Contractor referral
![](https://secure.gravatar.com/avatar/1870065c44a65b22ed717a797f84b027?s=52&d=https%3A%2F%2Fimages.greenbuildingadvisor.com%2Fapp%2Favatars%2F200x200%2Fd.png&r=g)
Constructing a double wall assembly in southern Maine. Any advice on a competent dense packed cellulose installer? Any opinions on open cell vs cellulose in this southern tier of zone6? Thanks for any input!
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
![](https://www.greenbuildingadvisor.com/app/themes/greenbuildingadvisor/dist/img/modules/detail-library/thumb1.png)
![](https://www.greenbuildingadvisor.com/app/themes/greenbuildingadvisor/dist/img/modules/detail-library/thumb2.png)
Replies
I highly recommend these Portland-based insulators:
http://www.cascobayinsulation.com/
http://ne-spray.com/
In my opinion, there aren't many situations where open cell foam can out-perform cellulose.