Spray on Bed Liner and cap questions

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ZMan079

Member
Aug 10, 2015
85
27
18
WIndber, PA
Truck Year
2015
For those of you who have spray in bed liners how did the applicator (whether factory or aftermarket) deal with the black plastic piece in top of the bed rails, Did they remove and spray under, or did the spray up to and including the inside lip of bed, or did they just spray up to under the rails?

The reason I ask is that on my last truck I had them spray over the rails and down the outside of the bed about an inch or 2. I was wondering if this is possible and still be able to put the black plastic rails on if you ran the liner down that far?

If you have a cap did you leave those plastic rails on or did you remove them? My worry would be that water/salt/dirt/etc. would gather under black plastic rails and cause rust issues...

Sorry for the ramblings.....

ZMan079
 

Mharrison

Active Member
Jun 17, 2015
373
105
43
Yuba city, ca
Truck Year
2015
You will never be able to put the plastic caps back on if they spray under them...the only way to do it is to spray up to them.
 

Brady

Well-Known Member
Jun 7, 2015
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2015
Personally I would just stick with spraying up under the inside lip and not over the rails. And reuse plastic caps. Reason I say this, is because should your bedside need repainted, you'll never get a good clean transition against the over the rails bedliner spray. Happened on my last truck and it bugged the crap out of me.
 
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BoostN

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Jul 27, 2013
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That's a good way to look at it. I've always done under the rail. I think it looks better personally.
 

Brady

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Jun 7, 2015
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I agree. Live & learn.
 

ZMan079

Member
Aug 10, 2015
85
27
18
WIndber, PA
Truck Year
2015
My concern was the salt would gather/get trapped under the plastic rail cover and create a rust scenario..
ZMan079
 

Brady

Well-Known Member
Jun 7, 2015
991
392
63
OHIO
Truck Year
2015
My concern was the salt would gather/get trapped under the plastic rail cover and create a rust scenario..
ZMan079
You could always run a bead of good silicon caulk on top of the rails before you put the plastic caps back on. Honestly I wouldn't worry about it tho.
 

Brady

Well-Known Member
Jun 7, 2015
991
392
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OHIO
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2015
Silicone sealants on painted metal will lead to rust, so I'm told...

My concern is when I put a cap on....
Hmmm, I've never heard that. Don't the caps have a good gasket seal to the bed rails?
 

Mharrison

Active Member
Jun 17, 2015
373
105
43
Yuba city, ca
Truck Year
2015
There is going to be no perfect answer...in the winter time just keep her clean make sure you rinse out the areas your concerned about...
 

ZMan079

Member
Aug 10, 2015
85
27
18
WIndber, PA
Truck Year
2015
They do but you'll be sealing against the black plastic rail cover and it seems there is a gap between it and the actual bed. Don't know if it will compress when cap goes on. Maybe someone that already has a cap can chime in...
ZMan079