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06-17-2020, 01:56 PM
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#1
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Mini-Skoolie
Join Date: Mar 2020
Location: Biloxi, MS
Posts: 54
Year: 1999
Coachwork: International 3800
Chassis: International 3800
Engine: T444E
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Flex sealing roof, from inside
While gazing upon my interior ceiling, it occured to me.... Self, your ceiling is clean, no leaks for now, but how about the future?
I plan to paint the roof, not sure of the product at moment... would it help or hurt, to paint bare inside ceiling with flex seal?
Anyone done this before? Thanks!
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06-17-2020, 02:07 PM
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#2
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 22,930
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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Quote:
Originally Posted by Sraycwb
While gazing upon my interior ceiling, it occured to me.... Self, your ceiling is clean, no leaks for now, but how about the future?
I plan to paint the roof, not sure of the product at moment... would it help or hurt, to paint bare inside ceiling with flex seal?
Anyone done this before? Thanks!
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It won't prevent any future leaks if you apply flex seal to the interior. I don't really use any rubberized coatings. I just prefer more permanent and thorough solutions to problems.
Proper use of seam sealer and lap sealant are what prevent roof leaks.
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06-18-2020, 08:56 PM
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#3
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Mini-Skoolie
Join Date: Aug 2019
Location: Willow Grove PA, Suburbs of Philadelphia
Posts: 17
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I was thinking about spray on bedliner the inside of bus prior to build out. Lizard Skin or Raptor Liner. My thought was to help stop heat transfer, seal inside, dampen noise.
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06-18-2020, 09:14 PM
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#4
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Bus Crazy
Join Date: May 2007
Location: Whidbey Island, WA.
Posts: 1,055
Year: 1984
Coachwork: Blue Bird
Chassis: All American
Engine: 3208 na boat anchor
Rated Cap: 2
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I'm curious as to why there seems to be so many buses leaking through their roof seams?
My bus is an '84, albeit a Bluebird All American, and I've never had a roof leak in the seams. It's a northern bus, and when I'm on the roof I try to step only on the ribs.
Just want to know why so many roofs leak?
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06-18-2020, 09:48 PM
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#5
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New Member
Join Date: Feb 2020
Location: Tucson,Arizona
Posts: 3
Year: 97'
Coachwork: Thomas
Chassis: intrernational
Engine: T444E international
Rated Cap: 26
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Quote:
Originally Posted by Brain's 97 Diesel
I was thinking about spray on bedliner the inside of bus prior to build out. Lizard Skin or Raptor Liner. My thought was to help stop heat transfer, seal inside, dampen noise.
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heat transfer occurs at each rib.....heat gain from outside into inside.....heat loss from inside to outside...... if you touch between ribs you will feel the lower temp.....now touch the rib.....much hotter......i am thinking of taping each rib on the outside with an automotive alum faced heat shield.....and then covering that with 3m VHB adhesive tape....after which i would caulk around the seams of the tape and then paint the whole roof with a quality exterior paint....
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06-18-2020, 09:49 PM
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#6
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Bus Nut
Join Date: Jan 2019
Posts: 368
Year: 2003
Chassis: Chevy cut-away 6-window shortie
Engine: 6.0L Gasser
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I can't speak for other manufacturers, but on my Collins (in which the seam runs front to back), there's one rivet every 8-9 inches, which even with sealer, seems like nowhere near enough. After 15 years, the seam sealer they put between it all just wasn't enough. When I repaired my roof, I tripled the number of rivets, and put more sealer in, and it's been great ever since.
Chris
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06-18-2020, 10:53 PM
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#7
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Mini-Skoolie
Join Date: Nov 2019
Location: Smyrna, TN
Posts: 64
Year: 1986
Coachwork: Blue Bird
Engine: Chevrolet 427
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My bus doesn't leak through the roof seams. But it does leak through the side wall seams. Still trying to find a solution for that, before I insulate.
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