You've invested good money in your commercial building's stucco, and you want it to last. That's smart. Stucco is incredibly durable, especially here in Pasadena where we get plenty of sun and not a ton of rain, but it's not set-it-and-forget-it. A little regular attention goes a long way in extending its life and keeping your business looking professional.
Regular Maintenance: What You Need to Do
Keeping your commercial stucco in good shape isn't rocket science, but it does require some consistency. Think of it like changing the oil in your car – skip it, and you're asking for trouble.
Routine Cleaning: This is probably the easiest thing you can do. Dirt, dust, and even some mildew can build up, especially on north-facing walls that don't get as much sun. A simple low-pressure wash with a garden hose is usually enough. For tougher spots, you can use a mild detergent and a soft brush. Just make sure to rinse thoroughly. You don't want soap residue drying on the surface. Do this once or twice a year, or more if your building is near a busy street or gets a lot of tree debris.
Check Your Gutters and Downspouts: Seriously, this is huge. Clogged gutters mean water overflowing and running down your stucco walls. That constant stream of moisture can lead to staining, mildew growth, and eventually, even damage to the stucco itself. Make sure they're clear, and that downspouts direct water away from the foundation. This is especially important in areas like the Bungalow Heaven district where older homes and businesses might have original, sometimes quirky, drainage systems.
Trim Back Landscaping: Keep bushes, trees, and vines from growing directly against your stucco. They trap moisture, block sunlight, and can even physically damage the surface over time. Give your stucco some breathing room.
Inspect Sealants: Check around windows, doors, and any penetrations (like pipes or electrical conduits) for cracked or failing caulk. These are common entry points for water. If you see cracks, re-caulk them promptly with a good quality, paintable sealant.
Warning Signs of Stucco Problems
Catching problems early is key to preventing expensive repairs. Walk around your building a few times a year and really look at the stucco. Here's what to watch out for:
Cracks: Small hairline cracks are pretty normal with stucco as the building settles and expands/contracts with temperature changes. But larger cracks, especially those that are wider than a credit card, spiderweb, or run horizontally/diagonally for long distances, can indicate a bigger issue. They're basically open invitations for water to get in.
Stains or Discoloration: Dark streaks, green patches, or rust-colored stains are red flags. Green or black usually means mildew or algae, often due to persistent moisture. Rust stains could be from metal flashing or fasteners failing behind the stucco.
Bulges or Soft Spots: If you see areas where the stucco looks like it's bulging out, or if you gently tap on it and it sounds hollow or feels soft, that's a serious problem. This almost always means water has gotten behind the stucco and is damaging the substrate underneath. Don't ignore this.
Peeling Paint: If your stucco is painted and the paint is peeling or blistering, it could be a sign of moisture trapped behind the paint layer. This often happens if the wrong type of paint was used, or if there's an underlying moisture issue.
When to Call a Professional
Look, some things you can handle yourself, like cleaning or basic re-caulking. But for anything beyond that, you really need to call in the pros. Trying to fix a major stucco problem yourself without the right experience or tools can make things worse and cost you more in the long run.
You should definitely call a professional if you see:
Large or numerous cracks that you can't easily patch.
Any signs of water intrusion, like persistent staining, bulges, or soft spots. This usually means there's damage to the underlying lath or sheathing.
Extensive mildew or algae that won't come off with a simple wash.
If you're unsure about the cause of a problem or how to fix it properly.
Here at Pasadena Stucco & Plastering, we've seen it all. We know the unique challenges our local climate presents, from those hot, dry Santa Ana winds to our occasional heavy rainfalls. Getting an expert opinion early can save your commercial property from significant damage and keep your stucco looking great for decades. Don't wait until a small issue becomes a massive headache for your business.