Commercial Painting Services in St. Louis: What Building Owners Should Expect on the Exterior
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A full commercial painting service on a building exterior covers far more than the finish coat. Expect a condition assessment, a written spec, a schedule built around your business, cleaning, repairs and caulking, primer, a multi-coat topcoat, and a warranty with paperwork you can file. If a bid leaves any of those out, ask why.
That list sounds obvious until you're holding three bids for an office building in Clayton or a retail strip in Chesterfield and they read like three different jobs. One says "paint exterior, two coats." Another runs four pages. This post walks through what each piece of a commercial exterior service should include, so you can tell which bid is describing the work your building needs. If you're still at the vetting stage, our list of questions to ask commercial painting contractors pairs well with this one.
What does a commercial exterior painting service include?
A complete service includes seven parts: assessment, specification, scheduling, prep, the coating system itself, the warranty, and closeout documentation. Each one shows up somewhere in a good written scope.
| Service component | What it should cover | What to ask |
|---|---|---|
| Condition assessment | Walk of every elevation, substrate ID, cracks, failed sealant, rust, chalking, moisture signs | Will I get the findings in writing? |
| Specification | Products, primer by substrate, number of coats, target film thickness | What dry film thickness are you building to? |
| Scheduling | Elevation order, work hours, parking and entrance plans, weather days | Which doors are affected, and when? |
| Prep | Cleaning method, repairs, caulking and sealing | Is repair priced in or billed as found? |
| Coating system | Primer plus multiple topcoat passes, applied to spec | How many passes, and how is thickness checked? |
| Warranty | Written terms, length, transferability | Does it transfer if I sell the building? |
| Documentation | Colors, product data, warranty certificate, project photos | What do I get at closeout? |
What happens during the condition assessment?
The assessment is where the real price gets set. An estimator walks the building, identifies each substrate, and notes what has to be fixed before anything gets coated.
A lot of St. Louis commercial stock is older brick, block, and metal that's been painted several times. Each layer of old paint is another thing the new system has to stick to. So a careful estimator checks whether existing paint is chalking or peeling, where sealant joints have pulled loose, and whether rust is starting at fasteners or panel laps. Missouri's freeze-thaw cycles open small cracks every winter, and they tend to show up first on the walls that take the most weather.
Owners sometimes assume an old, tired building is a lost cause. It usually isn't. One commercial customer put it this way after we coated his building:
"They took a building that had almost 35 year old paint on it and made it look brand new. Not only did Darren finish the paint work in a very timely manner but the ability to handle the degree of difficulty was what impressed me."
— Robby M.
That "degree of difficulty" is exactly what the assessment is for. You can't bid a hard building accurately from the parking lot.
Why does the written spec matter so much?
The spec is the part of the bid you can hold a contractor to. Without it, "two coats of exterior paint" can mean almost anything.
Ask for film thickness in writing. A typical exterior paint job goes on at roughly 1 to 2 mils. Rhino Shield's ceramic elastomeric coating is applied at 8 to 10 mils, which is 8 to 10 times thicker, and the topcoat goes on as a two-part application over the primer. Thickness is a big reason one finish fades and cracks in a handful of years while another keeps its look for decades.
The spec should also spell out prep for each surface. Masonry, metal and previously painted wood each need their own prep, and a bid that lists one approach for a mixed-substrate building is a bid worth questioning.
How is exterior work scheduled around a business?
Good crews work one elevation at a time and plan around your entrances, deliveries, and busiest hours. Your business stays open.
Summer is a busy stretch for exterior work in the metro, and it brings its own scheduling quirks. Afternoon thunderstorms can stop spraying for the day. Hot walls in direct sun can push work to the shaded side of the building in the afternoon. A service that plans for that up front, with weather days written into the timeline, won't surprise you with a missed finish date. Ask for the elevation order, the parking plan, and a single contact who answers tenant questions.
What prep and coating steps should the scope list?
The scope should list every step in order. Here's what a Rhino Shield of Missouri commercial scope covers:
- Cleaning. Power washing or a gentler wash method, chosen by substrate, to remove dirt, chalk, and mildew.
- Repairs. Cracks, spalled areas, loose trim, and rusted metal addressed before coating.
- Caulking and sealing. Failed joints cut out and resealed, gaps around windows and penetrations closed.
- Primer. Matched to each substrate.
- Ceramic topcoat. Multiple coats applied as a two-part application to the specified thickness.
Skipping any of those steps is how a fresh exterior starts peeling in two summers. If a bid compresses prep into a single line, ask what's actually included.
What warranty and documentation should you get?
Get the warranty in writing, and get a closeout packet you can hand to the next property manager or buyer. On wall coatings, Rhino Shield of Missouri provides a 25-year transferable warranty, compared with the one-year coverage that's common on a traditional paint job.
Closeout paperwork matters more than most owners expect. Keep the color names and formulas, product data sheets, the warranty certificate, and before-and-after photos together with your building records. BOMA International publishes operations and maintenance resources for building owners, and an exterior file like this fits right into that kind of maintenance planning. When someone asks five years from now what's on the walls, you'll have the answer in a folder instead of a guess.
A traditional repaint usually lasts 5 to 7 years. A coating system rated for 25+ years means you stop repainting every 5 to 7 years, and the building keeps the look that got people noticing it again. You can see how we approach that on our page about commercial exterior painting services in St. Louis.
Frequently Asked Questions
How much do commercial painting services cost?
Cost depends on wall area, height and access, substrate, and how much repair the building needs. For reference, traditional painters run about $5,000 to $7,000 per 2,500 square feet of exterior, and Rhino Shield runs about 2 to 2.5 times a traditional paint job up front. Exact pricing comes from an on-site estimate.
Can my business stay open while the exterior is painted?
Yes, in almost every case. Crews work one elevation at a time and keep entrances usable. Tenants on the active side may need to move vehicles and keep windows closed during washing and spraying.
How long does exterior paint last on a commercial building?
Traditional exterior paint typically lasts 5 to 7 years in Missouri weather before it needs to be redone. Rhino Shield's ceramic elastomeric coating is built for 25+ years and carries a 25-year transferable warranty on walls.
Do commercial painting services include roof coating?
Some do. Rhino Shield of Missouri offers Super Shield roof coatings for flat, sloped, and white roof systems, and those carry a 10–15 year warranty. Wall and roof work can be bid together or separately.
Get a Written Scope for Your Building
The fastest way to compare bids fairly is to start with a thorough one. Request a commercial estimate and we'll walk the building and put the scope in writing, or call 314-239-7947 Monday through Friday, 8 a.m. to 6 p.m.
