Confusing insulation numbers

[BudnDonna]

Hello folks,
I am back for yet another question. A few months back I printed out the information on the Ashland and the Newport. I just went back and looked at that information versus what's on the website now and see that the R values on the insulation installed have gone down dramatically. Does anyone know what is going on with this? Which values should I assume are correct? A good example is the Ashland which originally had a wall value of 11 and it is now 7, the floor was 41 and it is now 18, and the roof was 38 and is now 23. I'm a Little confused by this, have they reduce the insulation they're using for some reason or is it something else?
Thanks once again! Bud

Sent from my SM-T700 using Tapatalk

 

[justafordguy]

I have always questioned the R values listed on the web site, they seem inconsistent. If I were you I would call Heartland and speak with the Landmark manager.

 

[TxCowboy]

I have always questioned the R values listed on the web site, they seem inconsistent. If I were you I would call Heartland and speak with the Landmark manager.

And please post the results of that conversation here.

 

[GOTTOYS]

I asked the same question awhile back and never did get an answer...Something's fishy???...Don

 

[justafordguy]

Hey Don, who did you ask?

 

[BudnDonna]

Update. .. I have called the landmark general Mgr Andy and left a message. I will update again when/if I hear back from him.

Sent from my SM-T700 using Tapatalk

 

[GOTTOYS]

Hey Don, who did you ask?

I posted it on this forum about a month back after I noticed it on the Heartland site. Jim B. was going to get back to me but he probably forgot and I forgot to ask him the last time I saw him. No big deal just curious....Don

 

[TravelTiger]

It could be a RVIA standardized measurement to compare apples to apples across the industry? That would be my guess why it would go down.


Sent from my iPhone using Tapatalk

 

[BudnDonna]

Hello All,
After three calls over as many weeks I have finally gotten an answer on the sudden drop in R values for the Landmark series. On my third try I finally received a return call from a pleasant fellow named Chris. I asked him my questions and since he was newly moved into the Landmark series, he said he would find out and call me back. He was very prompt in doing so and here is the scoop on the Insulation values. Apparently they are a miss print on the web persons part (perhaps numbers from a light weight model accidentally switched to the Landmark page). In any case, they will be corrected within a week or so and all will be right with the world once again!
Safe Travels and hope to meet many of you in Hershey next weekend.... Bud and Donna

 

[TxCowboy]

Bud, did he tell you what the corrected numbers would be? Nevertheless, updating the HL website will be important so that folks understand what they are buying.

Thanks for helping correct this information.

 

[GOTTOYS]

Hello All,
After three calls over as many weeks I have finally gotten an answer on the sudden drop in R values for the Landmark series. On my third try I finally received a return call from a pleasant fellow named Chris. I asked him my questions and since he was newly moved into the Landmark series, he said he would find out and call me back. He was very prompt in doing so and here is the scoop on the Insulation values. Apparently they are a miss print on the web persons part (perhaps numbers from a light weight model accidentally switched to the Landmark page). In any case, they will be corrected within a week or so and all will be right with the world once again!
Safe Travels and hope to meet many of you in Hershey next weekend.... Bud and Donna

It will be VERY interesting to see how all this pans out...Don

 

[BudnDonna]

He said that the numbers originally posted were correct. I have the page I printed a month or so ago and when I get back to the house I will post them so we all can see if they truly return as stated.

Sent from my SM-T700 using Tapatalk

 

[BudnDonna]

Hi Folks,
Here are the original insulation R values from when I printed them. .. Wall -R 11 , Floor -R 41, Roof -38. Hopefully they will clear this up soon.
Bud

Sent from my SM-T700 using Tapatalk

 

[2togo]

We have been going back and forth trying to decide between a Landmark Syracuse and Bighorn 3270RS. After comparing their insulation values, I came to this site to do some research and now I am really confused. The landmark states the walls are R7, the floor R18, and the roof R23. The Bighorn states the walls are R11, the floor R38, and the roof R34. Does this mean the Bighorn is actually better insulated than the Landmark? I'll be calling Heartland in the morning and hope to get an answer. So confusing!!

 

[danemayer]

We have been going back and forth trying to decide between a Landmark Syracuse and Bighorn 3270RS. After comparing their insulation values, I came to this site to do some research and now I am really confused. The landmark states the walls are R7, the floor R18, and the roof R23. The Bighorn states the walls are R11, the floor R38, and the roof R34. Does this mean the Bighorn is actually better insulated than the Landmark? I'll be calling Heartland in the morning and hope to get an answer. So confusing!!

I just went to the Syracuse extended specs on the HeartlandRVs.com website. R11/R38/R34 as shown in this screencap.

 

[avvidclif]

As you can tell by the chart the RV industry plays fast and loose with R-Values. R38 with the best insulation would be 10" thick.

R-value of Materials and Depths

Material		3 1/2"	5 1/4"	10"	12"	15"
Fiberglass (batt)	3.1 - 3.4	10.8 - 11.9	16.3 - 17.8	31.0 - 34.0	37.2 - 40.8	46.5 - 51.0
Fiberglass blown (attic)	2.2 - 4.3	7.7 - 15.0	11.5 - 22.6	22.0 - 43.0	26.4 - 51.6	33.0 - 64.5
Fiberglass blown (wall)	3.7 - 4.3	12.9 - 15.0	19.4 - 22.6	37.0 - 43.0	44.4 - 51.6	55.5 - 64.5
Mineral Wool (batt)	3.1 - 3.4	10.8 - 11.9	16.3 - 17.8	31.0 - 34.0	37.2 - 40.8	46.5 - 51.0
Mineral Wool blown (attic)	3.1 - 4.0	10.8 - 14.0	16.3 - 21.0	31.0 - 40.0	37.2 - 48.0	46.5 - 60.0
Mineral Wool blown (wall)	3.1 - 4.0	10.8 - 14.0	16.3 - 21.0	31.0 - 40.0	37.2 - 48.0	46.5 - 60.0
Cellulose blown (attic)	3.2 - 3.7	11.2 - 12.9	16.8 - 15.0	32.0 - 37.0	38.4 - 44.4	48.0 - 55.5
Cellulose blown (wall)	3.8 - 3.9	13.3 - 13.6	19.9 - 20.8	38.0 - 39.0	45.6 - 46.8	57.0 - 58.5
Polystrene Board	3.8 - 5.0	13.3 - 17.5	19.9 - 26.2	38.0 - 50.0	45.6 - 60.0	57.0 - 75.0
Polyurethane Board	5.5 - 6.5	19.2 - 22.7	28.9 - 34.1	55.0 - 65.0	66.0 - 78.0	82.5 - 97.5
Polyisocyanurate (foil-faced)	5.6 - 8.0	18.2 - 28.0	29.4 - 42.0	56.0 - 80.0	67.2 - 96.0	84.0 - 120.0
Open Cell Spray Foam	3.5 - 3.6	12.2 - 12.6	18.4 - 18.9	35.0 - 36.0	42.0 - 43.2	52.5 - 54.0
Closed Cell Spray Foam	6.0 - 6.5	21.0 - 22.7	31.5 - 34.1	60.0 - 65.0	72.0 - 78.0	90.0 - 97.5

 

[danemayer]

As you can tell by the chart the RV industry plays fast and loose with R-Values. R38 with the best insulation would be 10" thick.

If I understand the chart, R38 roof using foam board of some type, which is what I think is used, has to be between 5-1/4 and 10". I think that about matches what they use in the roof of LM/BH/BC.

So what's the "fast and loose" comment based on?

 

[SNOKING]

So what's the "fast and loose" comment based on?

Maybe recessed ceiling fans with no insulation at all? The 2-2.5" hole in the side of my rear AC units return air plenum off into a void in the attic with no insulation in site? For roof insulation to be effective in needs consistent from front to back and side to side. From what I have seen so far working on my ducts and AC units, there appears to be a shortage of uniform construction that would lead to a high insulation rating for the roof in general.

Do not get me wrong, we love the new trailer.

RV's are not however inspected like a home for correct construction based of building standards and codes. If they were, then most would be beyond the price people would be willing to pay.



Here is a look into the living room AC return duct ahead of the forward register looking towards the front of the trailer to the dead end at the bathroom sky light. Notice to the right that the fantastic fan installation compromised the side of the duct. I installed a section of foam pipe installation(that is 2.5" outside diameter and 9.5" long) just ahead of this register so that this duct extension is no longer part of the system.

Also note the gap along the bottom edge of the duct on the right side. I see this in other section of the ducting, in that there is a general lack of integrity to the ducts in many areas.



Chris

 

[2togo]

Thanks for the replies. I'm glad to see the higher Syracuse numbers this morning as those numbers make alot
more sense. As stated in a previous post, the lower numbers that were posted must have been an error.

 

[avvidclif]

If I understand the chart, R38 roof using foam board of some type, which is what I think is used, has to be between 5-1/4 and 10". I think that about matches what they use in the roof of LM/BH/BC.

So what's the "fast and loose" comment based on?

Your roof isn't 10" thick.