Roof Leak at a Rooftop Unit Curb
- You See
- Stains under the HVAC unit and old caulk cracked at the curb corners.
- What It Means
- Curb flashing has pulled loose or was never run up the face. New flashing with formed corners replaces the caulk.
Leaks and Local Damage
Radcliff Commercial Roof Repair Contractor
Seal Open Seams, Loose Flashing, and Backed-Out Screws Before Leaks Spread
As a Radcliff commercial roof repair contractor, we trace leaks to the seam, drain, curb, or panel lap letting water in, then repair it with materials matched to your roof.
- Starts With
- Tracing the Leak
- Systems
- TPO, EPDM, PVC, Metal
- Checks
- Core Cuts for Wet Insulation
- Repairs
- Matched to the Existing Roof
Repair the Roof or Plan a New One?
A Radcliff commercial roof repair contractor answers this before any patch goes on. Repair or replace a leaking flat roof comes down to how much insulation is wet.
What We Do
Repair
- Leak Pattern
- One or two spots at a drain, curb, or seam
- Insulation
- Dry around the leak
- Deck
- Solid at the repair
- Existing Layers
- Any
Recover
- Leak Pattern
- Spread across the field, roof still dry below
- Insulation
- Mostly dry; wet boards cut out
- Deck
- Holds fasteners
- Existing Layers
- One roof only
Replace
- Leak Pattern
- Many spots, patches on patches
- Insulation
- Wet across large sections
- Deck
- Rusted or sagging from inside
- Existing Layers
- Two roofs, or wet insulation
Leaks We Trace on Radcliff Commercial Roofs
Water shows inside far from where it gets in. These six spots account for most of the leaks found on the roof above a ceiling stain.
Drain Ring Leaks
- You See
- Water in the ceiling right below a roof drain after heavy rain.
- What It Means
- Flat roof drain leak repair means resetting the membrane under the clamping ring over fresh mastic, then checking the bowl.
Open Single-Ply Laps
- You See
- Lap edges lifting on TPO or EPDM, often near walkway routes.
- What It Means
- TPO laps get cleaned and rewelded with a patch; EPDM laps get primed and closed with seam tape.
Loose Metal Roof Screws
- You See
- Rust trails below screw heads and drips along the purlin lines.
- What It Means
- Metal roof screw and lap repair in Radcliff, KY uses oversized screws with new washers and fresh butyl at the laps.
Coping and Wall Flashing
- You See
- Water in the top of an exterior wall or a stain along the parapet side.
- What It Means
- Coping caps lift and wall flashing slides. Both get refastened and sealed where the membrane turns up the wall.
Punctures and Tears
- You See
- Small holes near ladders, hatches, and the units service crews visit.
- What It Means
- Matching membrane patches close the holes, and a walkway pad stops the next one on that route.
Commercial Roof Repair Options for Radcliff
Each repair matches the material already on the roof, so the patch moves and ages the way the field does.
Single-Ply Seam Repairs
Welded TPO and PVC patches, taped EPDM laps, and new T-joint covers on seams that have lifted or split.
Curb and Penetration Flashing
Rooftop unit curbs, pipe boots, and skylight frames flashed with pre-formed pieces and stainless clamps.
Metal Panel Repairs
Backed-out screws replaced, end laps reset with butyl tape, closures renewed, and holed panels swapped for matching profiles.
Drain, Scupper, and Edge Repairs
Drain rings reset, scuppers relined, and loose edge metal or coping refastened so wind cannot peel the roof back.
Benefits of Repairing Your Roof Now
Water that gets past a seam soaks the insulation under it. The left column is a roof left alone; the right is the same roof after the repair.
Before The New Roof
- A stain that grows each storm
- Wet insulation spreading from one leak
- Caulk reapplied every season at the same curb
- Rust trails widening below loose screws
After The New Roof
- The leak traced and closed at its source
- Wet boards cut out before they spread
- Curb flashing run up the face and capped
- Oversized screws with new washers in firm steel
Water Dripping Near a Roof Drain?
Call with the room and the spot where water shows. We will find the drain, curb, or seam above it and tell you what the repair takes.
- Leak Traced on the Roof
- Insulation Checked Nearby
- Matched Repair Materials
Steps Your Radcliff Commercial Roof Repair Contractor Follows
Repairs start inside, where the water shows, and finish on the roof with a check of the repaired detail.
Inspect Your Roof
We mark the stain inside, then walk the roof above it, checking drains, curbs, laps, and flashing until the entry point turns up.
Check the Insulation
Core cuts around the leak show whether the boards are wet. Wet boards come out and get replaced before the membrane closes over them.
Repair With Matching Material
Welded patches on TPO, taped laps on EPDM, butyl and new screws on metal: the repair matches the roof that is already there.
Walk the Repaired Area
Seams are probed, flashing is checked, and you get a short list of other spots worth watching on that roof.
When a Repair Turns Into a New Roof
Core cuts sometimes show wet insulation across too much of the roof for patches to hold. These are the systems that replace it.
Flat Roofing
Parapet roofs with ponding history get new tapered insulation, a cover board, and a single-ply membrane.
TPO Roofing
Welded white sheets replace failing laps on warehouses, offices, and retail strips.
Metal Roofing
Rusted-through runs on shops and barns get new standing seam or R-panel.
Affordable Commercial Roof Repair in Radcliff
Straight answers on leaks, insulation, and when a repair is the right call.
Leaks
Why does the stain inside sit away from the leak on the roof?
Water that gets past a seam or curb runs along the deck, the insulation joints, or a purlin before it finds a way down.
A stain under the office can start at a rooftop unit several bays over. That is why tracing starts inside and then follows the roof above it, rather than patching straight over the stain.
Can a leak at a rooftop unit curb be fixed without replacing the roof?
Most curb leaks can. Old caulk comes off, the curb flashing is rebuilt with pre-formed corners and run up the face, and the counterflashing gets sealed. If core cuts show wet insulation spreading far from the curb, the repair still closes the leak, but the wet boards around it get replaced too.
Repair or Replace
How do you decide between repair and replacement?
By how much insulation is wet and how many spots leak. One or two leaks at drains, curbs, or seams over dry insulation are repairs.
Soft areas across large sections, membrane shrinking off the parapets, rust holes in the deck, or patches stacked on patches point to recover or tear-off. Core cuts and a moisture scan settle it.
Metal Roofs
What does metal roof screw and lap repair involve?
Elongated holes get oversized screws with new washers, or stitch screws into firm steel. Cracked end laps are opened, cleaned, and reset with fresh butyl tape. Crumbled ridge closures get replaced, and flashing pulled loose at walls and curbs is reformed. Long warehouse runs get checked first at the eave and ridge ends.
Cost
What changes the cost of a commercial roof repair?
How far the water has traveled, how much wet insulation has to come out, the roof system, and access. A single drain ring reset costs far less than a curb rebuild with wet boards replaced around it.
A free estimate starts with the roof walk, so the price reflects the actual repair rather than a guess from the ground.
Call a Radcliff Commercial Roof Repair Contractor
Tell us where water shows inside and what roof system sits above it. We will trace the leak and repair it to match.