Yes....I agree with John and afoaf...Let's go a little deeper....
For me the proper shop temp for RR is somewhere between 70-80 degrees Fahrenheit. I've done it hotter and I've done it colder. I've done lots of backyard / low tech tests.
When your glassing room is at a good temp your Add F will be clear like water.
Cold room = chuncky Add F.....Do what you can to heat up the room and the chemicals....Flammable Chemicals.....
Be smart.......Don't burn down the house.
I strain my Add F because 90% of the surfboards I glass have art work on the foam. The Add F will make darker colors milky. It's a balancing act...I believe in Add F...I could be totally wrong.....I'm ok with that...
Building surfboards is an Art....That's why I'm here.....
Stingray