Apply SikaWall®-485 MP Decap as a uniform and thick layer on the coating or paint to be removed at a thickness of 0.38 mm (15 mils) (w.f.t) minimum.
For optimal efficiency, the remover should be applied at a thickness between 30 % and 50 % of the coating/paint to be removed. For example, a 0.3 mm (12 mils) thick coating will require SikaWall®-485 MP Decap to be applied at a thickness of 0.38 mm to 0.45 mm (15 to 18 mils).
For thicknesses over 0.76 mm (30 mils), SikaWall®-485 MP Decap should be apply ed in two (2) separate applications. Begin with a layer of 10 mil, allow the product to react with the paint surface for 30 minutes and then re-apply SikaWall®-485 MP Decap to achieve the required final thickness.
Ensure that the surfaces treated with SikaWall®-485 MP Decap have been adequately rinsed with potable water and are completely dried before the application of the selected Sikawall-485 paint system.
IMPORTANT NOTE : Always carry out an application test in an inconspicuous to verify substrate conditions and to confirm application method, consumption, coverage, dwell time and if a subsequent application is necessary to help achieve desired results. Ensure adequate protection for adjacent surfaces not to be stripped. Best practice suggests that the selected area is acceptable to all parties involved and that it is representative of the area to be eventually stripped. Cover and protect surfaces from splashes that may be caused by application or wind. Use adequate protection including, without limitation such as a plastic film (polyethylene) or any other means and ways that can insure an adequate protection. For optimal efficiency, the thickness of the layer of SikaWall®-485 MP Decap must be greater than 30 % to 50 % of the thickness of the layer to be removed.
DWELL TIME
The waiting time will depend according to the type of paint and the temperature. Usually, most of the paint can be removed after 1 to 6 hours. SikaWall®-485 MP Decap can be leave on the surface over night for optimal result.
RE-APPLICATION
If several layers of paint need to be removed, it can be anticipated that the adhesion between some of the layers will not be optimal and that a break may occur between two coats. In this case, it is recommended to remove the loose paint and reapply the SikaWall®-485 MP Decap according to initial application.
The paint remover must not be left to dry on the surface. SikaWall®-485 MP Decap has been developed to remain wet for a period of 48 hours, during which time the product remains active. Exposure to wind, intense direct sunlight or applications carried out at inadequate thicknesses (too thin) can cause premature drying. If SikaWall®-485 MP Decap begins to dry, reapply according to initial application.
SURFACE CLEAN UP
Once the SikaWall®-485 MP Decap has penetrated and impacted the integrity of the paint film, it can be removed with a scraper, a vacuum compatible with wet residue or by using a water pressure machine.
The surface must then be rinsed with potable water to remove chemical residues before repainting. On vertical surface, it’s important to rinse the facade starting from the bottom and then moving upwards. If water flows from top to bottom, the contact of the water with the paint will regenerate the adhesion capacities.