Your commercial roof doesn’t ask for much. A little attention twice a year, maybe a look after a bad storm. That’s it. Skip it, though, and you’re looking at pooling water, rotted decking, and a repair bill that could’ve been a maintenance call.
Most commercial building owners in New Hampshire don’t think about their roof until something’s dripping onto the office floor. By then, you’re not talking about maintenance anymore. You’re looking at a claim.
Here’s what a proper inspection routine actually looks like, and why it’s worth putting on the calendar.

When to Inspect
Comfortable heading up there yourself? Inspecting a commercial roof is manageable with the right precautions, but there are still risks to be generally cautious of.
If ladders and rooftops aren’t your thing, call us and let our team handle it. That’s the whole point of having a roofer on speed dial.
Spring
Once the snow’s finally gone, if you’re a DIYer, this is the time to look on the roof. Winter is hard on flat and low-slope roofs. Ice, freeze-thaw cycling, weight from snow load. Check for standing water, clear out any drains that got clogged over the season, and take stock of what the winter left behind. If you’re unsure, call the Conde team for help.
Fall
Before the cold sets back in, clear off whatever summer piled up around the space. Leaves, branches, debris. Flashing is installed around parapet walls, roof edges, HVAC curbs, skylights; any areas where the roof is punched into a membrane. From the safety of inside your building, you can check for leaks where these parts would meet. Brown ceiling stains are some clear first indicators there’s a leak happening in the plenum space. A flashing that’s starting to lift in October is a leak waiting for the first hard freeze.
After a storm
If you’ve had winds over 50 mph or a ton of rain, get eyes on the roof within 48 hours. Not next week. Waiting can complicate an insurance claim if you can’t clearly separate storm damage from wear and tear.
What We Actually Look At
A real roof inspection is not a glance from the parking lot. Our crew details the roof and checks four areas every time, and finds problems that a rooftop photo from the ground on your cameraphone can’t.
- Surface membranes. TPO and EPDM fail in different ways. EPDM shrinks with age and pulls away from flashings, leaving gaps a homeowner would never think to look for. We know where each membrane type tends to give out first.
- Drainage. Blocked gutters, scuppers, and downspouts back up fast, and pooling water eats through a membrane in months, not years. Water sitting on your roof 48 hours after rain stopped means a drainage problem has already started.
- Flashings and penetrations. Vents, pipe boots, and HVAC units are the spots where water finds a way in. Our team checks every seal for gaps, corrosion, or separation, the kind of wear invisible from ground level.
- Interior signs. We do not stop at the roof deck. We walk your top floor and check ceilings and walls for stains, rot, rust, or the musty smell signaling moisture already found a way in from somewhere above.
None of this is a five-minute walk-through. A trained eye catches wear early, before a leak forms, and 20-plus years on New Hampshire roofs tells us exactly where to look first.
Why a Walk-Through Is Not an Inspection
A quick look from the parking lot tells you if debris piled up. It tells you nothing about hidden moisture in the insulation, or membrane fatigue building under a seam looking fine from six feet away.
Insurance adjusters and warranty reviewers know the difference too. A documented inspection from a trained crew holds up when a claim comes in. A homeowner’s photo from last spring does not.
Early membrane fatigue is invisible to anyone who has not walked hundreds of commercial roofs like our crew has. Skip the ladder and call us instead, before a small gap in a flashing seam becomes a ceiling stain thirty feet away.
DIY Checks vs. Calling a Professional
You can and should do the basic visual checks from safer areas, and if you’re comfortable with it; walk-through yourself between professional visits. Clearing debris, checking for obvious ponding, keeping an eye on the drains, these are good practice and it costs you nothing but time.
A full inspection, the kind that holds up for insurance or warranty purposes, takes a trained eye. Hidden moisture in the insulation doesn’t always show up on the surface. Early membrane fatigue can be invisible to anyone who hasn’t walked hundreds of commercial roofs.That’s why it’s best to let us handle the inspections and make repairs, patches, or replacements when they are needed.
Why This Matters More in New Hampshire
Our winters aren’t gentle on a roof. Ice damming, heavy snow load, freeze-thaw cycles that stress every seam and flashing on the building, the climate in New Hampshire really is a commercial roof’s greatest enemy. Add in the coastal wind exposure some of our clients deal with, and twice-a-year inspections stop being optional.
Let Our Expert NH Roofing Contractors Take a Look
Our team has spent over 20 years working on roofs across New Hampshire and Northern Massachusetts, and commercial buildings get the same attention to detail we’ve built our name on with homeowners. If it’s been a while since your roof had a real inspection, contact us.
Call Conde Roofing & Construction at 603-838-ROOF or reach out through our website for a free consultation. We’ll tell you what’s really going on up there, no upsell, just a straight answer.