Odds are after a summer the oil based paint (even if you put a coat over the top) will get very brittle and begin to crack, particularly if the paint did no go onto bare wood.

Is oil-based paint waterproof?

Oil-based paints are typically slower to apply than water-based paints, as the paint has a stickier and thicker feel to it.
Application.

Oil Based Drying Times Water Based Drying Times
Touch Dry: 6 to 8 hours Touch Dry: 30 to 60 minutes

What are the pros and cons of oil-based paint?

The Advantages & Disadvantages of Oil Paint

  • Advantage: Time.
  • Advantage: Color Depth and Range.
  • Advantage: Varied Applications.
  • Advantage: Range of Finishes and Effects.
  • Advantage: Consistency.
  • Disadvantage: Drying Time.
  • Disadvantage: Lack of Clarity.
  • Disadvantage: Blending Capabilities.