Exterior House Painting in St. Louis: A Homeowner's Start-to-Finish Guide
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Exterior house painting in St. Louis runs in five stages: plan the scope and timing, collect written bids you can compare, prep the surface, apply primer and finish coats in the right weather, and get the warranty in writing. Prep decides most of how long the job lasts, because Missouri humidity, hail, and freeze-thaw punish every shortcut.
That's true for a 1920s brick bungalow in South City and for a newer fiber cement house in Chesterfield. Here's the whole job in order, with the questions worth asking at each step.
How do you plan an exterior house painting project?
Start by walking every side of the house with a notepad before any contractor shows up. Write down what you see, decide what you want the job to accomplish, and figure out roughly when it needs to happen.
Look for the things that change a scope. Peeling or blistering paint. Chalky residue that comes off on your palm. Soft wood at the bottoms of trim boards and window sills. Caulk that's cracked or pulled away from the joint. Green or black mildew on the north side, where the sun never really dries the siding out. Dents or bare spots from last spring's hail.
Then be honest about your goal. A color refresh before you sell is a different project than protecting a house you'll keep for twenty years.
Timing matters more than people expect. Summer schedules fill quickly in the St. Louis area, and July heat brings its own problems: dark south- and west-facing walls get hot enough in the afternoon that many products shouldn't go on them, and pop-up storms can wash out an uncured finish. Good crews work around this by following the shade around the house.
One more planning item. If your home was built before 1978, assume there's lead paint somewhere under the newer layers. Any contractor who scrapes or sands it needs to follow the EPA's Renovation, Repair and Painting rules, which cover containment and cleanup. Ask for the firm's certification before you sign anything.
Should you paint the house or apply an exterior coating?
It depends on how long you're staying and what condition the siding is in. Conventional paint costs less up front. A ceramic elastomeric coating costs more but is built to stop the repaint cycle.
Here's how the two compare using the figures we publish on our Rhino Shield cost comparison page:
| Traditional exterior paint | Rhino Shield ceramic coating | |
|---|---|---|
| Typical cost (2,500 sq ft exterior) | $5,000–$7,000 | About 2 to 2.5 times a paint job |
| Expected service life | 5–7 years | 25+ years |
| Dry film thickness | 1–2 mils | 8–10 mils |
| Material used (2,500 sq ft) | About 10 gallons | About 40 gallons |
| Warranty | Often 1 year | 25-year transferable warranty |
If you're selling soon and the siding is sound, paint is usually the sensible spend. If you're tired of scheduling a repaint every 5–7 years, the math on a coating starts to look different. Exact pricing for either one comes from an on-site estimate, not a website.
How do you compare exterior painting bids?
Compare the written scopes line by line, not the bottom-line numbers. Two bids that are $3,000 apart often describe completely different jobs.
Every bid you collect should spell out:
- How the house gets cleaned (pressure, soft wash, or hand wash) and how long it dries before primer
- What repairs are included, and what happens if the crew finds rot behind a trim board
- Whether all joints get re-caulked or just the obvious gaps
- The primer and finish products by name, plus the number of coats
- Which surfaces are covered: siding, trim, soffits, fascia, doors, shutters, gutters
- Daily cleanup and a final walkthrough
- Warranty length, what it covers, and whether it transfers to a buyer
Ask for a certificate of insurance too, showing general liability and workers' compensation. It's the check people skip. Local exterior painters with a long track record should also be able to name finished houses you can drive past, ideally a few years old rather than a few months.
What does proper exterior prep involve?
Proper prep means a clean, dry, sound surface before any primer goes on. That sounds simple. It's where most paint failures start.
The house gets washed first, to strip off dirt, chalk, pollen, and mildew. Then it has to dry, and in a humid St. Louis June that can take longer than you'd think. Loose and peeling paint gets scraped back to material that's firmly bonded. Damaged wood is repaired or replaced. Joints around windows, doors, and trim get sealed with fresh caulk. Bare wood and repaired spots get primed.
Skip any of that and the new finish is only as good as whatever's underneath it. Paint applied over chalk or mildew can let go in a single season.
How is exterior paint or coating applied?
The finish goes on in coats, in weather that falls inside the product's label range for temperature and humidity. Most crews spray and then back-roll or brush to work material into the surface.
Watch the conditions. Morning dew on siding, a storm rolling in mid-afternoon, or a wall sitting in full July sun can all compromise a coat. A careful crew will move to another side of the house or wait rather than push through.
On a Rhino Shield of Missouri job, application follows a fixed sequence after the wash, repairs, and caulking: a primer matched to the surface, then multiple coats of ceramic topcoat built up to 8–10 mils. That thickness is what lets the system flex with Missouri temperature swings instead of cracking.
Crew conduct matters as much as the coating. One homeowner put it this way:
"There is nothing to compare with the results of Rhino Shield. The paint crew were courteous, respectful and absolute professionals. The end result is spectacular. My house is the envy of my neighbors."
— Pat B.
You'll have people working around your house for days. Respectful crews make that easy.
What should an exterior painting warranty cover?
A good warranty is written, states its length plainly, says what it covers and excludes, and tells you whether it transfers if you sell. A verbal promise isn't a warranty.
Many painting warranties run one year and cover workmanship only. That's not a knock on the painter; a thin film simply isn't expected to last decades. Rhino Shield carries a 25-year transferable warranty, which is a selling point if you list the house down the road. Our St. Louis exterior painters walk through the warranty terms at the estimate so there are no surprises later.
Keep the paperwork, product names, and colors with your house records.
Frequently Asked Questions
How long does exterior house painting take?
Most single-family homes take somewhere between a few days and two weeks of working time. Size, the amount of repair, the number of stories, and the weather drive the spread. Rain days and drying time after the wash add to the calendar, so ask your contractor for a realistic range, not a best case.
What's the best time of year to paint a house in St. Louis?
Late spring through fall, when temperatures stay within the product's label range. Summer works fine if the crew avoids hot, sun-baked walls and watches for afternoon storms. Avoid stretches with heavy morning dew or rain forecast before the finish can cure.
How much does exterior house painting cost in St. Louis?
Traditional exterior painting runs about $5,000–$7,000 per 2,500 square feet of exterior, based on the comparison on our cost page. Rhino Shield runs about 2 to 2.5 times that up front but is built to last 25+ years. Your exact number depends on size, condition, and access, so it comes from an on-site estimate.
Do I need to be home while the house is being painted?
Usually not. The crew needs access to an outdoor water spigot and power, and you'll want pets inside, windows closed, and cars moved away from the work area. Plan to be reachable by phone in case the crew finds damage that changes the scope.
Ready to plan your exterior project?
If you'd like a written scope you can compare against other bids, request a free estimate or call us at 314-239-7947. We're in the office Monday through Friday 8 a.m. to 6 p.m. and Saturday 10 a.m. to 2 p.m.
