Originally Posted by Comodave
Honestly I didnít even look for other sources since we had insulated 4 previous boats with Soundown and had great success with it and was very satisfied with their customer support.
I was posting this reply while the one previous to this was being deleted so this one may not make a lot of sense.
That was my post Dave which I deleted. I posted from soundproofcow.com where I bought it before but realized it wasn't flame retardant foam so although cheaper probably not recommended, at least for engine rooms.