I need to insulate between the floor joists over my crawl space. The area
involved is 24' x 40' (or about 960 square feet).

I had a guy come by from an outfit called ThermRseal. They use expanding
foam, a product called Sealection500.

He looked in my crawl space. The floor is dirt and is inclined. At the
deepest point it is about five feet. The dirt floor rises over a distance of
24' (the width of the house) so that at the shallowest point it is only
about one foot deep (dirt floor to bottom of joists).

This expanded foam product appears to be a good form of insulation and
better that traditional fiberglass. Many reports attest to its safety and
efficacy in insulating properties.

The guy gave me an estimate of $2,975. Said the job would take about a day.
Said my crawl space is a difficult job because of how it narrows down to
about a foot deep and will be hard, but not impossible to work in.

I understand that this type of insulation is more costlier than traditional
fiberglass, as much as 2.5 times the cost of a fiberglass installation.

My question is, does this estimate seem reasonable? I'd like to negotiate
downward a bit and am wondering how low I should be able to get the price
down to within reason.

Also interested in anyones thoughts on this type of insulation.

Thanks so much.

Jack