LEGACY REPORT * Reissued April 1, 2001 ICC Evaluation Service, Inc. www.icc-es.org Business/Regional Office # 5360 Workman Mill Road, Whittier, California 90601 # (562) 699-0543 Regional Office # 900 Montclair Road, Suite A, Birmingham, Alabama 35213 # (205) 599-9800 Regional Office # 4051 West Flossmoor Road, Country Club Hills, Illinois 60478 # (708) 799-2305 Legacy report on the 1997 Uniform Building Code, the 2000 International Building Code and the 2000 International Residential Code DIVISION: 09 FINISHES Section: 09220 Portland Cement Plaster LA HABRA-WALL EXTERIOR WALL COATING AND INSULATION SYSTEM LA HABRA PRODUCTS, INC. 240 SOUTH LOARA STREET ANAHEIM, CALIFORNIA 92803 1.0 SUBJECT La Habra-Wall Exterior Wall Coating and Insulation System. 2.0 DESCRIPTION 2.1 General: The La Habra-Wall Exterior Wall Coating and Insulation System is an exterior wall covering recognized as an alternative to the exterior plaster requirements of Chapter 25 of both the Uniform Building Code (UBC) and the International Building Code (IBC) and Chapter 7 of the International Residential Code. The system is a cementitious wall coating consisting of a proprietary mixture of portland cement, sand, chopped fibers, water and proprietary additives, reinforced with lath and applied to substrates of foam plastic insulation board, gypsum sheathing, fiberboard, plywood or oriented strand board (OSB). The system is installed on exterior walls of wood or steel stud construction, and over walls of concrete masonry or concrete with or without lath. 2.2 Materials: 2.2.1 La Habra-Wall Exterior Coating: A factory-prepared mixture of Type I or Type II portland cement complying with ASTM C 150, chopped fibers, and proprietary additives. The mixture is packaged in 80-pound (36.3 kg) bags. Four and one-half to six gallons (17 to 22.7 L) of water and 200 to 240 pounds (90.7 to 108.9 kg) of sand are added to each 80- pound (36.3 kg) bag in the field, and mixed in accordance with the manufacturer s recommendations. The finished product may also be provided in premixed 80-pound (36.3 kg) bags, which is mixed in the field with 1.3 to 1.5 gallons (4.92 to 5.67 L) of water per bag. Optional color may be added in the field in accordance with the manufacturer s instructions. 2.2.2 Sand: Sand must be clean and free from deleterious amounts of loam, clay, silt, soluble salts and organic matter, and must comply with ASTM C 144 or ASTM C 897. 2.2.3 Foam Plastic Insulation Board: 2.2.3.1 Polystyrene: Expanded polystyrene (EPS) or extruded polystyrene (XEPS) insulation boards must have a minimum nominal density of 1.5 pcf (24 kg/m 3 ), a maximum flame-spread rating of 25 and a smoke-developed rating not exceeding 450 when tested in accordance with UBC Standard 8-1 (ASTM E 84), and must comply with ASTM C 578, Type II (EPS) or Type IV (XEPS). The boards must be 1 to 1 1 / 2 inches (25.4 to 38 mm) thick and must have 3 / 8 -inch-high (9.5 mm) tongues with compatible grooves for horizontal joints. See Figure 1 for joint detail. All boards must be recognized in a current ICBO ES evaluation report. See Section 2.8 for board identification. 2.2.3.2 Polyisocyanurate: Polyisocyanurate insulation board must have a nominal density of 2 pcf, a maximum flame-spread rating of 25 and a smoke-developed rating not exceeding 450 when tested in accordance with UBC Standard 8-1 (ASTM E 84), and must comply with ASTM C 1289. The boards must be 1 to 1 1 / 2 inches (25.4 to 38 mm) thick and must have 3 / 8 -inch-high (9.5 mm) tongues with compatible grooves for horizontal joints. See Figure 1 for joint detail. All boards must be recognized in a current ICBO ES evaluation report. See Section 2.8 for board identification. 2.2.4 Fome-Cor Board Lathing Material: Extruded polystyrene board is described in ER-3335. 2.2.5 Lath: 2.2.5.1 Wire Fabric Lath: Wire fabric lath must comply with the ICC-ES Acceptance Criteria for Metal Plaster Bases (Lath) (AC191). Minimum No. 20 gage [0.035 inch (0.89 mm)], 1-inch galvanized steel, woven-wire fabric must be used. Lath must be furred when applied over all substrates except unbacked polystyrene board. Furring must comply with the following requirements: 1. When maximum total coating thickness is 1 / 2 inch (12.7 mm) or less, the body of the lath must be furred a minimum of 1 / 8 inch (3.2 mm) from the substrate after installation. *Revised July 2006 ICC-ES legacy reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, Inc., express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright 2006 Page 1 of 9
Page 2 of 9 2. When total coating thickness is greater than 1 / 2 inch (12.7 mm), No. 17 gage [0.058 inch (1.47 mm)] by 1 1 / 2 -inch (38 mm) woven-wire fabric lath must be used. The body of the lath must be furred a minimum of 1 / 4 inch (6.4 mm) from the substrate after installation. 2.2.5.2 Metal Lath: Metal lath must comply with AC191 and, when applicable, UBC Table 25-B. Furring requirements are as set forth in Section 2.2.5.1. 2.2.6 Gypsum Sheathing Board: Water-resistant core treated gypsum sheathing must comply with ASTM C 79-97. 2.2.7 Fiberboard: Minimum 1 / 2 -inch-thick asphaltimpregnated fiberboard must comply with ANSI/AHA A194.1-1985 as a regular-density sheathing. 2.2.8 Wood Structural Sheathing: 2.2.8.1 Plywood: Minimum 5 / 16 -inch-thick (7.9 mm) plywood with exterior glue, for studs spaced 16 inches (406 mm) on center, and minimum 3 / 8 -inch-thick (9.5 mm) plywood with exterior glue, for studs spaced 24 inches (610 mm) on center. Plywood must comply with UBC Standard 23-2 (DOC PS1). 2.2.8.2 Oriented Strand Board: Oriented strand board (OSB) must be a minimum of 7 / 16 inch (11.1 mm) thick, and must comply with UBC Standard 23-3 (DOC PS2), Exposure 1. 2.2.9 Sealants: Acrylic latex sealant must comply with ASTM C 834. 2.2.10 Weather-resistive Barrier: For installations under the UBC, weather-resistive barriers must be minimum Grade D kraft building paper complying with UBC Standard 14-1 or asphalt-saturated rag felt complying with Underwriters Laboratories Inc. Standard 55A-1983. For installations under the IBC or IRC, the water-resistive barrier must be one layer of No. 15 asphalt felt, complying with ASTM D 226-97a, Type I, except when installation is over wood-based sheathing. A vapor retarder complying with IBC Section 1403.3 and flashing complying with IBC Section 1405.3 or IRC Section R703.8 must be provided. The weather-resistive barrier is required to be installed over all substrates except EPS or XEPS board, in which case the barrier may be behind the board. Application of the barrier must comply with UBC Section 1402.1, IBC Section 1403 or IRC Section 703.2. When the system is applied over any wood-based sheathing and installed in areas enforcing the UBC or IBC, the barrier must be a minimum of two layers of Grade D building paper complying with UBC Standard 14-1 as set forth in UBC Section 2506.4 or IBC Section 2510.6, or one layer of EPS or XEPS insulation board described in Section 2.2.3.1 of this report over one layer of Grade D building paper having a minimum water-resistance rating of 60 minutes. Where Pyro-Kure 600 is specified in Section 2.5.2 of this report, it is a Grade A weather-resistive barrier complying with UBC Standard 14-1, and has a flame-spread rating of 25 or less and a smoke-developed rating of 450 or less when tested in accordance with UBC Standard 8-1. 2.2.11 Miscellaneous: All trim, screeds, and corner reinforcement must be either corrosion-resistant metal or approved plastic. 2.2.12 Flashing: 2.2.12.1 Membrane Flashing: Self-adhering, flexible rubberized asphalt and polyethylene composite material, 0.030 inch (0.76 mm) thick, shingle-lapped over the weatherresistive barrier. 2.2.12.2 Rigid Flashing: Corrosion-resistant metal or approved plastic must extend beyond the surface of the exterior wall. 2.3 Installation: 2.3.1 General: The exterior cementitious coating is applied by hand troweling or machine spraying in one or two coats to a minimum 3 / 8 -inch (9.5 mm) thickness. At openings and penetrations of the system, the coating must be backed by solid supports and must have a minimum nominal thickness of 3 / 8 inch (9.5 mm). The lath must be embedded in the minimum coating thickness, and cannot be exposed. Fasteners for lath must penetrate a minimum of 1 inch (25.4 mm) into wood studs. When installation is over plywood or OSB substrates, staples are permitted to penetrate into sheathing and framing a minimum of 1 inch (25.4 mm). See Tables 1 and 2 for fastener spacing. The coating must be applied at ambient air temperatures between 40/F and 120/F (4.4/C and 49/C) by contractors approved by La Habra Products. Provisions must be made to keep the stucco system above 40/F (4.4/C) before, during, and for 48 hours after, each application. The second cementitious coat, if provided, must be applied within seven days of the first coat. If the second coat is not installed within seven days, a bonding adhesive complying with Military Specification MIL-B-19235 must be brushed or sprayed on the base coat or added to the finish coat mix prior to application. See Figures 1 through 10 for typical installation details. The weather-resistive barrier must be applied as set forth in Section 2.2.10. Flashing, corner reinforcement, metal trim and weep screeds must be installed as shown in the attached details. In addition, weep screeds must comply with and be installed in accordance with UBC Section 2506.5, IBC Section 2512.1.2 or IRC Section R703.8. Weep screeds must be located a minimum of 4 inches (102 mm) above grade and must allow trapped water to drain to the building exterior. Wall bracing must comply with UBC Section 2320.11.3, IBC Section 2308.9.3 or IRC Section 602.10. An installation card, such as shown in Figure 12, must be on the jobsite and must bear the name of the contractor and the product to be used before any weather-resistive barrier or exterior sheathing is installed. Also see Section 4.6 of this report. 2.3.2 Application over Open Framing: 2.3.2.1 General: The weather-resistive barrier is placed over open wood or steel studs spaced a maximum of 24 inches (610 mm) on center for EPS and XEPS, and over polyisocyanurate foam plastic attached to open wood framing. Parapet and square corners must be covered with metal corner reinforcement. Metal corner reinforcement is optional for round wall and parapet corners when they are constructed in accordance with Figure 6 of this report. 2.3.2.2 Application over Foam Plastic Insulation Board: The boards described in Section 2.2.3 are placed horizontally, with tongues faced upward, and are temporarily held in place with galvanized staples or roofing nails, on wood framing, and with self-tapping screws, on metal framing. Vertical butt joints must be staggered a minimum of one stud space from adjacent courses, and must occur directly over studs. The lath is applied tightly over the insulation board and fastened through the board to wood studs, either using No. 11 [0.148-inch (3.75 mm) shank diameter, 0.438-inch (11.1 mm) head diameter] galvanized roofing nails spaced at 6 inches (152 mm) on center, maximum, along supports or using galvanized staples described in Table 1. Staples must have
Page 3 of 9 a minimum crown width of 7 / 16 inch (11.1 mm). Care must be taken to avoid overdriving fasteners. The La Habra-Wall Coating System may also be applied over minimum No. 20 gage [minimum 0.0359-inch (0.91 mm) base-metal thickness] steel studs spaced a maximum of 24 inches (610 mm) on center. Lath is applied tightly over the insulation board and fastened through the board and weatherresistive barrier to the metal studs using minimum No. 8, 1 1 / 4 - inch-long (31.7 mm), corrosion-resistant panhead screws at 6 inches (152 mm) on center. The screws must be self-drilling and self-tapping, and must penetrate the stud a minimum of 1 / 4 inch (6.4 mm). The lath is applied with 1 1 / 2 -inch (38 mm) end and side laps. Square wall corners and parapet corners are covered with metal corner reinforcement. Galvanized metal, 1 3 / 8 -inch (35 mm), J-shaped trim pieces are installed at other areas where foam is exposed. At windows and doors, butting J-trim metal edges must be caulked. Holes for hose bibbs, electrical panels, and other penetrations of substrate surfaces, except those caused by fasteners, must also be caulked. The coating is then applied as described in Section 2.3.1. 2.3.2.3 Application over Fome-Cor Board Lathing Material: The Fome-Cor Board Lathing Material is attached to wood framing spaced a maximum of 24 inches (610 mm) on center in accordance with Sections 2.2 and 2.3 of ER- 3335. Minimum 1 1 / 2 -inch (38 mm) by No. 17 gage woven-wire fabric lath is attached through the Fome-Cor Board Lathing Material using No. 11 gage nails spaced at 6 inches (152 mm) on center, maximum, or using galvanized staples described in Table 1 of this report. The La Habra-Wall coating is then applied to a minimum 1 / 2 -inch-thick (12.7 mm) base coat. A minimum 1 / 8 -inch-thick (3.2 mm) finish coat follows, resulting in a 5 / 8 -inch (15.9 mm) minimum overall thickness. The base coat must be cured in accordance with Section 2.3.1 prior to finish coat application. Other installation details are described in Sections 2.3.2.1 and 2.3.2.2. 2.3.3 Application over Solid Backing: 2.3.3.1 Fiberboard: Minimum 1 / 2 -inch-thick (12.7 mm) fiberboard sheathing described in Section 2.2.7 is installed directly over wood or steel studs spaced a maximum of 24 inches (610 mm) on center. The fiberboard is temporarily held in place with corrosion-resistant staples, roofing nails or selftapping screws. A weather-resistive barrier described in Section 2.2.10 is applied over the fiberboard prior to application of the lath. Self-furring or furred lath is secured to the framing through the weather-resistive barrier and sheathing using the fasteners and spacing described for lath over foam plastic insulation boards in Section 2.3.2.2 of this report. See Section 2.2.5 for lath description. Exposed sheathing edges are protected with galvanized metal flashing. Holes in the substrate surface must be caulked, and the coating must be applied as described in Section 2.3.1. 2.3.3.2 Gypsum Sheathing: Minimum 1 / 2 -inch-thick (12.7 mm) gypsum sheathing described in Section 2.2.6 is installed, in a manner similar to that for fiberboard, directly to wood or steel studs spaced a maximum of 24 inches (610 mm) on center. The gypsum sheathing is fastened to wood framing using minimum 1 1 / 2 -inch-long (38 mm), No. 11 gage [0.148- inch-diameter (3.8 mm)] galvanized roofing nails or No. 16 gage [0.0625-inch-diameter (1.59 mm) shaft] galvanized staples spaced a maximum of 6 inches (152 mm) on center at edges and intermediate supports. For steel framing, the sheathing must be attached to minimum No. 20 gage [0.0359- inch (0.912 mm) base-metal thickness] steel studs using No. 8 panhead screws spaced at 6 inches (152 mm) on center. The screws must be self-tapping and self-drilling, and must penetrate the framing a minimum of 1 / 4 inch (6.4 mm). A weather-resistive barrier, described in Section 2.2.10 of this report, must be applied over the gypsum sheathing. The lath and coating are installed as described in Sections 2.3.1 and 2.3.2 of this report. Foam plastic insulation installed prior to lath installation must be a minimum of 1 / 2 inch (12.7 mm) in thickness. 2.3.3.3 Plywood: Plywood described in Section 2.2.8.1 of this report is applied directly to wood or steel studs under conditions set forth in Section 2.2.8.1 and in UBC Table 23- IV-D-1, IBC Table 2308.9.3(3), or IRC Table R602.3(3). The plywood must be attached to framing in accordance with the code. Nails must penetrate a minimum of 1 inch (25.4 mm) into framing. When fastening to wood framing using galvanized staples, the staples must be minimum No. 16 gage [0.0625-inch (1.59 mm) shaft diameter] and must be spaced in accordance with Table 2 of this report. Staples must penetrate 1 inch (25.4 mm) into framing. Application of the stucco system is as set forth for fiberboard in Section 2.3.3.1 of this report. 2.3.3.4 Oriented Strand Board: OSB described in Section 2.2.8.2 is applied directly to wood or steel framing in the same manner as described for plywood in Section 2.3.3.3. Application of the stucco system, including weather-resistive barrier, lath and coating, is as set forth for fiberboard in Section 2.3.3.1. Foam plastic insulation boards installed prior to lath installation must be a minimum of 1 / 2 inch (12.7 mm) in thickness. 2.3.3.5 Concrete or Masonry: When applied directly to concrete or concrete masonry surfaces, surfaces must be clean, free of dust or other particles and sufficiently damp to ensure a proper bond. The stucco is applied directly to the prepared surface at a minimum thickness of 3 / 8 inch (9.5 mm) in accordance with applicable provisions of Section 2.3.1. When applied with lath, vertical wood-furring strips must be attached to the wall at 24 inches (610 mm) on center, maximum. The top and bottom of each wall must have horizontal furring strips. Wood furring must be fastened with concrete nails recognized in a current ICBO ES evaluation report, at 16 inches (406 mm) on center, with a minimum 1- inch (25.4 mm) penetration into the concrete or masonry. Wood furring strips must be a minimum of 1 inch (25.4 mm) thick to allow for 1-inch (25.4 mm) penetration of fasteners for lath. The insulation boards and lath must then be applied as set forth in Section 2.3.2. The coating must be applied in accordance with Section 2.3.1. 2.4 One-hour Fire-resistive Wall Assemblies: 2.4.1 First Assembly (Limited Load-bearing): 2.4.1.1 Interior Face: One layer of either 5 / 8 -inch-thick (15.9 mm) Type X gypsum wallboard complying with ASTM C 36-97, water-resistant core gypsum backerboard complying with ASTM C 630-97, or gypsum veneer base complying with ASTM C 588-92 is applied horizontally to the interior face of 2-by-4 wood studs spaced a maximum of 24 inches (610 mm) on center. The gypsum board is attached using 1 7 / 8 -inch-long (48 mm), 1 / 4 -inch-diameter-head (6.4 mm), 6d coated nails at 7 inches (178 mm) on center to studs, plates and blocking. Nails must penetrate framing a minimum of 1 inch (25.4 mm). All wallboard joints must be backed with minimum 2-by-4 wood framing, and taped and treated with joint compound. Fastener heads must also be treated with joint compound. 2.4.1.2 Exterior Face: One layer of 48-inch-wide (1219 mm), minimum 5 / 8 -inch-thick (15.9 mm), Type X gypsum sheathing, described in Section 2.2.5, is applied parallel to studs using 1 3 / 4 -inch-long (44.5 mm), No. 11 gage [0.148-inch (3.8 mm) shaft diameter] galvanized roofing nails having 7 / 16 - inch- or 1 / 2 -inch-diameter (11.1 mm or 12.7 mm) heads, spaced at 4 inches on center at board edges and 7 inches
Page 4 of 9 (178 mm) on center at intermediate studs and top and bottom plates. Nails must penetrate framing a minimum of 1 inch (25.4 mm). A weather-resistive barrier is required over the sheathing in accordance with Section 2.2.10 of this report. The lath and wall coating are then applied as described in Section 2.3.1. No foam plastic is permitted in this assembly. 2.4.1.3 Axial Load Design: The design axial load stress is limited to 0.78 FN c per stud and the maximum stress must not exceed 0.78 FN c per stud at a maximum l e /d ratio of 33 as calculated in accordance with UBC Chapter 23, Division III, or IBC Section 2306 or IRC Section R602.3. 2.4.2 Second Assembly (Limited Load-bearing): 2.4.2.1 Interior Face: One layer of 5 / 8 -inch-thick (15.9 mm), Type X gypsum wallboard, complying with ASTM C 36, is applied horizontally to the interior face of 2-by-4 wood studs spaced a maximum of 16 inches (406 mm) on center. The wallboard is fastened with 1 5 / 8 -inch-long (41.3 mm), 5d gypsum wallboard nails having a minimum 0.086-inch (2.18 mm) shank diameter and a 1 5 / 64 -inch-diameter (23.8 mm) head, and spaced at 6 inches (152 mm) on center to studs, plates and blocking. All wallboard joints must be backed by minimum 2-by-4 wood framing and taped and treated with joint compound. Fastener heads must also be treated with joint compound. 2.4.2.2 Exterior Face: Minimum 3 5 / 8 -inch-thick (92 mm), paper-faced R-13 mineral wool batt insulation, having a 1.94 pcf (31 kg/m 3 ) density, must be installed in the wall cavity. A weather-resistive barrier described in Section 2.2.10 of this report is applied over the exterior face of framing in accordance with UBC Section 1402.1, IBC Section 1404.2 or IRC Section 703.2, followed by 1-inch-thick (25.4 mm), 1.5- pcf-density (24 kg/m 3 ) EPS board applied in accordance with Section 2.3.2 of this report. The lath is then applied horizontally and attached in accordance with Section 2.3.2, except that 2 1 / 2 -inch-long (63.5 mm), No. 11 gage nails having a 3 / 8 -inch-diameter (9.5 mm) head must be used. The lath requires 2-inch (51 mm) overlaps. The La Habra-Wall coating is then applied, to a minimum 3 / 8 -inch (9.5 mm) thickness, in accordance with Section 2.3.2. 2.4.2.3 Axial Load Design: The allowable axial loading for this system is limited by the following, whichever is least: 1,100 pounds (499 kg) per stud. Design stress based on 0.78 FN c per stud in accordancewith UBC Chapter 23, Division III; IBC Section 2306; or IRC Section R602.3. Design stress of 0.78 FN c per stud at a maximum l e /d ratio of 33. A maximum of 46 percent of the load calculated in accordance with UBC Chapter 23, Division III; IBC Section 2306; or IRC Section R602.3. 2.4.3 Third Assembly (Limited Load-bearing): 2.4.3.1 Interior Face: One layer of 5 / 8 -inch-thick (15.9 mm) Type X gypsum wallboard, complying with ASTM C 36, is attached horizontally to the interior face of minimum 2-by-4 wood studs spaced a maximum of 24 inches (610 mm) on center. The wallboard is attached to framing using 1 5 / 8 -inch-long (41.3 mm) cupped-head gypsum wallboard nails [0.30-inch-diameter (7.62 mm) head, 0.010-inch-diameter (0.254 mm) shank] spaced a maximum of 8 inches (203 mm) on center. Wallboard joints must be backed by minimum 2-by-4 wood framing and covered with paper tape and gypsum compound. Fastener heads must be treated with joint compound. 2.4.3.2 Exterior Face: Any of the following substrates may be used independently or in combination with each other: One layer of minimum 1 / 2 -inch-thick (12.7 mm) water-resistant core gypsum sheathing. One layer of minimum 7 / 16 -inch-thick (11.1 mm) OSB. One layer of minimum 15 / 32 -inch-thick (11.9 mm) plywood. The substrates must be as described in Section 2.2.6 or 2.2.8 of this report, and must be installed on wood framing as described in Section 2.3.3. The weather-resistive barrier must be installed over the sheathing in accordance with Section 2.2.10. The lath and wall coating must be applied as described in Sections 2.3.1 and 2.3.3. No foam plastic is permitted in this assembly. 2.4.3.3 Axial Load Design: The allowable axial loading for this system is limited by the following, whichever is least: 1,100 pounds (499 kg) per stud. Design stress based on 0.78 FN c per stud in accordance with UBC Chapter 23, Division III; IBC Section 2306; or IRC Section R602.3. Design stress of 0.78 FN c per stud at a maximum l e /d ratio of 33. A maximum of 46 percent of the load calculated in accordance with UBC Chapter 23, Division III; IBC Section 2306; or IRC Section R602.3. 2.5 Noncombustible Construction: The La Habra-Wall system may be installed on walls required to be of noncombustible construction, such as concrete or concrete masonry unit walls, or on noncombustible metal-framed walls, when constructed in accordance with Section 2.5.1 or Section 2.5.2 of this report. 2.5.1 System 1: The La Habra-Wall coating system is applied over gypsum sheathing substrates on steel framing. No foam plastic insulation is permitted. 2.5.2 System 2: The La Habra-Wall coating system is applied to EPS foam plastic insulation board attached to gypsum sheathing substrates on steel framing in accordance with Sections 2.5.2.1 through 2.5.2.6 of this report. Foam plastic insulation boards are installed as described in Section 2.5.2.6. 2.5.2.1 Interior Finish: One layer of 5 / 8 -inch-thick (15.9 mm), Type X gypsum wallboard complying with ASTM C 36-92 is applied vertically to steel framing with all edges blocked. The wallboard is fastened to framing using No. 8 by 1 1 / 4 -inch-long (31.7 mm) buglehead screws fastened to board joints at 8 inches (203 mm) on center and to intermediate locations at 12 inches (305 mm) on center. All joints are taped and treated with joint compound. Intermediate fasteners are treated with compound. 2.5.2.2 Steel Framing: Minimum 3 5 / 8 -inch-deep (92 mm), minimum No. 20 gage [0.0359-inch (0.91 mm) base-metal thickness] steel studs spaced a maximum of 16 inches (406 mm) on center. 2.5.2.3 Openings: Wall openings must be framed with minimum 3 5 / 8 -inch-deep (92 mm), No. 20 gage [0.0359-inch (0.91 mm) base-metal thickness] steel framing. 2.5.2.4 Stud Cavity: R-11 fiberglass or rockwool batt, a minimum of 3 5 / 8 inches (92 mm) thick, sized to friction-fit between studs. Where studs continue past floor levels, stud cavities at each floor level must be blocked with Thermafiber insulation. The Thermafiber insulation (ICBO ES ER-2331) is fit into each stud cavity at the floor. The insulation has a minimum nominal 4 pcf density, is 4 inches (102 mm) thick and is approximately 6 to 8 inches (152 to 203 mm) wide.
Page 5 of 9 2.5.2.5 Exterior Finish: One layer of minimum 1 / 2 -inch-thick (12.7 mm) gypsum sheathing is applied horizontally to the steel framing using No. 8 by 1 / 4 -inch-long (31.7 mm) buglehead screws spaced 8 inches (203 mm) on center at all framing locations. 2.5.2.6 Stucco System: One layer of Pyro-Kure 600 vapor retarder described in Section 2.2.10 is applied over the gypsum sheathing substrates. The vapor retarder is installed over the sheathing in accordance with UBC Section 1402.1, IBC Section 1404.2 or IRC Section R703.2. One-inch-thick (25.4 mm) EPS insulation board with a nominal 1.5 pcf density is installed horizontally in running bond over the sheathing. Reinforcement consists of 1-inch (25.4 mm) by No. 20 gage, galvanized steel, self-furring, woven wire-fabric lath. The lath, insulation board, and vapor retarder are positively fastened to the steel framing using 2 1 / 2 -inch-long (63.5 mm), No. 8 waferhead self-drilling screws spaced at 8 inches (203 mm) on center to all framing members. The stucco is applied to a minimum 3 / 8 -inch (9.5 mm) thickness in accordance with Section 2.3 of this report. 2.6 Shear Wall: 2.6.1 General: A shear wall providing wall bracing required by UBC Section 2320.11.3 IBC Section 2308.9.3 and IRC Section R602.10 may be constructed using the La Habra-Wall system. Wall framing is minimum 2-by-4 studs having a minimum specific gravity of 0.42, spaced 16 or 24 inches (406 or 610 mm) on center. Fome-Cor Board Lathing Material recognized in ER-3335 is applied to framing with 3-inch (76 mm) horizontal weatherlaps and 6-inch (152 mm) vertical laps, and is spot-fastened into place. The 1 1 / 2 -inch-hexagonal-opening (38 mm), No. 17 gage, woven-wire lath is then applied over the Fome-Cor Board Lathing Material and is fastened to all framing members at 6 inches (152 mm) on center using No. 16 gage corrosion-resistant staples having a 1-inch (25.4 mm) crown. The staple legs must be a minimum of 1 1 / 4 inches (31.7 mm) long, and must be long enough to penetrate framing at least 1 inch (25.4 mm). The lath is overlapped a minimum of 3 inches (76 mm). Lath overlaps should be offset from Fome-Cor board overlaps. The La Habra-Wall coating is applied in two coats in accordance with Section 2.3.1. The base coat is 1 / 2 inch (12.7 mm) thick, minimum, and is cured in accordance with Section 2.7.3. The finish coat is 1 / 8 inch (6.4 mm), minimum,and is applied after proper curing of the base coat. 2.6.2 Shear Values: The allowable stress design racking shear value is 165 lbf/foot (2408 N/m) based on a maximum height-to-length ratio of 1:1. In UBC Seismic Zones 3 and 4, and IBC Seismic Design Category D, the allowable shear racking value is limited to 95 lbf/foot (1386 N/m). Use of the assembly for resisting shear forces is not permitted in IBC Seismic Design Categories E and F. For normal loading the allowable shear racking value is limited to 124 lbf/foot (1806N/m). 2.7 Miscellaneous: 2.7.1 Inspection Requirements: Building department inspection is required on lath installation prior to application of the coating, as noted in UBC Section 108.5.5, IBC Section 109.3.5 or IRC Section R109. 2.7.2 Control Joints: Control joints must be installed as specified by the architect, designer, builder, or exterior coating manufacturer, in that order. In the absence of other details, control joints must be located in accordance with the requirements of Sections 7.11.4.1 through 7.11.4.4 of ASTM C 1063. 2.7.3 Curing: Moisture curing by lightly fogging the finished wall with water is required for a minimum of 48 hours after coating application. The fogging must occur as often and as long as necessary to ensure cement hydration. 2.7.4 Soffits: The system may be applied to soffits, provided the coating is applied over metal lath complying with UBC Table 25-B or ASTM C 847 in lieu of wire fabric lath. Metal lath fastening must comply with UBC Table 25-C, ASTM C1063-98 (for installation under the IBC) or IRC Section 703.6.1, except the fastener length must be increased by the thickness of any substrate. 2.7.5 Sills: The system may be applied to sills at locations such as windows and other similar areas. Sills having depths of 6 inches (152 mm) or less may have the coating and lath applied to any substrate permitted in this report, provided the coating, lath, weather-resistive barrier and substrate are installed in accordance with the applicable section(s) of this report. Sills having depths exceeding 6 inches (152 mm) must have substrates of solid wood or plywood. The substrate is fastened in accordance with UBC Table 23-II-B-1, IBC Table 2394.9.1 or IRC Table 602.3(1), and a double layer of Grade D weather-resistive barrier is applied over the substrate. The coating, lath and optional foam plastic insulation board are applied in accordance with Section 2.3.2 of this report. 2.8 Identification: The factory-prepared mix is delivered to the jobsite in water-resistant bags with labels bearing the following information: 1. The name and address of the manufacturer, and the evaluation report number (ICBO ES ). 2. Identification of the product. 3. Weight of the packaged mix. 4. Storage instructions. 5. Maximum amount of water and sand that may be added, and conditions that must be considered in determining the actual amounts added. 6. Curing instructions. Each foam plastic insulation board is to be identified in accordance with its respective ICBO ES evaluation report. Additionally, the board density must be noted. When EPS is applied to walls required to be of noncombustible construction, each board must be identified along one edge, and one board in each package must be identified on both faces, with the foam plastic evaluation report number, the La Habra-Wall name, and the evaluation report number (ICBO ES ). Fome-Cor Board Lathing Material is identified in accordance with ER-3335. 3.0 EVIDENCE SUBMITTED Data in accordance with the ICBO ES Acceptance Criteria for Cementitious Exterior Wall Coatings (AC11), dated January 2001, and NFPA 268; and tests for use on noncombustible walls in accordance with UBC Standard 26-4, UBC Section 2602.5.2.2, and IBC Section 2603.5. 4.0 FINDINGS That the La Habra-Wall exterior wall coating and insulation system described in this report complies with the 1997 Uniform Building Code, the 2000 International Building Code and the 2000 International Residential Code, subject to the following conditions: 4.1 The materials and methods of installation comply with this report and the manufacturer s instructions.
Page 6 of 9 4.2 Installation is by contractors approved by the manufacturer. 4.3 The system may be installed on walls required to be of noncombustible construction, when constructed in accordance with Section 2.5. Other systems described in this report are confined to Type V construction. 4.4 The system is recognized as a one-hour fire-resistive assembly when complying with Section 2.4 of this report. 4.5 The interior of the building is separated from the foam plastic insulation board with a thermal barrier complying with UBC Section 2602, IBC Section 2603.4 or IRC Section R318.1.2, such as 1 / 2 -inch (25.4 mm) regular gypsum wallboard applied in accordance with the applicable code. 4.6 An installation card, like that shown in Figure 12, is left at the jobsite for the owner and a copy is filed with the building department. 4.7 When installation is in accordance with this report, the allowable wind load for the system installed over wood or steel studs spaced a maximum of 24 inches on center is 32 psf (1532 Pa). Systems installed over steel studs using No. 17 gage by 1 1 / 2 -inch (38 mm) woven-wire fabric lath, or 3.4-pound-per-square-yard (1.29 kg/m 2 ) metal lath, have a 50 psf (2394 Pa) allowable wind load. Support framing must be adequate to resist the required wind load. This report is subject to re-examination in two years. TABLE 1 STAPLE SPACING 1 FOR APPLICATION OF LATH (inches) OPEN FRAMING 2 WOOD SPECIES MINIMUM SPECIFIC 16 GAGE 15 GAGE 14 GAGE 13 GAGE 12 GAGE GRAVITY Douglas fir larch 0.5 6 6 6 6 6 Douglas fir South 0.46 5 5 6 6 6 Western hemlock 0.47 5 6 6 6 6 Western hemlock South 0.47 5 6 6 6 6 Hem-fir South 0.46 5 5 6 6 6 Hem-fir 0.43 4 4 5 6 6 Spruce-pine-fir 0.42 4 4 5 5 6 Western 0.36 3 3 3 4 4 For SI: 1 inch = 25.4 mm. 1 Perimeter and intermediate spacing. 2 The length of the staple legs shall be such that the minimum penetration of the legs into the framing is 1 inch. TABLE 2 MINIMUM 16 GAGE STAPLE SPACING 1 (inches) FOR APPLICATION OF PLYWOOD AND OSB 2 TO WOOD STUDS WOOD SPECIES MINIMUM SPECIFIC GRAVITY 3 / 8 -INCH-THICK PLYWOOD 15 / 32 -INCH-THICK PLYWOOD 7 / 16 -INCH-THICK OSB Douglas fir larch 0.5 5 4 4 Douglas fir South 0.46 5 4 4 Western hemlock 0.47 5 4 4 Western hemlock South 0.47 5 4 4 Hem-fir South 0.46 5 4 4 Hem-fir 0.43 4 4 4 Spruce-pine-fir 0.42 4 4 4 Western 0.36 3 3 3 For SI: 1 inch = 25.4 mm. 1 Perimeter and intermediate spacing. 2 For lath attachment, the length of the staple legs shall be such that the minimum penetration of the legs into the wood-based sheathing and framing is 1 inch. 3 For wood-based sheathing attachment, the length of the staple legs shall be such that the minimum penetration into the framing is 1 inch.
Page 7 of 9 FIGURE 1 COMPRESSION FIT-METAL FRAME FIGURE 2 SLIDING DOOR FIGURE 3 SILL FLASHING FIGURE 4 WOOD SOFFIT DETAIL
Page 8 of 9 FIGURE 5 PARAPET AND FLASHING DETAIL FIGURE 6 BUTTERFLY CORNER FIGURE 7 PLASTER GROUND FIGURE 8 PLANT ON FIGURE 9 SQUARE CORNER-BULLNOSE CORNER FIGURE 10 GABLE OR DECK FLASHING
Page 9 of 9 FIGURE 11 TONGUE AND GROOVE FIGURE 12 INSTALLATION CARD
LEGACY REPORT SUPPLEMENT 1 Reissued April 1, 2001 ICC Evaluation Service, Inc. www.icc-es.org Business/Regional Office # 5360 Workman Mill Road, Whittier, California 90601 # (562) 699-0543 Regional Office # 900 Montclair Road, Suite A, Birmingham, Alabama 35213 # (205) 599-9800 Regional Office # 4051 West Flossmoor Road, Country Club Hills, Illinois 60478 # (708) 799-2305 Legacy report on the 1997 Uniform Building Code, the 2000 International Building Code and the 2000 International Residential Code DIVISION: 09 FINISHES Section: 09220 Portland Cement Plaster LA HABRA-WALL EXTERIOR WALL COATING AND INSULATION SYSTEM LA HABRA PRODUCTS, INC. 240 SOUTH LOARA STREET ANAHEIM, CALIFORNIA 92802 1.0 SUBJECT La Habra-Wall Exterior Wall Coating and Insulation System. (Issued April 1, 2001.) 2.0 DESCRIPTION 2.1 No change. 2.2 Materials: 2.2.1 through 2.2.4: No change. 2.2.5 Lath: 2.2.5.1 No change. 2.2.5.2 Replace existing section with the following: Metal Lath: Metal lath must comply with UBC Table 25-B or ASTM C 847-95. Metal lath shall be minimum 1.75 pounds per square yard (0.95 kg/m 2 ). Furring and self-furring requirements for metal lath shall be as stated for wire fabric lath in Section 2.2.5.1. 2.2.6 through 2.2.12: No change. 2.3 through 2.12: No change. 3.0 EVIDENCE SUBMITTED No change. 4.0 FINDINGS That the changes noted herein comply with the 1997 Uniform Building Code, the 2000 International Building Code and the 2000 International Residential Code, subject to the following conditions: 4.1 to 4.7: No change. Unless specifically noted in this evaluation report supplement, the master report remains valid and unchanged. This report expires concurrently with the master report dated April 1, 2001. ICC-ES legacy reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, Inc., express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright 2006 Page 1 of 1
LEGACY REPORT SUPPLEMENT 2 Reissued April 1, 2001 ICC Evaluation Service, Inc. www.icc-es.org Business/Regional Office # 5360 Workman Mill Road, Whittier, California 90601 # (562) 699-0543 Regional Office # 900 Montclair Road, Suite A, Birmingham, Alabama 35213 # (205) 599-9800 Regional Office # 4051 West Flossmoor Road, Country Club Hills, Illinois 60478 # (708) 799-2305 Legacy report on the 1997 Uniform Building Code, the 2000 International Building Code and the 2000 International Residential Code DIVISION: 09 FINISHES Section: 09220 Portland Cement Plaster LA HABRA-WALL AND PAREX 210 EXTERIOR WALL COATING AND INSULATION SYSTEMS LA HABRA PRODUCTS, INC. 240 SOUTH LOARA STREET ANAHEIM, CALIFORNIA 92803 PAREX, INC. POST OFFICE BOX 189 REDAN, GEORGIA 30074 1.0 SUBJECT La Habra-Wall and Parex 210 Exterior Wall Coating and Insulation Systems. (Issued July 1, 2002.) 1. Add Parex, Inc., as an additional listee. 2. Add the product designation Parex 210. 3. Revise Figure 12 to include the Parex, Inc., name and the Parex 210 product name. 2.0 DESCRIPTION 2.1 General: Add the following at the end of this section: Parex 210 is identical to the La Habra-Wall coating, and all references in this report to the La Habra-Wall coating materials also apply to Parex 210. 2.2 through 2.7: No change. 2.8 Identification: Revise Item 1 as follows: 1. The name and address of the manufacturer (La Habra Products, Inc., or Parex, Inc.), and the evaluation report number (ICBO ES ). Revise the third sentence of the last paragraph as follows: When EPS is applied to walls required to be of noncombustible construction, each board must be identified along one edge, and one board in each package must be identified on both faces, with the foam plastic evaluation report number, the La Habra-Wall or Parex 210 name, and the evaluation report number (ICBO ES ). 3.0 EVIDENCE SUBMITTED No change. 4.0 FINDINGS That the changes noted herein comply with the 1997 Uniform Building Code, the 2000 International Building Code and the 2000 International Residential Code, subject to the following conditions: 4.1 through 4.7: No change. Unless specifically noted in this evaluation report supplement, the master report remains valid and unchanged. This report expires concurrently with the master report dated April 1, 2001. ICC-ES legacy reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, Inc., express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright 2006 Page 1 of 2
Page 2 of 2 FIGURE 12 INSTALLATION CARD