Flashing at Walls, Curbs and Penetrations
Base flashing at a wall or curb holds the roof to a vertical surface, and it sees more movement than the field membrane does. It splits at the fold, pulls off the substrate, or loses the termination bar fastening that holds its top edge. When the top edge lets go, water runs behind the flashing and down the inside face of the wall, and the stain shows up far from the failure. We rebuild those details with the counterflashing set into a reglet, new termination bar, and a sealant joint tooled so water sheds off it.
Pipes, conduit supports and small curbs get a formed boot or a fabricated flashing sized to the penetration, not a bead of sealant packed around the base. Where the existing flashing can be saved, we reseat and reseal it. Where it cannot, a proper flashing failure repair replaces the whole detail so the owner is not repairing the same corner every spring.
Edge Metal and Coping Joints
The sheet metal at the roof edge works hard in Pasadena's climate, whether the building is a flex unit on Foothill Boulevard or one of the brick-faced storefronts of Old Pasadena. It heats in the afternoon, expands, and pulls back overnight, and across a long run the coping joints open a little further each season. Fasteners back out, cleats loosen, and the joint admits water behind the cap. We replace failed splice plates and cleats, reform copings with proper laps and hems, and where the metal requires it we solder the seams instead of relying on sealant alone.
Sealant is a finishing step, not a structure. A sealant joint tooled into a well-lapped seam can last, while the same bead smeared over an open joint fails within a year. For fascia, gutters and scuppers that need more than a patch, edge metal and coping fabrication and replacement keeps the repair and the metal with one crew working to the same standard.
Grease, Foot Traffic and Rooftop Equipment
Some repairs come from how a roof is used. Restaurants in the Playhouse District, where Playhouse Village has more than 45 restaurants, bars and cafes, vent kitchen exhaust onto the roofs around them, and grease softens many membranes and weakens their seams. Where that is the pattern, we repair with details suited to it, and a KEE roof system is a membrane worth discussing when the roof is eventually replaced.
Service technicians are the other source of damage. Rooftop units draw people across the membrane with tools, filters and ladders, and a dropped screwdriver or a dragged panel is enough to cut the sheet. We add walkway protection where the traffic is, repair the punctures with a proper membrane puncture repair, and talk to the property manager about keeping mechanical contractors off unprotected sheet.
Repair Scope Versus Replacement
Every repair proposal we write states what is being fixed, where, with which materials, and what is left alone. We photograph the roof before and after, mark each repair on a roof plan, and give the owner a record that can be passed to a successor or an insurer. Where a repair is only a stopgap, we say so and explain what the next step would be, so the owner can plan for it instead of being surprised by it.
Repairs hold best when they are part of a routine. A roof walked twice a year, with drains cleaned and small defects fixed while they are small, rarely arrives at an emergency. Preventive roof maintenance follows the same detail standard as a repair, and when active water is already getting in, leak repair comes first and the planned repair follows.
Commercial Roofing Questions
How do I know whether my roof needs repair or replacement?
Look at how far the damage has spread. If the leaks and open seams are local and the insulation is dry, repair is usually the sound choice. If the membrane has aged through, if repairs keep failing beside earlier ones, or if the insulation is wet over a wide area, replacement is the better purchase. We put both numbers side by side so you can see the difference.
How long does a membrane repair last?
A repair on a sound membrane, with a prepared surface and a proper weld or bond, can last as long as the roof does. A repair on aged sheet, or one made over wet insulation, has a shorter life. We tell you which situation you are in before the work begins.
Can repairs be done in cold or wet weather?
Not on a wet surface. Adhesives and welds need a clean, dry membrane, so we do not make permanent repairs on a wet roof. Pasadena gets most of its roughly 20.4 inches of rain in a short winter season, so in that season we make temporary dry-in repairs when we must and schedule the permanent detail work for the next dry window.
Will repairs affect an existing manufacturer relationship or coverage?
That turns on the system maker's requirements and the terms of any coverage in place. Some require repairs by an approved method or a particular material. Before work begins, ask us to read the requirements with you, and we will follow the system maker's repair procedures and keep a photographed record of what was done.
How quickly can planned repairs be scheduled?
Small repairs on an open roof can often be scheduled promptly, while work on occupied buildings, roofs near sensitive equipment or large multi-detail scopes takes more coordination. If water is entering now, we treat that as a leak response and not a scheduled repair, and we start with stopping the leak.
