Steel Entry Doors in Pasadena California
While steel is a good conductor of heat, it also provides excellent insulation. Many modern steel entry doors are insulated with foam cores in the center. Because these doors fit tightly, less air passes through them than other types. This prevents air infiltration, which can result in high energy bills. However, it's not always possible to eliminate air infiltration, so it's best to hire a professional for this job.
Several factors determine the performance of a steel entry door. The material's thickness is measured in gauges, with the lowest number indicating the thickest steel. Some industry professionals no longer use these gauges, but the best-performing doors are typically 24 or higher, ranging from 0.020 inches to 0.2 inches thick. This makes a door that weighs 1.15 pounds per square foot very energy-efficient. Some manufacturers also offer 20-gauge doors.