Reply
 
Thread Tools Display Modes
 
Old 10-29-2014, 02:07 PM   #11
Bus Geek
 
lornaschinske's Avatar
 
Join Date: Jun 2004
Location: Roswell, NM
Posts: 3,587
Year: 1986
Coachwork: BlueBird
Chassis: 40 ft All American FE
Engine: 8.2LTA Fuel Pincher DD V8
Rated Cap: 89
Re: Spray Foam Question

FYI: Spray foam needs air to expand. Inside the closed enviroment of a items such as a 2"x2" hollow tube (even one with extra holes drilled into to allow the foam to expand), the foam will not expand except within the first inch or so (often less) of the tube opening. We know this from personal experience. We did not foam the frame tubes of the Blue Bird.


http://coachconversioncentral.com/fredhobe6.htm scroll down to find "tips on what I use to cut foam" if you yourself will be cutting the foam down flush.
__________________
This post is my opinion. It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.
Fulltime since 2006
The goal of life is living in agreement with nature. Zeno (335BC-264BC)
http://lorndavi.wordpress.com/blog/
http://i570.photobucket.com/albums/s...ps0340a6ff.jpg
lornaschinske is offline   Reply With Quote
Old 10-29-2014, 08:46 PM   #12
Skoolie
 
Join Date: Feb 2014
Posts: 195
Year: 1992
Coachwork: Bluebird
Chassis: TC2000
Engine: 5.9 Cummins
Re: Spray Foam Question

Quote:
Originally Posted by lornaschinske
http://coachconversioncentral.com/fredhobe6.htm scroll down to find "tips on what I use to cut foam" if you yourself will be cutting the foam down flush.
The contractor will be shaving it down for us
__________________
Follow our conversion:
Two Birds - 1992 Bluebird TC2000
WVO Powered!
viewtopic.php?f=9&t=467346

www.LiveLoveTravelDream.com
White99z is offline   Reply With Quote
Old 10-30-2016, 01:32 PM   #13
Mini-Skoolie
 
chad.nuesmeyer's Avatar
 
Join Date: Jul 2016
Location: Salt Lake City
Posts: 30
Year: 2001
Coachwork: Blue Bird
Chassis: TC2000
Engine: Cummins 5.9 (24v)
Rated Cap: 66 Passenger
The more I research spray foam insulation the more I want it. I am curious what the group has seen (or been bid) to get a bus insulated professionally with spray foam?

I have been wrestling with a couple of ideas: My wife had planned on using the bus while doing the conversion over a longer period of time. From what I can tell the prep work required for the spray foam doesn't lend itself doing the conversion one room at a time.

Possible Option #1: This led to a thought, what about doing the spray foam myself? Has anybody used the home depot 2 part foam spray?

Possible Option #2: Another thought was to use thinner rigid insulation and then fill the gaps with spray foam or a two part spray. Any experience out there with this combo method?

A third option was to do the 2-part foam then lay in a thin sheet of rigid on top of it... Really just a hybrid of option 2.
chad.nuesmeyer is offline   Reply With Quote
Old 10-30-2016, 04:03 PM   #14
Bus Crazy
 
Elliot Naess's Avatar
 
Join Date: Oct 2005
Location: Clearlake, Northern California
Posts: 2,116
Year: 1992
Coachwork: Blue Bird
Chassis: TC-2000 Frt Eng, Tranny:MT643
Engine: 5,9 Cummins
Rated Cap: 84
Did you notice the price on that Home Depot spray foam kit? $734.-!

I once bought a similar kit at a professional store. Similar price. It was a terrible disappointment. The foam did not expand to anything like I envisioned.

I had previously used 2-component foam in regular cans -- X-30 from Tap Plastics -- and that stuff expands tremendously. (It expands 30-fold, hence the name.)

By comparison, the spray kit didn't do much more than thick paint. And by the time I had covered an 8-foot diameter disc with maybe one inch of foam, the cans were empty. Nothing even resembling the 50 Cubic Feet mentioned for the Home Depot kit.

I wound up installing blocks of polystyrene (styrofoam) and pouring X-30 into the gaps.
(I was building a pontoon for an amphibious vehicle.)

Perhaps the kit was defective. In fact, that seems likely. But at that price, I will never experiment with such again.
__________________
Elliot
Millicent The Bus - roof raised two feet, toy-hauler tailgate.
http://www.skoolie.net/forums/f11/th...gate-1564.html
Elliot Naess is offline   Reply With Quote
Old 10-30-2016, 08:07 PM   #15
Bus Nut
 
AlleyCat67's Avatar
 
Join Date: Oct 2013
Location: Music City USA
Posts: 737
Year: 2005
Coachwork: Thomas
Chassis: Freightliner
Engine: Detroit MBE906
Rated Cap: 72
That X-30 foam looks pretty good, says on the TAP web site that it does make good insulation but not sure how you'd get it to stay in place on a ceiling, since it looks to be "pour and let expand" type of thing. And I'm not flipping my bus over to do that! heh.

It almost seems like you'd have to put a run of ceiling material up, inject the mixed foam and hope it doesn't leak out the cracks between panels before it expands and fills up the void....
__________________
My bus - Jasmine - External Build Website - YouTube Channel - TN/KY Meetup Group
As a level 1 burglar, Bilbo got a pony when he accompanied the level 60 dwarves on the Smaug the Dragon raid. Those powerlevelers probably invited him solely so he could trigger fellowship attacks for them.
AlleyCat67 is offline   Reply With Quote
Old 10-30-2016, 08:12 PM   #16
Bus Nut
 
superdave's Avatar
 
Join Date: Mar 2015
Location: hills of sw virginia
Posts: 837
Year: 1996
Chassis: thomas
Engine: 8.3 cummins
Rated Cap: 11 window
Quote:
Originally Posted by chad.nuesmeyer View Post
The more I research spray foam insulation the more I want it. I am curious what the group has seen (or been bid) to get a bus insulated professionally with spray foam?

I have been wrestling with a couple of ideas: My wife had planned on using the bus while doing the conversion over a longer period of time. From what I can tell the prep work required for the spray foam doesn't lend itself doing the conversion one room at a time.

Possible Option #1: This led to a thought, what about doing the spray foam myself? Has anybody used the home depot 2 part foam spray?

Possible Option #2: Another thought was to use thinner rigid insulation and then fill the gaps with spray foam or a two part spray. Any experience out there with this combo method?

A third option was to do the 2-part foam then lay in a thin sheet of rigid on top of it... Really just a hybrid of option 2.
i used 2 600 sf kits from ebay, thats 600 sf at 1 inch.they worked very well, they cost just under 600 bucks each. my ribs are 2" thick so i filled that in and now im putting 1/2 " foam board up as a thermal break. my bus is 32' long re
__________________
living in a bus down by the river.
my build pics
https://www.skoolie.net/forums/membe...albums942.html
superdave is offline   Reply With Quote
Old 11-02-2016, 11:06 PM   #17
Bus Crazy
 
Elliot Naess's Avatar
 
Join Date: Oct 2005
Location: Clearlake, Northern California
Posts: 2,116
Year: 1992
Coachwork: Blue Bird
Chassis: TC-2000 Frt Eng, Tranny:MT643
Engine: 5,9 Cummins
Rated Cap: 84
X-30 is sticky, but it expands very fast, so there is no time to brush it on or otherwise place it carefully. I made a horrible mess in Millicent when I did not pour it quickly enough and it welled out of the jar I mixed it in.

If you had some crude but effective spray "cannon" that you could quickly pour a quart into and spray it all in a couple seconds, it might work, but of course that is not at all realistic. I'm just having fun here. Maybe pour it onto an electric fan.

Seriously, since others have had good results with the spray kits, I'm pretty much convinced I bought a defective kit.
__________________
Elliot
Millicent The Bus - roof raised two feet, toy-hauler tailgate.
http://www.skoolie.net/forums/f11/th...gate-1564.html
Elliot Naess is offline   Reply With Quote
Old 11-03-2016, 02:56 AM   #18
Bus Nut
 
AlleyCat67's Avatar
 
Join Date: Oct 2013
Location: Music City USA
Posts: 737
Year: 2005
Coachwork: Thomas
Chassis: Freightliner
Engine: Detroit MBE906
Rated Cap: 72
It almost sounds like to spray on the X-30 I'd have to have some sort of sprayer that mixes it as it's spraying. I'm sure there's some sort of beast like that out there but probably mega-$$$ and not sure I'd want to spend it for something I'm only gonna use once..... suppose I'll have to figure something else out. From what others have said I could have it professionally done for what the DIY kits cost after factoring in the waste amount. Still pretty mild temperatures here in middle TN so that should give me a little bit of time to figure out a plan.
__________________
My bus - Jasmine - External Build Website - YouTube Channel - TN/KY Meetup Group
As a level 1 burglar, Bilbo got a pony when he accompanied the level 60 dwarves on the Smaug the Dragon raid. Those powerlevelers probably invited him solely so he could trigger fellowship attacks for them.
AlleyCat67 is offline   Reply With Quote
Old 11-03-2016, 11:26 AM   #19
Bus Crazy
 
Elliot Naess's Avatar
 
Join Date: Oct 2005
Location: Clearlake, Northern California
Posts: 2,116
Year: 1992
Coachwork: Blue Bird
Chassis: TC-2000 Frt Eng, Tranny:MT643
Engine: 5,9 Cummins
Rated Cap: 84
Unless there's been a recent change... that's how the spray kits work -- they mix the two components right in the sprayer.
__________________
Elliot
Millicent The Bus - roof raised two feet, toy-hauler tailgate.
http://www.skoolie.net/forums/f11/th...gate-1564.html
Elliot Naess is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
(Spray) Paint Job. Pre/Post prep. bassbus Conversion Tutorials and How-to's 12 03-15-2013 02:46 AM
spray foam under floor - who has done it? ramairws601 Conversion General Discussions 6 10-16-2009 06:29 PM
staying cool - spray roof w/Ceramic heat resistant coating? nearhomeless Conversion General Discussions 1 06-10-2009 12:50 PM
Best spray gun for painting?? paul iossi Conversion General Discussions 2 05-15-2009 12:35 PM
Wagner spray painters and your bus Billsman Conversion General Discussions 5 05-06-2008 04:32 PM

» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 11:07 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.