I need to get my garage walls and roof spray insulated. Does anyone have any recommendations for someone that would do a job that's not an entire house?

be prepared to spend some $$$. This was for approx 300 sq ft of one wall, easily accessible.

Robert Barbee| PM Manager-Estimator
Hinkle Insulation & Drywall Co, Inc.
email=Robert.Barbee@installed.net
Robert.Barbee@installed.net
(512) 810-4782 (Mobile)
(512) 312-0826 (Office)

Was considering spray but was reading it has fallen out favor as any savings from energy are easily eaten up when any changes or renovations are needed. Also some concerns with moisture trapping. Apparently everyone hates dealing with it. Just curious on how you decided on spray as opposed to something like rock wool.

Primarily because I'm looking to insulate the open ceiling/roof in the garage that I can't really lay or place insulation. Plus I've heard from various people about how much better the r-value is. We've just completed a full renovation of the house, and now that I'm unpacking everything out of the garage I'd like to have it. There's not any plumbing and most wiring is exposed, so I'm not too worried about it being a pain later.

makes sense. Thanks for the reply. I am doing new home construction and I've been debating insulation options.

DrAg93 said:

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makes sense. Thanks for the reply. I am doing new home construction and I've been debating insulation options.

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i would batt and blow.

DrAg93 said:

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makes sense. Thanks for the reply. I am doing new home construction and I've been debating insulation options.

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It all depends.

1. The home is a system. A new construction home properly prepared with equivalent roofing, windows, fresh air systems, mechanical systems and so on and foam is great. A remodel is much more challenging to get right. Everything works together.

2. Open cell foam is open. Vapor and moisture travel through it. Again, it's about proper install and controlling other conditions. We've been foaming homes for decades and haven't had a single issue with moisture retention except for 1 remodel where an existing gutter was failing and letting water come into the sub floor. There was closed cell below and water wasn't able to exit so it just rotted out the subfloor. It was an old home and we advised against foam but the architect and client wanted it.

3. Iirc, open cell is like 4.5R/in and closed is like 6R/in. Somewhere in that range

4. Open cell foam is living in the 4-5 $/sqft range. For a small job, I'm sure there is a minimum.

5. Its a good idea to dehumidify or condition the attic space to help reduce the chance of condensation on duct work.

6. If you're retroing- the mechanical system has to work. The attic must be able to be properly sealed

7. No matter what you go with, proper install is the key.

8. If I were doing my own house from scratch, I'd insulate outside the walls and create a sealed envelope. If I couldn't do that, I'd go with rock wool.