SEMCO Liquid Membrane™ Application Procedure
- STEP 1
HOW : Sweep debris off of surface and loose surface
PURPOSE : Ensure proper bond to substrate
- STEP 2
HOW :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™. 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™
- SPRAYING APPLICATION
HOW : The sprayer being used for the application of SEMCO Liquid Membrane™ should be capable of producing a mini- mum of 2,500 psi (17.2), maximum of 3,300 psi (22.8 MPa) with a flow rate of 0.95 to 1.6 GPM (3.6 to 6.0 LPM) using a 0.521 or a 0.631 reversible tip. Keep the unit filled with SEMCO Liquid Membrane™ to ensure con- tinuous application of liquid. The hose length should not exceed 100’ (30 m) in length and 3/8” (9 mm) in diameter.
Required thickness is 30 mil
PURPOSE : Reserved for exceptionally large areas, 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.
