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Back of cab seam sealer

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kramttocs

Back of cab seam sealer

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Are all trucks supposed to have seam sealer at the bottom of the back wall?

The two reg cab trucks in the shop do but my super cab doesn't. Where the vertical seams are in the back panel I can see daylight at the bottom looking at the floor. Not rusted out or anything, just gaps because of the sheet metal bends and no sealant.

I am currently installing the heat/sound proofing so want to get this addressed first. Any reason I shouldn't run some seam sealer from cab corner to cab corner and fill in the gaps?

Scott
'Camano' 1986 F250 Supercab XLT Lariat 460/C6
'Chanute' 1980 F350 C&C 400/NP 435 - Gin Pole

But there ain't nothin' wrong with the radio

Gary Lewis

Re: Back of cab seam sealer

Administrator

I've not looked at that spot on a supercab, but surely they would have seam sealer there. I can't imagine them not having it, and can't see why installing it would be a problem.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

kramttocs

Re: Back of cab seam sealer

Administrator

My thoughts also. Thanks Gary

Scott
'Camano' 1986 F250 Supercab XLT Lariat 460/C6
'Chanute' 1980 F350 C&C 400/NP 435 - Gin Pole

But there ain't nothin' wrong with the radio

MattK

Re: Back of cab seam sealer

In reply to this post by Gary Lewis

What sealant would you recommend? I have some similar areas I want seal up before the sound proofing is put down.

Matt & Laura (East Wentachee, WA)

Our Ford Family:
1983 Bronco: Restomod in progress. I-6 4.9L with NP435 being swapped with ZF42.
1966 Mustang: Stock restoration with Inline 6
2000 F350 Crew Cab Superduty DRW: 4x4, 7.3 with DP tuner, S&B intake, 4" turbo back, and bellowed up-pipes.
2015 Expedition XL: 4x4, 3.5-liter twin-turbocharged EcoBoost V6

kramttocs

Re: Back of cab seam sealer

Administrator

Scott
'Camano' 1986 F250 Supercab XLT Lariat 460/C6
'Chanute' 1980 F350 C&C 400/NP 435 - Gin Pole

But there ain't nothin' wrong with the radio

MattK

Re: Back of cab seam sealer

Is that one of the 2 part ones? Do you have the 3m part number?

kramttocs

Re: Back of cab seam sealer

Administrator

No, single component.

3M 8367

I just used a regular caulk gun which worked fine though may be why the top collapsed some. Sealed it up but haven't ever tried it so can't say if it's one time use or not.

Scott
'Camano' 1986 F250 Supercab XLT Lariat 460/C6
'Chanute' 1980 F350 C&C 400/NP 435 - Gin Pole

But there ain't nothin' wrong with the radio

MattK

Re: Back of cab seam sealer

Awesome thanks for the info.