"I used this stuff on some old sawn pine joists which I'm using for a fence. The product was well absorbed and left a uniform colour. I picked dark oak but the colour, from the tin, was more like old motor oil! The dry colour is unarguably black and not the dark brown I was expecting. We are not talking shades of brown here, the timber looks like it has been blackend by a fire. Fortunatly the colour is not important as it is a side fence behind some shrubs. Since this is a fresh application I can't comment on perfomrance or reliability. Check your colour though, in the shop."