Meltwater Over Curb Flashing
- You See
- Drips near rooftop units that start during a thaw and stop when it freezes again.
- What It Means
- Ice dams around curbs lift meltwater above the flashing height. Taller or resealed flashing closes the path.

As a La Porte commercial roof repair contractor, we repair plant roofs where meltwater from lake-effect snow finds curbs, drains, and seams.
La Porte commercial roof repair often starts in spring, when the season’s snow has melted and the stains show up inside.
Lake-effect snow off Lake Michigan piles up on plant roofs, then melts in cycles. Meltwater collects behind ice at drains and around curbs, where it rises over flashing that rain never reaches.
Manufacturing roofs carry rooftop units, exhaust stacks, and long seam runs, so each spring check starts with those details.

Plant roofs here show the same winter damage each spring. These cards name the cause and the repair.

Spring repairs on a plant roof protect equipment and inventory through the next winter.
Most plant roofs here need targeted work after winter. These cards show where to begin.
Meltwater is rising over curb or drain flashing behind ice.
The flashing boot at the stack has cracked from heat.
A low spot around the drain is holding water that freezes.
Years of melt leaks have soaked large areas under the membrane.
Mark where water shows inside and which curbs or drains sit above it. We will check those details first on the roof walk.
Get A Free EstimatePlant roofs get safety planning before the roof walk and repair.
Fall protection, access points, and any hot-work limits are agreed with the plant before the roof walk.
Those details get inspected first because winter meltwater finds them before anything else on the roof.
Small cores near each stain show whether insulation took on water during the winter, and how far it spread.
Noisy and odor-producing work is timed for shift changes or planned downtime agreed with the plant.
Photos and notes for each repaired detail go to maintenance, along with a list of items to watch before next winter.
Along with La Porte, we repair roofs in South Bend and four other towns. Somewhere else? call us or send us a message.

Our home base for flat, metal, and plant roof repairs.
Retail and office roofs repaired around open stores and tenants.
Metal storage, shop, and farm buildings with fastener leaks.
TPO, EPDM, and built-up patches matched to the membrane.
Storm checks, temporary patches, and documented roof damage.
Answers for plant managers and building owners in La Porte.
Yes, La Porte is in our area. Plant roofs there tend to leak at rooftop units, exhaust stacks, drains, and seams, and meltwater from lake-effect snow adds stress at each one.
The leak is traced, wet material is cut out, and matching materials go in around the production schedule.
Flat membrane roofs, metal roofs, and plant roofs all get repaired, from a single curb flashing to a run of seams.
Offices and shops get the same leak tracing and moisture checks as plants, scaled to the size of the roof.
It is. La Porte is a regular part of our area around South Bend. Call with the address to set a roof walk.
For a plant, have the safety contact ready so access can be agreed on the first call.
Ask how the contractor finds the leak source, whether insulation gets tested before patching, and whether you get photos of each repair.
Those three answers show whether the repair will hold through the next winter or just cover the stain.
Only from the work area, and only by a roofing crew. Shovels and picks used by others often cut the membrane they are trying to protect.
Drains get opened first so meltwater has somewhere to go, then the repair area is cleared down to the roof surface.
Spring and fall. Spring finds winter damage before summer storms, and fall seals details before snow returns.
Active leaks get a temporary patch any time of year, with the permanent repair set for the next workable dry day.

Send the plant address and where water shows inside. We will plan the roof walk with your safety staff and price the repair in writing.