Drips Under The Unit In Summer
Inside The Building
Water drips near the supply vents on hot days, even without rain.
On The Roof
The condensate line is clogged or draining onto the roof and finding an open lap at the curb.
Willington, Connecticut
Willington Commercial Roofing Contractor
Curb Flashing And Walkway Pads Around Every Rooftop Unit
As a Willington commercial roofing contractor, we replace and repair roofs on offices and small retail buildings, with curb flashing and condensate routing done around every rooftop unit.
Rooftop Units
Willington Commercial Roofing Around Rooftop Units
Willington commercial roofing on offices and small retail buildings centers on the rooftop units. One or two units on a small roof cut big holes in the membrane, and their curbs are where most leaks start. Technicians walking to those units wear paths into the roof as well.
We check each curb, the condensate lines, and the path technicians take to reach the units. New roofs get raised curbs where needed, tight flashing, and walkway pads from the hatch to each unit. Your HVAC contractor gets the same plan, so units go back on dry, raised curbs.
- Curbs raised and reflashed
- Condensate lines routed to drains
- Walkway pads to each unit
- Offices and small retail roofs
Roof Trouble
Unit Leaks That Bring Commercial Roofing to Willington
Rooftop units cause most leaks on small commercial roofs. Here is how they show up.
Stains At A Curb Corner
Inside The Building
A stain grows at one spot near the unit after rain.
On The Roof
The membrane at the curb corner has split, often where flashing was folded tight.
Leaks Along A Path
Inside The Building
Small stains line up between the roof hatch and the unit.
On The Roof
Service technicians have worn through the membrane walking the same path.
Rust Streaks On The Unit Curb
Inside The Building
Rust-colored water runs down the wall near the unit after rain.
On The Roof
The metal curb under the unit has rusted where water pooled against it.
What The Work Changes
Commercial Roofing Gains for Willington Offices
A roof built around its units stops the leaks that come back every season.
Curbs That Stay Dry
Raised curbs and new flashing tied into the membrane keep water out at the unit base, even in wind-driven rain.
Condensate Off The Membrane
Lines are routed to drains or splash blocks, so summer condensate stops pooling at curbs and finding open laps.
Protected Service Paths
Walkway pads take technician traffic off the membrane from the hatch to each unit, where most wear happens.
Fewer Service Calls
With curbs, lines, and paths fixed, owners stop calling both roofers and HVAC techs about the same roof leak.
Roof Systems
Commercial Roofing Systems for Willington Buildings
Small offices and retail buildings here take one of these systems.
TPO Around Units
Welded white membrane forms tight flashings at curbs, reflects summer heat off the roof, and takes welded repairs if a unit is moved.
TPO Roofing details
EPDM On Small Roofs
Rubber membrane suits small low-slope roofs with few seams and simple details, and flexes where additions meet the main building.
EPDM Roofing details
Metal On Sloped Buildings
Sloped office and retail roofs take new standing seam panels, with curbs framed in where units sit on the roof.
Commercial Metal Roofing details
Industrial Roofs In The Area
Larger buildings with many units get industrial roof systems, planned with the building owner and the HVAC contractor.
Industrial Roofing detailsTwo Ways To Start
Water Under A Rooftop Unit?
Leaking Now
Call and tell us which unit is above the drip. We check the curb and condensate line.
Planning A New Roof
Send the address and the number of units. We plan the curbs before pricing.
Get A Free EstimateWork Order
Commercial Roofing Steps in Willington
Small roofs with units follow this order.
- On The Roof
Inspect Your Roof
We walk the roof, check each curb, condensate line, and service path, and take core cuts near the units.
- At The Building
Coordinate The Units
Unit disconnects and lifts are scheduled with your HVAC contractor before the roofing starts.
- On The Roof
Roof And Raise Curbs
New insulation and membrane go down, curbs are raised where needed, and each one is flashed.
- Final Check
Route Lines And Pad Paths
Condensate lines go to drains, walkway pads go down, and we walk the roof with you.
- Paperwork
Set A Service Schedule
Your HVAC contractor gets notes on keeping condensate lines clear and staying on the roof walkway pads.
Nearby Towns
Towns Neighboring Willington
Is your office building next door to Willington? We also roof these towns; for anywhere else, call us or send us a message.
Stafford Springs
- Old mill buildings with tall parapets
- Masonry coping and through-wall flashing
- Several roof layers on older blocks
Chaplin
- Scuppers and gutters on small roofs
- Bent or loose edge metal
- Ice that backs up at the eaves
Union
- Material delivery on rural roads
- Small shops and service garages
- Staging planned before the crew arrives
Ellington
- Spring checks after a hard winter
- Seams lifted by ice and snow loads
- Drains blocked by debris after storms
Local Questions
Willington Commercial Roofing Questions
What office and small retail owners in Willington ask about leaks at rooftop units, curbs, and service paths.
Why does my roof leak under the AC unit on dry days?
That water is usually condensate. A clogged or misrouted line drains onto the roof and finds an open lap at the curb.
More roofing questionsDo curbs need to be raised during a reroof?
Often. New insulation makes the roof thicker, so curbs are raised to keep the flashing high enough above the membrane.
What are walkway pads on a commercial roof?
Durable pads set on the membrane along service paths. Technicians walk on them instead of the roof, which prevents wear.
Who fixes a leak at a rooftop unit, the roofer or HVAC tech?
Often both. The roofer fixes the curb flashing and the HVAC tech fixes the condensate line, so we coordinate with them.
Can a rooftop unit be replaced at the same time as the roof?
Yes, and it often saves money. The old unit comes off, the curb is replaced or adapted, the roof goes on, and the new unit is set on a dry, flashed curb.
How often should rooftop unit curbs be checked?
At least once a year and after major storms. Curbs move with the unit and their flashing is often the first detail to open.
Do walkway pads need maintenance?
They need little. We check that each pad stays bonded to the membrane and replace any that crack or lift.
Why do curb corners split on small roofs?
Corners are where flashing is folded and stretched the most. Heat, cold, and unit vibration work at those folds until they crack, so new curbs get pre-formed corners.
Free Estimate
Hire a Willington Commercial Roofing Contractor
Send the building address and the number of rooftop units for a roof walk, or call about a leak showing up under one of them.