Polystyrene or injected foam insulation: which one is better?



I’m replacing my wood garage door (which is attached to my home) with a steel door (because it’s cheaper), but I don’t know which insulation to use. Home Depot offers the board insulation and another company is offering the injected foam insulation. Which one should I use.

Has anyone had problems with spray in foam insulation?



I am thinking about starting a business with the foam insulation and am looking to find out the weakness'.

is it nessesary to use foam/insulation when building a subwoofer box?



i am building a bandpass subwoofer box for my car and i am wondering if it is nessesary to use foam/insulation to deaden the sound. i usually use it when i build speaker boxes but i dont know if subwoofer frequencies will resonate like mid and high ones do. in case your wondering [...]

Can I spray a small amount of foam insulation around a pipe?



The copper pipe that carries the hot water for baseboard heating travels through walls from rooms to room. Can I fill around the small hole in the wall that it goes through with foam insulation? It would be one more space bugs could be stopped from crawling through. I think they come from the garage [...]

How do I remove the backing from foam board insulation?



Hi Everyone,
I have some 4 X 8 sheets of 1" foam insulation that I'd like to use as a roadbed for a model train layout. The problem is that this is the type of foam board that has a metallic backing sheet glued to it. I'd like to remove this backing so I [...]

What is the difference between foam insulation and a radiant barrier, and which is more effective?



I just bought a house with NO attic ventilation at all, and was wondering which direction to go: installing turbine vents, having a radiant barrier installed, or having foam insulation put in. Which would keep the attic the coolest and keep my electric bill the lowest? I have absolutely no shade on [...]

How do I remove foam insulation from my wall?



I just bought an AC to install into my wall but their is foam insulation there. What do I use to cut it out?

How to install aluminum foam insulation to keep the heat out?



I want to install a 1 sided aluminum foam insulation to keep the heat out. do i install it aluminum side facing the sun or foam side facing the sun?