1.) PRODUCT DESCRIPTION

A) Composition
Dex-O-Tex Neotex-261 is a troweled, jointless floor. It is a water-phase resin material which is applied in a series of coats to achieve a smooth finish. It can also form an integral, sanitary coved base. Dex-O-Tex Neotex-261 is resistant to a wide range of acids, solvents and food fats (contact Crossfield Products Corp. for separate chemical resistance tables). In itself, the material is waterproof but for positive protection against leakage due to cracking of the surface over which Dex-O-Tex is applied, a Dex-O-Tex Waterproof Membrane should be specified (see pertinent Dex-O-Tex Product Description Sheets). Dex-O-Tex Neotex-261 can be installed over concrete, metal or wood surfaces (consult Crossfield Products Corp. for detailed specifications for wood surfaces).

Thickness of Dex-O-Tex Neotex-261 is approximately 1/4" (6.35 mm). See Dex-O-Tex Color Chart for colors. Final finish of Dex-O-Tex is available in choice of several gradations of slip-resistance.

As compared to epoxy flooring materials, Dex-O-Tex Neotex-261 is virtually unaffected by moisture vapor transmission coming upwards through concrete floors.

B) Typical Uses
Floors for animal housing, many industrial uses, television studios, institutional service, lockers, toilet and shower rooms – in general, areas where sanitation, waterproofness and chemical resistance are important.

C) Advantages – Limitations

Advantages
1. Monolithic, including integral base where specified.
2. Resistant to many chemicals.
3. Can be installed over wide range of new and existing surfaces with excellent adhesion.
4. No toxic odors during installation.
5. Low burning rate and negligible smoke production.
6. Waterproof – in conjunction with Dex-O-Tex Membrane.
7. Installed only by Qualified Dex-O-Tex Contractors – factory trained and approved.

Limitations
1. Not designed for constant heavy steel-wheeled trucking.
2. If sub-surface cracks, Dex-O-Tex Neotex may reflect cracks to some degree.

2.) PHYSICAL CHARACTERISTICS AND TECHNICAL DATA

A) Compressive Strength
ASTM C-109 (2" x 2") cubes
5,450 psi
(384 kg/cm²)

B) Resistance to Heavy Rolling Load
Crossfield Products Corp. Test Standard #1-39T (2" wide cast iron wheel with 500 lb. (227 kg) load, 500 strokes; test run both on dry sample and sample immediately after immersion in water for 24 hours).
Dry – .002" indentation
(.051mm)
Wet – .005" indentation
(.127mm)

C) Surface Hardness
ASTM D-2240-68 (Durometer)
Scale "D" 80

D) Indentation Characteristics
(Steadily Applied Load)
MIL-D-3134, Para. 4.7.4.2.1 (2000 lbs. on 1" steel ram imposed for 30 minutes)
1.04%

E) Indentation Characteristics
(Impacted Load)
MIL-D-3134, Para. 4.7.3 (2 lb. (908 kg) steel ball dropped from 8 foot (2.4 m) height)
0.034" indentation
(0.8636mm)
No cracking or loosening

F) Adhesion
MIL-D-3134, Para. 4.7.14 (Shear from steel plate after 96 hours)
301 psi
(21.21 kg/cm²)

G) Tensile Strength
ASTM C-190
889 psi
(62.63 kg/cm²)

H) Flammability
NFPA 101-88 Life Safety Code*
Class I Interior Floor Finish
*Critical radiant flux –
minimum of 0.45 watts per
square centimeter – (watts/cm²)
– NFPA Test Method 253-84,
1.07 watts/cm²

Specific Optical Density (DM)
NFPA Test Method 258-89
Thermal Exposure: Flaming
110.7

I) Resistance to Elevated
Temperatures
MIL-D-3134, Para. 4.7.5.1
No flow or slip

J) Slip-Resistance
(Coefficient of Friction)
Varies depending upon
surface texture selected

K) Abrasion Resistance
ASTM C-501 (H-22 Wheel)
Wear Index – 30.4

L) Coefficient of Thermal Expansion
ASTM C-531
2.82 x 10-6

M) Flexural Strength
ASTM C-790
2498 psi
(175.97 kg/cm²)

N) Water Absorption
MIL-D-3134, Para. 4.7.8
2.81%

O) Electrical Conductivity
Di-electric

P) Chemical Resistance
Contact Crossfield Products
Corp. for separate chemical
resistance tables.

3.) INSTALLATION

A) Prepare surfaces by removal of laitance, grease, foreign matter.
B) Apply Dex-O-Tex Waterproof Membrane, if specified.
C) Apply bonding coat by trowel or brush.
D) Trowel apply 1/4" body coat
E) Apply two grout coats to fill in and smooth off body coat.
F) Power sand to remove trowel marks.
G) Roller apply two coats of saturating final-finish dressing in texture as selected.

Note: Special Dex-O-Tex Drains, Floor Cleanouts, etc., are available from most major drain manufacturers. These should be used in conjunction with Dex-O-Tex Neotex. Consult Crossfield Products Corp. for current listing and plumbing roughings.

4.) PRODUCT AVAILABILITY

Crossfield Products Corp. maintains offices and/or factories at all addresses listed above. Qualified Dex-O-Tex Contractors are established in all major trading areas in the United States, Canada and various European and Far Eastern nations.

5.) MAINTENANCE

After period of sustained abrasive wear, floor may require a repeat maintenance roller coat of final-finish dressing.

6.) SPECIFICATION ASSISTANCE

Consult Crossfield Products Corp. for specification assistance, detailing, etc. This consultation is highly recommended prior to specification.


SECTION 09670
LATEX MASTIC FLOORING
DEX-O-TEX NEOTEX-261

PART 1.00 - GENERAL

1.01 GENERAL REQUIREMENTS
A. Work of this Section, as shown or specified, shall be in accordance with the requirements of the Contract Documents.

1.02 WORK INCLUDED
A. Work of this Section includes all labor, materials, equipment and services necessary to complete the latex mastic flooring as scheduled on the drawings and/or specified herein.

1.03 RELATED WORK
A. Concrete - Section 03300.
(Note to Specifier: Concrete should be either water-cured or cured using sodium silicate curing compounds only. Other types of curing compounds are generally not acceptable. Concrete should be cured for a minimum of 28 days. On grade floors should have vapor retarder beneath slab.)

B. Floor drains - Division 15.
(Note to Specifier: Floor drains, clean-outs, etc., should be of the "floor-flange" type as manufactured for use with composition floors by most major drain manufacturers.)

1.04 SUBMITTALS
A. General: Submit the following in accordance with Conditions of Contract and Division 1 Specification Sections.

B. Product Data: Submit manufacturer's technical data, application instructions and general recommendations for the latex mastic flooring specified herein.

C. Samples
1. Submit 2-1/2" x 4" samples of underlayment as designated by the Architect.

D. Material certificates signed by manufacturer certifying that the latex mastic flooring complies with requirement specified herein.

1.05 QUALITY ASSURANCE
A. Installer Qualifications: Engage an experienced installer or applicator who has specialized in installing latex mastic flooring types similar to that required for this Project and who is acceptable to manufacturer of primary materials.

B. Single-Source Responsibility: Obtain latex mastic composition materials, including primers, resins, hardening agents, and finish or sealing coats, from a single manufacturer.

C. Request for substitution: Request for material approvals must be submitted to the architect two weeks prior to the bid date, including complete application specifications, physical characteristics and chemical data. Request will not be accepted after this date. Failure of performance requires immediate removal and replacement of substituted materials with those originally specified at no cost to the owner, architect, construction manager, or general contractor.

1.06 DELIVERY, STORAGE AND HANDLING
A. Deliver materials in original packages and containers with seals unbroken and bearing manufacturer's labels containing brand name and directions for storage and mixing with other components.

B. Store materials to comply with manufacturer's directions to prevent deterioration from moisture, heat, cold, direct sunlight, or other detrimental effects.

1.07 PROJECT CONDITIONS
A. Environmental Conditions: Comply with latex mastic flooring manufacturer's directions for maintenance of ambient and substrate temperature, moisture, humidity, ventilation, and other conditions required to execute and protect Work.

B. Lighting: Permanent lighting will be in place and working before installing resinous polyacrylate.

PART 2.00 - PRODUCTS

2.01 MATERIALS
A. Troweled latex mastic flooring shall be Dex-O-Tex Neotex-261 as manufactured by Crossfield Products Corp., Rancho Dominguez, California; Roselle Park, New Jersey; Hinsdale, Illinois; Moss Point, Mississippi; Tacoma, Washington.

2.02 PROPERTIES
A. Physical Properties:
Provide latex mastic flooring system that meets or exceeds the listed minimum physical property requirements when tested according to the referenced standard test method in parentheses.

Compressive Strength
(ASTM C-109)
5,450 psi

Tensile Strength
(ASTM C-190)
889 psi

Surface Hardness
(ASTM D-2240)
Scale "D" 80

Water Absorption
(MIL-D-3134)
3.4 percent max.

Indentation
(MIL-D-3134)
0.034 indention

Impact Resistance
(Gardner Impact Tester)
No chipping, cracking, or
delamination and not more
than 0.014"

Adhesion
(A.C.I. Comm. No. 403)
301 psi

Flammability
(NFPA 101-88)
Class 1 Interior Finish

Coefficient of Thermal Expansion
(ASTM C-531)
2.82 x 10-6

PART 3.00 - EXECUTION

3.01 INSPECTION
A. Examine the areas and conditions where the latex mastic flooring is to be installed and notify the Architect of conditions detrimental to the proper and timely completion of the work. Do not proceed with the work until unsatisfactory conditions have been corrected by the Contractor in conformance with the Contract Documents.

3.02 PREPARATION
A. Substrate: Perform preparation and cleaning procedures according to latex mastic flooring manufacturer's instructions for particular substrate conditions involved, and as specified. Provide clean, dry, and neutral substrate for application of latex mastic flooring.

B. Concrete Surfaces: Shot-blast, acid etch or power scarify as required to obtain optimum bond of latex mastic to concrete. Remove sufficient material to provide a sound surface free of laitance, glaze, efflorescence, and any bond-inhibiting curing compounds or form release agents. Remove grease, oil, and other penetrating contaminates. Repair damaged and deteriorated concrete to acceptable condition. Leave surface free of dust, dirt, laitance, and efflorescence.

C. Materials: Mix resin catalyst and aggregate when required, and prepare materials according to latex mastic flooring system manufacturer's instructions.

3.03 APPLICATION
A. General: Apply each component of latex mastic flooring system according to manufacturer's directions to produce a uniform monolithic latex mastic surface of thickness indicated.

B. Bond Coat: Apply bond coat over prepared substrate at manufacturer's recommended spreading rate.

C. Body Coat: Over primer, trowel apply latex mastic mortar mix at nominal thickness of 1/4 inch; hand or power trowel. When cured, sand or grind if necessary to remove trowel marks and roughness.

D. Grout Coat: Apply grout to fill porosity in the latex mastic. Provide a smooth, even finish. When cured, sand or grind if necessary to remove trowel marks.

E. Finish Coats: Apply two coats of DC Finish, or Colorseal, over the prepared surface. Take care to provide a smooth, even finish.

3.04 CURING, PROTECTION AND CLEANING
A. Cure latex mastic flooring materials according to manufacturer's directions, taking care to prevent contamination during application stages and before completing curing process. Close application area for a minimum of 24 hours after application of the final finish.