In order to bring out the water-repellent performance of HIREC, a few tricks are required in the painting method. Therefore, we ask customers in Japan who are using HIREC for the first time to take a painting course (paid). Painting course will be held exclusively for a customer. We will conduct it according to your consultation regarding the date, time, and location. If you are unable to attend the course, please contact us. Instead of a painting course, for our foreign customers we prepare a video that explains the painting method in detail.
HIREC300-W and HIREC100 have low adhesion in principle, so normally the first layer is coated with a dedicated urethane primer to ensure adhesion, and the second layer is painted with HIREC. (There is also a three-layer specification of epoxy primer + urethane primer + HIREC). Therefore, if this primer can be painted, HIREC can be painted. In particular, special consideration is required when painting surfaces with one-component paints (such as lacquer-based paints) that have low resistance to strong solvents, surfaces with water-based paints or weak solvent-based paints, ABS, PPE, PET, PC, etc. For these materials, we recommend that you wipe the test piece or an inconspicuous area with primer thinner to confirm in advance that there will be no softening, shrinkage, or peeling. If you send us a test piece up to approximately 30cm x 30 cm, we will paint it free of charge and advise you on whether or not it can be painted. Please note that HIREC painted surfaces are extremely slippery, so please refrain from painting on roads, roofs, and other areas where people walk.
HIREC® 100 series do not have strong adhesion strength and it requires to be reinforced with a primer coating. Common epoxy or urethane paint can be used as primer. HIREC® 450 series have stronger adhesion, so that it does not require primer coat. It adheres to many different surfaces except for copper surface.
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