Temperature is important in producing good quality foam. This time of year it's critical to monitor chemical and surface temperatures before spraying foam. Too many times we learn spray foam kits have been left in hot cars or left in hot storage units on job-sites. If your chemicals are too hot you will not produce good foam and in extreme cases you will have adhesion problems.
For best performance, your chemical and surface temperatures must be between 65-90 degrees Fahrenheit. To help gauge the temperatures you will find a temperature strip on the B-Component (white) tank. When the green section is indicated the chemicals are at the proper temperature for use. If the red section or the strip is just about in the red section, the chemicals are too warm.
Chemical temperatures that are too warm will create additional pressure on the "B" side, causing it to dispense with more pressure than it should. The foam dispensed will be lighter in color and spongy to the touch. In extreme cases where the foam is liquefied, melted, or foamed up, the kit is probably only dispensing the "B" chemical due to a blockage in the "A" side.
When the chemicals are too warm, place the tanks in a cooler area until the temperature strip indicates the green section. Always monitor the temperature strip throughout application to make sure they stay in the proper temperature range.