive displacement, and prevent wet adhesive from oozing up onto the surface of the product. Determine the starting wall and create work zones that are no wider than the installer’s comfortable arm reach and in multiples of the product’s width. Measure and snap chalk lines parallel to the starting line and spread adhesive within the work zone. Install Metrostone using Prevail 3500 per the specifications below. Metrostone must be installed before the adhesive has become dry-to-touch. Roll each work zone cross directionally with a 100 lb three-section roller immediately after installation. Continue installation by repeating the process until the room is complete.
Newly installed flooring must be protected from foot traffic while the adhesive is setting. Early foot trafic, as well as point

or rolling loads, can cause shifting of tiles/tiles, adhesive displacement, or breaking of the bond between the adhesive and the product or substrate.
Absorbent Substrates
Apply adhesive using a 1/16″ x 1/16″ x 1/16″ Square notch trowel (Spread Rate = 125-150 Sq.Ft./Gallon). The flooring material can be immediately placed into the adhesive.
Non-Absorbent Substrates
Apply adhesive using a 1/16″ x 1/16″ x 1/16″ V notch trowel (Spread Rate = 165 – 200 Sq. Ft./Gallon). The adhesive valleys must begin transitioning to clear before placing flooring material into the adhesive.
THREE-SEASON ROOMS
Metrostone may be installed in “three-season rooms” contingent that:
·The application is limited to residential use. ·The assembly does not exceed 500 Sq.Ft. (46.5 Sq.m) ·The space must be completely enclosed (roof, floor,
doors, walls, and windows) and not exposed to the outside elements. ·A room temperature between 50°F and 100°F (10°C and 38°C) is maintained during the installation. ·A 3/8″ (10 mm) expansion space is provided around the perimeter and all vertical obstructions.
INSTALLING CABINETS ON TOP OF METROSTONE
Cabinets may be installed on Metrostone contingent that: ·The application is limited to residential use. ·Cabinets or similar fixtures are not secured, or affixed (via screws, nails, etc.), in a manner which restricts the flooring’s ability to expand and contract. ·Proper perimeter expansion space is provided at all walls or other vertical obstructions, including pipes or other objects. This includes any obstructions or objects under, or concealed by, the cabinets.

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METROSTONE
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CARE AND MAINTENANCE

·Sweep, dust mop or vacuum regularly.
·Do not use vacuums with any type of beater bar assembly.
·Do not use steam cleaners/mops.
·While cleaning, do not flood floor or subject to standing liquids.
·Do not use vinegar, polishes, waxes, oil soaps, abrasive cleaners, harsh detergents, “mop and shine” products or solvents.
·Always remove standing water, pet urine and other liquids promptly. Follow with Prevail 1-Step Neutral Cleaner or Prevail Ready to Use Neutral Cleaner.
·Lightly damp mop with Prevail Neutral Cleaner. Remove excess soil by carefully scrubbing with a soft nylon brush or eraser sponge and Prevail Neutral Cleaner.
·Remove scuffs using Prevail Neutral Cleaner and a soft nylon brush or eraser sponge.
·Heavily soiled floors may require an occasional deep cleaning using Prevail Neutral Cleaner and a low-speed buffer with a red or white nonaggressive scrubbing pad and agitate the solution throughout the space. Remove the dirty residue by damp mopping with clean water.
·Do not expose Metrostone to intense direct sunlight for prolonged periods. Direct Sunlight may cause issues including, but not limited to, fading, lifting, or joint separation. Protect Metrostone from direct sunlight using window treatments or UV tinting on windows. Metrostone is not recommended for use in sunrooms.

·Use non-staining walk-off mats at all outside entrances. Avoid the use of rubber-backed mats, as certain rubber compounds can permanently stain vinyl.
·In order to prevent indentations and scratches, provide glass, plastic, felt, or other non-staining cups with flat under-surfaces not less than 2″ wide for the legs of heavy furniture or appliances.
·Equip swivel-type office chairs and other rolling furniture with broad- surface, non-staining casters at least 2″ in diameter. Caster wheels should be appropriate for use with hard-surface resilient flooring products.
·Hard-surface protective mats are specifically designed to allow office chairs to easily roll across a surface while protecting the underlying floor covering from damage. Hard-surface protective mats are recommended in areas of frequent or heavy usage and especially in areas where castor chairs are utilized. Prior to placing a new protective mat, the floor covering should be completely clean and free from dust, dirt, and debris. Protective mats that have become damaged should be immediately replaced to provide continued protection and prevent additional damage.
·Remove small diameter buttons from the legs of straight chairs and replace with metal or felt glides that have bearing surfaces no less than 1″ in diameter.

WARRANTY REGISTRATION

To register and activate your product warranty, please visit metroflor.com. The registration information you provide will be used only to register your purchase and for no other purpose.

For further information, please call Metroflor Customer Service at 888-235-6672, or visit our website at metroflor.com.

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References

• Luxury Vinyl Tile (LVT) & Luxury Vinyl Plank (LVP) Specialists - Metroflor
• Mold | US EPA

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