Outdoor Wood Furnace Info

All-Purpose OWF Discussions => General Outdoor Furnace Discussion => Topic started by: big cat on May 29, 2015, 07:58:42 PM

Title: What type of spray foam?
Post by: big cat on May 29, 2015, 07:58:42 PM

So I've decided to give my NC-175 one last shot before replacing it, albeit with one change. I plan on replacing the batt insulation with spray foam insulation. Any suggestions on what type of foam I should use?
Thanks.

Title: Re: What type of spray foam?
Post by: juddspaintballs on May 29, 2015, 09:03:52 PM

Closed cell

Title: Re: What type of spray foam?
Post by: coolidge on May 30, 2015, 10:39:46 AM

Closed cell for shure, MINIMUM 3"

Title: Re: What type of spray foam?
Post by: atvalaska on May 30, 2015, 10:42:24 PM

why is 3" the number   ?  ... 3" of foam has a higher  r valve ...then any batt/foil ins like we/i l have  I plan to do the same tho....

Title: Re: What type of spray foam?
Post by: coolidge on May 31, 2015, 06:28:15 AM

3" will give you greater compression strength. It will take the place of the outer "black sleeve" others use.
Higher R value too of course.

Title: Re: What type of spray foam?
Post by: nstueve on June 10, 2015, 08:34:06 AM

I've been looking at the same thing. Closed cell is def the way to go however can you get closed cell to install yourself somewhere? Seem like the DOW Froth Pak's are 200sqft of 1" thick and are $300! Are they even closed cell? Seems like 3" of spray foam could cost you $600+ to insulate...????

Title: Re: What type of spray foam?
Post by: juddspaintballs on June 10, 2015, 12:19:45 PM

Yup, it's not cheap.