Tile & Stone Installation - Surface Preparation
Southcrete™ 1132 One-Part Liquid Waterproofing and Anti-Fracture Membrane (SC1132)
Southcrete™ 1132 One-Part Liquid Waterproofing and Anti-Fracture Membrane is a single-component, water-based, brush or roller applied, thin, load-bearing liquid membrane. For use under thin-set and thick bed mortar applications as a waterproof or anti-fracture membrane. The elastomeric properties help reduce the risk of substrate cracks transferring above to the hard surface flooring. Southcrete 1132 is suitable for use under ceramic tile, dimension stone, vinyl tile, rubber tile, brick, parquet, and strip wood. Southcrete 1132 waterproof produces a continuous moisture barrier with outstanding adhesion to concrete slabs, concrete block, cured Portland cement mortar beds, cementitious tile backer board, and exterior grade plywood.
Do not use it as a wearing surface (underlayment only). Do not apply to surfaces that may go below 40°F / 4.5°C (forty degrees Fahrenheit / 4.5 degrees Celsius) during the first 72 hours after application. Do not use it as a leveling or patching underlayment. This liquid membrane must never be applied over ? inch (3.2mm) thick.
Detailed installation procedures may be found in the Tile Council of North America (TCNA) Handbook 2019 and shall conform to ANSI 108.13.
CONCRETE and CEMENT SUBFLOORS
Concrete must be twenty-eight (28) days cured and free of moisture. Surfaces must be free of any wax, dust, or paint overspray. Hence, any further cleaning shall be done by sanding, scraping or scarifying the surface to assure proper bonding. The surface may be cleaned by using SGM Safe Clean Crystals and then neutralized. Smooth steel troweled concrete should be roughened prior to installation. For hot and dry conditions, lightly dampen the surface with water leaving no puddles of water. The waterproof electrometric properties permit the installation of hard surfaces to substrates subject to deflection up to 1/240th of the span. Leave a gap of 3/16 inch (4.8 mm) around all vertical abutments and pre-fill with the liquid membrane. This shall be done wherever a vertical surface meets a horizontal surface, such as curbs, columns, drains or other protrusions. Any cracks or voids in the substrate including honeycombs, etc., shall be treated with the appropriate cement-based patching compound.
PLYWOOD / WOODEN SUBSTRATES
All plywood shall be an APA exterior grade, free of dust, oil, and any other foreign matter. The typical floor system shall consist of joists not exceeding sixteen (16) inches maximum spacing on center and a subfloor minimum of one (1) inch thick. Refer to ANSI AN-3.4.1 for detailed instructions for framing and underlayment. All floors shall be engineered so that the maximum deflection does not exceed 1/360 of the span in accordance with applicable building code provisions for floors and floor loading. Leave a gap of 3/16 inch (4.8 mm) between panels, and 3/16 inch (4.8 mm) around all vertical abutments. These gaps must be pretreated by filling with the liquid membrane.
TEXTURE AND COLOR
Viscous yellow liquid.
Mist or wet surface so they are damp but free of any standing water. The liquid membrane may be applied by brush or roller. Pre-coat all edges, corners, wall and protrusions with a heavy coat of liquid membrane extending it six (6) inches (15.2 cm) onto the slab and six (6) inches (15.2 cm) up the vertical surface. Apply the liquid membrane as a continuous even film with overlapped strokes. After the first coat becomes dry, usually in 1½ to two (2) hours, inspect membrane for voids or pinholes. Fill any voids with additional material and apply the second coat with strokes at right angles to those for the first coat. A minimum dried coating thickness of 1/32 inch (0.79 mm) is needed. The wet membrane thickness needs to be at least 3/64 inch (1.2 mm). While applying liquid membrane, check the depth of the membrane occasionally with a wet film thickness gauge. If the installation is stopped long enough for the liquid membrane to cure, the new work must overlap previous work by six (6) inches.
EXPANSION, CONSTRUCTION, CONTRACTION, CONTROL, AND ISOLATION JOINTS
Movement joints are necessary for the success of most installations. Many methods are necessary due to various structural systems and job-related conditions. Detailed installation procedures may be found in the Tile Council of North America (TCNA) Handbook 2019, Method EJ 171 for movement joint design essential EJ171-03. Do not bridge joints that are designed to allow for movement. Any movement joint should be carried through any finishing material. Apply a minimum 3/64 inch (1.2 mm) of the liquid membrane over the joint and substrate following the detailed instructions. Embed the fiberglass mesh tape into the Southcrete 1132 and ensure that the Southcrete 1132 completely wets out the mesh tape. Fill all voids and apply a second coat at right angles to those of the first coat. Install tile work onto the membrane but do not bridge the joint. After the tile work is set properly, fill the joint with any specified sealant, following the manufacturer’s instructions.
For hairline shrinkage cracks up to ? inch (3.2 mm) or less, no special treatment is necessary. Pre-fill the cracks during the installation of the liquid membrane to provide a full 3/64 inch (1.2 mm) in thickness above the crack. Embed the fiberglass mesh tape into the Southcrete 1132, to ensure that the Southcrete 1132 completely wets out the mesh tape. Fill all voids and apply a second coat at right angles to those of the first coat. Cracks in excess of ? inch (3.2 mm) should be treated the same as expansion joints. Detailed installation procedures may be found in the Tile Council of North America (TCNA) Handbook 2019, Method EJ 171 for movement joint design essential EJ171-03.
Clamping ring-type drains with weeping ability must be used as per ASME 112.6.3. Fiberglass mesh must be used on all shower pan applications. Cut the fiberglass mesh to the size of the shower stall area allowing for adequate material to turn up the wall at a minimum of six (6) inches above the shower floor. Cut a round hole in the center of the mesh to the size of the drain opening. Apply enough Southcrete 1132 liquid around and over the bottom of the drain clamp up to the drain opening. Place the fiberglass mesh tape over the wet Southcrete 1132 liquid and ensure that the Southcrete 1132 completely wets out the mesh tape. Fill all voids and apply a second coat at right angles to those of the first coat. When completely dry, apply a bead of sealant around the drain opening where the Southcrete 1132 terminates. Install the top drain clamping ring to complete the installation.
Tile work may begin after the liquid membrane is completely dry, usually 24 hours after application. Use SGM latex-Portland cement mortar such as Multi-Crete or EGS 100-Percent Solids Epoxy for the installation of ceramic tile or dimension stone. Allow membrane to cure a minimum of 72 hours above 65°F / 18°C (65 degrees Fahrenheit / eighteen degrees Celsius) prior to water-testing for leaks. To water test, plug drains and dam areas to be tested. Fill the area with water. Place a mark on wall or surrounding to monitor the water level for leaks. Wait 24 hours — if the level has dropped, thoroughly check around drain and points of flashing. Recover as necessary. KEEP FROM FREEZING.
Conforms to ANSI 118.10 — Load bearing, bonding, waterproof membranes for thin-set ceramic tile and dimension stone installation and ANSI 118.12 — Crack Isolation membranes for thin-set ceramic tile and dimension stone installation.
- Permeability (ASTM E-96): 0.0013
- Water Vapor Transmission (ASTM E-96): 0.0166
- Low-Temperature Flex and Crack Brindging (em>ASTM 836):
- 77°F to 15°F (77 degrees Fahrenheit to fifteen degrees Fahrenheit): No cracks
- Fungus and Microorganism: Does not support growth
- Seam Strength: 10 lbs. / in width
- Tensile Strength: 4 N / mm2
- Elongation (500 mm / Minute): 350% at break
- Shore Hardness: Shore A / Value of 70
- Chemical Resistance:
- Good Resistance: To dilute acids, alkalies, and salt solutions.
- Medium Resistance: To oil
- Poor Resistance: To organic solvents, oxidizing agents.
A five (5) gallon unit (18.9 L) of the liquid membrane will cover approximately 200 sq.ft. (18.6 m²) at 3/64 inch (1.2 mm) of the wet membrane thickness. A one (1) gallon unit (3.78 L) will cover approximately 40 sq.ft. (3.7 m²) at 3/64 inch (1.2 mm).
WARNING — EYE IRRITANT. CONTAINS PORTLAND CEMENT. Product is alkaline on contact with water. Use a paddle for mixing to avoid splashing into eyes or contact with skin. During mixing or application avoid contact with eyes. In case of such contact, flood eyes repeatedly with water and CALL A PHYSICIAN. Wash thoroughly after handling and before smoking or eating. Do not take internally. CONTAINS FREE SILICA — DO NOT BREATHE DUST. Prolonged exposure to dust may cause delayed lung disease (Silicosis). This product may expose you to chemicals, including silica, which the State of California recognizes as a cause of cancer. For more information, visit the Proposition 65 Warnings Website (www.P65Warnings.ca.gov). Use NIOSH approved masks at all times to handle silica dust. KEEP OUT OF REACH OF CHILDREN.
- CONTAINS: Acrylic Polymer Emulsion — C.A.S. 13983-17-0.
SGM, Inc. will replace any material provided defective with the maximum shelf life on unused material of up to one (1) year. If our products are not found to conform to our high standards, notify SGM, Inc. immediately in writing. There is no other obligation expressed or implied and we assume no liabilities for damages of any kind. Suitability of the product for an intended use shall be solely up to the user.