Commercial Roofing in Hanover, MA
Retail roofs rarely fail where the tenant thinks. A restaurant owner sees a stain over the dining room and blames the membrane. The real leak is the exhaust curb six feet away, or the drain behind the unit. Hanover, MA concentrates its business in the northeast section along Route 53, with shops, restaurants, grocery stores and outlets. Those roofs carry equipment and traffic. We start with the equipment.
Sort the roofs by tenant use
Hanover Crossing, Merchants Row and other shops sit near the intersection of Routes 3 and 53. A roughly three-mile stretch of Route 3, a four-lane freeway, runs through town with an exit at Route 53. Shops, restaurants and grocery stores each ask something different of a roof.
A restaurant roof carries kitchen exhaust, grease, and makeup air. A grocery roof carries refrigeration condensers and heavy electrical service. A shop roof carries heating and cooling units that change with every tenant. We do not assume what any one building has. We map every unit and penetration on the first walk, then rank the risks by what sits below. Product, food and electrical gear get the first protection. The map also becomes the owner's record, so the next tenant improvement starts with a drawing of what is already up there.
Stop the curb leak before you chase the membrane
Rooftop equipment leaks at the curb. The flashing around a unit cracks, a fastener backs out or a service panel is left unsealed. Water gets under the curb cap and runs along the deck. The stain appears at the register or the light fixture, nowhere near the unit.
Exhaust fans add grease. Grease softens some membranes and clogs drains. A restaurant roof needs grease containment under the fans and a membrane that tolerates what escapes. A PVC roof resists grease better than most other single-ply sheets, which matters for kitchen exhaust. Ignoring the grease shortens the life of any sheet.
Nearby Brockton, MA gets about 34 inches of snow a year, with a low on record of -19 degrees. Freeze-thaw cracks sealant around every curb on a retail roof, so a fall walk catches cracked seals before the first storm.
Check each curb, drain and seam on the walk
Retail roofs get a first walk that follows the equipment. We start at the access point, follow the service path and stop at every unit.
- Curb flashing, cap seals and fastener heads on every rooftop unit.
- Exhaust fans with grease buildup, cracked bases or loose hoods.
- Drains and scuppers, flushed to see if water leaves.
- Membrane along service paths for scuffs, cuts and thin spots.
- Abandoned curbs and pipes from earlier tenants, still open or poorly capped.
Tenant turnover leaves a trail of penetrations. An old pipe cut off at the deck and capped with sealant will leak in a few years. We list each one and price the fix. When a curb is past saving, a rebuilt equipment curb and support goes in with new flashing tied into the membrane.
Repair the details, replace the sheet only when it earns it
A strip of shops with an aging membrane often needs repairs at the curbs, not a new roof. Reseal the curbs, replace the worn boots, clear the drains and weld the lifted seams. Then monitor. Replacement makes sense when a core cut shows wet insulation across a large area, or when repair patches outnumber sound seams.
Big retail roofs reward a plan. A replacement can be phased by zone while stores stay open. A coating restoration can extend a sound roof's life when the layers are dry. The owner chooses with numbers: what each option costs, what it covers and how long it should hold under traffic and weather.
Work around customers and deliveries
A shopping area lives on customer flow. A lift in the wrong place blocks parking, and a hoist over the entrance stops foot traffic. We pick the lift position with the property manager, rope off the work area and run noisy work before opening or after closing. Deliveries to grocery and restaurant tenants stay clear.
Grocery and food tenants need extra care. A roof opening over a sales floor or a kitchen means covers, vacuums and an agreed plan with the store manager. Refrigeration units may not stop, so we plan around them. When a store has to close a zone, we tell the manager the hours in advance. The Route 1 strip malls in Norwood and Union Street in Rockland raise similar access questions.
Count the cost of a slow leak
A slow curb leak does quiet damage. The insulation under the unit wets first, then the deck. The unit itself can sit on a wet base for a season. By the time a ceiling tile drops, the wet zone may be far bigger than the hole. Insulation that holds water loses its value and adds weight, and the cure is cutting it out.
Retail adds its own costs: stock that gets wet, a closed aisle, a tenant who withholds rent until the roof is fixed. Cost drivers on the repair side are simple. Roof size, access, number of details and the amount of wet insulation set the price. Fix the details early and the wet insulation stays small.
Schedule matters as much as price. Retail work stays out of the weeks before major shopping seasons, so we book repairs for the slower stretches and keep a temporary dry-in ready if a leak shows up in a busy week. A tarp over a curb is a fair stopgap for days. It is not a repair, and we price the permanent fix alongside it.
Plan for snow load, wind and the 2024 code
Snow drifts bury rooftop units and pile against parapets. Meltwater runs back to drains that may have frozen. Brockton winds average 14.3 mph. Nor'easters can reach hurricane force, so edge metal, unit bases and fan hoods have to be tight. A roof that survives January has clear drains and sealed curbs in November.
Two code layers matter on a retail replacement. The Massachusetts building code, 780 CMR 10th edition, follows the 2021 IBC and has governed alone since June 30, 2025, after starting October 11, 2024. The state energy code takes the 2021 IECC as its base. Hanover reviews insulation and attachment under both.
Commercial Roofing Questions
Why does my restaurant roof leak near the exhaust fan?
Usually at the fan base, the curb flashing or a clogged drain beside it. Grease also degrades some sealants. We test the base with water, replace the failed seal and add grease containment if the fan lacks it.
Can a grocery roof be worked on during business hours?
With a plan. We open small zones, protect the sales floor and keep refrigeration running. High-risk work waits for off hours. The store manager approves the sequence.
What do I do about old rooftop units left by a prior tenant?
Remove them and cap the curb properly, or keep them in service if they work. Abandoned curbs with failed seals are leak points. We list each one and price the cap or the removal.
Is a coating a good fix for a retail roof?
For a dry, sound roof, yes. It seals the surface and extends service life. A coating does not dry wet insulation or fix open seams, so we test and repair first.
How long does a phased replacement take?
The schedule follows roof size, weather and store hours. We give a day-by-day plan after the walk, with each zone closed in at the end of the shift.