Literally everything melts here.

[Chotu]

You would think putting a little bit of foam insulation in the window could slow down the heat coming into the boat. Seems like a reasonable temporary solution right? Not in Florida!

This is the result after a few hours in the window.

The foam MELTED!!!

[GordMay]

New study shows bodies found from the Bermuda Triangle all died from heat exhaustion...

... Everyone knows its 180 degrees inside a triangle, so why would people even bother to travel through it?

[rslifkin]

Might need to use foil faced insulation so it reflects more of the sun and absorbs less heat. Or it might be time to get that boat ready for a trip north!

[ThereAndBack]

Put a tarp over the deck and windows. It makes a huge difference.

[Knotical]

Originally Posted by GordMay

... Everyone knows its 180 degrees inside a triangle, so why would people even bother to travel through it?

Gord, that is one of the funniest things I have ever heard

[LargeMarge]

Originally Posted by GordMay

New study shows bodies found from the Bermuda Triangle all died from heat exhaustion...

... Everyone knows its 180 degrees inside a triangle, so why would people even bother to travel through it?

.
.
Winner!

[zeehag]

i second the tarp idea--even screen tarps are a goood temperature diminisher. try it.
ps itis hotter here than in fla... we all use tarps, even the ocd sailors use tarps to cool interiors and decks.

[StuM]

Originally Posted by Chotu

You would think putting a little bit of foam insulation in the window could slow down the heat coming into the boat. Seems like a reasonable temporary solution right? Not in Florida!

This is the result after a few hours in the window.

The foam MELTED!!!

So where did you expect the solar radiation absorbed by that foam to go?

[Narfi]

A co-worker has been playing around with diy solar water heaters.

He had a new setup he tested this last Saturday, just a simple wooden box lined with foam (and I assume some sort of reflectors, I didn't see it) with plastic pex looped in it with a glass face. His glycol ratio wasn't strong enough and he boiled the water and burst the pipes and cracked the glass before he could figure out the air lock issues with his circulating pump.

So the sun was enough to boil glycol mixed water and burst plastic pex which is pretty flexible.

The punchline? It was -2 to -9 degrees F all day.

[BlueH2Obound]

Originally Posted by rslifkin

Might need to use foil faced insulation so it reflects more of the sun and absorbs less heat. Or it might be time to get that boat ready for a trip north!

On our RV, we use the shiny bubble wrap. Going on 6 years now, and looks just it was when we first installed it! It make A MARKED difference in how hard the AC units had to work. And just as long as we kept the two front bottom corners of the insulation folded up in the front windshield, no issues with the cats . . .

[Spot]

Polystyrene foam starts to give up at about 160F /70 C.
Here is a chart from CPS (Endurance/MAS) that compares body color to heat rise per ambient temp. Wondering if some white latex paint would help?

[coopec43]

Originally Posted by GordMay

New study shows bodies found from the Bermuda Triangle all died from heat exhaustion...

... Everyone knows its 180 degrees inside a triangle, so why would people even bother to travel through it?

I wasn't aware of that. (Is that Fahrenheit or Centigrade?)

[Simi 60]

Reflective foil tint
Bounces a lot of heat out

[Chotu]

Originally Posted by Spot

Polystyrene foam starts to give up at about 160F /70 C.
Here is a chart from CPS (Endurance/MAS) that compares body color to heat rise per ambient temp. Wondering if some white latex paint would help?

And that’s that I find so incredibly mind boggling.

No wonder I had so much trouble with the dow 795 and 3m VHb approach.

I’m dealing with a 100 degree temperature differential over the course of a few hours.

Until I got the tracks on to let the polycarbonate move all around as it pleases, I can see why the windows were all popping off.


I’ve been using this insulation all my life and my mind is absolutely blown it can melt.

Is reflective silver foil or white better by the way?

[Chotu]

Originally Posted by zeehag

i second the tarp idea--even screen tarps are a goood temperature diminisher. try it.
ps itis hotter here than in fla... we all use tarps, even the ocd sailors use tarps to cool interiors and decks.

I would, but there is a limitation.

My brand new windows are polycarbonate and a rubbing tarp will scratch them. That’s why I’m doing the protection from the inside.