Fiberglass RV

Fiberglass RV (http://www.fiberglassrv.com/forums/)
-   Problem Solving | Owners Helping Owners (http://www.fiberglassrv.com/forums/f55/)
-   -   Best Adhesive for Reflectix (http://www.fiberglassrv.com/forums/f55/best-adhesive-for-reflectix-67249.html)

hotrodaj31 11-16-2014 09:35 PM

Best Adhesive for Reflectix
 
I have completely gutted my Amerigo and now I am ready to insulate with reflectix. So what is the best adhesive/glue to attach the reflectix to the bare fiberglass? is there a special process that I need to know to properly adhere the reflectix to the fiberglass? I also will be attaching a marine grade carpet with a rubber backing to the reflectix as my final wall/celling treatment. So of course what adhesive/glue would be best to use for that application? Any help you can lend would be awesome!!

floyd 11-16-2014 10:46 PM

Quote:

Originally Posted by hotrodaj31 (Post 492405)
I have completely gutted my Amerigo and now I am ready to insulate with reflectix. So what is the best adhesive/glue to attach the reflectix to the bare fiberglass? is there a special process that I need to know to properly adhere the reflectix to the fiberglass? I also will be attaching a marine grade carpet with a rubber backing to the reflectix as my final wall/celling treatment. So of course what adhesive/glue would be best to use for that application? Any help you can lend would be awesome!!

3M Super 77 adhesive is good and I think it is what Scamp uses (or equivalent) You should call them and ask...(800) 346-4962

D White 11-17-2014 09:34 AM

My experience is that the carpet is too heavy and will pull the glued reflectix off the ceilings and walls, if you can find something to get both of them to stick in the first place. Best to use light covering over the reflectix or just the carpet.....ymmv

floyd 11-17-2014 09:54 AM

Quote:

Originally Posted by D White (Post 492453)
My experience is that the carpet is too heavy and will pull the glued reflectix off the ceilings and walls, if you can find something to get both of them to stick in the first place. Best to use light covering over the reflectix or just the carpet.....ymmv

Ozite will work. Its sorta like in between carpet and fabric with a bias toward carpet.

hotrodaj31 11-17-2014 02:25 PM

That is my biggest fear the weight of the carpet pulling down both! I also question if the R factor of the reflectix is enough to go through the hassle of trying to adhere both reflectix and carpet. The carpet is a nice rubber backed marine grade. I am not planning on any cold weather trips but do expect to camp in night in the lower 40's. I am wondering if a commercial grade carpet glue would work or is that to aggressive.

MyronL 11-17-2014 03:38 PM

When I replaced the strip of ceiling carpet on my '81 Burro the carpeting was left over remnants from a new house install. The adhesive I used on the ceiling was contact cement. Never had a problem.

Jon Vermilye 11-17-2014 03:43 PM

I also used contact cement. I tried the water based first, but found it didn't work. Ended up with the standard flammable stuff...

Darwin Maring 11-17-2014 04:02 PM

Contact Cement like Jon used.
But: Make sure it does not eat up the reflectix. Do a test before you go all in.

john madill 11-17-2014 05:13 PM

Reflectix is on sale.....
 
2 Attachment(s)
Saw it in the Menard's ad in yesterday's Sunday newspaper.

I put some in my Compact Jr this fall. It's very easy to work with. My walls were nice but bare fiberglass.

Nothing had ever been glued to the walls as far as I could see. I preferred installing it without making it permanent.

I used heavy duty adhesive-backed Velcro cut into squares spaced about the back of each piece of Reflectix I cut.

The Velcro is pretty expensive. For the final few pieces I used heavy duty double-sided carpet tape with fiberglass reinforcing. It was about $10 for a 75' roll and seemed to work very well. I used several strips running in each direction on the back of each piece of Reflectix.

But I'm sure it would not be strong enough to hold both the Reflectix AND carpet. I did find a nice outdoor carpet at Menard's that had a smooth vinyl back that allowed the use of the double-sided tape and put some of the carpet on the upper wall of the camper.

The carpet came in a nice tan color and was only .34 cents a square foot. It probably wouldn't stand up to much foot traffic but seemed to help on the walls.

When my camper is out in the full sun the ceiling and walls get VERY hot to the touch. And when it's early morning the walls can be very cold and damp to the touch.

But with the Reflectix in place (and the carpet) the walls were very comfortable

In the spring I'll probably cover the Reflectix with a lightweight fabric

Roger C H 11-17-2014 07:39 PM

The problem with Reflectix
 
You must have a dead air space on one or both sides in order to obtain any reflective insulating benefit.
From the Reflectix website:

What if There is No Air Space Present on Either Side of the Product?
No Air Space = No Reflective Insulation Benefit
(An R-1.1 is provided from the product itself for the Reflective/Double Bubble material.) :eek:

About Reflective Technology | Performance Information

MyronL 11-17-2014 07:49 PM

Also, unless glued to the outside it can't reflect anything. :p

hotrodaj31 11-18-2014 07:42 AM

John Thanks for the tip on the sale at Menard's I will be stopping and picking up all my supplies for the weekend. Funny I am using the exact same material reflectix and carpet same color carpet with the vinyl backing. Menard's is the one stop shop for anything I do and the wife love going LOL So you used Velcro to attach the reflectix but what did you use to adhere the carpet to reflectix....The double sided carpet tape? I think I will use the contact cement others have suggested to adhere the reflectix to fiberglass and try the carpet tape.

floyd 11-18-2014 11:34 AM

Quote:

Originally Posted by Roger C H (Post 492568)
You must have a dead air space on one or both sides in order to obtain any reflective insulating benefit.
From the Reflectix website:

What if There is No Air Space Present on Either Side of the Product?
No Air Space = No Reflective Insulation Benefit
(An R-1.1 is provided from the product itself for the Reflective/Double Bubble material.) :eek:

About Reflective Technology | Performance Information

I think There may be some misunderstanding of what appears to be presented as overall R-Value of reflextix. I think the 1.1 is the only the "reflective" value without an air space.
Overall R-Value (coduction,convection, radiation and reflection) must be much higher just based on observation and use of all sorts of fiberglass trailers with and without insulation of different types.
The ratfur system in the Scamp shows itself to be very effective in both heat and cold. Much more so than its predecessor or much of its competition.

I have slept in fiberglass trailers with no insulation and it is not much more than a windbreak in the cold and it is an OVEN in the heat.
There is apparently a LOT more than a 1.1 overall R-value with reflextix/ratfur system installed.

Heretofore I have seen reflextix touted as anywhere from 11 to 15 overall R-value when installed with the rafur in a Scamp. Simple observation seems to confirm this.
One last observation, when sleeping in a modern Scamp in cold weather, feel the cold Cascading from the windows while the walls are warm and comfortable to the touch.
Science can be persuasive even with an incomplete understanding...
but stll, Bumble bees can actually fly.^_^

john madill 11-18-2014 03:36 PM

i'm not putting carpet atop the Reflectix.....
 
1 Attachment(s)
I put Reflectix on the sidewall of my Compact Jr up to the top of the window.

From the top of the window the sidewall curves quickly and turns into the ceiling.

from the top of the window and up I am putting the carpet alone.

I'm using the double-sided tape for the carpet. Most of the Reflectix was put up with the heavy duty Velcro.

the two pieces of Velcro create about a 1/4" air space between the Reflectix and the wall.

next spring I plan to buy one of the "no-touch" thermometers so I can read the temps at the Reflectix, the carpet, and a piece of bare wall and see how much affect I'm getting from the insulation.


If you are buying Reflectix you will find it in 18", 24" and 48" widths. I found the 24" very easy to work with.


Note on the window one of those windshield sun guards. that helps a lot too. I circled some cable straps through the upper corners of the sun guard and use those loops to hang it on the curtain rod holders.


At the Algonac outing in September one couple put a strip of Reflectix along the three walls surrounding their bed, about 24" tall and said it helped.

Nelmes 11-18-2014 11:13 PM

I used contact cement, then carpet. It is well insulated and hasn't pulled off.

Raz 11-19-2014 08:12 AM

Quote:

Originally Posted by floyd (Post 492675)
........I have slept in fiberglass trailers with no insulation and it is not much more than a windbreak in the cold and it is an OVEN in the heat.
There is apparently a LOT more than a 1.1 overall R-value with reflextix/ratfur system installed. .......

Heretofore I have seen reflextix touted as anywhere from 11 to 15 overall R-value when installed with the rafur in a Scamp. Simple observation seems to confirm this.
One last observation, when sleeping in a modern Scamp in cold weather, feel the cold Cascading from the windows while the walls are warm and comfortable to the touch.
Science can be persuasive even with an incomplete understanding...
but stll, Bumble bees can actually fly.

A 3 1/2 inch layer of fiberglass installed in a wall cavity is rated at R-11. A layer of reflectix covered in rat fur also R-11? to R-15? Floyd, I realize you love all things Scamp, but that's just silly. Raz

floyd 11-19-2014 10:47 AM

Quote:

Originally Posted by P. Raz (Post 492811)
A 3 1/2 inch layer of fiberglass installed in a wall cavity is rated at R-11. A layer of reflectix covered in rat fur also R-11? to R-15? Floyd, I realize you love all things Scamp, but that's just silly.
Raz

So you say...
Are you then willing to accept 1.1 as the R factor?:loltu
Do you know of a more effective wall covering for a molded fiberglass trailer?
Without more info, maybe we should leave the "R" factor to cold hearted pirates.:PirateSmile:
"Shiver me timbers!":okra:floor:okra

Raz 11-20-2014 05:34 AM

1 Attachment(s)
Floyd, I pulled your chain just to get your response. You didn't disappoint :)

Considering that our 13' trailers are about the size of a small bathroom and for that space both the air conditioners and the furnaces provided are quite large, I don't think any of our trailers are well insulated.
.
Next time you are using your furnace you can get a good idea how effective the insulation is by measuring the outside hull temperature with an inexpensive IR thermometer. If you don't have one, you should. They are very handy. Raz

floyd 11-20-2014 09:46 AM

Quote:

Originally Posted by P. Raz (Post 492966)
Floyd, I pulled your chain just to get your response. You didn't disappoint :)

Considering that our 13' trailers are about the size of a small bathroom and for that space both the air conditioners and the furnaces provided are quite large, I don't think any of our trailers are well insulated.
.
Next time you are using your furnace you can get a good idea how effective the insulation is by measuring the outside hull temperature with an inexpensive IR thermometer. If you don't have one, you should. They are very handy. Raz


Our Scamp has about half of a conventional rooftop A/C plus a heat strip. It is also old enough to have the smaller output 12000BTU furnace. They are both overkill.(thanks to reflextix).
Neither is still available, having been replaced with larger units with even more overkill.
Last time I used the furnace or the A/C, I got a good idea of how effective the insulation is by experiencing unsurpassed comfort.

I used to use an IR thermometer to read tread temps on our racecar. It was a nice toy and nobody wanted to put it down!^_^
Like us, they were a bit silly and predictable!:thumb


All times are GMT -6. The time now is 09:19 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.