Product Users Guide
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MOUNTAIN STONE® Products PRODUCT USERS GUIDE Mountain Stone® Products P.O. Box 20308 42102 4301 Industrial Road Bowling Green, KY. 42101 (270) 796-6123 (270) 796-6131 (800) 781-0277 Local Fax Nationwide Product Users Guide 1 STONE TEST RESULTS BY Mountain Stone® Products 4301 Industrial Road Bowling Green, KY. 42101 Product Testing Results The following tests were performed by: ATEC Associates (The American Testing and Engineering Corporation) located in Nashville, Tennessee. Absorption Test- ASTM C-67 Flexural Strength - ATSM C-348 Absorption Percentage Average=3.3% Flexural Strength ( psi) –average - 117 Compressive Strength – ASTM C- 67 Freeze -Thaw - ASTM C- 67-83 Compressive Strength Average = 3260 psi *No noticeable cracking occurred. Thermal Properties Efflorescence Test - ATSM C-67 sec.10 Thickness (inches) = 1.587 *Not efflorescenced Density (pcf) = 63.17 R-factor ** = 1.38 **R factor is based on the thickness in accordance with ASTM C 177-71. Average thickness may vary, which will result in R-factors varying. The insulative quality is equal to 6” of common brick. Other Tests •= Non-combustible stone, showed zero flame spread and no smoke developed. •= Colorfastness: During testing of stone no undesirable change in color was noted. Installation Procedures 1. PREPARING THE SURFACE Due to its light weight, Mountain Stone can be applied to any structurally sound surface, (except Sheet Rock) and needs no special structural foundation alteration or additions. Apply Mountain Stone directly to the surface of concrete, block, brick, and other masonry surfaces only if the surfaces are clean, unpainted, unsealed, and untreated. All other surfaces must be covered with a 2.5# Galvanized Diamond metal lath. Product Users Guide 2 Lath is to be laid horizontally across wall, as you run your hand down the wall, starting at the top, seems smooth. Running your hand upward, starting from the bottom, seems rough, overlap lath 2”. Always work from the bottom to the top when attaching lath. On wood, nailing is to be 6” apart down each stud, using 1-3/4” roofing nails or 1”x 2” staples used with air pressure of 90 lbs. Minimum. Over metal studs or metal buildings (18 gauge min.), use No. 8 self tapping screws to penetrate or on painted masonry surfaces use 1” masonry nails same distance as above. Nailhead may have to have a small washer adapted to help hold mesh. A 15 lb. Felt paper or paper backed lath available from Mountain Stone must be placed under all outside applications except on clean masonry surface. (If applying stone over clean masonry surface, please skip step 1 and go to step 2). 2. APPLYING THE BED COAT OVER LATH Mix thoroughly 1 part Type “S” mortar to 1-1/2 parts clean brick sand (12 gallons). Add clean potable water to achieve a trowelable mixture, use a 12” trowel and spread mixture over metal lath, enough to cover lath approx. 3/8” thick. After drying, this will provide a rigid backing and assure firm bonding on the stone veneer. 3. APPLYING THE STONE Using the same mixture as the bed coat, apply approximately ½” of mortar to back of stone, covering the entire stone. By using gentle pressure, and a slight wiggling action while applying the stone to the bed coat, will assure a good bond. During warm weather, the bed coat may have to be dampened with water to prevent water being drawn too rapidly from the applying mortar. During cold weather, follow all the guidelines set forth by the Construction Masonry Institute concerning cold weather masonry. To keep stones clean, start at top and work down. If corner pieces are used set them first for easy fitting. (Tip: Avoid getting mortar on the face of the stone during installation.) Installation Procedures (continued) 4. Grouting Joints Grouting mixture shall consist of 1 part Type “N” mortar to 2 parts sand, and clean water. This mixture is to be thoroughly mixed to provide a heavy cream like consistency. This mixture is then placed in a grout bag. Fill the bag ½ full, twist the top and hold tight. With slight pressure from the other hand, and twisting from the top, place opening in joint somewhat like using a caulking gun, and fill the joint flush with the stone. Do not get mortar on any other parts of the stone by the joint area. Let mortar set until firm but workable before finishing joint. (It may be necessary to snip the opening of the grout bag to allow for easier dispensing of the mortar.) 5. FINISH JOINT PROCEDURE Product Users Guide 3 When mortar joints become firm, use of a wooden striking tool carved just a little smaller than the joint width may be used. Press gently and smoothly as to fill grout voids and remove excess mortar to desired depth. Note: The mortar should be firm enough not to stain stone. 6. BRUSHING JOINTS This should be done within 2 hours after tooling of joints. The best way is with a clean whisk broom or a plastic bristle brush. Do not use a brush made of metal. Do not let it set over night before tooling and brushing. Do not brush wet mortar, it will smear and leave brush marks. 7. CLEANING Never use acid for cleaning. If mortar dripping occur, use a clean wet sponge immediately to clean. 8. SEALING Sealing is unnecessary and optional on most jobs. Specification Guide Use this specification guide for each Furnish Mountain Stone stone veneer as individual project. And be sure to omit specified on drawings and specified portions not applicable to single projects and installation procedures. actual needs. 1.4 SUBMITTALS 1.1 PRODUCT NAME Submit a 4’x 4’ grouted sample of Mountain Stone so that accepted stone veneer to be Manufactured stone veneer for exterior and used falls within accepted range of sizes, interior wall covering by Mountain Stone. color, texture, and grouted joint style. Type____________Color_______________ Sample shall remain on job until project is completed. 1.2 MANUFACTURER Mountain Stone Products 1.5 MATERIAL COMPOSITION 4301 Industrial Road Stone veneer to be produced of Type 1 Bowling Green, KY. 42101 Portland cement, expanded aggregate, and (270) 796-6123 additives to meet or exceed the following specifications: 1.3 DESCRIPTION OF WORK Water Absorption: 3.3% Compressive Strength: 3,260 psi. + Thermal Conductivity: 1.38 R-Factor Product Users Guide 4 Reinforcement wire-mesh, Galv. 2.5# 1.6 PRODUCT PACKAGING AND Joint color- pure iron oxide colors or HANDLING Mortar Type N. Mountain Stone is packaged on 40x 48 pallets with 24 boxes per pallet. 2.2 METAL LATH Each box contains 10 square feet of the A. WoodFrame Construction: For exterior stone. Corners are 10 lin. feet per box. application cover area with15 lb. felt paper Pallets can be stacked 3 high for easy or paper backed lath available from space saving, storage and inventory Mountain Stone. Joint overlaps require 2” control. on horizontal and vertical joints. 2.5# Boxes weigh approx. 65lbs. each. Galvanized Metal Lath is then nailed every 6” on centers into studs. INSTALLATION MATERIALS 2.1 MATERIALS B. To Masonry: Stone may be applied All equipment and materials are to be directly to masonry wall provided the clean and free of chemicals that may cause walls surface is clean. Sealed masonry or efflorescence. Materials shall conform to: painted surfaces should be sand blasted or Type 1 Portland cement - ASTM C150 covered with metal lath using 1” masonry Sand – ASTM- C-144 nails. Use clean potable water SPECIFICATION GUIDE size of a penny. Grout shall set after C. Metal studs or metal buildings: 2.5# Galv. grouting so that so that when tooled it metal lath is backed with 15 lb. paper, then will not smear and stain stone. secured to the studs or metal high rib with B. Colored Joints: Colors shall be selected no.8 self-tapping metal screws no less than from standard colors available from ¼”penetration into metal. approved manufacturers of iron oxide. 2.3 BONDING MORTARS EXECUTION Use Type “S” mortar with clean brick sand. 3.1 SURFACE CONDITIONS Mixture will be 1-1/2 parts sand and 1 part A. Examine the areas and conditions under Type ”S” mortar. This mixture shall be used which work will be performed. If or covering metal lath and adhering stone problems are found, do not proceed until only. Mixture to be mixed thoroughly and unsatisfactory conditions are corrected. evenly. B. Coordinate with other trades as needed to assure that proper substrate is 2.4 GROUTING MORTARS provided to receive the stone veneer. A. Shall be 1 part Type N Mortar to 1-1/2 C. Condition of surfaces to receive stone to 1-3/4 part clean brick sand. Mixture veneer. to be thin enough to be squeezed easily 1. Verify that surface to receive mortar from a Grout bag with a hole about the setting bed and stone are firm, dry, Product Users Guide 5 and clean, and free from substances 100% coverage of mortar on the back that may not let product bond of each unit. Remove excessive properly. mortar from around the stone. 2. Verify that all electrical – plumbing, 3.3 GROUTING etc., in or behind the stone have been A. Do not begin grouting stone until stones installed before proceeding with are firmly set. installation of the stone work. B. Force the maximum amount of grout into joints using a grout bag filling all gaps and 3.2 INSTALLATION OF STONE VENEER skips. A. Maintain minimum temperature limits 1. Do not permit grout on stone face. on job site and installation practices 2.