Case Studies

Blanket Insulation Services Case Studies: Nasty Crawlspace

Friday, May 22nd, 2015 by Gregory Mellas


The customer has had issues with the guest bedroom being very cold in the winter ever since it was built. Back in the 1980's, blown cellulose was installed in the crawlspace in an attempt to make the space livable during the winter month. This just made things worse. Not only was the room still freezing, but now there is a large amount of cellulose in direct contact with the wet ground soaking up moisture 24 hours a day, 7 days a week. This has been going on for over 30 years and finally she reached out to Blanket Insulation to get the job done right!


All of the cellulose needed to be removed before we could do anything else, and with a 2 foot clearance from ground to floor joists and a 16 inch x 16 inch opening, this presented an interesting challenge. First, we enlarged the opening of the crawlspace so we had easy access to remove the cellulose. After pulling 20 contractor bags of cellulose from the opening, we were able to get into the space and start cleaning out the rest. We removed a total of 56 bags of wet, nasty cellulose from the crawlspace. That's a lot of insulation! We then installed our CleanSpace liner across the ground and up the walls to stop any moisture from entering through the ground. Then we installed 3 inches of closed cell spray foam to the rim joist and perimeter walls so the crawlspace would be effectively air sealed and insulated. The customer had electric radiant floor heat installed some years back to help mask the cold floors, so we also installed a radiant barrier on the underside of the floor joists to help improve the effectiveness of this system. Upon completion we framed in a new access door for the crawlspace for easy access in the future. Now the room will be much warmer in the winter and the home will be a healthier, safer, and more efficient place to enjoy for years to come.

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Blanket Insulation Services
21421 Hilltop St #1
Southfield, MI 48033