Here is a shot of an spray foam insulated roof line on one of my client's houses. Now it is semi conditioned storage space that is not subject to extreme temperatures.
The Answer- Spray Foam Insulation.
We choose several years ago to abandon all other types on insulation in most cases and just use spray foam insulation for very reasons stated in the question. Most insulation just insulates, however if it does not have an effective air seal it is useless. Spray foam insulation (We use Icynene) insulates, air seals and it maintains it’s composition over time which is what you need to keep a consistent R-Value.
We are the only EarthCraft Builder, Renovator and Home Performance contractor that uses Icynene as the standard insulation on all of our projects in the Atlanta area. PS- Our clients do not mind since the extra cost is far outweighed by the additional comfort and energy savings. Oh- I forgot to mention that most of our clients are eligible for up to 1900 in rebates from GA Power and tax credit of up to 1500 from the Feds on their tax returns. So the cost is not even noticed then.
Here is a great video that show how spray foam insulation is superior to other types. Spray foam demonstration video
Matt Hoots is president of SawHorse- Atlanta’s leading design/ build firm since 1978. He also is co chair of the GAHBA Green Building Council, frequently blogs and writes a monthly green Q&A for Atlanta Home Improvement Magazine.
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