SikaWall®-485 MP Decap

12 months in its original, unopened pail.

Store protected, in dry conditions, at temperatures between 5 °C to 30 °C. Do not expose to direct sunlight and heat. Protect from freezing. If the product has froze, do not use.

ASTM C127-15 /  ~ 1.1 g/cm³ 

> 93.3^oC

ASTM D5324-16 / ≈ 1.7 (Acidic)

SikaWall®-485 MP Decap is part of the SikaWall®-485 system. To be used for surface preparation and in order to optimize the chemical adhesion of Sikawall®-485 coatings.

Minimum 5 °C / Maximum 30 °C

Minimum 5 °C / Maximum 30 °C

Minimum 5 °C / Maximum 30 °C

Approximately 6 m² to 10 m² (~60 ft² to 100 ft²) per 3.78 L (1 US gal) per coat. Minimum wet film thickness (w.f.t.) : 0.38 mm (15 mils).

Note: SikaWall®-485 MP Decap must not be diluted. Coverage will vary with surface texture and application method. Multiple applications may be needed depending upon the type of coating and thickness.

Wait until the surface to be treated is completely dry before the application of SikaWall®-485 Decap. Always perform a mock-up before proceeding to the entire application of SikaWall®-485 MP Decap on the substrate to ensure the  compatibility of the product with the surface. Mock-up should be prepared on the actual surface to be treated, using the same crew, tools and techniques that will be utilized on the job to confirm the coverage rate.

This validation will provide the required waiting time to  obtain the desired results and will determine if a subsequent application of SikaWall®-485 MP Decap is needed. Moreover, this process will also establish the consumption rate specific for the project, help estimate the project timeline.

Wait until the surface to be treated is dry before starting the application.

Mix SikaWall®-485 MP Decap to ensure uniformity using a slow speed (300 - 450 rpm) drill fitted with a Jiffy-style paddle. Mix for about three (3) minutes until a homogeneous mixture is obtained.

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.

Clean all tools and application equipment with water immediately after use. Air spray equipment needs to be flushed with potable water as soon as the application has  been completed.