Floor temperatures must be a minimum of 70° for 24 hours prior to installation. Floor temperature can usually vary 5-10°lower than room temperature. Modules must be conditioned to room temperature for 24 hours prior to installation. Relative humidity must be between 12% – 65% maximum for 24 hours prior to installation. These conditions must also bemaintained for 48 hours after completion of installation.


Dust, dirt, debris, and noncompatible adhesive must be removed before installation begins. Surfaces must be smooth and level with all holes and cracks filled with a latex based Portland cement patching compound.


Must be removed and floors sanded or covered with a skim coat of Portland patching compound. Latex adhesive may also be covered with ENcapSeal adhesive sealer (800-747-2722).

Note: Failure to remove or seal old latex adhesive may cause installation failure, plasticizer migration, shifting, buckling or edge curling; these conditions will not be covered under warranty.


Must be wet scrapped and covered with ENcapSeal (800-747-2722).

Note: Failure to remove or seal old cut back adhesive may cause installation failure, plasticizer migration, shifting, buckling or edge curling; these conditions will not be covered under warranty.


Subfloor surfaces must be tested for moisture content. It is the responsibility of the general contractor to perform moisture test prior to starting the installation. MANNINGTON recommends calcium chloride tests be performed to detect the presence of moisture. Acceptable results require that moisture content does not exceed 3lbs. Per 1,000 square feet per 24 hours. Contact Technical Services for recommendations for readings over 3 lbs. Mannington will also accept the Relative

HumidtiyASTM-F-2170 test method. Acceptable moisture levels are 75% maximum relative humidity. Alkalinity must have a maximum Ph level of 9 or less. Contact Technical Services for corrective measures for substrates that test over 9 Ph.


Moisture emissions in excess of the recommended levels can cause the adhesive to chemically break down and fail. This condition can result in shifting, bucking, or edge curling of the modules.


New Concrete

– New concrete must be fully cured and free of moisture. New concrete requires a curing period of approximately 90 days. Test for moisture and alkalinity must be performed. pH should register between 5 and 9.

Old Concrete

– Old concrete should be checked for moisture. Dry, dusty, porous floors must be sealed with an appropriate dust sealer.


– Wood floors must be smooth and level. If floor is uneven, an approved underlayment may be required. Old finishes must be tested for compatibility with adhesives or removed and porous wood sealed.

Terrazzo / Marble

– Level all grout lines with a latex based Portland cement patching compound. Glossy surfaces must be sanded for adhesive bond.

Hard Surfaces

– Tiles must be well secured to the floor or removed. Broken, damaged, or loose tiles must be replaced. Wax must be removed from VCT before applying adhesive. Existing sheet vinyl is not a suitable substrate for modular installation and should be removed.


Remove old carpet and check adhesive for compatibility. If unsure remove or cover adhesive with a Portland based patching compound or encapsulate with ENcapSeal (800-747-2722)


MANNINGTON recommends a full spread adhesive system for the most trouble free installation. Modules can easily shift during the installation process or by heavy rolling traffic if not fully adhered to the substrate. Fully spread Mannington’s MT- 711 pressure sensitive adhesive in starting quadrant using “U” notch trowel 1/16 x 1/32 x 1/32 (1/16″ notch width, 1/32″notch depth, 1/32″ tooth tip width) or an equivalent that will achieve the proper coverage. Allow to dry so adhesive does not transfer when touched. Proceed with tile placement. Spread rate should be approximately 25 sq. yds. per gallon for trowel on applications.

Note: Inadequate amounts of adhesive can cause modules to shift and move and will not be covered under warranty. Strictly adhere to recommended spread rates. Use the recommend notch trowel or an equivalent that will achieve the proper coverage.

Note: For Mannington’s 15-year bond warranty MT-711 must be used. Mannington will not be responsible for the adhesive bond where other adhesives have been used.


Measure area to be carpeted to determine best staring positions. Chalk two lines that intersect these positions at right angles. fProper planning should avoid trimming perimeter tiles more than ½ their width (9 inches for 18″ x 18″ tiles).


Starting in the corner of one quadrant, install tiles in a pyramid fashion. Install by butting edges together evenly, being careful not to compress modules (this can cause peaked edges). Arrows are embossed or printed on the module backing to show pile direction. Unless instructions are stated for quarter turn installation, always lay tile with the arrows in the same direction. To ensure proper alignment, check spacing every ten modules. Measure ten 18-inch modules for a total of 180 inches; proper spacing should be within ¼ inch. Continue to check spacing every ten modules throughout the entire installation.


It is very important to install MANNINGTON Modular tiles in the order they were manufactured; this is easily accomplished by selecting pallets in sequential order and following the numbers located on each carton of tiles. Typically an installation will begin with the lowest carton numbers and progress through the highest numbers until project is complete. Installing MANNINGTON Modular tiles by carton sequence will assure the most even uniform look possible.


Carpet modules will require cutting at perimeters, floor electrical outlets, and door openings. Whenever modules are cut or trimmed, adhesive must be used. Loop pile modules may require some trimming or clipping of tufts. This is typical of this type construction and is not a manufacturing problem. Small pieces of carpet tile should also have glue applied to the backing to help hold them in place.


Flatwire cables are easily accessible when carpet modules are used. Cable should be centered under modules and no adhesive used unless approved by the manufacturer. Trench headers require a control grid of adhesive on either side of header panels to prevent movement.


Use a raised stair nosing and cut tiles to fit nosing, both step and riser. Use full spread adhesive under modules.


When heavy furniture and wheeled traffic is moved over tiles, use plywood runner to avoid tile shifting. Roll entire job with 75-100 lb roller after completion of installation.


Chair pads are recommended for use under chairs with roller casters. Casters should be the flat round type with 5/8″ to 1″ width minimum. If chair pads are not used, the appearance of the modules will decrease and maintenance and/or shifting of the modules may be required more frequently.


Carpet modules with loop pile constructions may experience yarn blossoming at the edges, which is consistent with this type of construction. Clipping or shearing the yarn edges can remedy this condition.


Some carpet styles require more attention from the installers during installation. Due to the light row, dark row construction of these products, dark lines may appear at the edges.

This is not a manufacturing defect. These products will require shifting tiles around to avoid dark lines at the edges.

Some carpet tile constructions are designed for random installation. This type of carpet tile installation is very installer friendly because it eliminates having to locate the directional arrow on back of the tile. There is still a possibility of having to shift the tiles around to avoid dark lines at the edges.


On occasion, it may be necessary to replace damaged or heavily soiled modules. Modules can be replaced with new MANNINGTON tiles from on-site inventory or from another areas of the installation. A difference of appearance may be noticed when modules are replaced; this difference usually diminishes in a short time.

The procedures listed above are our best recommendations for installing INFINITY MODULAR (Carpet Tile) Backing. This document and other literature are available upon request. If you have further questions or require additional information, please contact our Technical Services Department at 800-241-2262 Ext. 3.