Installation of stone veneers is challenging and it is usually performed by professional teams with lots of experience. Using your trowel, create a ridge around the outside back of the stone. Their weight can come in at about 13 pounds per square foot, about twice what concrete-based synthetic stone veneer weighs. Grout is ready for finishing when it crumbles away like sand when brushed. Surface must be free of paint, dust, or dirt. Water can become trapped behind the veneer, rotting the outside of your home over time if there is no way for the water to escape or the walls to dry properly. On concrete block or poured concrete walls, a vapor barrier may not be required—follow the suggestions of the veneer manufacturer. Surfaces that have been painted must be sand blasted or otherwise stripped of paint. Exact preparation steps will depend on the surface to which you'll be attaching the veneer. Start by washing all the stones, then lay out the pieces on a flat surface to test the layout. Finally, there is also true stone veneer that is made from thin slices of actual stone—usually limestone or sandstone, but occasionally granite. Please contact an RCP Block & Brick to discuss your particular project. In addition, you must use enough mortar on the backs of the veneer pieces to ensure the veneer adheres properly. After the corner pieces are installed, work outward with flat pieces, again beginning at the bottom and working upward. Painted or sealed brick, concrete, or similar materials need their coatings cleaned or require a lath. Including Plywood, Sheetrock, Green Sheetrock, or Fiber Cement Board, In In accordance with local building codes, install metal lath using galvanized nails or screws 6" on center vertically and 16" on center horizontally, penetrating the studs a minimum of 1". Remember that trimmed edges will be covered later by using grout, but it is a good idea to position cut edges where they won't be in direct sight lines. If cutting the stone is necessary, a Skill saw with either a dry or wet cut diamond or masonry blade will work. Use Pre-blended Type S mortar. The molds impart a texture to the veneer pieces that are very close matches to that of natural stone. Removal can be accompolished using a stiff brush and clean water. If your joint will vary (such as a dry-stack or over grout application) adjust your estimates accordingly. Stone should be installed at least 3" above grade level to prevent water from continually saturating behind the back of the stone and causing structural damage. Keep your hands and your stone veneer clean during the installation process. Water infiltration and damage can be caused from incorrect installation. (It is not necessary to use expanded metal lath on fiber cement board unless required by local building codes), Including Cleaned and Untreated Concrete, Masonry, or Stucco, Stone veneer can be installed directly to these surfaces if clean and absent of any paint or debris. Mix according to manufacturer's directions. However, faux stone and brick veneer gives you that timeless elegance for a significantly lower price and you can install it yourself. The best strategy is to begin at wall corners near the bottom, working up and outward. Once the stone has been affixed to the scratch coat using mortar, the joints, or gaps between the stone, will be filled with grout. Before any work can begin, in most instances, you must place a waterproof material over the area that will be covered with stone veneer to protect the wall behind the veneer. Most stone is packaged assuming a 1/2" mortar joint. 254 Platinum, designed to just mix with water, has a long open time with unsurpassed adhesion and workability. 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This prevents the stone from pulling moisture away from the mortar allowing it to dry naturally and with a stronger bond. It is important to clean stone veneer within 30 minutes, before mortar can fully dry on the face. Otherwise, lay out small sections and apply them in stages. If release agents are present, etch the surface of the concrete with etching agent. Wet mortar on stone will leave a filmy residue that dulls the appearance of the stone and should be removed immediately before it dries/hardens. Prepare the mortar mix for bonding the veneer. Below are the steps involved. A scratch coat will be needed when metal lath is used. Stone veneer comes in several different types, and the exact preparation and installation process will vary somewhat depending on the product. All stone should be applied according to local building codes. Fill your grout bag about half full with your grout mixture. Adding a waterproof material to the outside of your home is merely one part of dealing with water problems. Be sure to wrap all corners overlapping the metal lath at lease 4". Next, install sheets of expanded, galvanized metal lathe as foundation for the mortar under the veneer. Attempt to keep joints a consistent height and width. When it's properly installed, these veneers are almost indistinguishable from solid stone. brick in an existing older structure. How to Choose Stacked Rock to Match Vinyl Siding. © Copyright 2020 Hearst Communications, Inc. Dampening the backs of the stones before adding mortar also prevents the mortar from drying too fast, which can lead to a weak bond. A nipper can also be used to trim small amounts off the stone. Twist the top end of the bag and squirt a small amount into a bucket to prevent air pockets. Prepare a scratch coat of type N or type S mortar. Cover surface with a weather resistant barrier such as tar paper. January 22, 2001 by Locke Wilde 1. Also anchor the sheating to the sheathing between studs, spacing nails about 6 inches apart. Seal the veneer stone following the manufacturer’s instructions. The following guideline is a general overview of the proper steps involved when installing natural or manufactured thin stone veneer where no special circumstances are present. Be sure to overlap joints 4" in shingle fashion. How to Install Stone Veneer on Interior Accent Walls. If the stone slides or slips when you release it, then it's likely the mortar layer is too thin or that the mortar has been mixed too wet. Using a grout bag, cut a hole approximately 1/2" in the tip of the bag (if hole is not already provided). The broad product selection me Normally vertical and horizontal joints should be staggered to prevent long, unbroken lines that may draw the eye to a particular area. 1 part Type S Masonry Cement to 2.5 parts sand. With so many application options, proper installation procedures make all the difference in ensuring manufactured stone surfaces withstand the tests of time and weather. In accordance with local building codes, install metal lath using galvanized nails or screws 6" on center vertically and 16" on center horizontally, penetrating the studs a minimum of 1". Use a notched trowel to lightly rake horizontal grooves in the scratch coat while the cement is still slightly wet and allow to dry for 24 hours. Mix a minimum of 5 minutes. Contact an RCP location near you... we can help! The goal is to give the mortar some "tooth" that will help the next layer of mortar adhere. Not Sure? True natural stone veneer is found only in the most upper-end homes, while the synthetic forms are a somewhat bargain-basement option. Mix thoroughly until it reaches the consistency of thick paste. Brush the joints with a whisk broom to smooth them out and clean away any loose mortar. Use a masonry brush or sponge to dampen the back of the stone, but do not saturate it. There are also some mortars designed specifically for stone veneer, which contain polymers and sometimes other chemicals that enhance the bond between the stone and wall. Preparation of the surface is a key aspect in preventing any water damage and making sure your stone veneer project remains structurally sound for the life of the installation. It is recommended to install all corner pieces first before installing the field. 1. You will be affixing the stone veneer to the scratch coat using a stone veneer mortar. Be certain that the surface of the stone is free of dust, dirt, or any loose particles. Depending on the layout, you might want to add some tint to the coat because it is sometimes visible once the stone veneer is installed. Let the scratch coat dry for at least 24 hours before applying the stone veneer. There are a limited number of patterns in manufacturered stone veneers, and carefully planning the arrangement of pieces helps ensure a natural-looking result. Untreated concrete, brick, stucco and similar materials don't need preparation or a lath. Mixing the Mortar: Use a … Step 5: Installing the Stone Veneer You will be affixing the stone veneer to the scratch coat using a stone veneer mortar.