Grease stains on a rooftop, a damp patch above a dining room and a sagging tile near a back door are three clues that tend to belong to the same roof, and they turn up on buildings that feed customers all day. Salt Lake City, UT places the Sugar House Business District around 2100 South and 1100 East/Highland Drive and describes a mix of local businesses and national stores, with retail, services, dining and entertainment. A district like that has roofs that serve many tenants at once, each with its own exhaust, its own hours and its own tolerance for noise. A Sugar House walk starts at the outlets, climbs to the seam, edge or bowl behind the water, and records which parts are sound, which have moved and where one small test would settle the matter.
What failed first: exhaust, grease and the roof around them
Where restaurants and food service operate, the first roof problem is often the kitchen exhaust. Fans discharge warm, greasy air, and the residue settles on the membrane near the curb. Grease softens many membranes, so the patch around a hood can wear faster than the rest of the roof, and a grease pan that is full or missing makes it worse. We check the exhaust path, the containment, the curb flashing and the membrane within a few feet of every fan. Where grease has damaged the surface, we scope a repair with a membrane suited to the exposure and advise on keeping the containment working.
Beyond the fans, we look at units serving different tenants, because each tenant's unit adds a curb, a set of lines and a service path. A cluster of curbs close together is where water gets trapped between them and where a repair is hardest to reach.
Condensate lines are the quiet cousin of grease. A condensate pipe dripping on one spot all summer stains and softens the sheet there, and the patch is first to fail in winter; a line lying across the membrane without a support wears a groove. A short extension to a drain bowl, or a pad under the drip point, stops both. We note each condensate discharge on the sketch so the next visit finds it without searching.
Roof-walk notes: many tenants, one membrane
A multi-tenant building puts a single roof over many leases. A leak in one suite is rarely the tenant's alone, and the walk should say which tenant space sits under each section so repair responsibility is clear to everyone. The record includes a roof sketch that numbers each section and ties it to the suites below, the drain bowls, scuppers and overflow path, the curbs, ducts and pipes tenants added after the original roof, the parapet caps, copings and wall bases where signs or awnings attach, and every earlier patch with a mark for whether it holds.
A written roof condition report with photographs gives a landlord, a tenant and a lender the same picture. When the same few leaks keep returning, an infrared moisture survey shows how far the wet insulation reaches.
Drainage and melt: snow against signs, parapets and awnings
Repeated snowfall, freezing nights and warm summers are the pattern in the Salt Lake City airport's record, and drainage gets studied after a melt for that reason. In a commercial district with streetfront parapets, signs and rooftop screens, snow collects against every vertical surface. Melt from a drift against a parapet runs down the wall to the membrane edge. If the counterflashing has opened, the water enters behind it. If the drain is nearby and frozen, the water spreads sideways to the nearest seam.
Summer exposure matters too. In full sun a dark sheet gets hotter than the air over it, and the daily swing of swelling and shrinking works at laps, corners and curb bases. A seam failure repair is usually the story of many small cycles in a summer, finished off by a thaw.
Signs and awnings add their own joint. A bracket fastened through a parapet or a wall above the roof line gives water a path behind the flashing, and a sign that sways in wind pulls at its fasteners every day. The fix is a flashed base and sealed fasteners, or, where the sign is gone, removing the mount and patching the hole with matching material. We check every bracket on the walk because a retired sign bracket is a leak that nobody remembers installing.
Repair line: how much to fix while the tenants stay open
A patch is the right call where the surrounding membrane is sound. Repeat leaks in a zone, wet insulation or a soft deck move the line outward, and the new boundary is written down with its reason and a note of what stays hidden. Layers, wet insulation, tenant-added penetrations, roof access and what each suite does for business set the cost and timing. A repair may be enough for one tenant's section. A coating restoration can extend the life of a sound membrane across the building once seams and flashings are done. When the roof has failed, a staged replacement lets one section be opened and dried in at a time.
For a landlord with a lease schedule, we line the work up with tenant move-ins and renewals. Where a tenant plans a build-out that adds rooftop equipment, we mark the curb locations and routing in advance so new penetrations land on sound membrane.
The circulation and streetscape plans the city maintains for the district are a reminder that the street in front of a building changes. A lift that stood in the curb lane last year may not be allowed there next year, so we confirm the staging location with the manager each time instead of assuming it carries over from the last visit.
Seasonal timing: customers, deliveries and parking
A shopping and dining district has customers arriving all day and deliveries early. We ask the property manager about peak hours, loading areas, parking and entrances before choosing lift positions, and noisy tear-off goes in the hours when the fewest customers are inside. Materials arrive in small loads and are staged where they do not block a door. A section opens only if the crew can finish the dry-in before they go.
Owners with other properties can bring them to the same visit, for example in the Central Business District or in South Salt Lake.
Next check: send the suite list and the leak dates
A roof plan or sketch, the suites that reported leaks, the dates, repair invoices and the lease timeline help us tie findings to locations. If a restaurant tenant reports odor or grease on the roof, name the suite so we start near the exhaust. Owners with several properties across Salt Lake City can send the addresses together.
Commercial Roofing Questions
Why does the roof near a restaurant fan wear out first?
Grease and heat from the exhaust land on the membrane around the fan. Many membranes soften with grease, so we check the containment pan and the surface around it.
Who pays when one suite leaks under a shared roof?
The lease decides. What we supply is a roof sketch tying each section to the suites below, with photographs, so the landlord and the tenant read the same record.
Can the roof be worked on during business hours?
Often, with planning. We schedule the noisy steps for quiet hours, keep entrances and intakes clear and dry in each section the same day.
Is a coating a good fit for a retail roof?
On a sound base, yes. If insulation is wet or seams have split through, the coating would cover a problem, so we survey and repair first.
How do you keep a repair from blocking a delivery?
We agree on a lift position and a staging corner with the manager, bring material in small loads and set the dates around the delivery calendar.
Name the suite and the day
Tell us which suite is affected, the day the water shows up and how a crew would reach the roof. We will follow the likely water path and set the next test or repair line from the evidence.