The Iconene Contract

Yesterday during the Sunset Publishing Celebration in Menlo Park, we got to visit directly w/ vendors that we hope to be using on our project. Calpak, a company that has a bid in for Iconene insulation and the roof, was helpful in educating us re: benefits of iconene. Still unclear for me is the real R value...mostly b/c in all the marketing blurbs they gloss over this trying to move the reader from the R value to how it's measured and why the actual R value isn't so critical as the factoring components...which, for me, just gets me wondering MORE why they don't just come out and state that the R value is less than other, cheaper, materials. We need to insure that contracturally, the following are reflected in any contract we sign with them, namely:
that there will not be any $ provided at the time of contract signing and if this cannot be possible, that the $ deposit be instead funded to some account to which access is not granted until close to the time of work commencement.

1. that all parties are aware that the iconene application will be phased into 2 parts, the subfloor and "mini"-subfloor as phase 1 and the walls and roof as phase 2.
2. Regarding phase 1, the access to the subfloor is limited in some areas. It may be beneficial to all involved to have the existing holes to different portions of the crawl space still open for access during the spray. Templates of these areas could be built before hand or immediately after access to that particular section is no longer needed.
3. After finishing the section, these "pre-fabbed" mini-sections of new mini-subfloor can then be laid into place right after the applicator comes up from the hole. Then w/ all the holes closed, the "mini"-subfloor that is going to be built on top of the existing subfloor can then be filled w/ iconene in the same visit.
4. b/c, per code, we have to maintain a minimum distance of 18" above grade to the bottom of the floor joists in the crawl space [a distance that currently looks to be borderline less than that in some places], it is imperative that the contract state that care be taken such that the amount of iconene sprayed in the crawl space will be limited such that the subsequent expansion will not extend to below the level of the floor joists and wherever it does, it will be removed from the floor joists AND the crawl space cavity.

It is also important that the contract state that since we are not yet settled on the exact type of composite shingle that we will be choosing that this can be decided at a later date.