dhutton01
Backyard Hack
I am far from an expert but I worry about condensation forming with open cell on a steel building. I have seen closed cell followed by open cell to prevent condensation.
Don
76 K5 Blazer
- Thread starter dhutton01
- Start date
Don
RosharonRooster
Promoted Users
Yeah me too. I've tried researching but end up more lost than before
RosharonRooster
Promoted Users
This company has big contracts with the chemical plants over here and doesn't advertise residential stuff. He gave me the "I can do whatever you want but I'm telling you what works and what I have in my own shop" speech.
dhutton01
Backyard Hack
As I said I’m not an expert. My neighbor had open cell sprayed on his shop roof. It separated in large sections. What a mess, contractor repaired the separated sections with closed cell. Looks awful.
Don
123pugsy
Member
Trust no one. Open cell is trash. Don't put that on your roof.
RosharonRooster
Promoted Users
Outside of potentially trapping moisture. What are the down sides?...3x as thick...and less cost..?
crashtech
Combo Man & Mod
Isn't moisture trapping enough? That makes your roof rust and the insulation fall off.
RosharonRooster
Promoted Users
I agree. I'm just looking for options. Just wonder if open cell is bad, then why is it even a thing. Like what are the pro and con
RosharonRooster
Promoted Users
I have closed cell in my paint room and a window leaks pretty good. Lol. I hate to jack the thread Don. I'm sorry
dhutton01
Backyard Hack
I have seen closed cell with open cell over it. So maybe best of both worlds.
123pugsy
Member
"Pros" in contracting, always like to give the most profitable opinion. A second from a "pro" may be the same.
Closed cell is denser foam, thus the weight difference. When you're dealing with hot sun, that's where you need the good stuff.
Open cell is 2 pound, closed cell is 5 pound. I would imagine per cubic foot or yard, not sure. That means open cell is exactly that, Open air bubbles and less material.
Closed cell is denser foam, thus the weight difference. When you're dealing with hot sun, that's where you need the good stuff.
123pugsy
Member
I had them spray open cell between my floors and ceilings between floors to muffle the noise. My basement walls and rim boards are closed cell. Basement is dry and toasty. Closed cell acts as a vapor barrier as well.
dhutton01
Backyard Hack
TMI dash pad and VHX gauges installed. Took some time to install the vents since the holes were undersized. Working on carpet installation. Dash had been butchered to install a single DIN radio. Had to do some reverse butchery to install a stock style radio. Learned that the ashtray assembly can’t be installed from behind when vintage air evaporator is installed.
New steering wheel and shifter knob coming.
Don
New steering wheel and shifter knob coming.
Don
Last edited:
dhutton01
Backyard Hack
It is made by TMI. I am also using their door panels, console and seats. Bought them from Brothers because they had them in stock.
Don
Chris_Hamilton
Trying to be the best me, I can be
Whole lot of work you've done there Don. Looking good
dhutton01
Backyard Hack
Waiting on a hood latch pin. Owner drove over the original hood and tossed it in the trash. 
. Had an entertaining oscillation in the fuel pump controller that required the addition of a fuel pressure damper. Holley EFI runs great now. 800 hours total in the build.
Don
. Had an entertaining oscillation in the fuel pump controller that required the addition of a fuel pressure damper. Holley EFI runs great now. 800 hours total in the build. Don
Last edited: