Why Arizona Caulking Fails Faster
Intense, near-constant UV exposure breaks down the polymers in standard exterior caulking faster than in climates with more cloud cover. Cracking, shrinking, and pulling away from the substrate are common signs of UV-driven caulk failure that show up years earlier in Arizona than the manufacturer's stated lifespan would suggest.
What to Check During Routine Maintenance
Window and door perimeters, stucco control joints, and any exterior penetration points (vents, fixtures, utility lines) should be visually checked for cracking or gaps at least once a year — ideally during a spring or pre-monsoon exterior walkthrough.
Why This Matters Beyond Appearance
Failed caulking isn't just cosmetic — it creates entry points for monsoon-driven wind and rain, dust infiltration, and in some cases pest entry. Catching and addressing failed caulk early is far less costly than dealing with water intrusion damage after a monsoon storm.