stone veneers installation guide Congratulations on purchasing one of the finest stone veneers systems available. Easy to install, barkman stone veneers were created with the do-it-yourselfer in mind. This stone veneer system produces an attractive wall with a natural looking stone texture surface. Equipment Needed Level, chalk line, snips, wheelbarrow, whisk broom or scratch coat rake, gloves and safety glasses Mortar mixer, mixing paddle, 5-gallon bucket, plasters trowel, mason trowel and grout bag Metal or wood jointing tool Hammer or staple gun with compressor Concrete saw with a diamond blade (available at rental stores) 1 1⁄4 galvanized nails construction details Stone Veneer Over Masonry Surface Cross Section Brick, Stucco, Masonry or Concrete Surface must be clean, unpainted and free from dirt and oil. Corrosion-Resistant Metal Lathe Only necessary if surface is unsuitable for good adhesion. Use 2.5 lb. gauge metal lathe or 16 gauge 2"x2" corrosion resistant self-furring stucco mesh. Scratch Coat 2-parts washed sand to 1-part Portland cement or “type S” pre-mixed mortar. Stone Veneer and Grout Stone Veneer Over Framing Surface Cross Section Plywood, Drywall or Rigid Foam Weather Resistant Barrier (2 layers) Corrosion-Resistant Metal Lathe Use 2.5 lb. gauge or 16 gauge 2"x2" corrosion resistant self-furring stucco mesh. Scratch Coat 2-parts washed sand to 1-part Portland cement or “type S” pre-mixed mortar. Stone Veneer and Grout Stone veneers may be applied from bottom to top or top to bottom. Working from top down may help to avoid splashing mortar onto previously applied stone veneers, but working from bottom up is easier. Tight-fitted or dry-stacked (mortarless joints) systems should be installed bottom to top. It is also recommended to add a bonding agent such as Well Bonding Agent (available at you local lumber yard) to the mortar mix (see Installation step 3). Tip: Wet the scratch coat with a brush and water right before applying veneer or dip piece of veneer in water before applying veneer. estimating installation Consult your dealer or contractor to estimate amount of surface preparation materials, mortar mix and stone veneer pieces required. 1 Prepare Wall Brick, stucco, masonry or concrete surfaces require no preparation if wall is clean, unpainted and free from oil and dirt. If surface is unsuitable for good adhesion, go to step 2, otherwise proceed to step 3. For plywood, drywall or rigid foam surfaces, install 2 layers of weather resistant barrier – overlapping material 2" horizontally and 6" vertically. 2 Metal Lathe Install 2.5 lb. gauge metal lathe, overlapping 1" horizontally and 2" vertically. Wrap lathe around corners at least 16". Space galvanized lathe fasteners every 6" vertically (on center) and every 16" horizontally (on center) – penetrating studs at least 1". Make sure lathe cups are facing upwards (lathe should feel rough moving downward and smooth moving upward). If using 16 gauge 2"x2" corrosion resistant self-furring stucco mesh, make sure self-furring crimps are against the wall. Steinbach Office 152 Brandt Street Steinbach, MB R5G 0R2 T (204) 326 3445 or 1 800 461 2278 F (204) 326 5915 [email protected] Winnipeg Office 909 Gateway Road Winnipeg, MB R2K 3L1 T (204) 667 3310 or 1 800 342 2879 F (204) 663 4854 [email protected] Vancouver Office 2104 – 290 Newport Drive Port Moody, BC V3H 5N2 T (778) 689 7670 F (604) 949 0321 [email protected] Calgary Office 813 McCool St Box 1136 Crossfield, AB T0M 0S0 T (403) 946 4630 F (403) 946 4631 [email protected] Minnesota Office 3535 Bluff Drive Jordan, MN 55352-8302 T (800) 461 2278 F (204) 326 5915 [email protected] creating concrete solutions MF21132-0711 Caution: Dry sawing or grinding of concrete products may result in the release of respirable crystalline quartz. Prolonged exposure to respirable crystalline quartz may cause delayed (chronic) lung injury (silicosis). The use of a NIOSH-approved respirator and tight fitting goggles is recommended when sawing or grinding operations are in progress. barkmanveneers.com Barkman Concrete Limited installation (continued) 3 Mix Mortar Mix 2-parts washed sand to 1-part Portland cement to a firm, moist consistency or use “type S” pre-mixed mortar. Mortar that is too dry will crumble and not provide a proper bond; too wet and it will be weak and messy. To test, place some mortar on trowel and turn sideways. Mortar should not slide off – give trowel a shake and mortar should come off. 4 Scratch Coat Spread mortar evenly over metal lathe approximately 3 ⁄ 8" thick. 5 Rake When scratch coat is “thumbprint hard” (sticking thumb into mortar will leave thumbprint, but no mortar will stick to your thumb) rake horizontally. Allow scratch coat to dry for at least 24 hours. 6 Apply Corner Stone Veneers If your project requires corners, install these first. Apply mortar (see step 3) evenly to the entire back of a stone veneer corner piece and adhere it to the scratch surface with even pressure. Corner pieces have long and short sides which should be alternated in opposite directions as you build. 7 Apply Flat Stone Veneers Once corners are completed, apply mortar evenly to the entire back of a flat stone veneer piece and adhere it to the scratch surface with even pressure. Place stone veneer pieces close together creating uniform joints between them. Average joint should not exceed 1⁄ 2" to obtain natural look. Cut pieces as required. Fit small pieces into any remaining gaps. 8 Add Additional Mortar All edges or voids around the stone must be filled with mortar. Use a grout bag to fill in voids. Care should be taken to avoid smearing mortar on the surface of the stone. 9 Smooth Out Mortar Once mortar joints have become “thumbprint hard” (sticking thumb into mortar will leave thumbprint, but no mortar will stick to your thumb), smooth out with jointing tool to the desired depth. 10 Brush Off Loose Mortar Once mortar has set, use a dry brush to remove loose mortar and to clean the stone veneer surface (never use a wet brush or acid based products).