How to Tell Your Commercial Roof Needs an Inspection
I've walked a lot of roofs over the past 25 years, and the story is almost always the same. Nobody calls me when the problem starts. They call me after it's been a problem for months, usually right after a board meeting where someone asked why a $400 fix turned into a six-figure number.
Roofs tell you something's wrong before they actually fail. You just have to know what you're looking at.
Water stains showing up indoors, not just on the roof
If your maintenance staff mentions a stain on a ceiling tile, water has probably been getting in for a while. Membranes rarely fail all at once. A small puncture or a separated seam can leak quietly for months before anyone notices a drip. When I hear about a stain like that, I tell people to get someone up there that week, not next quarter.
Granules collecting in your gutters and drains
Some single-ply and modified bitumen systems shed granules or surface coating as they age. A little is normal wear. A lot, especially if it's piling up in your drains, tells me the membrane is thinning faster than it should be.
Water that won't go away
A little standing water after a hard rain is normal on a flat roof. I start paying attention when that same water is still sitting there two days later. Ponding adds real weight, stresses the membrane, and speeds up sun damage in that one spot. If the same low corner ponds after every storm, I want to see it in person.
Bubbling, blistering, or wrinkling
These tell me moisture has worked its way between layers, or the membrane has lost its grip on what's underneath it. It doesn't always mean there's a leak yet. It almost always means one's coming.
Cracked or split flashing
Most of the failures I've actually had to repair over the years didn't start in the middle of the roof. They started at the edges, around a rooftop unit, a vent, or a parapet wall. The field of the roof can look perfectly fine while flashing around one unit has pulled away just enough to let water in every time it rains. Those spots are easy to miss if you're only ever looking up from the parking lot.
Your roof is getting old and nobody's checked on it
Most commercial systems are built to last somewhere between 15 and 25 years, depending on the material and how it's been cared for. If nobody can remember the last time someone walked your roof, and it's been up there since before you started your job, that's reason enough to call.
What I'm actually looking for up there
A real inspection means walking the entire roof, checking every seam, every piece of flashing, every drain and penetration, and documenting what I find with photos and a written report. That report is what lets us plan a $2,000 repair this year instead of handing you a $200,000 replacement bid after something fails.
I offer free roof inspections for building owners and facility managers across Iowa and the Midwest, with a written report back to you within 48 hours. If it's been a while since anyone's been up on your roof, let's fix that before storm season makes the decision for you. Call me at (641) 629-1451 or visit encorroofing.com.
