Los Angeles County Phos-Chek Home Wildfire Defense

What is Phos-Chek Fire Retardant?

PHOS-CHEK is a ground applied, long-term fire retardant that is used when season-long protection is needed. The fire retardant is used in high-risk areas, underneath utility lines, around critical infrastructure, and protects wildland-urban interface areas and more.  

PHOS-CHEK can be sprayed ahead of the fire season or during an oncoming wildfire threat. The fire retardant chemically alters wildland fuels to render them non-flammable and will completely stop the spread of a fire. One application will protect your property for 6-8 months

Emergency Service

  • Onsite support during a wildfire.
  • Installers deploy the fire blankets over your home/structure.
  • Installers deploy fire blankets over home/structure.
  • Fire blanket system is leased to customers during a wildfire and removed after danger has passed.

Providing LA County property owners and businesses with wildfire defense. UrbnTek is a family-owned business committed to protecting the Southern California community. Founded by Charles Castelo Sr. and Charles Castelo Jr, our company offers a variety of services including Phos-Chek fire retardant applications, property risk assessments, structure wrapping, and emergency support during wildfires.