This product is used quite extensively on US/Canadian home improvements/DIY shows but rarely here from what I can see.
That along with other insulators can bring it up to an R35 rating which leaves our R5 somewhat behind.
We are all on about reducing energy usage for both heat and cooling but insulation to me still seems to be inadequately used, including Double Glazing so why isnt Spray Foam used?.
I remember seeing it advertised over 30 years ago but then a story went around that it under certain heat conditions (House Fire) it gave off Cyanotic fumes which were deadly and after that the idea of using this product just sort of faded away. Truth be known by the time the foam 'Gassed' off, you were dead anyway from smoke inhalation.
On one show I saw them using a 2 part mix with the chemicals in what looked like 2 X 4.5kg LPG bottles into a 'Mixer' and sprayed into the wall cavity.
So whats the story, who uses it, is it hard to use and why isnt it?