Thursday, November 3, 2005

Weatherstripping Hangar Doors

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Weatherstripping Update

Heat loss in a hangar is mainly lost through the hangar door. Obviously, when the door is open all the heated air can easily escape. Modern heating systems are designed for at least 3 to 4 air changes per hour. Normal heat recovery times should be about 15 to 20 minutes. If your door doesn’t open every 15 minutes then weaterstripping and insulating will reduce your heating bill. Heat loss through a hangar door come from the overall R-value of the door and air infiltration around the perimeter of the door. The proportions of heat loss depends on the configuration of the door, the effectiveness of the seals and the method of insulation. A 100 ft wide x 25ft high door with 4 door blades will have 325ft of seals. If a 1/4 inch gap existed between the seal and the door, then this would be equivalent to a 7 sqft hole in the hangar door. Properly weaterstripping your hangar door will bring benefits all year round. Not only does it serve to reduce the infiltration of cold air in the winter, it reduces the amount of dirt and dust that blows in all year round.

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