When winterizing and storing hoses over an extended amount of time, be sure to clean the system thoroughly. Often, the flush and remaining isocyanate will separate over time. With the isocyanate clinging to the hose walls, fittings and various locations throughout the equipment doesn’t come out 100% with an initial flush. As a result, when the hose is put back in service, the heating required will cause expansion – dis-bonding the settled isocyanate. To help prevent this, be sure to thoroughly flush the system and follow up with a second flush within 3-4 days. This action will allow time for the remaining isocyanate to settle and be cleared with clean flush.
John DavidsonView posts by John Davidson
John Davidson is the VP of Operations at SprayWorks Equipment Group and is an SPFA PCP Certified Roofing and Insulation Installer, Roofing and Insulation Project Manager, and Supplier Rep. With over 30 years of experience in the spray foam and polyurea industry, John brings a wealth of knowledge and hands-on experience. He has worked on commercial and residential buildings, bridges and infrastructure.