How To Look At A House
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What is the average life expectancy of a steel exterior door?
Sunday, June 21, 2020
How long does a steel exterior door last?
You can expect a steel exterior door to last 30 to 80+ years, with an average of 50 years. The primary factor that affects lifespan is weather exposure. A door that is under little or no roof overhang will corrode sooner, especially at the bottom third of the door. Salt air exposure near the ocean is also detrimental, while maintaining a protective paint coating and replacing gaskets and weather stripping as necessary will extend life.
Here’s a bar graph comparing life expectancy of a steel exterior door to other doors in a house.
Go to our blog post What is the average lifespan of the parts of a house? for rating of other house components. To understand the basis, potential use, and limitations of lifespan ratings, see How accurate are the average life expectancy ratings of home components? Are they actually useful?
Also, we recommend How many exit doors are required for a house? and Why is a double cylinder deadbolt lock on an exterior door a safety hazard? and What is the building code for fire resistance for exterior exit doors of a house? and What are the code requirements for safety tempered glass for doors?
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To learn more about doors and windows, see these other blog posts:
NOTE: These life expectancies are based on data provided by InterNACHI, NAHB, FannieMae, and our own professional experience. Because of the numerous variables that can affect a lifespan, they should be used as rough guidelines only, and not relied upon as a warranty or guarantee of future performance.
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