Cement board stucco exterior wall system details and specifications

Cement board stucco exterior wall system details and specifications




Facades Cement Board Stucco System

Facades MonoLith™ System offers a low cost, impact resistant, easy maintenance stucco alternative for residential and light commercial applications. It incorporates the desired aspects of traditional stucco into a modern, light- weight exterior with excellent drainage capacity.
MonoLith™ works well with steel or wood framing which can be either load bearing or non-load bearing. MonoLith™ allows for unlimited design options when used with aesthetic EPS shapes, and three dimensional effects can be created with ease.
MonoLith™ is unique, combining the high quality of Facades brand coatings and finishes with National Gypsum’s PermaBase® cement board.






1 cement board stucco exterior wall system details- cut through2 cement board stucco exterior wall system details- starter detail3 cement board stucco exterior wall system details- optional starter detail4 cement board stucco exterior wall system details- expansion joint at intermideate floor level5 cement board stucco exterior wall system details- nail flange window head6 cement board stucco exterior wall system details- nail flange window sill7 cement board stucco exterior wall system details- nail flange window jamb8 cement board stucco exterior wall system details- inside and outside corners9 cement board stucco exterior wall system details- wood frame deck conection10 cement board stucco exterior wall system detail- diverter flashing detail11 cement board stucco exterior wall system details- door head12 cement board stucco exterior wall system details- door jamb13 cement board stucco exterior wall system details- parapet and coping

INTRO

An air barrier Cement board stucco exterior wall system minimizes the risk of condensation within the building envelope. It does this by eliminating mass transfer of warm moisture air into the wall assembly to a cold surface where it can condense. A complete air barrier Cement board stucco exterior wall system has individual air barrier parts. Including the connections between them. The air barrier parts must be continuous.  Then it is an effective air barrier Cement board stucco exterior wall system. You must take material compatibility and construction sequencing into account. Only then can an air tight assembly ensure long term durability. Also Consider the effects of air tightness on mechanical ventilation.

This doc contains the specifications for this Cement board stucco exterior wall system. These specifications follow a 3 part format.

TAILOR OUR specifications

These specifications cover all the ways of using the Cement board stucco exterior wall system. Projects use combinations of these materials and methods. To tailor the specifications to your project use those sections which apply. Place certain parts of the specification in other parts of the project’s total specification. The project design pros are responsible for ensuring that the project specifications are suitable. This specification is to be used with Cement board stucco exterior wall system detail drawings and product data sheets etc. For assistance in preparing your specification contact us.

UNITS

English Units are included in parentheses after the Standard International (SI) equivalents. The conversions represent commonly used equivalents.

WARNING

An air barrier should not be confused with a vapor retarder. A retarder may  be used in the wall assembly to retard water vapor diffusion. Also to reduce the risk of condensation.  A vapor retarder is placed on the warm side of the wall.  It is placed on the interior side in cold climates. A vapor retarder may not be necessary. It depends on the wall components. Also the range of temps and humidity conditions. As well as the mechanical ventilation. A vapor retarder should not be used in warm humid climates.

DISCLAIMER

Info in this specification is to standard detail and product recommendations for the install of the Cement board stucco exterior wall system.  It is presented in good faith.  We assume no liability to the architecture, engineering or workmanship. To insure that you are using the latest most complete info contact us.

PART I – GENERAL

1.01 SUMMARY

This doc contains all the our requirements for the proper design, use, and install. Use over vertical above grade concrete, masonry, and cement board. It is intended to be used with typical details and application instructions. Project design parameters may require special details or specifications. The project design pro should prepare this.

A. This SECTION INCLUDES.

1.  A Eifs or plaster Cement board stucco exterior wall system.

B. The sections that are related to this one are.

1. Unit Masonry which can be found in Section 042000.

2. Concrete Sections which can be found in 03300 and 034000.

3. Light Gauge Cold Formed Steel Framing Section 054000.

4. Wood Framing which can be found in Section 061000.

5. Sheathing  Section 061600.

6. Water Barriers which can be found in Section 072500.

7.Vapor Retarders witch can be found in Section 072600.

8. Membrane Roofing witch can be found in Section 075000.

9. Flashing and Sheet Metal witch can be found in Section 076000.

10. Joint Protection witch can be found in Section 079000.

11. Windows Section witch can be found in 085000.

12. Cement Board.

1.02. REFERENCES

A. ASTM B117. Witch is the Federal Test Standard.

141A Method 6061 which is the Test Method of Salt Spray Fog Testing.

B. ASTM C79 witch is the specification for Gypsum Sheathing Board.

C. ASTM C150 witch is the specification for Portland Cement.

D. ASTM C297 witch is the Test Method for Tensile Strength of Flat Sandwich Constructions in Flatwise Plane.

E. ASTM D968 which is the Federal Test Standard 141A Method 6191. Test Method for Abrasion Resistance of Organic Coatings by Falling Abrasive.

F. ASTM E84 witch is the Test Method for Surface Burning Characteristics of Building Materials.

G. ASTM E108 witch is the Modified Method for Fire Tests of Roof Coverings.

H. ASTM E330 which is the Test Method for Structural Performance of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.

I. ASTM G23 which is the Federal Test Standard 141A Method 6151. Recommended Practice for Operating Exposure Apparatus. (Carbon-Arc Type) With and Without Water, for Exposure of Nonmetallic Materials.

J. ASTM C926-98a witch is the Standard specification for Application of Portland Cement Based Plaster.

K. ASTM C1063-99 witch is the Standard specification for Install of Lathing and Furring to Receive Interior and Exterior Portland Cement Based Plaster.

L. ASTM C847-95 witch is the Standard specification for Metal Lath.

M. C933-96a witch is the Standard specification for Welded Wire Lath.

N. ASTM C1032-96 witch is the Standard specification for Woven Wire Plaster Base.

O. Our Cement board stucco exterior wall system Install Details.

P. Our Cleaning and Recoating info.

Q. Our Expansion Joints and Sealants info.

R. Our Water Vapor Transmission. (FS0111).

S. Our Cement board stucco exterior wall system Application Info. (FS0514).

T. Mil Std E5272 which is for Environmental Testing.

U. Mil Std 810B. Environmental Test Methods  which is for (mildew resistance)..

V. ULC S101 which is for Standard Methods of Fire Endurance Tests of Building Construction Materials.

1.03 DEFINITIONS

A. Building Expansion Joint. A joint through the building structure. It is designed to accommodate structural movement.

B. Contractor. The contractor that installs this Cement board stucco exterior wall system.

C. Expansion Joint. A discontinuity in the Cement board stucco exterior wall system.

D. Facades. the manufacturer of the Cement board stucco exterior wall system.

E. Finish. An acrylic based coating. It is applied to the outside surface of the brown coat.

F. Reinforcement. Expanded metal lath or woven wire mesh. Its used to reinforce the brown coat.

G. Scratch Brown Coat. Polymer modified portland cement based  fiber enhanced plaster. Its used to embed the reinforcement.

H. Sheathing. A substrate in sheet form.

I. Substrate. The material to which the Cement board stucco exterior wall system is affixed.

J. Substrate Cement board stucco exterior wall system. The total wall assembly including the attached substrate.

K. Cement board. Cement Board.

1.4 Cement board stucco exterior wall system DESCRIPTION

A. MonoLith™ cement board Cement board stucco exterior wall system.
Exterior cement board installed over a code approved secondary weather resistive  barrier and approved drainage medium. Its coated by  Base Coat with embeded reinforcing mesh at joints. It then coated with and finish coat.  For testing  information and product data on the substrate, cement board, and  secondary weather barrier. Refer to the manufacturer. Unless the secondary weather barrier is manufactured by us.

B. Method of Install. This Cement board stucco exterior wall system is applied to the substrate.

  1. Design Requirements.

1. Acceptable Substrates for this Cement board stucco exterior wall system are.

  1. Unglazed brick, cement plaster, concrete, or masonry.

b. Gypsum sheathing meeting ASTM C1396.

c. Silicone treated gypsum sheathing surfaced with inorganic fiberglass mats meeting ASTM C1177.

d. Exterior fiber reinforced cement and calcium silicate boards meeting ASTM C1235.

e. APA Exterior or Exposure 1 rated Plywood Grade C D or better. 13 mm (1/2 in), minimum 4 ply.

f. APA Exposure 1 rated OSB. nominal 13 mm (1/2 in).

  1. Deflection of substrate systems shall not exceed L/240.
  2. The slope of inclined surfaces shall not be less than 6:12.
  3. The length of inclined surfaces (EPS shapes) shall not exceed 305 mm (12 in).
    1. Expansion Joints.
      1. Location of expansion joints is the responsibility of the project designer. It shall be noted on the project drawings. Expansion joints shall be placed at the following locations.

1)  Where expansion joints are in the substrate.

2)  Where building expansion joints are.

3)  At floor lines.

4)  Where this Cement board stucco exterior wall system abuts dissimilar materials.

5)  Where the substrate changes.

6)  In continuous elevations at intervals less than 144 ft2 (13 m2) of  surface area.

7)  Where structural movement occurs. The max uncontrolled length or width is 5.5 lineal meters (18 lineal feet). Max uncontrolled length to ratio of 2 ½.

8)  It is the responsibility of the project design team to determine expansion joint placement.

  1. Terminations.
    1. Shall be held back from adjoining materials a min of 19 mm (3/4 in) for sealant.

b. Terminated a min of 200 mm (8 in) above finished grade.

c. Sealants.

1)  Supplied by others.

2)  Compatible with the Cement board stucco exterior wall system materials.

3)  The sealant backer rod shall be of closed cell.

  1. Vapor Retarders. Use and location of vapor retarders is the responsibility of the project designer. It shall be noted on the project drawings and specifications.
  2. The use of dark colors must be considered in relation to wall surface temp.  Use of dark colors in high temp climates can affect the performance of the Cement board stucco exterior wall system.

D. Performance Requirements.

  1. This Cement board stucco exterior wall system shall have been tested for durability as follows.

a. Abrasion Resistance. ASTM D968 (Federal Test Standard 141A Method 6191). no deleterious effects after 500 liters (132 gal).

  1. Accelerated Weathering. ASTM G23 (Federal Test Standard 141A Method 6151) 2000 hours.  No deterioration.

c. Mildew Resistance. Mil Std 810B. passes.

d. Salt Spray Resistance. ASTM B117 (Federal Test Standard 141A Method 6061) 5%. Concentration for 300 hours. No deleterious effect.

  1. Fire performance.
    1. Flame Spread ASTM E84. When tested individually the adhesives and coatings shall have a Flame Spread index not exceeding 20.  A Smoke Developed index not exceeding 10.

 

1.5 SUBMITTALS.

A. Product Data. The Contractor shall submit Manufacturer’s product data sheets describing products which will be used.

B. Samples. The Contractor shall submit two samples of this Cement board stucco exterior wall system for each finish, texture and color to be used. The same tools and techniques for the actual install shall be used. Samples shall be of  size to represent each color and texture.

  1. The applicator shall submit schedules  and detail drawings. The drawings shall show details and other items as required. Then a proper evaluation can be made.

D. Test Reports. When requested  the Contractor shall submit selected test reports. They must verify the performance of this Cement board stucco exterior wall system.

1.6 QUALITY ASSURANCE.

A. Qualifications.

  1. Cement board stucco exterior wall system Manufacturer. Shall be Facades. All materials shall be manufactured or sold by us. All shall be purchased from us or its  distributor.
    1. Materials shall be manufactured at a facility covered by a current ISO. 9001:2000 certification. Certification of the facility shall be done by a registrar accredited by the American National Standards Institute. Registrar Accreditation Board (ANSI-RAB).
    2. Contractor. Shall be knowledgeable in the proper install of the Cement board stucco exterior wall system. They shall be experienced in the install of Stucco Systems. They shall possess a  trained certificate from us.

B. Certifications.

  1. This Cement board stucco exterior wall system shall be approved for use by building code authorities.
    1. Mock Up.
    2. The Contractor shall provide a mock up for approval.
    3. The mock up shall be the size required to represent the products being installed. Also include each color and texture to be used.
  2. Use the same equipment and techniques as the actual application. The finish used shall be from the same batch as that being used.
  3. The approved mock up shall be available at the job site.

1.7 STORAGE AND HANDLING

A. All materials shall be delivered to the job site in the original, unopened packages.

  1. Upon arrival. Materials shall be inspected for physical damage, freezing, or overheating.  Questionable materials shall not be used.
  2. Materials shall be stored at the jobsite. Store in a cool, dry location, out of sunlight. Protected from weather and other damage.  Min storage temp shall be 7°C (45 °F) for Coatings and Primers. 10 °C (50 °F) for other wet products. Minimize exposure of materials to temps over 32 °C (90 °F). Finishes exposed to temps over 43 °C (110 °F) for even short periods may exhibit skinning. Increased viscosity and should be inspected prior to use.

1.8 PROJECT CONDITIONS.

A. Environmental Requirements.

1. Application shall not take place during inclement weather. Protect materials from inclement weather.

2. Application of wet materials shall be at a min temp of 4 °C (40 °F), 7 °C(45 °F) or 10 °C (50 °F) depending on product and rising. Maintain for a min of 24 hours or until completely dry.

B. Existing Conditions.

  1. The Contractor shall have access to power and water. The are shall be clean.

1.9 SEQUENCING AND SCHEDULING

    1. Install of this Cement board stucco exterior wall system shall be coordinated with other trades.
    2. Sufficient manpower and equipment shall be used for continuous operation.

1.10 LIMITED MATERIALS WARRANTY

A. We shall provide a limited warranty against defective material upon written request. We make no other warranties. We dont warrant workmanship. Full details are available.

1.11 SIGN RESPONSIBILITY.

A. It is the responsibility of both the specifier and the purchaser to determine if a product is suitable for their intended use. The designer shall be responsible for design, detail, structural capability, attachment details, shop drawings and the like.  We have prepared guidelines in the form of specifications, application details and product data sheets to help the design process only.  We are not liable for any errors in design, detail, structural capability, attachment details, shop drawings, or the like. Whether based upon the info prepared by  us or otherwise. As well as changes which may have been made to our published comments.

1.12 MAINTENANCE

  1. Maintenance and repair shall follow procedures noted in this Cement board stucco exterior wall system Application Instructions. (FS0514)B. All products are designed to minimize maintenance. Some cleaning may be required.
    1. Sealants and flashings should be inspected regularly. Make repairs as necessary.

PART II -PRODUCTS

2.1 MANUFACTURING

A. All components shall be obtained from us or our distributors.

2.2 MATERIALS

A. Weather Resistive Barrier . Not a component of the Facades finish Cement board stucco exterior wall system except for WaterGuardTM Cement board stucco exterior wall system.

1. Water Stop TM  Fill. A fully formulated water based material. It is applied over approved substrates to provide water resistance and air barrier properties.

2. Water Guard TM Mesh Tape. A 100 mm (4 in) wide  open weave fiberglass mesh tape. It is used to reinforce sheathing joints. Also reinforces exposed edges of sheathing.

3. Other code approved weather resistive barrier. If selected by others is not a component of the MonoLith™ Cement board stucco exterior wall system.

B. Exterior Cement Board.

1. Shall be PermaBASE® brand cement board or equal.

C. Fasteners.

1. Shall be corrosion resistant steel screws.

D. Base Coat

1.Our Base Coat A liquid polymer based material. It is field mixed in a 1:1 ratio by weight with Portland Cement.

2.Our Dry Base Coat. A dry blend cementitious  polymer based product. It is field mixed with  water.

E. Reinforcing Mesh.

Shall be a balanced open weave glass fiber fabric. It shall be treated for compatibility with other Cement board stucco exterior wall system materials.

  1. MonoMesh™: Required at all exterior cement board joints, openings, and corners.
  2. RM100: Must wrap any EPS shapes. It can be installed over the entire face of the wall for additional impact resistance.

F. Finish. Shall be the type, color and texture as selected. It shall be one or more of the following.

1. Our Acrylic Finish. A Water based  acrylic coating with integral color and texture. Its formulated with dirt pickup resistance. It comes in one of 5 textures.

a. SandFloatTM: Medium sand texture.

b. PebbleFloatTM: Coarse pebbe texture.

c. QuartzTexTM: Coarse swirl texture.

d. Fine QuartzTexTM: Medium swirl texture.

e. FreeStylus: Fine or varied texture.

3. Our Elastomeric Finish. A Water based  elastomeric acrylic finishes with integral color and texture. It is formulated with dirt pickup resistance . It comes in one of 5 textures:

a. SandFloatTM: Medium sand texture.

b. PebbleFloatTM: Coarse pebbe texture.

c. QuartzTexTM: Coarse swirl texture.

d. Fine QuartzTexTM: Medium swirl texture.

e. FreeStylus: Fine or varied texture.

G. Expanded polystyrene.  Shall be 1 pcf nominal density.  EPS must meet our specification.

H. Our Starter Track™.  A vinal track with weep holes for installation at the bottom of the Cement board stucco exterior wall system.

I. Accessories (by others) are not components of this Cement board stucco exterior wall system.

1. Type, style and manufacturer shall be on construction documents.

2. In corrosive environments accessories manufactured of PVC or zinc are recommended.

3. Steel accessories shall meet ASTM C 841.

4. PVC accessories shall meet ASTM D 1784 and C 1063.

2.3 COMPONENTS

A. Adhesives. Used to adhere the EPS shapes to the Base Coat.

  1. . A liquid polymer based material which is field mixed with Portland cement. Used over non wood based substrates.
    1. Shall be Base Coat.
    2. Ready mixed. A dry blend cementitious, copolymer based product. It is field mixed with water. Its used over non wood based substrates.
      1. Dry Mix Base Coat.

B. Trim. Expanded polystyrene meeting Facades Specification. Supplied by an EPS board supplier licensed by Facades.

  1. Base Coat. Shall be compatible with the EPS architectural shapes and reinforcing mesh.
  2. Cementitious. A liquid polymer based material. It is field mixed with Portland cement.
    1. Base Coat/Adhesive.
    2. Non cementitious. A factory mixed fully formulated water based product.
      1. Ready mixed. A dry blend cementitious copolymer based product field mixed with water.
        1. Dry Mix Base Coat

D. Meshes. Shall be a balanced open weave glass fiber fabric. It shall be treated for compatibility with other Cement board stucco exterior wall system materials. It shall be available in the following weights. It shall provide the indicated min tensile strengths:

1. RM100: 152 g/m2.

(4.5 oz/yd2); 27 g/cm

(150 lbs/in).

2. RM100x: 203 g/m2.

(6 oz/yd2); 36 g/cm

(200 lbs/in).

3. RM310:407 g/m2.

(12 oz/yd2); 54 g/cm

(300 lbs/in).

4. RM109: 146 g/m2 (4.3 oz/yd2);

27 g/cm

(150 lbs/in).

E. Admix. A modified acrylic binder.

F. Finishes. Shall be the type, color and texture as selected by the architect. It shall be one or more of the following.

  1. Acrylic finish. (water-based, acrylic coatings with integral color and texture).

A QuartzTex™: Swirl texture.

b. Fine QuartzTex™: Fine swirl texture.

c. FreeStylus™: Fine or varied texture.

d. PebbleFloat™: Pebble tex- ture.

E SandFloat™: Sand texture.

2 Elastomeric Finish. water based acrylic coating.

a QuartzTex E™: Swirl texture.

b. Fine QuartzTex E™: Fine swirl texture.

c. Freestylus E™: Fine or var- ied texture.

d. PebbleFloat E™: Pebble texture.

E SandFloat E™: Sand texture.

  1. Specialty Finishes: Factory mixed, water-based acrylic.
    1. Coatings Shall be water based, acrylic coating with integral color and or texture and be one of the following.
    2. Acrylic Paint: Non textured.
      1. Elastomeric Paint: Non textured.

elastomeric coating.

  1. BellaCoat™ T: Textured elastomeric coating.
    1. Primers and Sealers.
    2. Primer: A water based acrylic primer.
    3. Sealer: Clear acrylic sealer.

2.4 ACCESSORIES

A. Secondary Moisture Protection Barrier. A secondary weather barrier must be installed over sheathed substrates. It must be wrapped into rough openings prior to install.

1. Acceptable Secondary Moisture Protection Barriers include. Tyvek® StuccoWrap™ and equals that comply with local building codes. Other code approved asphalt saturated papers are also acceptable. Trowel or roller applied weather barriers can be used if a layer of polymeric weather resistive barrier is applied over it.

  1. Install the Secondary Moisture Protection Barrier over the substrate. Install it according to specifications and code requirements.
  2. The Secondary Moisture Protection Barrier shall be free of any damage. It must be applied to all surfaces.
  3. Wrap the Secondary Moisture Protection Barrier into rough openings. Do this to increase the level of moisture protection to the building frame and interior.
  4. Coordinate work with other trades.

PART III – EXECUTION

3.1 EXAMINATION

A. Prior to install of this Cement board stucco exterior wall system ensure that the substrate.

  1. Is of a type listed in Section 1.04.C.1.
    1. Is flat within 6.4 mm (1/4 in) in 1.2 m (4 ft) radius.
  2. Is sound, dry. Connections are tight. Has no conditions that may interfere with this Cement board stucco exterior wall system install.

B. The contractor shall notify the GC of all discrepancies.

  1. Prior to the install of this Cement board stucco exterior wall system. All needed waterproofing details shall have been completed.

3.2 SURFACE PREPARATION

A. The substrate shall be free of foreign materials.

3.3 INSTALL

1. WaterStopTM Fill. Due to shipping and storage  there may be settling of materials.  Prior to using, mix the material to a smooth consistency.

2. Our base coat materials shall be mixed in accordance with our Product Data Sheets.

a. Our wet Base Coat. Shall be mixed in a 1:1 ratio with Portland cement.  The mix is allowed to set for 5 minutes. Then remixed to break the set.  See  product data sheet for complete instructions.

b. Our Dry Base Coat. Shall be mixed with water to a uniform consistency. Then allowed to set for 10 minutes and then remixed to break the set.  Refer to product data sheet for complete instructions.

3.  Finishes.

a. Our Finishes are factory blended and require no additives.  Mix each pail to a uniform consistency adding a small amount of water as needed.  Ensure that the same amount of water is added to each pail.

b. Refer to the product literature for the specific finish being used for more complete instructions.

B. Application of WaterStopTM Fill.

1. Prepare the substrate sheathing so as to be free of foreign materials.

2. Refer to WaterGuardTM Cement board stucco exterior wall system literature for complete instructions.

C. Install the exterior cement board in accordance with manufacturer’s instructions.

1. Align sheathing joints with any spacers. Install fasteners through the spacers as needed.

2. Do not align joints with corners of wall penetrations.

3. Exterior cement board joints shall be offset from sheathing board joints.

D. Foam shape application.

1. Adhere EPS shape to cement board prior to applying the base coat.

2. Install in accordance with current Commercial EIFS Cement board stucco exterior wall system Install Instructions.

E. Application of Base Coat.

1. Apply Base Coat over all cement board joints and corners. Embed Mesh  into the wet base coat mixture.

2. Allow the base coat  to dry 24 hours.

3. Apply a continuous layer of  Base Coat over the exterior cement board face so that the entire cement board is covered.  The base coat shall be applied to a uniform thickness of approximately 1.6 mm (1/16 in).

F. Application of Finishes.

1. Allow the base coat to cure a min of 24 hours.

2. Ensure that the cement board is clean and dry.

3. Finishes may be spray or trowel applied.

4. Always apply the finish to a natural break.

5.  Avoid application in direct sunlight.

6. Finishes shall be applied in accordance with our instructions for the specific finish being used.  Refer to the published product data sheet for the specified finish.

3.4 FIELD QUALITY CONTROL

A. The Contractor is responsible for the proper application.

B. We assume no responsibility for application of  products.

  1. If required, the Contractor shall certify in writing the quality of work performed. It will be relative to the substrate Cement board stucco exterior wall system, details, install procedures, workmanship and products used.

D. If required, the EPS supplier shall certify in writing that the EPS meets our specifications.

E. If required, the sealant Contractor shall certify in writing that the sealant application is in accordance with the sealant manufacturer’s recommendations.

3.5 CLEANING

A. All excess materials shall be removed from the job site. It will be done in accordance with applicable law.

B. All areas where this Cement board stucco exterior wall system has been installed shall be left free of debris.

3.6 PROTECTION

A. This Cement board stucco exterior wall system shall be protected from damage.