Multi-Tex Stucco System ® Instruction Sheet

A Durable, Fire Retardant, Weather Resistant Exterior Stucco System


DESCRIPTION AND USE
The MULTICOAT MULTI-TEX STUCCO SYSTEM ® consists of high build flexible acrylic emulsion applied to a special non-combustible lightweight autoclaved cementitious pre-primed wall board. It forms a cost-effective, durable weather-resistant exterior stucco finished (primed) wall, installed on wood or steel frame, residential or commercial structures.

ADVANTAGES

  • Replaces Sheet Panel
  • Flexible
  • High Impact and Abrasion Resistance
  • Resists Moisture Penetration and Formation of Fungus and Mildew
  • Resistant to Salt Spray, Freeze/Thaw, and Most Chemicals
  • UV Resistant
  • Easy to Install
  • Multiple Finishes - Smooth - Medium - Rough
  • Multiple Color Choice
  • Waterbase Stucco Emulsion - Environmentally Safe

SEE TEST DATA

SURFACE PREPARATION
Pre-primed fibercement board must be structurally sound, and surface must be free from grease, oil, paint, dirt, dust, sealers, laitence, and other foreign materials that may PREVENT PROPER BONDING. Proper expansion joints should be installed according to applicable local building codes. (Recommended: Approximately every 16 feet when wall has no openings.)
NOTE: A moisture barrier or house wrap may be necessary in some applications. Check local building codes.

APPLICATION
STEP 1:
Install pre-primed fibercement wall board panels on existing structure using galvanized nails (wood) or self-tapping ceramic coated screws (steel), 6" centers. Leave minimum 1/8" space between panels (refer to diagrams below). Caulk all joints with polyurethane caulk. Allow caulk to thoroughly cure. Tape all caulked joints with Multicoat elastomeric 3" joint tape. Use 6" tape on all corners (refer to diagrams below).

STEP 2: Clean wall board with water-dampened sponge. Leave slightly damp. Immediately apply Multicoat STUCCO MIX directly to wall board with trowel or sprayer, and finish to desired texture. (A skim coat may be necessary over joints when substrate is not level.)

NOTE: Smooth texture requires a minimum two coats, troweled finish. See COVERAGE. (Additional coat(s) may necessary to properly hide joints.)

U.S. Patents No. 5,732,520 & No. 6,516,580

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PROPERLY ATTACH PRIMED FIBERCEMENT BOARD TO STRUCTURE (LEAVE MIN. 1/8" GAP BETWEEN PANELS)

 

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CAULK ALL JOINTS WITH POLYURETHANE CAULK (ALLOW TO CURE).

 

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APPLY MULTICOAT ELASTOMERIC JOINT TAPE TO CORNERS AND JOINTS

 

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APPLY MULTICOAT STUCCO MIX TO WALL BOARD TO DESIRED TEXTURE

COVERAGE
Stucco Textures - Each 5-gallon pail of STUCCO MIX will cover approximately 80-125 sq. ft., depending on texture.

Smooth Texture - Each 5-gallon pail of STUCCO MIX will cover approximately 150-175 sq. ft., two coats..

(All coverages may vary depending on application methods.)

APPLICATION LIMITATIONS
Do not apply if wall board surface temperature is below 50°F, or over 100°F. Do not apply if ambient temperature is less than 50°F and falling, over 100°F and rising, or if precipitation or extreme high humidity is expected within a 12-hour period.

PACKAGING AND STORAGE
PRIMED FIBERCEMENT WALL BOARD - 4' wide X 8, 9 or 10 ft. lengths
STANDARD THICKNESS - 5/16" - Special Order 1/4" and 7/16"
MULTICOAT STUCCO MIX - 5-Gal. Pails
MULTICOAT ELASTOMERIC JOINT TAPE - 3" & 6" widths 100 ft. rolls
POLYURETHANE CAULK - Tubes
Store at 40-90°F. Shelf life approximately 9 months.

WARRANTY
Materials are guaranteed with respect to uniformity and quality within manufacturers’ specifications. Seller makes no other warranty, expressed or implied, regarding the use of its products. Since use of the product is beyond the Seller’s control, the Buyer assumes all risks of use. Seller’s sole obligation shall be to replace material if found to be defective. Seller shall not be liable for any damages, injury, loss, direct or indirect or consequential, resulting from use of its products.


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MAXIPANEL meets or exceeds ASTM C 1186-91 Standard Specification for Flat Non-Asbestos Fiber-Cement Sheets

ICBO/ES Report #5139 SBCCI Report #9556
Thicknesses: 1/4", 5/16" & 7/16" Thermal Resistance: R=0.17
Installed Weight: Shrinking: Ambient to oven-dry: 0.06%
      1/4" thick 1.9 lbs/sq.ft. Swelling of Thickness
    5/16" thick 2.4 lbs/sq.ft.    (after 7 days of full saturation): 0.2%
    7/16" thick 3.3 lbs/sq.ft. Flame Spread: 0
Density: 86 lbs/cu.ft. Smoke Density 0
Bending Strength: Wind Pressures: See Table I on MaxiPanel brochure
    Transversal:
     Longitudinal:
2,000 psi
2,500 psi
Shear Values: See Table II on MaxiPanel brochure
TEST DATA: STUCCO MIX
TEST METHOD RESULTS
2000 Hour Weatherometer ASTM G-23 No marked evidence of surface cracking, blistering, flaking, chalking, crazing or any other deleterious effects observed
Moisture Resistance ASTM D2247 No blistering or cracking of surface
Freeze-Thaw Section VI D of acceptance criteria for EIFS No change in color, no cracks, no crazing, no delamination
Abrasion Test (falling sand) ASTM DE968-A Initial wear started at 3200 liters
Fungus Mil-Std-810-B (method 508) Passed
Moisture Vapor Transmission ASTM E96 4.56 Perms, the coating is not a vapor barrier

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