Ponding Long After Rain
- You See
- Water still standing in the field days later, with a dirt ring when it dries.
- What It Means
- The roof has no slope to the drains in that bay. Tapered insulation and crickets give it one during replacement.
Low-Slope Commercial Roofs
Radcliff Flat Roofing Contractor
Protect Your Building From Ponding, Open Laps, and Clogged Drains
As a Radcliff flat roofing contractor, we replace low-slope roofs with tapered insulation, a cover board, and a single-ply membrane, and rebuild the drains, scuppers, and parapet flashing around them.
- Fixes
- Ponding Between Drains
- Stack
- Insulation, Cover Board, Membrane
- Rebuilds
- Drains, Scuppers, Edge Metal
- Fits
- Retail Strips, Restaurants, Offices
Which Flat Roof System Fits Your Building?
A Radcliff flat roofing contractor picks the membrane by what sits on the roof and what vents onto it. All three suit parapet roofs with interior drains.
Common Choice
TPO
- Best On
- Open retail and office roofs
- Seams
- Hot-air welded
- Surface
- White, reflects sunlight
- Grease Nearby
- Moderate resistance
EPDM
- Best On
- Older flat roofs, cold rooms
- Seams
- Primer and seam tape
- Surface
- Black, or white-on-black
- Grease Nearby
- Swells on contact
PVC
- Best On
- Restaurants and roofs with exhaust
- Seams
- Hot-air welded
- Surface
- White or gray
- Grease Nearby
- Strong resistance
Flat Roof Trouble Spots Around Radcliff
Flat roofs fail where water stalls. These four conditions show up most on parapet roofs over shops and offices.
Clogged Drains and Scuppers
- You See
- Leaves and grit packed around drain grates and scupper openings.
- What It Means
- Water backs up against seams and over flashing. Clearing them is upkeep; undersized scuppers get rebuilt larger.
Shrunk Membrane at Parapets
- You See
- Flashing pulled tight off the wall, bridging the corner where roof meets parapet.
- What It Means
- An aging sheet shrinks and pulls the flashing loose. The fix is new flashing run up the wall under the coping.
Soft Spots Underfoot
- You See
- The membrane gives under your boots near drains or along a seam line.
- What It Means
- Wet insulation sits below. Core cuts show how far it runs, which decides between recover and tear-off.
Commercial Flat Roofing Options for Radcliff
Every option below starts with dry insulation sloped to the drains, then changes what goes on top.
Tapered Insulation for a Flat Roof
Insulation boards cut to slope carry water to each drain and scupper, with crickets behind curbs and sumps at the drain bowls.
Flat Roof Replacement for a Retail Strip
Tenant spaces stay open while tear-off runs in sections, with entrances taped off under the work edge and intakes covered.
PVC Roof for Restaurants
Kitchen exhaust drops grease on the roof. PVC resists animal fats, and grease boxes catch the drip at each fan.
Recover Over One Dry Roof
With one dry existing roof and a solid deck, a cover board and new membrane go over it, and edge metal rises to match.
Benefits of a New Flat Roof
The left column is a tired flat roof. The right column is the same roof after replacement.
Before The New Roof
- Water standing in the same bays all season
- Scuppers too small for the roof area behind them
- Flashing bridging the parapet corner
- Wet insulation spreading from old leaks
After The New Roof
- Slope built into the insulation toward every drain
- Scuppers and conductor heads sized to the roof
- Flashing run up the wall and finished under coping
- Dry boards and a cover board under the sheet
Water Still Standing After the Rain Stops?
Ponding pushes water against every seam in that bay. A walk with core cuts shows whether slope can be added during a recover or needs a tear-off.
- Ponding Bays Marked
- Drains and Scuppers Checked
- Insulation Tested
Work Order From Your Radcliff Flat Roofing Contractor
Flat roof ponding repair and full replacement both run in this order, with each day's section dried in before the crew leaves.
Inspect Your Roof
We mark ponding bays, check every drain and scupper, pull at parapet flashing, and take core cuts where the membrane feels soft.
Plan Slope and Drainage
Tapered insulation, crickets, sumps, and any overflow scuppers get laid out so water has a path off every bay.
Tear Off in Sections
Old roofing comes off only as far as the crew can dry in, and a sealed tie-in joins new roof to old each evening.
Install and Flash
Insulation, cover board, and membrane go down, then flashing at curbs and parapets, new drain rings, and edge metal finish it.
Systems Often Paired With Flat Roof Work
The membrane on top of a flat roof has its own page, and so does fixing a single leak.
TPO Roofing
Welded white sheets are the usual top layer on open retail and office roofs around Radcliff.
EPDM Roofing
Rubber sheets suit older flat roofs and cold rooms, joined with seam tape rather than heat.
Metal Roofing
Retrofit framing can turn a flat roof with chronic ponding into a sloped metal roof.
Flat Roofing Questions for Radcliff Buildings
Answers on ponding, drains, recovers, and keeping tenants open.
Ponding
How do you fix ponding on a flat roof?
Slope gets built into the roof. During a recover or tear-off, tapered insulation carries water toward the drains, crickets push it around curbs, and sumps drop it into each drain bowl. Clearing a clogged drain fixes ponding caused by debris, but a sagging steel deck between bays needs new slope in the insulation above it.
Are scuppers and downspouts part of a flat roof job?
They are. New insulation raises the roof, so scuppers get raised and relined, conductor heads and downspouts are checked for size, and overflow scuppers or secondary drains go through the parapet where a bay has only one way out. Interior drain piping changes bring in plumbing review.
Recover
Can a new flat roof go over the old one?
Over one dry existing roof with a solid deck, yes. Core cuts or a moisture scan find wet insulation, which gets cut out first. A cover board goes over the old surface, loose flashing comes off, and edge metal and scuppers rise to the new height. Two existing roofs or rusted deck mean a tear-off.
Tenants
Can a retail strip stay open during a flat roof replacement?
Most stay open. Tear-off runs in sections dried in each day, entrances under the work edge get taped off, and air intakes near adhesive or tear-off get covered. Low-odor adhesives or mechanically attached systems suit occupied stores, offices, and clinics because they cut the fumes drawn into rooftop units.
Restaurants
Why do restaurant roofs often get PVC?
Kitchen exhaust fans drop oils and animal fats on the roof, and some membranes break down under them. PVC holds up well to grease, TPO handles moderate exposure, and EPDM swells on contact. Grease containment boxes at each fan and a sacrificial sheet under the drip keep the field membrane clean.
Reach a Radcliff Flat Roofing Contractor
Send us where the water stands and where it shows inside. We will walk the roof, test the insulation, and plan the slope.