Would also agree with this. Spend a few quid more. This isn't worth your time
Agree with most of the above, painted at least 3 coats on a load of trellis (ridiculously time consuming) and one winter later it's nearly all off any upward facing surface. Complete crap.
One generous coat was fine for my fences and it is £4 in WILKOS. If the wood has been previously treated with oil based treatment like creosote this product being water based will bead or run so maybe that’s why. Also shake the container or stir with something large as it’s like gel at the bottom.
One coat it ain't. More like 4 coats.
Good reviews on the ducksback, currently around a tenner for 5l