Crunch-resistant garage doors feature a layout that pushes fingers out of harm's way should they accidentally be placed too close to a shutting door. Tamper resistant bottom brackets lessen the chance of injury from garage door components under tension. The polyurethane insulation even provides better fire safety because this type of insulation reduces the number of smoke and flames in case of a fire. The thermal property of insulation is expressed as an R-value. A higher R-value reduces outside noise and aids the door work more quietly. Many Insultated Doors are constructed using polystyrene or polyurethane foam.

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