Roof Systems in Dearborn, MI

A roof system is a choice of layers, and in Dearborn, MI, the choice has to survive a cold season with 4,027 heating degree days at the local station. The membrane matters, but so do the insulation under it, the way it is attached and the details at curbs and edges. We start with the building use, since a food plant, a clinic and a storage shop do not ask the same things of a roof.

Single-Ply Membranes

Single-ply sheets are among the most common coverings on low-slope commercial roofs. TPO is a heat-welded white membrane common on offices and distribution buildings. PVC resists grease and chemicals and suits restaurants and process buildings. EPDM is a rubber sheet with a long record on large roofs, and KEE adds an alloy for heavy exhaust.

Layered and Spray-Applied Systems

Older roofs often show layers. Built-up roofing stacks plies and a surface, and modified bitumen uses reinforced asphalt sheets. Spray foam forms a continuous surface that suits roofs with many curbs and pipes, while silicone and acrylic coatings restore a sound roof without tear-off. Each has a limit. Foam needs a dry, warm window to apply, and a coating needs a clean surface and a dry base. Built-up and modified bitumen roofs give clear signs of age at the laps and the surface, which makes remaining service life easier to estimate.

Metal Roofing and Retrofit

Metal panels fit storage buildings, shops and some institutional roofs. Standing seam hides its fasteners and allows for movement. A metal retrofit places a new system over an aging one when the old panels can carry it. Fasteners, laps and sealants are checked first, because movement in cold weather works at every one of them.

Choosing for Snow, Thaw and Drainage

Snowfall in Dearborn comes to about 30.8 inches in a season that runs from November into April, and the freeze-thaw cycles inside it work at seams and edges. The system that wins is the one that fits the drainage, the equipment load and the existing assembly. Buildings on Warren Avenue and in the Fairlane area have different needs from a campus fieldhouse or a research lab, and the choice follows what the inspection finds.

Commercial Roofing Questions

Can a new system go over the old one?

Sometimes. A recover needs dry insulation, sound attachment and compatible layers. We confirm those with moisture readings and a test cut before recommending an overlay.

Which system handles grease best?

PVC and KEE are made for grease and oils, which is why they are common on restaurants and process buildings. Other membranes can work with careful detailing and cleaning.

Is a coating a substitute for replacement?

Only on a roof with a dry base and a sound surface. A coating over wet insulation or failed seams will not last.

How is the system chosen for a building with many rooftop units?

We weigh how many curbs and penetrations the roof has, because a system that flashes details well, such as foam or a welded sheet, can reduce leak points.