How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manfuactured and modular homes
What is the average life expectancy of stucco?
Friday, July 27, 2018
How long does stucco last?
Stucco over concrete block has an estimated lifespan of 60 to 80 years or more, with an average of 70 years, and stucco over a backer board or metal lath on a wood frame wall should last 50 to 70 years, with an average of 60 years. But both estimates are based on doing three maintenance projects regularly: Repaint and caulk every 7 to 10 years. Repair and touchup caulk around doors and windows midway between repainting. Walk along the walls and check for hairline cracks at least once a year, then use a masonry caulk to repair.
“And when you do your caulking, I recommend paying $5 to $7 a tube,” says Jeff Moser, of Southern Style Plastering & Stucco, in Alachua, Florida. “Good caulk is important."
So, how do you know when your stucco is at the end of its lifespan? “Look for areas of de-lamination, blistering, and also stain streaks down the surface—indicating a problem behind it,” according to Jeff. You have probably already seen a simulation of failing stucco at your favorite Italian restaurant as part of the decor: a ragged patch of missing wall surface with brick showing through and a few cracks around it.
You can call it Old World Charm when Chianti bottles are hanging in front of it, but on your own house that’s a problem. If you see defects developing in your wall surface, an experienced stucco contractor can evaluate them for you to determine whether repairs to the area or total replacement is necessary.
EIFS (Exerior Insulated Finishing System) has a similar life expectancy to stucco over wood frame. To learn more about his material, see our article What is the difference between EIFS and stucco?
And here’s a bar graph that compares the life expectancy of stucco to other types of residential siding.
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 our blog post ”How accurate are the average life expectancy ratings of home components? Are they actually useful?”
Also, we recommend reading Why is my stucco cracking?
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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