Zinga Zingatarfree (PU Tar Free MIO)
Zinga Zingatarfree (formerly PU Tarfree MIO) is a very under-stated one component polyurethane. It has been used with great success directly over Zinga on narrow-boat hulls, tug-boats, on the base of electricity pylon legs (to keep out both local groundwater and stray currents from nearby electrified railway tracks) as well as on brand new truck chassis. It has extremely high resistance to salts (especially chlorides) and water penetration.
Zingatarfree is available in 1 litre and 4 litre tins and cures to a matt black finish.
See the technical data sheet here for a comprehensive guide.