I have always found Hammerite to be fine on solid items that are not going to be subjected to impacts. It is brittle once fully hardened and susceptible to stone chips etc.

I happily use the smooth Hammerite on my steel garden gate but not on a car.


Paul
Costock, UK
2014 4/4 Rolls Royce Garnet Red
Disco 5
Teddy - 17h1 Irish Draught cross