Join Truck Conversion Today
Reply
 
LinkBack Thread Tools Display Modes
 
Old 08-28-2004, 08:29 PM   #11
Senior Member
 
Join Date: Jul 2004
Posts: 1,083
Default

....I use something called R-Max...It's a polyisocynate foam board with facings that are aluminum foil... 4X8 sheets 1"=R-7+ Factor....easy to cut with a sharp dry wall knife-glue in place with Liquid Nails/Silicone and fill in gaps, if any, with spray can foam.....my drywall hangers did my whole trailer in 5 hours.....2 layers thick-after I removed the walls and ceiling-which, we put back as soon as they were finished.....there are newer products that have even a better R-Factor but they are expensive....Reflectix bubble wrap is over rated and will degrade if there is any rubbing in the wall-though I have used in in the ceiling of my Volvo over the drivers area/in doors and along with spray can foam and some R-MAX....not really enough space to be super effective but I had the interior out to clean it and fill all passage ways with foam sealent....I have discontimued the air exchange system in the tractor in favor of forced ventulation as I have a under bunk heater/ac unite which is powered by the Onan Generator on the back of the truck....using a HVAC program I have calculated a Maximum 14,000btu usage out of the 36,000 available.....If it gets that cold or hot I'm heading back home....geof
__________________

__________________
women-food-money-naps...not necessarly in that order
KAYE RIVERCITY is offline   Reply With Quote
Old 08-29-2004, 01:54 PM   #12
Guest
 
Posts: n/a
Default

if building you own ,what size metal studs would you use? and how far about on center? thanks
  Reply With Quote
Old 08-29-2004, 09:29 PM   #13
Senior Member
 
Join Date: Jul 2004
Posts: 1,083
Default

.....what is the side panels made of on your truck Body.....that will determine "Z" channel or Studs and a number of other possibilities...LMK...It's easier than you think!....geof
__________________
women-food-money-naps...not necessarly in that order
KAYE RIVERCITY is offline   Reply With Quote
Old 08-29-2004, 10:28 PM   #14
Guest
 
Posts: n/a
Default

geof. I did some reading on spray-in-place polyurethane. Very interesting. One big advantage is that it seals much better than any panel type insulation. I believe this is the same thing used in refrigerator trucks.
  Reply With Quote
Old 08-30-2004, 12:51 PM   #15
Junior Member
 
Join Date: Apr 2004
Posts: 24
Default

Just found this,

High R Double Sided Foil Insulation: *Out performs R30 fiberglass batt insulation. Preferred over fiberglass blanket insulation in metal buildings. Our most versatile insulaton. Consistent 14.5 R value. Great for all climates. Strong recommedation!
The two layers of reflective foil that surrounds the 1/4- inch closed cell center, forms a radiant heat and vapor barrier.

Key Benefits:

Double-Sided Foil
Vapor Barrier
Radiant Barrier
Class A / Class 1 Fire Rating
Convenient flange tabs on sides
Provides 19 DB Soundproofing
Clean
Lightweight
Very Strong
Saves Money and Energy

http://www.steelbuildingsetc.com/default.asp

A 14.5 R value is very high for 1/4" material, wonder how good it really works?

Spray-in-place polyurethane is good but very expensive.
rwrr001 is offline   Reply With Quote
Old 08-31-2004, 12:00 AM   #16
Senior Member
 
Join Date: Jul 2004
Posts: 1,083
Default

....one of the issues that my partners and I are looking into is the spray in place poly foam business....we have been interested in this for 2 years now and haven't done a damn thing but send for information. I have a 2700 sqft house with SPF walls and combination foam board and fiberglass batt ceilings[R-30 walls and R-60 ceiling]....my HVAC costs are 25% of my neighbors....so the stuff works!....It's already paid for itself in the 5 years I have lived in this house by a factor of 3. Aside from that and the cost which is around $1.00 a board foot currently....the place is so quiet I can't hear what's going on outside-dog barking-[my coon hound]local police car siren on yelp till it's in front of the house....SPF is used in most trailers[reefer] but I use foam board because of the labor cost-I use Mexican drywallers-and bridge the joints with alum. tape that we use in the HVAC department.It has a R-factor the same as any polyisocynate foam of R-7 per inch then add the foil for radiant and air movement....1" foam board is $10.00 for a 4X8 at out cost and we have plenty of scrap....I have contacted the bubble wrap supplier and they can't give me any R-value ASME/ASHRE Certification....though I do use it on duct work at a cost of about 30 cents a linal foot...I have used it in my Volvo over the drivers seat and in the doors for some added insulation and infiltration control...My feeling is it is location specific....I haven't looked into it...the supplier told me not to use it around machinery as the vibration makes it break down quickly....we will see....geof
__________________
women-food-money-naps...not necessarly in that order
KAYE RIVERCITY is offline   Reply With Quote
Old 08-31-2004, 08:32 PM   #17
Guest
 
Posts: n/a
Default

The foil insulation that you describe sounds similar to the Reflectix brand. This is the type of insulation that Showhauler uses in their units.

I have used Reflectix in some house insulation situations. But I am not sure if I want that as the only insulation.

My requirements for insulation are different than most people's due to where I live. I live at 9,100 feet with regular trips on roads at 11,000 feet to 12,000 feet elevations. We have already had night time lows of 30 degrees. But we are still getting daytime highs of 70 degrees. Depending on the weather we might have snow skiing in 6 to 7 weeks.
  Reply With Quote
Old 08-31-2004, 10:53 PM   #18
Senior Member
 
Join Date: Jul 2004
Posts: 1,083
Default

.....cm:....I wish I could still ski-but the knees are shot along with a whole list of other broken-cracked-mis-aligned parts....so I have to watch it on tv...[which sucks]....anyway your coach will have to be almost superinsulated and air tight to keep your heat even through out and at a reasonable cost-also the isssue of an air exchanger to keep moisture and odors under control...my coonhound gets a little "fresh" in damp weather and I turn on the air to air heat exchanger to freshen up the house-or when I walk back in I start wondering if it's me or the dog?....anyway a system of air exchange will also have to be addressed-but it too must be controlable...Much more than a air change each 3 hours and your heating bill will shoot up....maybe you could just run it with a timer for short periods of time or when you have guests.....Interesting problem-give me a few days to think about it I'll get back to you on it when I have a proposal for you to think about. Assumptions: that the outside of the box is 30' Long X 8'6" wide by 7'6" high will give me a starting point-you can modify from there.....I'll consider both propane and electric heat...geof
__________________
women-food-money-naps...not necessarly in that order
KAYE RIVERCITY is offline   Reply With Quote
Old 09-01-2004, 05:22 PM   #19
Junior Member
 
Join Date: Apr 2004
Posts: 24
Default

Reflectix is not good, two layers of alum foil and plastic with air can not do much. High R Double Sided Foil Insulation sounds like it is filled with tiny plastic balls. A 14.5 R value sounds very high for just 1/4" material and the price is close to Reflectix. I would not trust either one.

Check out the tests at: http://www.glacierbay.com/Instresult.asp

Reflectix has an Actual "R" Value of 0.67!

Vacuum Panel insulation has an Actual "R" Value of 24.06 at 1 inch, wonder how much it costs?

They have a Loose-Fill Insulation that is sprayed on, they add a little glue and water to it. This type of insulation is the best for sound deadening. Foam is rigid and it can carry sound threw the walls.
rwrr001 is offline   Reply With Quote
Old 09-01-2004, 10:10 PM   #20
Senior Member
 
Join Date: Jul 2004
Posts: 1,083
Default

....loose fill with glue or without-settles and has issues with moisture and MOLD....we no longer use shreaded newspaper" in walls because of the liability issue.[as per our insurer] Bubblewrap has No ASHRE certification that I have found. SPF and Foam board are the only products that I'd use for Coach building. Spray can foam is good also for small spaces. The issue of noise can be overcome by using "white noise generators"- I use one personally in an electrostatic air cleaner made by Crystal-aire....It's the same thing as a SMOKETTRE for use in bars and restraunts to keep the cigarette smoke form being overpowering....as far as external noise is concerned...pick a good campground that enforces the rules....No noise after 11pm...Additionally limit windows-glass it is like drum head-reflects the vibrations....SPF and Foam board also have fire an smoke ratings which many insulations don't have as the [RVAA] associations are a little lax in enforcement......as far as an insulation that is light weight and limited thickness we have been looking at the space shuttle tiles-but there isn't a manufacture that produces it in a 4X8 sheet that we have found....when there as a market for the insulation we will carry it-as for now your options are rather limited and the most cost effective/safe/durable/installable is SPF or Polyisonate Foam Board......If there is anything out on the market I will have a hundred salesmen knocking at the door....geof
__________________

__________________
women-food-money-naps...not necessarly in that order
KAYE RIVERCITY 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 On
Pingbacks are On
Refbacks are On


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:45 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.