I've been after a non-coloured treatment too – I've just done a load of Ronseal Wood Preserver on some scaff boards I've used to make a planter. I thought that was going to be the end of it, but the instructions say it should be overpainted. My current feeling is to say fuck it and just see how it goes
Having just finished painting a 6x8' shed pre-assembly, I don't think this is possible unless you slept on the outdoor furniture in the shop for multiple nights.
I've been after a non-coloured treatment too – I've just done a load of Ronseal Wood Preserver on some scaff boards I've used to make a planter. I thought that was going to be the end of it, but the instructions say it should be overpainted. My current feeling is to say fuck it and just see how it goes