SECTION 04 26 16 - ADHERED MASONRY VENEER



SECTION 04 26 16 - ADHERED MASONRY VENEER

GENERAL

1. SECTION INCLUDES

A. ADHERED MASONRY VENEER UNITS.

B. Installation Materials.

2. RELATED REQUIREMENTS

C. 04 20 00 - UNIT MASONRY: FOR ADDITIONAL MASONRY SYSTEMS.

D. 07 21 00 - Thermal Insulation: for insulation components of masonry systems.

E. 07 25 26 - Air and Water Resistant Barriers: for components of masonry systems.

F. 07 62 00 - Sheet Metal Flashing and Trim: for sheet metal components of masonry systems.

G. 07 92 00 - Joint Sealers.

H. 09 96 53 - Elastomeric Coatings: used over unit masonry systems.

3. ADMINISTRATIVE REQUIREMENTS

I. PREINSTALLATION MEETING: CONVENE ONE WEEK BEFORE STARTING WORK OF THIS SECTION IN ACCORDANCE WITH SECTION 01 30 00 - ADMINISTRATIVE REQUIREMENTS.

1. Review preparation and installation procedures and coordinating and scheduling required with related work.

4. SUBMITTALS

J. QUALIFICATION DATA: FOR INSTALLER.

K. Product Data: Provide product criteria, characteristics, accessories, jointing and seaming methods, and termination conditions.

1. Provide data for masonry units, cement board, mortar, grout, sealers, expanded metal lath.

2. Include material properties and test reports substantiating compliance with project requirements.

3. Size Variation Data: For masonry units.

L. Shop Drawings: Indicate required flashings, control joints, and expansion joints, sealing at openings, projections, and penetrations.

1. Masonry Units: Show sizes, profiles, coursing, and locations of special shapes.

2. Stone Trim Units: Show sizes, profiles, and locations of each stone trim unit required.

3. Fabricated Flashing: Detail corner units, end-dam units, and other special applications.

M. Sample: Full units to illustrate range of color and texture.

1. Adhered masonry units.

2. Mortar.

N. Sample Panel: Based on approved samples.

1. Provide one panel for each combination of unit color, bond pattern, and mortar color.

2. Configure to represent all wall elements.

3. Size: 2 feet x 4 feet.

4. Show color range, texture range, mortar color, joint tooling, bond pattern, cleaning, and quality of workmanship.

5. Apply sealer to the sample panels.

6. Maintain sample panels on site as example of level of quality and details for remainder of work.

7. If the sample panel is not included in the actual masonry work; demolish and remove from site after the masonry work for the project has been accepted.

O. LEED Submittals: For components of this section submit the following in compliance with Section 01 35 15 - LEED Certification Procedures.

1. MR 4: Product data for products having recycled content.

2. MR 5: Product certificates for products and materials complying with regional material requirements.

P. Manufacturer's Installation Instructions: Indicate special preparation of substrate, installation and attachment methods for cementitious materials and accessories.

Q. Maintenance Data: For users operation and maintenance of system including:

1. Methods for maintaining system's materials and finishes.

2. Precautions about cleaning materials and methods that could be detrimental to components, finishes, and performance.

5. QUALITY ASSURANCE

R. INSTALLER QUALIFICATIONS: COMPANY SPECIALIZING IN PERFORMING THE WORK OF THIS SECTION WITH MINIMUM OF 5 YEARS EXPERIENCE.

1. Certified member in good standing with the Washington State Conference of Mason Contractors (WSCMC) or Mason Contractors Association of Oregon (MCAO).

6. MOCK-UP

S. ENCLOSURE VISUAL MOCK-UP:

1. Construct and participate in Enclosure Visual Mock-up specified in Section _____________.

T. Enclosure Performance Mock-up:

1. Construct and participate in Enclosure Performance Mock-up and testing specified in Section ________________.

7. DELIVERY, STORAGE, AND HANDLING

U. DELIVER, STORE, AND HANDLE MATERIAL TO AVOID CHIPPING, BREAKAGE, AND CONTACT WITH SOIL OR CONTAMINATING MATERIALS.

V. Do not ship facing units to site until Architect approves sample panel.

W. Store masonry units in accordance with ASTM C90.

X. Store moisture sensitive materials in dry, weathertight enclosures.

8. ENVIORNMENTAL CONDITIONS

Y. GENERAL: CONFORM TO ACI 530/530.1 FOR HOT AND COLD WEATHER MASONRY CONSTRUCTION.

Z. Hot Weather:

1. Take the following precautions if masonry is erected when:

a. the ambient air temperature is more than 99 degrees F. (37 degrees C.) in the shade and the relative humidity is less than 50 percent.

b. the ambient air temperature exceeds 90 degrees F. (30 degrees C.) and the wind velocity is more than 8 mph (13 km).

2. Shade masonry materials from direct sunlight; spread mortar beds no more than 4 feet ahead of masonry; set masonry units within one minute of spreading mortar; and after erection, protect masonry from direct exposure to wind and sun for 48 hours.

AA. Cold Weather:

1. Take the following precautions if masonry is erected when:

a. Ambient temperature or mean daily air temperature falls below 40 degrees F. (4 degrees C.)

b. temperature of masonry units is below 40 degrees F. (4 degrees C.)

2. Provide supplemental heat to achieve required ambient temperature of air and materials.

PRODUCTS

1. PERFORMANCE AND DESIGN CRITERIA

A. BLEND MASONRY UNITS TO PRODUCE A UNIFORM APPEARANCE WHEN INSTALLED AND AVOID AN OBSERVABLE BANDING OR LAYERING OF COLORS OR TEXTURES.

B. Conform to TCNA Handbook and NASI A108 Series/A118 Series.

C. Conform to ASTM C1670, Standard Specification for Adhered Manufactured Stone Masonry Veneer.

D. Cladding subgirt and intermittent clips to be designed to withstand design wind loads, cladding weights, seismic loads, and local building code requirements.

2. GENERAL

E. OBTAIN MASONRY UNITS FROM A SINGLE MANUFACTURER FOR EACH TYPE OF UNIT USED.

F. Obtain cementitious materials from a single manufacturer for each type used.

3. ADHERED MASONRY VENEER UNIT MATERIAL

G. COMPLYING WITH ASTM C1670.

H. Size/Thickness: As indicated on Drawings.

I. Texture: ________.

J. Color: _______.

K. Trim Units: As indicated on Drawings.

4. FRAMING

L. CLADDING SUBGIRT SYSTEM

1. Intermittent Fiberglass or Sheet Steel Standoff Clip:

a. Fiberglass standoff clips: glass fiber and thermoset polyester resin. Minimum 3/16-inch thermal spacer thickness for top, base, and webs.

1) Minimum clip size, frequency and attachment to structure as indicated on Drawings.

b. Steel clips to be AZ-50 galvalume coating to conform to A792/A792M or minimum G185 per ASTM A653

1) Minimum gauge, size, and frequency and attachment to structure to be determined as indicated on Drawings.

2. Steel Z-girts: Minimum 1-inch deep, 18 gauge, AZ-50 galvalume to conform to A792/A792M or minimum G185 per ASTM A653

a. Sizing as indicated on Drawings.

5. MORTAR

M. MORTAR FOR THIN BRICK MASONRY UNITS:

1. Rapid curing latex hydraulic mortar system combined with flexible fast-setting latex additive.

N. Scratch Coat Mortars: Scratch coat mortars for application directly to the metal lath.

1. Site Mixed: ASTM C270, Type N or Type S.

2. Preblended: ASTM C1714/C1714M, Type N or Type S.

O. Setting Bed Mortars: Setting bed to be used to adhere the masonry veneer to scratch coat (cannot use type S mortar for adherence of stone veneer to cement board. must use a polymer modified mortar ANSI A118.4 or ANSI A118.15).

1. Prepackaged/Preblended: ASTM C1714/C1714M, ANSI A118.1, ANSI A118.4, or ANSI A118.15.

2. Setting Bed Mortars: Setting bed to be used to adhere the manufactured stone masonry veneer units to cement board:

3. Prepackaged/Preblended: ANSI A118.4 or ANSI A118.15

P. Pointing Mortars: Also referred to as grouting mortars or mortar used to grout mortar joints, are used to fill the joints between individual stone veneer units once the setting bed mortar has sufficiently cured.

1. Site Mixed: ASTM C270, Type N or Type S.

2. Premixed: ASTM C1714/C1714M, Type N or Type S.

6. ACCESSORIES

Q. WATERPROOFING AND CRACK ISOLATION MEMBRANE SYSTEM FOR THIN BRICK MASONRY UNITS.

1. Acceptable products: two component synthetic latex liquid and flexible cement fiber mortar. Used with fiberglass mesh for crack isolation.

R. Drainage Matrix:

1. A 7/16-inch thick extruded polymer matrix of tangled monofilaments. The monofilaments are heat laminated to a moisture resistant filter fabric with a high perm rating on the outer side.

a. Core Material: Extruded Polymer Matrix.

1) Fabric Material: Non-Woven Polypropylene Fiber.

a) Thickness: 7/16-inch.

S. Lath:

1. 2.5 or 3.4 lb/sq. yd., self-furring, diamond-mesh lath complying with ASTM C 847. Fabricate from structural-quality, zinc-coated (galvanized) steel sheet complying with ASTM A 653/A 653M, G90.

2. Woven Wire metal lath, 17 gauge or heavier, compliant with ASTM C1032.

3. Welded wire metal lath complying with ASTM C933.

T. Fasteners at steel stud:

1. Type 304 series stainless steel wafer headed fastener as required to meet minimum penetration requirements of ASTM C1063.

U. Fasteners at wood stud:

1. Hot dipped galvanized nails as required to meet minimum penetration requirements of ASTM C1063.

V. Cementitious Backer Board:

1. ANSI A118.9 and/or ASTM C1325; high density moisture and mold resistant cementitious backer board with glass fiber reinforcing (or reinforced-face).

a. Size: 1/2-inch thick.

1) Edges: Formed smooth. Ends: square cut.

2) Weight: Approximately 3psf for ½ inch thickness.

3) Fasteners:

a) Screws, Type S, Wafer Head, length sufficient to penetrate minimum 1-inch into structure.

b) Fasteners to comply with 1,500 hour salt-spray resistance minimum.

W. Joint Reinforcing Tape for Cementitious Panels:

1. Mesh joint tape as recommended by cementitious board manufacturer.

a. Fiberglass mesh is to be treated, balanced, open weave glass fiber fabric made from twisted multi-end strands, treated, alkali resistant, compatible with chemical bonding system base coat and finish coat, standard type as supplied by insulation/finish manufacturer. Flame spread and smoke development when tested in accordance with ASTM E-84 shall not exceed 5 and 0.

X. Metal Flashing:

1. See Section 07 62 00 - Sheet Metal Flashing and Trim.

Y. Joint Sealers:

1. See Section 07 92 00 - Joint Sealers.

Z. Masonry Unit Sealers:

1. Masonry Sealer: Clear-drying, vertical grade, penetrating water repellent consisting of a concentrated blend of silanes and oligomeric alkoxysiloxanes specifically for use with porous unit masonry. Active content shall be not less than 40 percent. VOC content shall conform to thresholds set forth by all federal, state, and local jurisdictions.

a. Anti-Graffiti Coatings: Clear-drying, spray-applied, water-based silicone emulsion for weatherproofing concrete and graffiti control for block and other porous masonry materials. Active content shall not be less than 6 percent. VOC content shall conform to thresholds set forth by all federal, state, and local jurisdictions.

b. Graffiti Cleaner: Solvent based, multi-surface graffiti remover free of halogenated solvents formulated for masonry substrates.

EXECUTION

1. EXAMINATION

A. VERIFY EXISTING CONDITIONS MEET THE MANUFACTURER'S REQUIREMENTS BEFORE STARTING WORK.

B. Verify that related items provided under other sections are properly sized and located.

C. Verify that built-in items are in proper location, and ready for installation of thin brick masonry or stone veneer units. Ensure that exterior sheathing and air and weather-resistive barriers are installed and transitioned per the project documents prior to erecting masonry units.

D. Inspect related conditions; do not start work in an area until adverse conditions in that area are corrected. Notify Architect immediately if adverse conditions exist.

2. PREPARATION

E. CLEAN SUBSTRATE FREE OF LAITANCE, DUST, DIRT, OIL, ORGANIC MATTER, OR OTHER FOREIGN MATERIALS AND SLIGHTLY ROUGHEN TO PROVIDE A SURFACE TEXTURE WITH A DEPTH OF AT LEAST 1/8 INCH.

F. Ensure that exterior sheathing and weather-resistive air barriers are installed and transitioned per the project documents prior to erecting masonry units.

G. Do not compromise or otherwise harm the continuity of the continuous air and water resistive barrier system specified in Section 07 25 26.

3. INSTALLATION - GENERAL

H. GENERAL: INSTALL ALL MATERIALS IN ACCORDANCE WITH MANUFACTURER'S INSTRUCTIONS BASED ON CONDITIONS PRESENT.

I. Coordinate masonry work with the work of other trades to accommodate built-in items and to avoid cutting and patching. Lay masonry units in the bond pattern per project requirements. Adjust each unit to its final position while mortar is still soft and plastic.

J. Remove clean and re-lay units that have been disturbed after the mortar has stiffened, with fresh mortar. Keep free from mortar and other debris air spaces, cavities, chases, expansion joints, and spaces to be grouted.

4. CLADDING SUBGIRTS AND CEMENT BOARD

K. INSTALL SUBGIRT INTERMITTENT CLIPS AND GIRTS AS DETAILED.

L. Install cement backer board as specified. Locate vertical joints in backer board over furring support. Provide additional supports at control joints. Cut cement board at all control joints.

1. Attach glass fiber reinforced cement board through sheathing to studs, rough side toward exterior. Drive screws flush with face of panel.

M. Prepare cement backer board by filling all cracks and joints over 1/16-inch, and over fasteners, with joint filler compatible with the backer board. Maintain control joints as noted on the drawings.

N. Bed cement backer board joint reinforcing mesh in minimum 1/16-inch bonding material and at cement backer board joints and corners.

O. Install crack isolation and waterproofing membrane per manufacturer’s installation requirements

5. DRAINAGE MATRIX INSTALLATION

P. INSTALL DRAINAGE MATRIX AS REQUIRED BY MANUFACTURER OVER COMPLETED AIR AND WATER RESISTANT BARRIER.

Q. Install drainage matrix continuous from bottom to top. Butt edges of drainage matrix together. Do not overlap.

R. Place matrix over top of back leg of weep screeds and sheet metal flashings. Install matrix tight to casing beads.

6. LATH INSTALLATION

S. INSTALL LATH OVER TOP OF DRAINAGE MATRIX ACCORDING TO ASTM C 1063.

T. Apply lath horizontally, perpendicular to framing, providing continuous lath a minimum of 12-inches beyond inside and outside corners.

7. SCRATCH COAT INSTALLATION

U. FOLLOWING LATH INSTALLATION, APPLY A NOMINAL 1/2-INCH THICK LAYER OF MORTAR TO COMPLY WITH ASTM C926. COMPLETELY EMBED LATH IN MORTAR.

V. When thumbprint hard score surface horizontally to crate mortar scratch coat.

8. ADHERED MASONRY UNITS:

W. INSTALL UNITS IN ACCORDANCE WITH MANUFACTURER'S PRINTED INSTRUCTIONS, TO TCNA HANDBOOK FOR CERAMIC TILE INSTALLATION W244E.

X. Plan work to minimize jobsite cutting. Cut units where required for fitting or for installation of built-in items, using power tools, and leave edges uniform. Do not install units having chipped or cracked edges.

Y. Align faces plumb, level, and true, with uniform joint widths.

Z. Size and portion units for best appearance, with joints arranged neat and symmetrical, free of imperfections detracting from overall appearance.

AA. Cut and fit bricks around penetrations, leaving appropriate consistently-sized annular space per the Drawings. Form corners neatly using pre-formed corner thin brick masonry units. Align wall joints with adjacent brick.

AB. Place thin brick masonry units joints uniform in width, subject to variance in tolerance allowed in brick size. Make joints watertight, without voids, cracks, excess mortar or excess grout.

AC. Sound thin brick masonry units after setting. Replace hollow sounding units.

9. POINTING

AD. PREPARE JOINT SURFACES FOR POINTING WITH MORTAR BY REMOVING DUST AND MORTAR PARTICLES. WHERE SETTING MORTAR WAS REMOVED TO DEPTHS GREATER THAN SURROUNDING AREAS, APPLY POINTING MORTAR IN LAYERS NOT MORE THAN 3/8 INCH DEEP UNTIL A UNIFORM DEPTH IS FORMED.

AE. Point joints by placing and compacting pointing mortar in layers of not more than 3/8 inch deep. Compact each layer thoroughly and allow to it become thumbprint hard before applying next layer.

AF. Tool joints, when pointing mortar is thumbprint hard, with a smooth jointing tool to produce the following joint profile:

1. Joint Profile: Concave.

10. TOLERANCES

AG. MAXIMUM VARIATION FROM UNIT TO ADJACENT UNIT: 1/16-INCH.

AH. Maximum variation from plane of wall: 1/4 inch in 10 feet and 1/2inch in 20 feet or more.

AI. Maximum variation from plumb: 1/4 inch per story non-cumulative; 1/2inch in two stories or more.

AJ. Maximum variation from level coursing: 1/8-inch in 3 feet and 1/4inch in 10 feet; 1/2inch in 30 feet.

AK. Maximum variation of joint thickness: 1/8-inch in 3 feet.

11. ADJUSTING AND CLEANING

AL. REMOVE AND REPLACE MASONRY UNIT OF THE FOLLOWING DESCRIPTION:

1. Broken, chipped, stained, or otherwise damaged masonry units.

2. Defective joints.

3. Masonry units not matching approved samples and mockups.

4. Masonry units not complying with other requirements indicated.

AM. Replace in a manner that results in masonry matching approved samples and mockups, complying with other requirements, and showing no evidence of replacement.

12. CLEANING

AN. CLEAN INSTALLED MASONRY SURFACES IN ACCORDANCE WITH MANUFACTURER'S INSTRUCTIONS, WITH CLEANING SOLUTION AND A NON-METALLIC BRUSH. DO NOT CLEAN UNITS WITH PRODUCTS NOT SPECIFIED IN MANUFACTURER'S INSTRUCTIONS. PROTECT ADJACENT WORK FROM CLEANING SOLUTIONS.

13. PROTECTION

AO. DO NOT APPLY UNIFORM LOADS FOR AT LEAST 12 HOURS OR CONCENTRATED LOADS FOR AT LEAST 72 HOURS AFTER MASONRY IS CONSTRUCTED. PROVIDE TEMPORARY BRACING AS REQUIRED.

END OF SECTION

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download