
Flat Roof Repair
Base flashing, seam, and drain repairs on the flat roofs that sit behind brick parapet walls.
See flat roof repair
As a Plattsmouth commercial roof repair contractor, we fix the leaks where flat roofs meet brick parapet walls, from open coping joints to cracked base flashing.
Plattsmouth commercial roof repair on brick buildings centers on the wall line. Coping caps open at their joints, counterflashing pulls out of the mortar, and membrane cracks where it turns up the wall.
Water that gets behind the wall flashing runs down inside the parapet and shows up as stains along exterior walls, often far from the opening.

Wall-line leaks leave their own marks inside.
Damp plaster or paint peeling high on an outside wall points to water getting in at the parapet above.
Metal or stone coping opens at its joints as it expands and shrinks. We reseal the joints or replace the coping with new metal.
White salt deposits on interior brick mean water is moving through the wall and leaving minerals behind.
Counterflashing set into mortar joints pulls free as mortar wears. We reset it into a fresh reglet and seal the top edge.
Moisture showing along the ceiling edge comes from the base flashing where the roof turns up the parapet.
Membrane at the wall base cracks from movement and sun. New base flashing goes in and ties into the existing roof membrane.
Runoff pouring down the face of the building during storms means the scupper or its downspout head is blocked or loose.
Debris and failed sealant at the scupper box back water up against the parapet. We clear the box, reseal it, and reconnect the downspout head.
Older brick buildings carry a lot of wall line for their roof size, so wall repairs protect a lot.
Sealed coping and counterflashing keep water out of the wall cavity and off upper-floor ceilings.
Stopping water at the parapet slows mortar wear and the freeze damage it brings. Masonry repairs stay smaller as a result.
Many wall-line leaks need no work on the main roof membrane, which keeps the scope small.
Wall repairs happen from the roof, so shops and offices below keep their normal hours. Hoists go up at the back of the building.
Wall-line work often pairs with one of these services.

Base flashing, seam, and drain repairs on the flat roofs that sit behind brick parapet walls.
See flat roof repair
Metal coping caps, wall panels, and through-wall scupper boxes refastened, resealed, or replaced in matching metal.
See commercial metal roof repair
Wall-line leaks traced from interior stains to the coping joint or flashing that lets water in.
See commercial roof leak repair
Repairs on larger plant and warehouse roofs in and around Plattsmouth, from curbs to drains.
See industrial roof repair
That pattern points to the parapet. Request an estimate and describe which wall shows the stain and after what kind of rain.
Parapet repairs follow the same four decisions.
Coping joints, counterflashing, and base flashing get checked along every wall, and scuppers through the parapet get cleared and tested.
Open joints and loose flashing mean repair. Coping rusted through or brick that has lost its mortar needs a mason's look first.
New metal coping, reglet-set counterflashing, and membrane base flashing each match the wall and the roof they connect.
Ladders and hoists for the roof go up at the back of the building, away from storefront doors and sidewalk traffic.
Building outside Plattsmouth? These towns are covered too, and for any other address, call us or send us a message.
What owners of Plattsmouth brick buildings ask.
Brick parapet buildings leak most where the roof meets the wall. Coping caps open at the joints, counterflashing pulls away from the mortar, and membrane cracks at the wall base. Repairs reseal or replace coping, set new counterflashing, and add base flashing tied into the existing roof.
Wall and roof repairs happen from above, with hoists set at the back of the building. Shops and offices keep their hours, and interior work only happens where a stain needs drying or a ceiling tile needs swapping after the roof is sealed.
Call (531) 307-8230 or request an estimate with the building address. A roof walk follows, with photos of each wall and roof area, and the repair scope lists the coping, flashing, and membrane work by location.
Yes. We serve Plattsmouth from Bellevue, about 11 miles north, and handle parapet, flat roof, metal roof, and leak repairs on commercial buildings across town.
Water behind the wall flashing soaks brick and mortar from the inside. In winter that water freezes and pushes mortar out, and in summer it leaves white salt on interior brick. Sealing the parapet early limits the masonry work later.
New coping fastens to a wood nailer or cleat set on top of the wall. If the top course of brick is loose, a mason resets it first, then the nailer and coping go on with sealed joints and a slope that sheds water to the roof side.
Leaks behind the flashing run down inside the wall cavity and along mortar joints before they find a way out. The stain can sit a floor below or several feet to the side, so wall-line testing starts at the coping and works down.
Tell us which walls show stains. We check the parapets and the roof and price the repairs wall by wall.