Where a repeat coating is being applied it is important to determine whether the existing coating is still properly bonded to the subsurface. The degree of bonding can be tested easily using a highly adhesive strip. Press the adhesive strip onto various points on the surface to be coated and then pull it off with a sharp jerk.

If old coating material sticks to the adhesive strip, the coating should definitely be removed – otherwise successful bonding of the new coating is impossible. Former coatings can be removed by sanding or chemical stripper- the latter only for 0ne component products. Please note that old antifouling coatings should be removed with wet abrasive paper