|
03-19-2018, 09:51 PM
|
#1
|
New Member
Join Date: Mar 2018
Posts: 6
|
DRICore insulation/subfloor combination?
We are considering options for insulation and subfloor and are familiar with the use of ridgid 2" insulation with a framing grid. We found DRIcore insulation home improvement websites. Our plan is to be using our conversion in the summer months, primarily in the Midwest of the US for 3-7 day trips.
The R-Value is 3 which would be likely enough for our needs and also would reduce space loss. The subfloor is designed for mold prevention on concrete floors, however we are wondering if anyone has had experience using such a combination subfloor like this.
It is currently between $1.50-1.75 per square foot and would drastically cut down floor installation time and overall cuts made.
The idea would be to remove the current stock rubber and subfloor, then remove rust, seal with rust-o-leum, fill in holes, then apply the DRIcore floor.
Please let us know what you think!
|
|
|
03-19-2018, 11:47 PM
|
#2
|
Skoolie
Join Date: Jul 2017
Location: Mainland Mexico
Posts: 125
Year: 2006
Chassis: IC bus
Engine: VT365
Rated Cap: 35C24A
|
Interested to see how this works out for you.
|
|
|
03-20-2018, 05:16 AM
|
#3
|
Bus Nut
Join Date: Mar 2015
Location: hills of sw virginia
Posts: 889
Year: 1996
Chassis: thomas
Engine: 8.3 cummins
Rated Cap: 11 window
|
looks expensive, i used 1" rigid with 3/4 t&g osb over that with fantastic results. allot of things we do are not the best but good enough. this product would cost more than many people here pay for there bus.
|
|
|
03-20-2018, 05:53 AM
|
#4
|
Skoolie
Join Date: Feb 2018
Location: Tennessee
Posts: 171
Year: 2004
Coachwork: Thomas
Chassis: 40' Saf-T-Liner MVP ER
Engine: CAT 3126 7.2L
|
//DRIcore Subfloor has an R-Value of 1.7//
I’m getting nearly 3x this R value from 1” of rigid foam board
Sent from my iPhone using Tapatalk
|
|
|
03-20-2018, 09:30 AM
|
#5
|
Bus Geek
Join Date: Nov 2016
Posts: 2,775
|
With a covering that spreads the wait, and maybe some strategic support inserts for furniture, many rigid foam boards have plenty enough compression strength to not require any "support grid".
Polyiso is one, and has best R-value.
The base floor must be sound and level of course.
For a permanent install, two-part spray foam in a thin layer underneath and to fill gaps, whole layer becomes one unit, still has some flex. But then a waterproof vapour barrier before the top layer, don't allow moisture / flooding to get down there.
Just spitballing more research needed
|
|
|
03-20-2018, 10:11 AM
|
#6
|
Bus Geek
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
|
Quote:
Originally Posted by john61ct
Polyiso is one, and has best R-value.
|
Go read the last few posts in my Build Thread. Some major doubt has been cast on Polyiso v. XPS.
|
|
|
03-20-2018, 11:30 AM
|
#7
|
Bus Geek
Join Date: Nov 2016
Posts: 2,775
|
Need a link
|
|
|
03-20-2018, 11:34 AM
|
#8
|
Bus Geek
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
|
Quote:
Originally Posted by john61ct
Need a link
|
It's right there in my sig
|
|
|
03-20-2018, 11:46 AM
|
#9
|
Skoolie
Join Date: Feb 2018
Location: Tennessee
Posts: 171
Year: 2004
Coachwork: Thomas
Chassis: 40' Saf-T-Liner MVP ER
Engine: CAT 3126 7.2L
|
//It seems that the standard test for insulation is conducted at 75F. At that temp. the polyiso outperforms the extruded. That, however, is not the end of the story.
As the temperature falls, so does the R-Value of polyiso, and it can fall from 6.0 per inch right down to 2.0 per inch.
Conversely, the R-Value of extruded polystyrene is inversely proportional to temperature. That is, as the temp falls the R-Value of the XPS rises.
So when the R-Max has fallen to 2.0. the pink stuff has risen to 6.0 per inch.//
Sent from my iPhone using Tapatalk
|
|
|
03-20-2018, 11:50 AM
|
#10
|
Bus Geek
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
|
Quote:
Originally Posted by Mgulley82
//It seems that the standard test for insulation is conducted at 75F. At that temp. the polyiso outperforms the extruded. That, however, is not the end of the story.
As the temperature falls, so does the R-Value of polyiso, and it can fall from 6.0 per inch right down to 2.0 per inch.
Conversely, the R-Value of extruded polystyrene is inversely proportional to temperature. That is, as the temp falls the R-Value of the XPS rises.
So when the R-Max has fallen to 2.0. the pink stuff has risen to 6.0 per inch.//
Sent from my iPhone using Tapatalk
|
When I wrote that it seemed to go against the conventional wisdom, so it is posted for information only and people need to satisfy themselves as to what they use.
|
|
|
03-20-2018, 11:51 AM
|
#11
|
Bus Geek
Join Date: Nov 2016
Posts: 2,775
|
Quote:
Originally Posted by Twigg
It's right there in my sig
|
Can't see any sigs from here, why I asked.
|
|
|
03-20-2018, 11:53 AM
|
#12
|
Bus Geek
Join Date: Nov 2016
Posts: 2,775
|
Quote:
Originally Posted by Mgulley82
//It seems that the standard test for insulation is conducted at 75F. At that temp. the polyiso outperforms the extruded. That, however, is not the end of the story.
As the temperature falls, so does the R-Value of polyiso, and it can fall from 6.0 per inch right down to 2.0 per inch.
Conversely, the R-Value of extruded polystyrene is inversely proportional to temperature. That is, as the temp falls the R-Value of the XPS rises.
So when the R-Max has fallen to 2.0. the pink stuff has risen to 6.0 per inch.//
Sent from my iPhone using Tapatalk
|
Easy, 1/2" of XPS layer on the outside, then the rest in polyiso.
Proven best combo in coolroom / icebox testing.
|
|
|
03-20-2018, 11:53 AM
|
#13
|
Bus Geek
Join Date: Nov 2016
Posts: 2,775
|
Only necessary for those planning to camp in the snow, IMO
|
|
|
03-20-2018, 11:54 AM
|
#14
|
Bus Geek
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
|
Quote:
Originally Posted by john61ct
Can't see any sigs from here, why I asked.
|
http://www.skoolie.net/forums/f13/th...tml#post260010
Post #255
|
|
|
03-20-2018, 11:57 AM
|
#15
|
Bus Geek
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
|
Quote:
Originally Posted by john61ct
Easy, 1/2" of XPS layer on the outside, then the rest in polyiso.
Proven best combo in coolroom / icebox testing.
|
That sounds like a decent compromise.
So in the end I went with 1 1/2" of XPS. I am layering 1" and 1/2" and I found that the XPS will bend to the curve in the roof, which is handy.
|
|
|
03-28-2018, 03:34 AM
|
#16
|
New Member
Join Date: Mar 2018
Posts: 6
|
Clarification
To clarify,
We were referencing DRICore Subfloor R+ and were considering its use primarily for the thickness being minimal and its also for summer applications in mild Midwest summers. (DRIcore Subfloor R+ has an R-value of 3 as per its specs.
|
|
|
03-28-2018, 06:59 AM
|
#17
|
Bus Crazy
Join Date: Nov 2011
Location: Sault Ste. Marie, Ontario
Posts: 1,782
Year: 1997
Coachwork: Thomas
Chassis: B3800 Short bus
Engine: T444E
Rated Cap: 36
|
DRICore Subfloor R+ appears to be simply 1/2" XPS foam attached to 1/2" OSB.
You can do that yourself with better results, in my opinion. I would opt for more XPS foam underfoot. Can you sacrifice the headroom and put in 1" or at least 3/4" XPS?
The subject of installing subfloors comes up a lot around here. My opinion is that the best method is to glue the XPS to the floor and the plywood (not OSB) to the XPS. No framework. No screws. Use weight (bricks, buckets of water) to keep the layers tightly sandwiched while the PL Premium adhesive cures.
|
|
|
03-28-2018, 07:47 AM
|
#18
|
Bus Geek
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
|
Quote:
Originally Posted by jazty
DRICore Subfloor R+ appears to be simply 1/2" XPS foam attached to 1/2" OSB.
You can do that yourself with better results, in my opinion. I would opt for more XPS foam underfoot. Can you sacrifice the headroom and put in 1" or at least 3/4" XPS?
The subject of installing subfloors comes up a lot around here. My opinion is that the best method is to glue the XPS to the floor and the plywood (not OSB) to the XPS. No framework. No screws. Use weight (bricks, buckets of water) to keep the layers tightly sandwiched while the PL Premium adhesive cures.
|
This is almost exactly what I've done.
I had the benefit of being able to leave the OEM plywood in. I added 1 1/2" XPS (layered, 1" + 1/2") then a layer of 5/8" plywood. No glue at all.
Because the plywood was not absolutely flat I have screwed right through into the bottom layer of ply, just to hold it flat. Building the rest of the interior on top will finish the job of keeping the floor stable.
Final calculated ceiling height will be about 74 1/2". I had the benefit of starting with around 78".
|
|
|
03-28-2018, 08:01 AM
|
#19
|
Skoolie
Join Date: Feb 2018
Location: Tennessee
Posts: 171
Year: 2004
Coachwork: Thomas
Chassis: 40' Saf-T-Liner MVP ER
Engine: CAT 3126 7.2L
|
Quote:
Originally Posted by jazty
DRICore Subfloor R+ appears to be simply 1/2" XPS foam attached to 1/2" OSB.
You can do that yourself with better results, in my opinion. I would opt for more XPS foam underfoot. Can you sacrifice the headroom and put in 1" or at least 3/4" XPS?
The subject of installing subfloors comes up a lot around here. My opinion is that the best method is to glue the XPS to the floor and the plywood (not OSB) to the XPS. No framework. No screws. Use weight (bricks, buckets of water) to keep the layers tightly sandwiched while the PL Premium adhesive cures.
|
This is exactly what we plan to do
We have prepped our metal floor and plan to glue XPS directly to the metal floor then glue plywood to the XPS.
No screws or hardware
We are then gluing down a single sheet layer of vinyl. Will likely leave a little bit of the vinyl rolled up the edges of the wall in wet areas like kitchen and bathroom which will end up being hidden behind things anyway
Then everything will be secured to the plywood layer during frame in on top of the vinyl
Sent from my iPhone using Tapatalk
|
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|