Edwin Pawlowski wrote:

Hmmm, I've never seen Norm in a hazmat suit when doing a glue up. Now, I
don't doubt the chemicals are hazardous in raw form and full concentration,
but what happens when they are cured?

A valid question.

MDI/TDI based products are perfectly safe when applied properly and
allowed to cure.

When these cured products are burned; however, new ball game.

If you doubt this, talk to a local firefighter about what happens when
furniture foam starts burning.

At a minimum, you will get SOX, NOX, CO and a whole bunch of other nasty
organic products of combustion, be it complete or incomplete.

Urethanes are nothing to screw around with, they can be very nasty.

Lew