Buffalo Grove (IL) police and firefighters were called to 25 Dellmont Court today (8/26/20) for a house fire. First arriving units had fire from a roof vent of a two-story, single-family house. The alarm was upgraded to a Code 4 working fire and then to a MABAS Box Alarm for additional resources. Companies advanced several lines into the house and had difficulty gaining access to the attic. The fire self vented through the rear with flames and heavy smoke pushing out. An exterior line was used to darken down the fire before companies were again able to make an interior attack. The alarm was later elevated to a 2nd Alarm for additional manpower due to the excessive heat. Two firefighters were transported from the scene with heat related injuries.