How to attach Panda Film to Foam Board Insulation?

[Aeroknow]

Otherwise, I am thinking about building out a frame using furring strips to staple the panda to.
The only thing is that the panda would be away from the wall based on however thick the furring strips are.

Yeah dude, that’s what I recommended earlier as that whats I’d do if you cant/won’t rock over the foam.
Use 1X material for furring strips. You’ll only be 3/4” off the face of the foam board eazy peazy

 

[1212ham]

Interesting thought... do you think it would stick to this and be effective? The panda film is mainly for reflection yes but also to protect the foam board from moisture and the other vapor barrier was to protect the fiberglass as fiberglass has issues with mold. A little overboard? Probably. Effective? Definitely

You're really overthinking this. Why won't paint stick? Why does foam board need protection from moisture?
Will it be effective? Yes. Flat white is around 75-85% reflective and Titanium white is 90-97%.

There is nothing new about titanium white paint, I used it 40 years ago.

The NEW WHITE PAINT - Titanium White (titanium dioxide)

1st regular Flat white paint has the ability to reflect between 75-85% of the light, and does not create hotspots, but now there is a new white. Its...

forum.grasscity.com

What is more reflective white paint or Mylar?

Wow, I am surprised to hear people saying white paint is just as good. Mylar is much more reflective than paint. Something like 10% more reflective. This doesn't seem like a lot, but depending on how many watts you are using, it will make a big difference.

findanyanswer.com

 

[Aeroknow]

@xlPhobialx
Not sure how you’re planning on running any outlets or wall fans etc, but if you do the furring strips, it will give you something to attach those to also.

 

[myke]

@xlPhobialx
Not sure how you’re planning on running any outlets or wall fans etc, but if you do the furring strips, it will give you something to attach those to also.

This is why I like plywood walls,put a screw anywhere you want.

 

[Aeroknow]

This is why I like plywood walls,put a screw anywhere you want.

Shit. Do you know how much plywood costs right now? Lol. It’s fucking insane.
Shitrock is $10 for 8’s. I can put a screw pretty much anywhere for most things on the walls in drywall too. We use Gyp screws(laminating screws) naturally nothing thats heavy though.

 

[xIPhobiaIx]

@xlPhobialx
Not sure how you’re planning on running any outlets or wall fans etc, but if you do the furring strips, it will give you something to attach those to also.

The 18in Hurrican fans I have (8 of em) need to be drilled into rafters and yeah I can do that from the strip into the rafter.... just the furring strip will need to be wide enough.

 

[ҖҗlegilizeitҗҖ]

I think you miss read my post,air is the best insulation to stop heat transfer.

Right, and I said thats incorrect. Heat transfer (or lack thereof) is expressed in R value.
Air by itself, is only rated at R-1 for every 3.5" deep it is. A single piece of foam board, is rated 17.5x high R value than air. So 3.5" of foam board is R-17.5
1" of foam is R-5

 

[Alright alright alright]

What problem are you referring to? Your setup sounds almost exactly like mine. What do you recommend I do before I ran into "your problem" whatever that might be. Let me know I am curious. Are saying have an air gap between the panda and foam board? I also think that due to the radiant barrier built into the foam board that also might work well in that regards as well. Also, to note though my walls do not get cold and stay at a good temp.

I’m referring to my condensation problem. I’m just saying I thought I covered all my bases and right now temps are down to -4. With high humidity in the room it’s hard to fight it. I soon hope to drop the rh down to 50. Hopefully that helps.

 

[Alright alright alright]

Better air movement will stop that condensation in the corners, I stay below freezing for weeks at a time here.

I have two 16” fans pushing air. When temps hit 10F and lower its tuff when the rh is above 60%

 

[xIPhobiaIx]

Right, and I said thats incorrect. Heat transfer (or lack thereof) is expressed in R value.
Air by itself, is only rated at R-1 for every 3.5" deep it is. A single piece of foam board, is rated 17.5x high R value than air. So 3.5" of foam board is R-17.5
1" of foam is R-5

Are you just saying to add a second foam board instead of air? As far as R value goes that would be better but the air itself might help reduce condensation not that I will have trouble with that to begin with.

 

[Apalchen]

I think I’m gonna go over my foam board with frp panels. Just a thought if you haven’t already gotten the panda film

 

[xIPhobiaIx]

I think I’m gonna go over my foam board with frp panels. Just a thought if you haven’t already gotten the panda film

Yeah I was looking at FRP and PVC panels but due to cost compared to panda might just do that later on.

 

[1212ham]

I think you miss read my post,air is the best insulation to stop heat transfer.

Nonsense. Why do you think houses have insulation in the walls?
BTW, a vacuum is the best insulation to stop heat transfer, it's literally perfect. Aerogel is close.

 

[ҖҗlegilizeitҗҖ]

Are you just saying to add a second foam board instead of air? As far as R value goes that would be better but the air itself might help reduce condensation not that I will have trouble with that to begin with.

Yes.
Condensation has to do with temperature difference between a surface and the ambient air. Similar to a cold coke can on a summer day. The foam board would do a better job at reducing heat loss, thus increasing surface temperature, and decreasing condensation.
Plus a ridged sheet of foam would be easier to carry, move, set up, clean and use IMO than a sheet of panda film

 

[myke]

Nonsense. Why do you think houses have insulation in the walls?
BTW, a vacuum is the best insulation to stop heat transfer, it's literally perfect. Aerogel is close.

You also miss read it.

 

[ҖҗlegilizeitҗҖ]

You also miss read it.

What are you trying to say then?
It sounds like your idea is to hang the panda film so it has a air gap between it, and the outside wall.
You said this is because air is the best insulator, and it will keep the warm panda film from being directly on the cold walls.

But if you hang the panda film 3.5" away from the wall, the air insulation value is still 5x worse than just using 1" of foam board.

 

[myke]

What are you trying to say then?
It sounds like your idea is to hang the panda film so it has a air gap between it, and the outside wall.
You said this is because air is the best insulator, and it will keep the warm panda film from being directly on the cold walls.

But if you hang the panda film 3.5" away from the wall, the air insulation value is still 5x worse than just using 1" of foam board.

A Fella said his corners /walls were cold,nothing to do with insulation.The gap stops the warm panda from touching/condensation etc.Im high lol.Hope that makes sence.

 

[ҖҗlegilizeitҗҖ]

A Fella said his corners /walls were cold,nothing to do with insulation.The gap stops the warm panda from touching/condensation etc.Im high lol.Hope that makes sence.

You have the right train of thought... but it would be more prudent just to attach 1" foam board directly against the cold outside walls, then tape the seams.
Using just 1" board will do the same thing, expect keep the cold from causing condensation 5x better and save 5" of space overall.

 

[xIPhobiaIx]

You have the right train of thought... but it would be more prudent just to attach 1" foam board directly against the cold outside walls, then tape the seams.
Using just 1" board will do the same thing, expect keep the cold from causing condensation 5x better and save 5" of space overall.

But I already have 1in of foam board up and the wall temperature is good. Would it hurt if there was a 3/4inch gap between the wall and panda film?