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October 10, 2009
Blown In Insulation
Does anyone know, ballpark, how much it costs to have insulation blown in to a 20' wide brownstone's roof space?
Comments
Presuming your question relates to blown in cellulose, which is what we just had blown into our ceiling recently during renovations, we have a 22' wide brownstone, and the cost was around ~$2500.
I say around because I am not sure exactly, we have a contract which has cellulose being blown in on all our floors, and from what I read in our contract, I think that probably represents the right number.
We are using Brooklyn Insulation & Soundproofing. Very nice folks. 718-388-4814 is their number I believe (kind of faint on my contract but that's what I think it reads).
Posted by: sunspot19 at October 11, 2009 7:11 AM
I looked into this about a year ago and the cost was approx 2.00 per square foot for upto 6 inches of cellulose.
Posted by: isaacly at October 11, 2009 7:31 AM
2.00 psf is correct and note that the insulation is blown in through the skylight on the inside of the house - so no holes in the ceiling!!
I used Brooklyn Insulation & Soundproofing as well - very good job - and well worth it!!
Posted by: SenatorStreet at October 11, 2009 9:21 AM
Thanks to all - very helpful :)
Posted by: parkslopemom at October 11, 2009 11:32 AM
Do you want cellulose or icynene....the foam injected in as a liquid and which expands to 60 times its volume??? There is an authorized installer in Park Slope!!
Posted by: outerboro at October 11, 2009 12:16 PM
Here's yet another strong rec for Brooklyn Insulation & Soundproofing who did a wonderful job of insulating the externals walls and roof of the rear extension on our house with cellulose last year. The gain in heat retention in the ell been amazing and the cost, approximately $1k, was very reasonable.
Posted by: Brooklynista at October 11, 2009 4:50 PM
You need to add at least one roof vent when you do this. Federal Conservation did mine, $2psf plus $200 for the vent
Posted by: daveinbedstuy at October 12, 2009 7:12 AM
And another recommendation for Brooklyn Insulation. Super fast, friendly, a good value.
There is simply no consensus on the need for roof vents, Dave. That is especially true with cellulose, which can absorb and release moisture much better than the fiberglass that Federal Conservation uses. I found Brooklyn Insulation to be about less than 2/3 the cost of Federal, who would have insisted on cutting holes in the roof and vents.
Posted by: renomandru at October 12, 2009 8:49 AM
Just curious, you guys see a noticeable difference in heat bills as a result? Does it also slow heat absorption in summer or is that just wishful thinking on my part??
Posted by: Johnny at October 12, 2009 12:40 PM
we rented the machine from home depot, which came free with the purchase of 30 bales of cellulose, and did it ourselves in an afternoon for under $500. We did it last january or february, and could feel the difference in the house the second we finished the job. this summer was our first summer in the house though, so i don't know whether it had any noticeable effect on heat absorption.
Posted by: jellystew at October 13, 2009 9:51 AM
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