PML 2 part expanding foam - cure time?

[jnmiller]

Hi, does anyone know the how long PML 2 part expanding foam takes to cure? Website description
only says 'fast set'. Instruction sheet doesn't specify a time range either.

 

[schneijt]

It will start expanding after about 30sec from the time you begin mixing, and it will be done expanding in about 10min in my experience. It acts the same as the large bottles of 2-part foam from Amazon etc, since all of them that I've used have seemed like the exact same product. Just be sure that if you're filling a larger area, to do multiple small pours instead of one big one--there is a decent amount of heat released that you want to let dissipate.

 

[Brian Ditmer]

I gave it an hour between pours, but probably could have done one every 30 minutes

 

[djs]

It feels solid after about 30 min, although usually give it 2 hours or so, just because I don't know if it's internally curing or not.