A roof survey is the closest thing a building has to a physical exam. It tells you what condition the roof is really in, what needs attention now and how many good years are likely left. Without one, budgeting for repairs or replacement is mostly guesswork.
If you hire a commercial roofing company Minneapolis buildings depend on to survey your roof, here is what a thorough inspection should cover and what you should receive afterward.
Records and Interior Clues
A good survey starts indoors. The inspector reviews the roof’s age, warranty, past repair invoices and any drawings. Then they walk the top floor looking for ceiling stains, rusted deck, damp insulation and signs of past leaks. Interior clues often point to problem areas that look fine from above. Talking with maintenance staff and tenants helps too, because they often remember when and where drips appeared.
The Roof Surface
On the roof, the inspector walks the field of the membrane looking for:
- Blisters, ridges and wrinkles
- Splits, punctures and worn areas from foot traffic
- Open or weak seams
- Ponding water and the stains or debris it leaves behind
- Loss of surfacing granules or coating on asphalt-based systems
Roofs here go through wide temperature swings, from hot summer afternoons to bitter winter nights. Thermal expansion and contraction stretch and pull membranes, seams and metal edges each season, so an inspector pays close attention to shrinkage at corners and stress where the roof meets walls.
Flashings, Edges and Equipment
Most leaks start at transitions rather than in the open field. The survey checks base flashings at walls and parapets, coping and edge metal, curbs around HVAC units, pipe boots, pitch pans and skylights. Loose fasteners, cracked sealant and flashings pulled away from walls are common findings after a Minneapolis winter.
Drains get special attention. The inspector checks that strainers are in place, that drains are clear and that the roof slopes toward them. Overflow drains and scuppers should be open and unobstructed.
Moisture Testing
Wet insulation is invisible from the surface, yet it decides whether a roof can be repaired or recovered, or must be torn off. Many surveys include an infrared scan on a clear evening, when wet areas hold heat longer than dry ones, along with moisture meter readings.
Core cuts confirm the findings. A small sample is removed to show how many layers exist, what insulation is present and whether it is wet. Each cut is patched the same day. Two or three cuts on a typical roof can reveal whether an older system is hiding beneath the current surface.
What You Should Receive
A useful survey report includes:
- A roof plan marking problem locations and core cut results
- Photos of each issue with a short description
- Repairs ranked by urgency
- An estimate of remaining service life
- Options for repair, recover or replacement
Use the report to plan your budget for the next few years and to compare future bids on the same scope.
A survey every few years, plus routine spring and fall inspections, gives you a clear picture of the roof and keeps small problems from turning into emergencies.