Varnishes available for interior and exterior use. High Build Gloss Varnish is an extremely clear oil based varnish with non-yellowing characteristics for interior and exterior use. This is available in 25ml, 1 Litre and 5 Litre tins. Polyvine varnish although oil based is for interior use only and is available in Dead Flat (matt) or Eggshell (satin) finish. This comes in 500ml, 1 Litre and 2.5 Litre tins.