If your painting a light colour over a darker colour you may need to use more coats. To get the best possible colour and protection apply 3 coats. Waterproofs and protects your wood. Whatever you decide to paint will be protected from the weather in just 1 hour.
The VERY BEST wood metal stone paint on the market
Have used the paint on wood stone and metal and although it says on the tin 'not for plastic' it performs well on that too but not so hardwearing, having said that my plastic plant pots were painted 6 years ago and only now need painting again. Dries really quickly and there is a great array of colours. Shop around on eBay as prices vary considerably. (from cheapest with 20% voucher to the most expensive seller was £10 difference!) Have used Cuprinol previously on a fence but Ronseal garden paint really is far superior. Hope this review helps.