RECOMMENDED SPECIFICATION FOR MAXXON® DPM SURFACE APPLIED VAPOR RETARDER AND
MAXXON® UNDERLAYMENT RESURFACER FOR FINISHED FLOOR GOODS
PART 1 GENERAL
1.01 SUMMARY
A. This is the recommended specification for Maxxon DPM (Damp Proof Membrane) Surface
Applied Vapor Retarder and Maxxon Underlayment Resurfacer for Finished Floor Goods.
B. Repairs and preparation of concrete floors
C. Related Sections: (Delete or add necessary sections)
1. Section 03540 Cementitious Self-Leveling Underlayment
2. Section 09620 Resilient Athletic Flooring
3. Section 09630 Masonry Flooring
4. Section 09640 Wood Flooring
5. Section 09650 Resilient Flooring
6. Section 09670 Fluid-Applied Flooring
7. Section 09680 Carpet
1.02 REFERENCES
A. ASTM F 1869 – Standard Test Method for Measuring Moisture Vapor Emission
Rate of Concrete Subfloor Using Anhydrous Calcium Chloride; 1998.
B. ASTM E 1907 – Standard Practices for Determining Moisture-Related Acceptability of
Concrete Floors to Receive Moisture-Sensitive Finishes; 1997.
C. ASTM C 96 – Standard Test Methods for Water Vapor Transmission of Materials; 1995.
D. ASTM D 4541B –Pull-off Strength of Coatings; 1995, Modified.
1.03 SECTION INCLUDES
A. Maxxon DPM (Damp Proof Membrane)
B. Recommended Maxxon Underlayment
1.04 QUALITY ASSURANCE
A. Manufacturer Qualifications: Maxxon Corporation specializing in manufacturing products
specified in this Section with minimum 5 years documented experience. 1-800-356-7887
or 763-478-9600.
B. Installer's Qualifications: Installation of Maxxon DPM and Maxxon Underlayment shall be
by an applicator authorized by Maxxon Corporation using Maxxon approved mixing and
pumping equipment.
1.05 SITE CONDITIONS
A. Environmental Requirements: Before, during and after installation of Maxxon DPM and
Maxxon Underlayments, building interior shall be enclosed and maintained at a temperature
above 50 ° F (10 ° C) and below 90 ° F (32 ° C) until structure and subfloor temperature
are stabilized.
PART 2 PRODUCTS
2.01 MATERIALS
A. Maxxon DPM Surface Applied Vapor Retarder:
One-part system consisting of a two-component moisture tolerant, high density, low odor,
chemically enhanced epoxy based product which must reduce vapor emissions to 3 lbs./24
hours * 1000 SF or less and be compatible with floor finishes and adhesives approved by the
manufacturer. Characteristics:
1. Component A and B: Precise blend of white and yellowish liquid
2. Compressive Strength: >11,000 psi (>80 Mpa) (ASTM D-695)
3. Flexural Strength: >4,000 psi (>27 Mpa) (ASTM D-790)
4. Bond/Adhesion: >100 psi (>0.7 Mpa) at 5 day old concrete
(ASTM D-4541) >500 psi (>3.5 Mpa) at 28 days on moist concrete
>500 psi (>3.5 Mpa) at 28 days on dry concrete
5. Permeance: (ASTM E-96) <1.0 perm (<5.7E-08 grams/Pa * s * m 2 )
6. Cured for installation of flooring 12 hrs at 73 ° F (23 ° C)
B. Maxxon Underlayment: Floor underlayment compound manufactured and recommended by
Maxxon Corporation, Hamel, MN. All others must receive prior approval.
2.02 MIX DESIGNS
A. Maxxon Underlayment Mix Designs: Mix proportions and methods shall be in strict accordance
with Maxxon Corporation recommendations.
PART 3 EXECUTION
3.01 EXAMINATION
A. Examine all construction substrates and conditions under which Maxxon DPM material is to
be installed. Do not proceed with the Maxxon DPM installation until unsatisfactory
conditions are corrected.
3.02 PREPARATION
A. Protect adjacent surfaces not designated to receive Maxxon DPM.
B. Substrate preparation:
1. Remove existing floor coverings, coatings and adhesives down to bare concrete, curing
compounds, efforescence, dust, grease, laitance, etc. with steel shot blasting, abrasive
(sand) blasting or grinding using a diamond cup blade. Acid etching is not recommended.
2. Assure that all slabs have surface profile ICRI CSP 2-5 (ICRI, Des Plaines, IL, Guideline
No. 03732) for mechanical bond. Smooth surfaces are not acceptable, they must be shot
blasted.
3. Repair defective areas such as honeycombs, cracks or other defects with a suitable
repairing or manufacturers' recommended mortar.
4. Treat saw cut and expansion joints as per manufacturers' application guideline.
5. Carefully rinse all the surfaces to be treated with clean water. Leave no standing water.
3.03 INSTALLATION
A. Application of Maxxon DPM: Apply Maxxon DPM material in quantities as per
manufacturers' specifications and recommendations
1. Apply in one coat for moisture vapor emission rate (MVER) up to 20 lbs/24 hrs *
1000 SF (<4.0 g/hr/m 2 ).
2. Apply in two coats for moisture vapor emission rate (MVER) 20 to 25 lbs/24 hrs * 1000
SF (4.0 to 5.0 g/hr/m 2 ) or surfaces that are extra rough and porous. Broadcast sand
between coats as described under item 4.
3. Apply using roller or squeegee to the still moist substrate, and carefully scrub it into the
pores with a long handled scrub brush. Follow with a roller to achieve a uniform
coverage.
4. Broadcast clean, dry, fresh water washed and dried #20 silica sand (0.5 to 1.0 mm) to
“rejection” (full broadcast) or at a rate of 30 lbs/100 SF (1.5 kg/m 2 ) into the fresh
Maxxon DPM where a 2 nd coat or Maxxon Underlayment top coating follows.
B. Underlayment Application: Follow manufacturers' recommendations for priming and
pouring Maxxon Underlayment over Maxxon DPM. Maxxon Underlayments can be
poured from featheredge to various thicknesses following manufacturers' recommendations.
C. Drying: General Contractor shall provide continuous ventilation and adequate heat until
Maxxon Underlayment is dry. General contractor shall provide mechanical ventilation if
necessary.
3.04 PREPARATION FOR INSTALLATION OF GLUE DOWN FLOOR GOODS
A. Floor Goods Procedures: See the Maxxon Corporation's "Procedures for Attaching Finished
Floor Goods to Maxxon Underlayments" brochure for guidelines for installing finished floor
goods. This procedure is not a warranty and is to be used as a guideline only.
3.05 FIELD QUALITY CONTROL
A. Field Samples: At least one set of 3 molded cube samples shall be taken from each day's pour
during the Maxxon Underlayment application. Cubes shall be tested as recommended by the
Maxxon Corporation in accordance with modified ASTM C 109 or ASTM C 472 depending on
type of underlayment. Test results shall be available to architect and/or contractor upon request
from applicator.
3.06 PROTECTION
A. Protection From Heavy Loads: During construction, place temporary wood planking over
Maxxon Underlayment wherever it will be subject to heavy wheeled or concentrated loads.
END OF SECTION