Insulation Thoughts?

[d30gaijin]

I installed the blue 1" foam board insulation in the side walls and roof of my CT conversion, still I need to insulate the upper corners where the 12v DC electrical wiring runs to overhead lights and outside trailer lights (see pic below) and I am thinking that 2" woven type fiberglass insulation might be a better choice than the blue 1" foam board since those areas are closer to 2" in depth than the area between the roof and paneling and sidewalls and paneling are. That area will be finished off with Luan paneling at about a 45 degree angle so there should be plenty of room for the 2" fiberglass insulation.

Any thoughts?

Don

[starleen2]

Should work and be just fine

[GPW]

Just a consideration ... You might want to wrap that fglas insulation (like a plastic bag ) , so no particles get shaken out on the road ... Easy to just fill some plastic contractor bags with fiberglass, or even cellulose , fold and tape and stuff in the openings and screw a cover over that ...the plastic bag also keeps the fiberglass dry , very important to it's insulating qualities... that's the way we used to do custom vans , some time ago... we even used to wrap the trim cover with matching carpet so the screws wouldn't show.. a bit excessive , I must admit...

[pete42]

On one trailer the builder used crown molding on the side as well as the top to hold the fiberglass in place sorta like you are describing.

[d30gaijin]

Just a consideration ... You might want to wrap that fglas insulation (like a plastic bag ) , so no particles get shaken out on the road ... Easy to just fill some plastic contractor bags with fiberglass, or even cellulose , fold and tape and stuff in the openings and screw a cover over that ...the plastic bag also keeps the fiberglass dry , very important to it's insulating qualities... that's the way we used to do custom vans , some time ago... we even used to wrap the trim cover with matching carpet so the screws wouldn't show.. a bit excessive , I must admit...

GPW,

Again, more excellent advice from you. Thank you for that! I was concerned with reports of fiberglass insulation and vibration, which was the reason for my question/this thread. Great idea to encapsulate it in plastic!

Don

[vreihen]

Great idea to encapsulate it in plastic!

May I throw out a suggestion and suggest that you look at a roll of Seal-a-Meal "bags" in lieu of contractor bags and tape? The one that I have in my hand right now is essentially a plastic bag material tube that's 11" wide (flattened) and 18' long. All you need to do is seal the ends with double-faced tape or caulk after you stuff it with the itchy stuff, and all should be good (assuming that it fits in the space you're trying to fill).....

[GPW]

Seal a meal ... that's a cool idea if you have one .... like little insulation pillows to stuff wherever you want ... Great idea V !!!

[d30gaijin]

May I throw out a suggestion and suggest that you look at a roll of Seal-a-Meal "bags" in lieu of contractor bags and tape? The one that I have in my hand right now is essentially a plastic bag material tube that's 11" wide (flattened) and 18' long. All you need to do is seal the ends with double-faced tape or caulk after you stuff it with the itchy stuff, and all should be good (assuming that it fits in the space you're trying to fill).....

Vreihen,

Another excellent idea, thank you for that! And I actually have a Seal-a-Meal sealer.

Don

[Arne]

have a look here.. it is what I used in my ceiling... 4 layers = 1.5 inches.

http://www.discconnect.com/FoamFly/what.htm

[GPW]

Arne , I always reserve that stuff for my model airplanes ... http://www.foamfly.com/gallery2/v/Photos/Glen/
Too valuable for common insulation ...

[Arne]

I worked out the sq. ft. price.. it is about the same as 1.5" thick rigid foam...

but, it probably does make great airplanes.... most small electrics are foam... I still fly the old fashioned way... with fuel and oil covered planes.

[vreihen]

but, it probably does make great airplanes.... most small electrics are foam... I still fly the old fashioned way... with fuel and oil covered planes.

To bring this drifting thread full-circle, I bought my rolls of Seal-A-Meal bags specifically to vacuum bag 6' foam wing cores when wrapping them in carbon fiber. Of course, they are going on my race car and not a plane, but I had the cores cut by a model airplane CNC place and followed the directions from an R/C web site to wrap them.

Amazing how stuff from one hobby transfers to another one.....