Check out the wood sealant finish tests done by mar k i think a link is given in the bed forum.
Best sealer for wood truck bed.
Some but not all brands recommend using a degreaser.
Truck bed deck on wheels.
Best of both worlds.
As you most likely know the major difficulty in maintaining a good seal on wood is that wood expands and contracts due not only to moisture which you might e able to seal but also due to temperature expansion and contraction and i bet also.
If the truck bed never leaves the garage those other finish s will probably be fine i can t afford callbacks so i only use the best.
It penetrates deep and another application of linseed oil can be applied at any time with minimal effort.
1 3 boiled linseed oil 1 3 marine spar varnish and 1 3 mineral spirits.
The spar gives you some uv protection in the mix the linseed gives great protection and the mineral spirits helps it all go deep into the wood.
But another option to consider 3 part mix.
They also contain mildewcide which helps to prevent mold and mildew growth.
Myfamirea adhesive tailgate seal fits pickups truck auto car keep kit dust dirt and moisture out of covered truck bed 24 5 ft.
Also certain woods behave better outdoors than others mahogany teak would be my choice its dense and hard and does not rot as will oak or pine.
Their best by far results for a natural finish was with a clear made marketed by por call pelucid.
These sealers deeply penetrate the wood and adhere to the porous spaces thus preventing water from penetrating through the material and avoiding decay.
A lot of marine woodworkers finishers around here use a west marine epoxy first to stabilize the wood for less movement and coat with the finish of their choice usually some type of good varnish.
Treat the wood like a fine furniture by removing dust with a soft cloth.
I only got about 5 years out it before the finish failed.
Use a suitable timber ipe jarrah ekki and don t bother coating it.
A good finishing job enhances your truck and will give you good service.
Penetrating oil such as linseed oil is best for truck beds.
Pelucid does give a great finish however it is not intended for outdoor use which is stated both on the por 15 site and on the can itself.
However check the.
The best wood sealer for outdoor wood products is exterior penetrating stain.
After the finish has cured for about 30 days apply a good coat of carnuba paste floor wax to seal and preserve your beautifully finished bed wood.
Marine finish has a uv inhibiter which will protect it from the sun.
It also does not last as long as spar varnish.
Step 1 sand the truck bed using an orbital sander with 100 grit sandpaper.
Use a wire brush dual.