Backed-Out Screws
- You See
- Screw heads standing proud of the panel with cracked rubber washers.
- What It Means
- Each loose screw is an open hole in the roof. We replace or oversize them and seal every head before coating.

As a Bloomington metal roof coating contractor, we clean, prime, and seal commercial steel roofs, then coat them in place over warehouses, shops, and plants.
Bloomington metal roof coating works when the steel underneath is still solid. Match what you see on your roof to the column that describes it.
| What You See | Ready To Coat | Fix Before Coating | Points To Replacement |
|---|---|---|---|
| Rust | Surface rust and chalky paint | Rust scale at laps and screw rows | Holes you can see daylight through |
| Screws | Tight screws with worn washers | Backed-out or stripped screws | Purlins too rotted to hold new screws |
| Seams And Laps | Closed laps with dried sealant | Open laps along the eave | Panels buckled out of line |
| Insulation | Dry under the panels | Wet in a few marked spots | Soaked across most of the roof |
| Water Flow | Sheds within a day of rain | Low spots near curbs or gutters | Sagging bays that hold water |
| Panels | Solid steel with full ribs | A few panels rusted through | Many panels rusted through |
These six conditions bring most building owners to us. Each card names what you see and what it means for the coating work.
Five coating systems cover the metal, low-slope, and shingle roofs on Bloomington commercial property. Each card shows the order the work goes on.

Exposed-fastener steel roofs on shops, warehouses, and mill buildings get new washers at every screw, sealed laps, and a full coating system over the cleaned panels.
Order Of WorkLow-slope roofs that hold water after a storm suit silicone, which keeps its seal under standing water and holds up well in summer sun.
Order Of Work
Sloped metal roofs that drain fast take water-based acrylic in two colored coats, applied on dry, mild days from spring through fall.
Order Of Work
Spray foam builds one insulating layer over old metal or flat roofs, and a protective topcoat keeps sunlight off the foam.
Order Of Work
Office, clinic, and church buildings with asphalt shingle sections get a shingle-rated coating once loose tabs and flashings are fixed.
Order Of WorkA stain over the shop floor usually traces back to a screw row or a lap above it. Call us and tell us where the water shows up.
Call UsOne crew handles each step in order, so the building below keeps working while the roof is sealed.
We walk every panel run, test screws by hand, check laps and curbs, and take moisture readings over the insulation. You get a marked plan showing what gets repaired and what gets coated.
Backed-out screws come out and larger ones with new washers go in. Rusted-through panels are swapped, and failed curb flashings are rebuilt before any cleaning starts.
Pressure washing strips dirt, chalk, and loose scale. Bare and rusted steel then gets a rust-inhibiting primer matched to the coating system on your building.
Every lap, end lap, and screw head is covered with reinforced mastic or fabric and coating. These are the spots where metal roofs leak first.
Coats go on to the specified thickness across ribs and flats. A wet-film gauge is used as we work, and the finished roof is walked one more time with you.

Coating keeps the roof you have and fixes its leak points. Replacement makes sense when the steel itself is failing.
| What Changes | Coating The Roof | Replacing The Roof |
|---|---|---|
| Tear-Off | Old panels stay on the building | Panels and screws removed and hauled away |
| Building Use | Work happens above occupied space | Open bays below often get covered or cleared |
| Price Range | About $2.50 to $4 per sq ft | About $5 to $8 per sq ft |
| Leak Points | Screws and laps sealed in one pass | New screws and laps on new panels |
| Later Upkeep | Recoat the surface as it wears | New panels painted or coated later |
| Best Match | Solid steel with surface problems | Steel rusted through across the roof |
Outside the towns below? Please call us or send us a message. We coat commercial metal roofs in Bloomington, Bedford, Washington, Martinsville, Ellettsville, and Salem.
Steel shops and older warehouses here need their screw rows and eave laps sealed before winter.
Bedford metal roof coatingFarm, storage, and processing buildings get checked for hail chips and rusted laps before coating.
Washington metal roof coatingRetail and office roofs are coated in sections so the stores and offices below stay open.
Martinsville metal roof coatingStorage rows, shops, and offices on shared lots are coated one building at a time.
Ellettsville metal roof coatingIndustrial roofs are split into sections and coated one area at a time over working floors.
Salem metal roof coatingShort answers first, then the detail, for the questions owners ask most on a roof walk.
It pays off when the panels and framing are solid and the leaks come from screws, laps, flashings, or worn paint. Coating seals those points while your business keeps running underneath. On a roof with panels rusted through in many places, or insulation soaked across most bays, the money goes further on new panels.
Surface rust is fine once it is treated. Mill and shop buildings tend to carry dust and heavy scale at the laps, so we wash hard, remove loose rust, prime bare steel, and swap any panel with holes. Seams and screws are sealed next, and the coating goes on last.
Coating life comes down to the chemistry, the thickness applied, how well the panels were cleaned and primed, and how fast water leaves the roof. Hail, heavy foot traffic around units, and skipped inspections shorten it. A recoat before the film wears through extends it without repeating the full preparation.
Plants with solid panels and leaks at screws, seams, and flashings fit coating, and the deck stays closed over production areas while the work goes on. Replacement fits when panels are perforated across the roof or the structure is failing. A moisture survey and panel check show which path your plant is on.
Our published coating range is about $2.50 to $4 per square foot, set after an inspection. Roof size, rust treatment, the number of screws and laps to seal, panels to swap, lift access, and the system chosen move the price within that range. Replacement runs about $5 to $8 per square foot.
Coatings need a dry surface and air warm enough to cure, so spring through fall is the working season. We plan around days with rain on the way and nights near freezing, which slow curing. Fall work also seals screw rows and laps before winter meltwater tests them.
Tell us the roof size and what you see from the ground or inside. We inspect the roof and price the coating for your building.