I would like more info regarding the percentage cost diferential (labor inclusive) in the article with respect to the open/closed varietites and with respect to comparable r values for fiberglass as opposed to open cell.
Here’s a few thoughts:
- There is also soy-based closed cell with an R Value of R6/inch
- Most spray foams are listed with initial R Values, and aged R Values. Ex: R6.8 initial, R6 aged, which is the long term R Value. Maybe this should be explained a bit to clarify for homeowner as some contractors promote initial R Values because they are higher.
- Rodents will not eat it: You should check with a few manufacturers of soy based foam.You will find it can be a marketing ploy by contractors and is not true in most cases.
- Most consumers are focused on the R Value of spray foams, however the airsealing capabilities of closed cell spray foam is mostly why it can be so much more effective that traditional insulation methods.
- Spray foam is not a new product, it has been around for 20+ years.
This needs to be compared to other similar foam-based insulations, not fiberglass batt insulation.