Hello everyone, I have an F150, 2026, with a 5.6' box. The truck came with the FORD lining: the "Tough Bed". It looks like a set of carpets stuck on the walls and the bottom of the box. So there are joints and I’m afraid that water will get in and stay under the lining, causing rust. Are the joints waterproof like a "Line-X"? If not, is it recommended to install a silicone or other type of caulking on all the joints?

 

its a factory spray in liner, the gaps allow for water drainage

 

What would be rusting?
Isn't your truck aluminum?

 

Welcome.