Can I Use a Spray Foam Heater Without Burning My SPF?

Spray Foam HeaterSpray foam applicators spend a lot of money on their equipment and materials and they need to be treated properly to work well. If Spray Polyurethane Foam is not stored and kept within the manufacturer’s suggested temperature ranges the foam chemicals can change viscosity and degrade, thus not allowing them to apply properly.

During the winter months drums of material need to be kept warm to avoid both Freezing and Viscosity Drift. Depending on the formulation, freezing can occur anywhere between 20°F and 47°F. Viscosity Drift is also a result of temperature drop. Every 10°C (18°F) drop in temperature will double viscosity. This change in temperature will thicken systems making it difficult to spray and will also stall pumps. Most spray polyurethane foam is recommended to be maintained around room temperature (70° to 80°F). A blanket style drum heater with heat spreading technology is the recommended spray foam heating solution.

According to the SPFA (Spray Polyurethane Foam Alliance), heat blanket style heaters are the recommended solution to cold weather issues, “Low heat flux blanket-type heaters work well to maintain drum temperatures. Avoid the use of band heaters or other high heat flux heaters.” Band heaters are high heat flux style heaters which localize heat, causing damaged product and bulging drums. Additionally, band heaters have unreliable thermostats which can over-heat, also resulting in off-ratio foam, increased density and loss in coverage for the applicator. This all translates into loss profitability.

Our barrel heaters maintain optimal temperatures for cold weather spray foam jobs. Powerblanketdrum heaters completely wrap the drum, top to bottom, offering total protection. Additionally, our patented GreenHeat Technology provides uniform heat throughout the entire blanket surface, thus avoiding hot or cold spots. This innovative technology delivers optimal operating temperature for spray foam applicators in all cold weather conditions. The Pro-style barrel heaters also include a digital thermostatic controller allowing you to select an optimal set point, +/- 2°F.  Also, this innovative barrel heater offers three independent, self-limiting heat zones for ultimate temperature control. Whether conditions are extremely cold or slightly cool, our Barrel Heaters can keep you on the job.

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