How to treat a retaining sleeper wall.

mjwwiggy

I have a retaining sleeper wall, which is four years old, and has lost all of its colour.

In the spring I want reinstate its former glory, by restoring the brown colour whilst at the same time apply any necessary treatment to prolong its protection against rot.

Is there a single product that will do both? Or is it best to divide the task into two parts (i.e varnish first, then apply an oil of some kind).

Please advise...

Obelixx

Clean off any loose muck.  Let it dry thoroughly then a simple coat of oil will help waterproof it and restore colour.   I find simple olive oil for cooking - not extra virgin - with the juice of half a lemon added and shaken then brush on or wipe on with a cloth.

Pete.8

I use external wood preservative - lots available, e.g. from Amazon
I use a stiff nylon brush to clear any algae and bits and 2-3 coats of preserver, lasts 3-4 years.