Coast Guard Station Roofing Near Dearborn, MI
A helicopter hangar roof has one job that no office roof shares: it must keep weather off aircraft that may be called out at any hour. Coast Guard Air Station Detroit flies five MH-65 helicopters out of Selfridge Air National Guard Base on Great Lakes search-and-rescue duty, and its listed missions also include law enforcement, icebreaking and environmental protection. Any roof work around that operation has to respect a standing readiness requirement.
Selfridge lies about 26 miles northeast of Dearborn, MI. For weather, the nearest reference is the Dearborn station, which logs about 35 inches of precipitation spread across most months, so drains and seams stay busy in every season. We approach a station roof the way we approach a large aircraft hangar roof, with extra attention to when the building can be opened to the weather.
Hangars, Shops and Support Roofs at an Air Station
The Coast Guard reports that Air Station Detroit was commissioned in 1966, first occupying an excess Air Force hangar, and that its current facility was completed in 1967. A facility manager reading that timeline can see two separate buildings behind the unit, and the roof history of each should be collected before any scope is written: what was installed, what was repaired, and where.
Aviation buildings combine a very large enclosed volume with a roof that is difficult to reach and expensive to disturb. We separate the work into the hangar bay, the shop and administrative wings, and any lower connecting roofs, since each has its own assembly and its own risk. A leak above an aircraft bay or an electronics room gets a different priority than a leak over a corridor.
Working Around Readiness Hours
A search-and-rescue unit cannot plan its workday the way a warehouse does. Roof work on a station has to avoid blocking aircraft movement, keep hangar doors operable and leave emergency routes clear. The practical consequence is that tear-off is staged in small sections, each dried in before the day ends, with temporary protection ready if a launch or a forecast changes the plan.
Base access adds its own layer: badging, escorts, vehicle checks and designated staging. Federal roof specifications usually point to the Unified Facilities Criteria for roofing, and that document sets how materials and inspections are handled. We build the access window with the station contact, then confirm it again before mobilizing. The same discipline we use on an occupied building reroofing project applies here, with fewer people allowed on the work area. A National Guard armory roof raises many of the same scheduling questions.
Wind, Hail and the Edge of a Large Roof
Large low-slope roofs fail first at the perimeter, where wind pressure is highest. Edge metal pulls loose, the membrane flutters, and a small lifted corner becomes a tear. In September 2026 the NWS recorded severe weather over Southeast Michigan, with large hail and damaging winds on the same dates; Lincoln Park saw an EF-0 and Detroit an EF-2. Those events are a reminder to inspect edges, flashings and mechanical covers after a severe storm.
On a hangar or shop roof we check the coping and gravel stop for tight fasteners, then look for creases in the membrane that show the sheet has moved. A wind-damaged roof that is secured quickly keeps water out of the insulation; one left for a few weeks usually needs section replacement. Hail leaves bruising and punctures that are easier to find with a drone pass than from the ground.
Metal and Membrane Choices for Aviation Buildings
Station roofs may be membrane, modified bitumen or metal, and we do not assume which until we are on the roof. A standing seam panel system sheds snow and ice quickly but needs clip and seam inspection. A modified bitumen roof tolerates traffic from service crews but shows its age at laps and flashings. A single-ply membrane is quick to repair when the field is sound.
Where a roof has taken on water, the insulation decides the scope. Wet polyisocyanurate loses insulating value and holds weight, so we use moisture mapping to define the area that must be removed. The remaining roof can then be patched, coated or recovered according to its remaining service life. Our written findings separate those options so a station manager can fund the roof in stages.
Replacement Without Closing the Hangar
Replacing a hangar roof while aircraft are inside is a planning exercise before it is a construction one. We map the building into work areas, decide which sections can be open at any time, and set the order so the roof never has more exposed deck than the crew can close in a single shift. Heavy equipment is positioned to keep the hangar apron free.
Insulation and cover board selection matters on a roof with this much volume beneath it. A thicker assembly raises the R-value and adds stiffness against wind; a cover board protects the membrane from foot traffic around rooftop equipment. Drainage deserves equal attention: on large roofs, tapered insulation and added drain capacity can prevent the ponding that shortens membrane life. A change in roof insulation and cover board is often the most useful part of the upgrade.
Inspection Rhythm for Station Roofs
A station that must stay ready cannot afford a surprise leak. We recommend a spring and fall walk, plus a visit after any severe wind or hail event, with attention to drains, edge metal and coping, penetrations and equipment curbs. Each visit ends with a short written summary of what was cleaned, tightened or sealed, and what should be watched before the next freeze-thaw season. Over time those summaries show whether a seam, flashing or drain is repeating its failure, which is the signal that a repair boundary should grow.
If a roof opens during a storm, emergency roof repair is available around the clock, holidays included, and we document what was found so the permanent scope can follow.
Commercial Roofing Questions
Can a hangar roof be repaired while aircraft remain inside?
Often yes, provided the work is staged in small sections and each one is closed in before the shift ends. The station contact decides which bays must stay clear, and we position tools and materials to stay out of the way. Large replacements may need aircraft moved, which is a scheduling decision for the unit.
How do we limit risk to equipment below a leaking roof?
Temporary protection comes first: tarps, a patch at the entry point, or diverted drainage. Then moisture mapping shows how far the water has traveled in the insulation. That sequence protects the equipment below while the permanent repair is scoped.
What does a post-storm roof check cover after a severe wind event?
We look at edge metal, coping, rooftop covers, flashings and seams, then compare the roof to the previous condition record. If hail was reported, we check for bruises and punctures in the membrane. The report notes which items need immediate repair and which can be scheduled.
Why do roof records matter on a station that has had several building changes?
Older additions and re-roofs leave different materials and details across the same building. Knowing which section has which assembly lets a repair crew choose compatible patching materials. A roof diagram with dates and prior repair locations saves time and avoids mismatched details.
Do federal roofing standards change the choice of membrane?
They can. Specified criteria set performance expectations for wind uplift, insulation, drainage and installation quality, and submittals follow that standard. Within those criteria several membranes are acceptable, so the choice still depends on the roof's condition, access and maintenance plan.
Book a Roof Inspection or Emergency Response
Call Commercial Roofing Dearborn to schedule an inspection of a hangar, shop or support building roof, or to request emergency response when water is entering. We document the roof condition, drainage and moisture, then give written findings that support a repair, replacement or monitoring decision.
