Leaks Around Unit Curbs
Each tenant bay usually has its own unit, and every curb is a joint in the roof. Cracked flashing there causes most of the ceiling stains in shops below. Each curb is flashed with reinforced fabric.
As a Munster metal roof coating contractor, we coat retail and office roofs with tenants open below, working to hours agreed with the building manager.


Munster metal roof coating on a storefront strip or office building happens while the doors stay open, so the plan starts with the tenants.

Before the first wash, we agree on work hours, the staging area behind the building, and which walkways stay clear. Noisier prep, like grinding rust or replacing screws, is scheduled for the hours tenants choose.
Rooftop units over each bay are part of the job: curbs are resealed and intakes masked during spraying, with the manager told ahead of each shutdown.
Retail and office roofs in Munster tend to fail in the same four places.
Each tenant bay usually has its own unit, and every curb is a joint in the roof. Cracked flashing there causes most of the ceiling stains in shops below. Each curb is flashed with reinforced fabric.
Water drains to the back of a strip, where scuppers and gutters fill with leaves and grit. Backed-up water then finds the laps nearest the wall. Clearing them is part of every job here.
Panels meet over the walls between tenants, and those laps open with movement. They are resealed and reinforced before coating. Reinforced sealant bridges each wall lap.
Dark or bare metal over small shops heats the space below in summer. A white coating reflects much of that sun off the panels. Cooler panels mean cooler back rooms.
On a building full of tenants, coating helps every business below while they stay open.
Retail and office buildings here mix metal, flat, and sloped sections. These four systems cover them.

Exposed-fastener steel over the bays gets screws and laps sealed and a full coat. Unit curbs on each bay are flashed in the same job.
Hammond commercial metal roof coatingFlat sections that hold water near the scuppers get silicone. Scuppers are cleared and checked before coating.
Hammond silicone roof coating
Pitched metal over storefronts that drains fast can take acrylic. Acrylic is scheduled for warm, dry weeks.
Hammond acrylic roof coating
Office wings that run cold can take spray foam with a topcoat. The foam gets a coating on top against sunlight.
Hammond spray foam roofingThe source is usually the unit curb or lap right above it. Call and we will trace it before the stain spreads.
Every step is scheduled with the manager so tenants know what is happening above them.
We walk the roof with the manager, trace ceiling stains to the curbs or laps above them, and check scuppers, gutters, and every rooftop unit.
Work days, quiet hours, staging, and unit shutdowns are agreed and posted for tenants before any prep starts.
Panels are washed, scuppers cleared, and loose screws, open laps, and curb flashing repaired.
Rust at laps and around curbs is brushed back and primed before coating.
The roof is coated in blocks that match the agreed hours, with units restarted as each area finishes.
We also coat commercial roofs in Gary, East Chicago, Highland, and Dyer.
Outside these towns? Call us or send us a message.
Answers for owners and managers of Munster retail and office buildings.

Retail strips, office buildings, and service shops across Munster are in our area. Call with the address and we will set an inspection with the property manager.
Roof access, the tenant list, and preferred work hours. With those, we schedule prep and spraying around business hours and post notices for each tenant.
Planning figures run about $2.50 to $4.00 per square foot to coat and $5 to $8 to replace. On retail roofs, the number of unit curbs, scupper repairs, and how much work has to happen outside business hours move the price.
Offices, retail buildings, and service shops in Munster all qualify. We inspect, seal seams and screws, treat rust, and pick silicone or acrylic by drainage and slope, with tenants below barely affected.
Often, if tenants prefer it. Weekend and early-morning work is planned during the inspection, along with any unit shutdowns that go with it.
Rarely. Work is on the roof, so inside spaces stay as they are. Tenants near a unit being shut down for spraying are told the time ahead, and back doors used for staging are agreed in advance.
Send the address and a list of the tenants below. We will plan the work around them and price the coating.