Mold After Heavy Rain in Florence & Penrose, CO: Signs, DIY Limits & When to Call

After a stretch of heavy rain, Florence and Penrose homeowners tend to find out where their houses are weak. Maybe it's a musty smell in the crawl space that wasn't there last month, a water stain on a basement wall, or a dark spot creeping out from behind the washing machine. With the remnants of Hurricane Polo pushing a Flood Watch over eastern Fremont County this week, a lot of people are going to be asking the same question: is this going to turn into mold?

We're Stars & Bars, a small, veteran-owned restoration company out of Colorado City, and eastern Fremont County is part of our regular stomping ground. Here's what we want Florence and Penrose folks to know about mold after a wet spell — including what you can handle yourself and when it's time to call a pro.

Why Fremont County homes are prone to it

Fremont County is dry most of the year, which lulls a lot of people into thinking mold isn't a Colorado problem. But a few things work against homes around Florence and Penrose:

• Older housing stock. Florence's downtown and surrounding neighborhoods have plenty of homes built long before modern vapor barriers and foundation waterproofing.
• Crawl spaces. Many homes in the area sit over vented crawl spaces with bare dirt floors. When rain soaks the ground, that moisture rises straight into the subfloor.
• Irrigation and ditch water. Penrose's orchards and small acreages rely on irrigation, and saturated ground near ditches keeps moisture around foundations longer.
• Clay soils. Expansive clay holds water against foundation walls and can open small cracks for water to find.
• Swamp coolers. Evaporative coolers are common here, and a leaky one adds moisture right into the attic or ceiling.

None of that is a problem on its own. But combine it with several days of soaking rain and you've got the moisture mold needs.

How fast mold actually shows up

Mold spores are everywhere, indoors and out. They just need three things to grow: moisture, something organic to eat (drywall paper, wood, carpet backing, dust), and a little time. On wet materials, growth can begin within 24 to 48 hours.

That's why the days right after a storm matter more than anything else. Drying things out quickly usually prevents a mold problem completely. Letting wet drywall or carpet pad sit for a week almost guarantees one.

Signs to look for after the rain

Walk your house a day or two after the storm passes, and again about a week later. Look and sniff for:

• A musty, earthy smell, especially in the basement, crawl space access, closets on exterior walls, or under sinks
• Water stains or bubbling paint on walls or ceilings
• Soft or warped flooring, particularly near exterior doors
• Condensation or dampness on basement walls and windows
• Fuzzy or speckled growth — black, green, white or gray — on drywall, baseboards, wood framing, or stored boxes
• Allergy-like symptoms that get worse at home: stuffy nose, itchy eyes, coughing

If you have a crawl space, grab a flashlight and take a look. Standing water, wet insulation hanging down, or white fuzz on the floor joists are all red flags. Our guide to crawl space moisture damage goes deeper on what to look for down there.

What you can do yourself

For small, surface-level spots — the CDC and EPA generally put the DIY line at around 10 square feet, roughly a 3-by-3 patch — a careful homeowner can often handle it:

1. Fix the moisture source first. Cleaning mold without fixing the leak or drainage just means it comes back.
2. Dry the area thoroughly. Run a dehumidifier and fans. Aim to get indoor humidity below 50%.
3. Protect yourself. Wear an N95 mask, gloves and eye protection.
4. Scrub hard, non-porous surfaces with detergent and water, then dry completely.
5. Throw away porous items that got moldy — ceiling tiles, carpet pad, cardboard boxes. You can't reliably clean mold out of them.
6. Don't just bleach it. Bleach can lighten mold on the surface without dealing with what's growing into drywall or wood, and it adds more water to the problem. Never mix bleach with ammonia products.

We've laid out more on the DIY question in our guide to black mold signs and causes.

When to call a professional

Call in help if:

• The moldy area is larger than about 10 square feet
• Mold is inside walls, under flooring, in HVAC ducts or throughout a crawl space
• The water that caused it was floodwater or sewage
• Anyone in the house has asthma, a weakened immune system, or is very young or elderly
• The musty smell is strong but you can't find the source
• You're filing an insurance claim and need documentation

Professional remediation isn't just "stronger spray." It means setting up containment so spores don't spread to the rest of the house, running HEPA air scrubbers, removing contaminated materials safely, and drying the structure with commercial equipment while checking moisture readings until it's actually dry. Our crew includes IICRC-certified technicians trained in mold remediation, and we follow those industry standards on every job.

If you're seeing any of those signs, give us a call at (719) 676-2456 and we'll talk it through honestly — including whether it's something you can take care of yourself.

A quick word on insurance

Mold coverage depends heavily on what caused it. Mold from a sudden, covered water event (like a burst pipe) may be covered, at least partly. Mold from long-term leaks, poor maintenance, or surface flooding often isn't under a standard homeowners policy. Read your policy's mold and water sections, document everything with photos, and report water damage promptly. Our FAQ on water damage insurance and mold coverage covers the common questions.

Serving Florence, Penrose and all of Fremont County

We already help homeowners with water damage in Florence, and our mold remediation service covers all of eastern Fremont County — Florence, Penrose, Cañon City and the surrounding area. We're a local, family-run, veteran-owned team, not a franchise call center.

If this week's storm left your basement damp or your crawl space smelling off, don't wait for it to get worse. Call Stars & Bars at (719) 676-2456.