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Old 10-22-2018, 12:53 PM   #1
Bus Nut
tugboater's Avatar
Join Date: Apr 2018
Location: Palmer, AK
Posts: 279
Year: 2004
Coachwork: Thomas
Chassis: Saf T Liner MVP 11 window 32í
Engine: CAT 3126E
Rated Cap: 72
paint interior ceiling & walls before foam?

We're about to insulate with spray foam. I'm hesitating for a moment in hopes of an experienced thought or two. Is it worth a coat of paint on the walls and ceiling prior to foam? Seems like it couldn't hurt & may help seal and add a bit of insulation & extra vapor barrier. I've noticed some converters have done it, others have not.

Our bus is well sealed as it came. No rust or leaks from the ceiling. Is it overkill? I'm leaning toward doing it.

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Old 10-23-2018, 05:46 PM   #2
Bus Nut
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Join Date: Oct 2016
Location: Iowa
Posts: 444
Year: 1989
Chassis: International
Engine: 9.L
Rated Cap: 64
Im painting mine before i insulate, im not going with spray insulation. if thats what you think you need to do, then do it!
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Old 10-23-2018, 06:37 PM   #3
Bus Crazy
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Join Date: Oct 2017
Location: Virginia
Posts: 1,579
Year: 1971
Coachwork: Wayne
Chassis: International Loadstar 1700
Engine: 345 international V-8
Is the metal bare? If so would be inclined to paint it first
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Old 10-24-2018, 08:37 PM   #4
Bus Crazy
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Join Date: May 2017
Location: Chattanooga, TN
Posts: 1,406
Year: 2001
Coachwork: Thomas
Chassis: Thomas
Engine: CAT 3126
The shop I used said it didnít matter. Foam would make airtight bond. Might want corroboration, but thatís what they said.
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