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SEMCO Liquid Membrane™
Advanced waterproofing membrane and crack bridging protection.
The SEMCO Liquid Membrane™ is a single component water-based waterproofing and anti-fracture membrane. This revolutionary blend enables easy application while providing excellent crack bridging and waterproofing for long-lasting protection.
Application Areas
✓ Concrete. ✓ Under tiles
✓ Wood, Ply, MDF. ✓ Roofs
✓ Swimming Pools. ✓ Fountains
✓ Basements. ✓ RV
✓ Metal / Aluminum. ✓ Retaining block walls / concrete
What are the benefits of SEMCO Liquid Membrane™?
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Easy to use – can be applied with a roller or brush
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Rated for heavy duty service
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Suitable for waterproofing pools, water features, showers and wood surfaces
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1300% stretch and elongation. Stabilizes wood substrates to receive surface finish products
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500 PSI or 3.44 N/mm2 adhesion
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Quick drying time allows you to proceed within 2 hrs of application with your finish
Installation
STEP 1: Sweep debris off surface to ensure proper bond to substrate
STEP 2: Use a 1/2″ nap roller. Allow any pre-treated areas to dry to the touch. Apply a generous coat of SEMCO Liquid Membrane™ with brush or roller over substrate including pre-treated areas. Apply another generous coat of SEMCO Liquid Membrane™ over the first coat of SEMCO Liquid Membrane™. Once you can walk on the surface and not get any residue on your shoe or feet or cannot leave a fingerprint impression it is ready to re-coat. Apply another thin coat of SEMCO Liquid Membrane™ in an alternate direction over the first coat of SEMCO Liquid Membrane™. Let topcoat dry to the touch, approximately 1–2 hours at 70 °F (21 °C) and 50% RH. When last coat has dried to the touch, inspect final surface for pinholes, voids, thin spots or other defects. SEMCO Liquid Membrane™ will dry to bright orange color when it’s dry to touch. Use additional SEMCO Liquid Membrane™ to seal the defects. Required thickness is 30 mil PURPOSE: Suitable of all sizes of installations, and ensures best performance of the SEMCO Liquid Membrane™
PRECAUTIONS: For clean up, use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate Before applying next coat, ensure RH is max. 25% on the surface For applications where the product is fully submerged 3 coats @0.02 inch thickness per coat is required and allow a curing time of minimum 6-7 days. It is required to apply SEMCO Liquid Membrane™ in a continuous manner until above the water line. We do not recommend partial applications that are submerged. Coverage may vary depending on porosity of the substrate and also the thickness of coat being applied. For applications on fiberglass and metal, it is recommend to apply thinner coats (15mil thickness) in order for product to dry more evenly.
