I just got dont putting herculiner inside my toolbox on the bottom and a strip on each side. I also lined the 2 wooden blocks my toolbox is going to be sitting on once i get it put back in. It was installed in the bed by a bunch of jackasses who drilled way too many holes and used screws The water was building up in the box from the bottom when it rained so this should be functional at keeping the water out and look nice too.

 

well i put way too thick a coat in the bottom of the box and it gathered at the bottom in puddles and looksl ike ***** so im gonna put a light coat on tomorrow to even it out and get the grainy texture back. but its really rubbery and the sides look nice!

 

If the water is coming in through the screw holes, go buy a small tube of silicone (at Wallymart) and apply around the screws to seal out the water.