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Old 11-28-2016, 09:25 AM   #1
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To use or not reuse that is the question...

I have a couple of questions as I start my build, well more than a couple but first things first. I'm thinking of pulling the metal perforated ceiling down and doing the spray foam insulation and then putting it back up, is there a reason to not reuse the metal ceiling? Pros and Cons, besides it being a great place to keep my refrigerator magnet collection...lol And the next question because my bus is a rear engine should I keep the heater that's mid way in the bus and runs all the way to the front for the drivers heat? and if not what would I use for heat up front while traveling, also from what I've read here keeping that system gives me the ability to help cool down the engine if it starts running hot by opening up the system and allowing coolant to flow through the heater system.
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Old 11-28-2016, 10:26 AM   #2
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I doubt you'd get it back up. Once it comes out its pretty much out.
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Old 11-28-2016, 01:43 PM   #3
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Another con for attempting to reuse the ceiling is thermal bridging and condensation.
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Old 11-28-2016, 02:13 PM   #4
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I had read people talking about the condensation but wasn't sure if the metal roof being perforated made any difference.
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Old 11-28-2016, 02:32 PM   #5
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Yeah- buses sweat a LOT inside. The tin can effect. Check my thread if you wanna see what it was like under there.
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Old 11-28-2016, 02:46 PM   #6
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if your going to get condensation on the interior metal, your still going to get condensation if it is any other material.
Depending on what you end up using, you might not see it since it has soaked into or migrated to the next impermeable surface up.

As moisture evaps, it goes somewhere or nowhere it does not disappear on it's own.
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Old 11-28-2016, 03:54 PM   #7
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Quote:
Originally Posted by Sirdave View Post
I have a couple of questions as I start my build, well more than a couple but first things first. I'm thinking of pulling the metal perforated ceiling down and doing the spray foam insulation and then putting it back up, is there a reason to not reuse the metal ceiling? Pros and Cons, besides it being a great place to keep my refrigerator magnet collection...lol And the next question because my bus is a rear engine should I keep the heater that's mid way in the bus and runs all the way to the front for the drivers heat? and if not what would I use for heat up front while traveling, also from what I've read here keeping that system gives me the ability to help cool down the engine if it starts running hot by opening up the system and allowing coolant to flow through the heater system.


I had the same set up. Rear engine with heater midway. For the time being I removed the heater and ran the heater hoses under the bus to the front. I did that so I would have heat and defrost in the front. I hung on to the heater and may incorporate it back into my layout. Hope this helps...


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Old 11-28-2016, 04:13 PM   #8
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I have rear engine with TWO heaters between engine and driver. I'm not gonna worry about removing mine as I intend to integrate them into the design so I have heat going down the road when needed.

My front heater blower doesn't seem to be working though, I do need to figure that out before it gets cold..... defroster works well though so at least I'll be able to see out my windshield.
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Old 11-28-2016, 04:39 PM   #9
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My heaters are so clogged with dust and dirt nothing comes out of them so first step will be tearing them apart and giving them a thorough cleaning, I don't think they got a lot of TLC during the years as a school bus.
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Old 11-28-2016, 04:49 PM   #10
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I reused one of my ceiling panels. Part of it was used to skin the drivers side window of my bus, the other part was used as a table topper for my shop table. But there is absolutely no way I felt willing to purchase and redrill 3,000 screws into prexisting holes in the ceiling while using my triceps to align a 30 pound piece of flexible sheet metal with those preexisting holes and drilling. 5 times? no thanks.

Benefit of the doubt though, as Tango has mentioned: A bluebird engineer stressed the importance of the inner sheets for the structural integrity of the bus. So your bus will be a lot more meteor/tree proof with the inner ceiling. I think either way it will still total any car foolish enough to hit you.
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