Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > iRV2.com General Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 07-27-2015, 12:06 PM   #1
Senior Member
 
reubenray's Avatar
 
Newmar Owners Club
Join Date: Feb 2012
Location: Lake Osprey RV Resort, Elberta, AL
Posts: 2,740
Insulation in Cabinets?

I have read before where hard foam insulation was put into the ceiling and the outside wall of the cabinets to fight the heat some. How was y'all securing it? I am looking at this product Shop Pactiv R4 Unfaced Polystyrene Foam Board Insulation (Common: 0.75-in x 4-ft x 8-ft; Actual: 0.75-in x 4-ft x 8-ft) at Lowes.com.
__________________

__________________
Raymond, Dee Dee and Sophie (Yorkie)
2013 Tiffin Allegro (Sold) - 2017 Ventana LE 4037 -
2016 Chevrolet Equinox - V6 - AWD
reubenray is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-27-2015, 12:10 PM   #2
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,313
Don't think I've heard of anyone using anything that thick. It would take up a lot of space in the cabinets!

I think most folks that have insulated the cabinets have used the Reflectix. I plan to do that soon!
__________________

__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is online now   Reply With Quote
Old 07-27-2015, 01:45 PM   #3
Senior Member
 
reubenray's Avatar
 
Newmar Owners Club
Join Date: Feb 2012
Location: Lake Osprey RV Resort, Elberta, AL
Posts: 2,740
Quote:
Originally Posted by MSHappyCampers View Post
Don't think I've heard of anyone using anything that thick. It would take up a lot of space in the cabinets!

I think most folks that have insulated the cabinets have used the Reflectix. I plan to do that soon!
Is this what you are referring to? If so how is it installed? We have moved our food over to the cooler side to keep the heat away from it.

Shop Reflectix R21 16-in x 25-ft Unfaced Reflective Roll Insulation at Lowes.com
__________________
Raymond, Dee Dee and Sophie (Yorkie)
2013 Tiffin Allegro (Sold) - 2017 Ventana LE 4037 -
2016 Chevrolet Equinox - V6 - AWD
reubenray is offline   Reply With Quote
Old 07-27-2015, 02:18 PM   #4
Senior Member
 
336muffin's Avatar
 
Join Date: Apr 2011
Posts: 2,569
I have used Reflectix in ALL the overhead cabinets and all lower cabinets as well. Colsets, chest of drawers in bedroom and kitchen. This simple, cheap and easy install has made a difference that is worth it. If you oversize your cuts by a inch it will self support. If it does sag we used a few thumbtacks. Do the big spaces first and work down so to use material better.
__________________
American Tradition 42R-Cadillac SRX Blue Ox Koni 5050XL MCD Scangauge D Samsung rf197
Fulltime since 2012
336muffin is offline   Reply With Quote
Old 07-27-2015, 02:20 PM   #5
Senior Member
 
336muffin's Avatar
 
Join Date: Apr 2011
Posts: 2,569
Quote:
Originally Posted by reubenray View Post
Is this what you are referring to? If so how is it installed? We have moved our food over to the cooler side to keep the heat away from it.

Shop Reflectix R21 16-in x 25-ft Unfaced Reflective Roll Insulation at Lowes.com
Yes that is it but we bought 4ft x 25ft
__________________
American Tradition 42R-Cadillac SRX Blue Ox Koni 5050XL MCD Scangauge D Samsung rf197
Fulltime since 2012
336muffin is offline   Reply With Quote
Old 07-27-2015, 03:19 PM   #6
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,313
Quote:
Originally Posted by reubenray View Post
Is this what you are referring to? If so how is it installed? We have moved our food over to the cooler side to keep the heat away from it.

Shop Reflectix R21 16-in x 25-ft Unfaced Reflective Roll Insulation at Lowes.com

Yep, that's it! Great stuff with a lot of uses! You can use something like RV Goop to stick the pieces in place, or some folks staple it!
__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is online now   Reply With Quote
Old 07-27-2015, 03:19 PM   #7
Community Administrator
 
Clifftall's Avatar


 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Aug 2009
Posts: 29,123
I saw Muffins installation at a rally and copied it . It worked great and didn't take up a lot if room at all.
__________________


Cliff,Tallulah and Buddy ( 1999-2012 )
Clifftall is offline   Reply With Quote
Old 07-27-2015, 03:36 PM   #8
Senior Member
 
bdpreece's Avatar
 
Monaco Owners Club
Join Date: Mar 2000
Location: Woodburn Oregon USA
Posts: 2,596
I used 1/2" insulation board R-Tech 1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing-320810 - The Home Depot

I cut it about a 1/4 inch larger than the area I was insulating and pushed it in at an angle forcing it to compress as I put it in place on the top of the cabinets. I then cut the back pieces again about 1/4 inch larger than the area put the top against the back wall and forced the bottom into the back wall. They have been there about a year now and have not fallen out yet.
__________________
Brian, Loretta & Daisy (Golden Retriever)
2008 Holiday Rambler Endeavor 40 PDQ , ISL 400
2014 Ford Explorer toad
bdpreece is offline   Reply With Quote
Old 07-27-2015, 03:41 PM   #9
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,313
Quote:
Originally Posted by bdpreece View Post
I used 1/2" insulation board R-Tech 1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing-320810 - The Home Depot

I cut it about a 1/4 inch larger than the area I was insulating and pushed it in at an angle forcing it to compress as I put it in place on the top of the cabinets. I then cut the back pieces again about 1/4 inch larger than the area put the top against the back wall and forced the bottom into the back wall. They have been there about a year now and have not fallen out yet.

Brian, only problem with that is the R-Value. It is only 1.93. The Reflectix R-Value is R3 to R21, depending on application.
__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is online now   Reply With Quote
Old 07-27-2015, 04:08 PM   #10
Senior Member
 
iRV2 No Limits Club
Join Date: May 2011
Location: Tempe, AZ
Posts: 1,833
Quote:
Originally Posted by MSHappyCampers View Post
Brian, only problem with that is the R-Value. It is only 1.93. The Reflectix R-Value is R3 to R21, depending on application.
The realistic minimum R-value for Reflectix is actually more like R1.2. The only way to get higher R-values from reflective insulation (technically, it is a radiant barrier) is to have a vented air gap on both sides of the radiant barrier ranging from 3/4" to 1 1/2" or more. The higher values are actually an assembly R-value. The higher R-values claims for radiant barriers have been a huge scam that the Feds have only recently started cracking down on.
__________________
LadyFitz... is offline   Reply With Quote
Old 07-27-2015, 04:24 PM   #11
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,313
Quote:
Originally Posted by LadyFitz... View Post
The realistic minimum R-value for Reflectix is actually more like R1.2. The only way to get higher R-values from reflective insulation (technically, it is a radiant barrier) is to have a vented air gap on both sides of the radiant barrier ranging from 3/4" to 1 1/2" or more. The higher values are actually an assembly R-value. The higher R-values claims for radiant barriers have been a huge scam that the Feds have only recently started cracking down on.

I would assume that the R-Value with no air gap would be the R3 that they show. where do you get the R1.2 figure?
__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is online now   Reply With Quote
Old 07-27-2015, 04:43 PM   #12
Senior Member
 
aauummm's Avatar


 
Join Date: Oct 2013
Location: Altoona, Iowa
Posts: 1,590
Quote:
Originally Posted by MSHappyCampers View Post
I would assume that the R-Value with no air gap would be the R3 that they show. where do you get the R1.2 figure?
Actually the R value with no air gap is 1.1 per layer according to Reflectix website (scroll down to the very last line at the bottom of the page). I'll go with the foam board insulation that has an R4 for 3/4 in thick.

About Reflective Technology | What About R-values?

Stay Away from Foil-Faced Bubble Wrap | GreenBuildingAdvisor.com

In places where I've got the space, I may go with this R-6 stuff:
Rmax Thermasheath 3 R-6 1 in. x 4 ft. x 8 ft. Polyiso Rigid Foam Insulation Board-787264 - The Home Depot
__________________
2010 Itasca Sunova 33C, mucho mods
2011 Honda CRV, 2004 Rubicon (mucho mods)
aauummm is offline   Reply With Quote
Old 07-27-2015, 04:59 PM   #13
Senior Member
 
iRV2 No Limits Club
Join Date: May 2011
Location: Tempe, AZ
Posts: 1,833
Quote:
Originally Posted by aauummm View Post
Actually the R value with no air gap is 1.1 per layer according to Reflectix website (scroll down to the very last line at the bottom of the page). I'll go with the foam board insulation that has an R4 for 3/4 in thick.

About Reflective Technology | What About R-values?

Stay Away from Foil-Faced Bubble Wrap | GreenBuildingAdvisor.com
That covers it better than I could. Thanks for chiming in!
__________________
LadyFitz... is offline   Reply With Quote
Old 07-27-2015, 05:03 PM   #14
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,313
Quote:
Originally Posted by aauummm View Post
Actually the R value with no air gap is 1.1 per layer according to Reflectix website (scroll down to the very last line at the bottom of the page). I'll go with the foam board insulation that has an R4 for 3/4 in thick.

About Reflective Technology | What About R-values?

Stay Away from Foil-Faced Bubble Wrap | GreenBuildingAdvisor.com

Actually in places where I've got the space, I may go with this R-6 stuff:

Rmax Thermasheath 3 R-6 1 in. x 4 ft. x 8 ft. Polyiso Rigid Foam Insulation Board-787264 - The Home Depot

Thanks, that's good info! I'm still wondering though if this might be the best thing to insulate the back wall (next to the outside RV wall) of inside storage cabinets. I don't want to use the thick foam insulation.
__________________

__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is online now   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Insulation in front cap Jamie65 Tiffin Motorhomes Owners Forum 4 08-04-2015 02:15 PM
Best Cockpit Insulation? Sky Pilot Class A Motorhome Discussions 0 06-08-2015 11:38 AM
Spray foam insulation Old Sarge Class A Motorhome Discussions 4 05-29-2014 07:57 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:36 PM.


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