Stucco is a very tough material, but it is not completely indestructible, especially around here.
If you live anywhere from the historic Claremont Village up toward the foothills, you already know what our local climate in Claremont, CA dishes out. We get relentless dry heat all summer, low humidity for months on end, and then those sudden winter downpours that test every square inch of your exterior walls. Add in our local soil conditions—which often shift and settle—and your Stucco has to work overtime just to keep your house protected.
Over at Classic Stucco & Plastering, we get calls all the time from homeowners wondering how to keep their exterior looking sharp without constantly spending money on Stucco repairs. The secret is not magic. It is just catching small issues before they turn into major problems.
How to Extend the Life of Your Stucco
You do not need a degree in construction to look after your walls. Most preventative care comes down to keeping water away and letting the material breathe properly.
First, watch your landscaping. We all love lush greenery, but keeping sprinklers hitting your exterior wall is the fastest way to invite trouble. Constant moisture leads to efflorescence—that chalky white buildup—and eventually breaks down the bond of the Finish Coat. Adjust your sprinkler heads so they spray your lawn, not your house.
Second, keep up with the paint. A good elastomeric or high-grade acrylic coating acts like skin for your Stucco. It seals out moisture while still allowing the building to flex when temperatures swing from scorching afternoons to chilly desert nights.
What Regular Maintenance Looks Like
Maintenance does not mean spending your weekends scrubbing walls. Keep it simple.
Give your house a gentle rinse once or twice a year using a standard garden hose. Do not blast it with a high-pressure commercial power washer. Too much pressure can blast away the texture or force water straight through hairline cracks. If you spot dust or cobwebs, a soft-bristled brush and some low pressure will do the job just fine.
Walk the perimeter of your property every few months. Look closely around window frames, doors, and where the wall meets the foundation. Those transition points take the most abuse.
Warning Signs You Should Not Ignore
Not all cracks are created equal. If you see a hairline crack that is as thin as a pencil hair, that is usually just normal settling from our Claremont clay soil. You can seal those up with a bit of matching elastomeric patch during your weekend chores.
However, some red flags mean you need to dig deeper:
- Cracks wider than a nickel or ones that run diagonally across corners.
- Bulging or hollow-sounding spots where the Stucco is separating from the wire mesh underneath.
- Dark, damp staining that stays wet long after the rain has stopped.
- Rust streaks bleeding through the surface, which usually means the Lath inside is rusting out.
When to Call a Professional
There comes a time when do-it-yourself patch kits are simply not going to work anymore. If you notice widespread cracking, crumbling Finish Coats, or signs of moisture trapped behind the wall, bring in some backup. Patching over a deeper structural issue or water intrusion will only trap the damage and cost you more down the road.
Classic Stucco & Plastering provides Stucco services for homes and businesses in Claremont. Taking care of your exterior now means fewer surprises later, keeping your Stucco solid for 15 to 20 years or more.