Hot summers and cold winters in Delaware County punish low-slope roofs. Ponding after a storm, ice at drains, and UV on black membranes all show up on additions and commercial wings in Newtown Square, Edgemont, and Gradyville. We install and replace TPO, EPDM, and modified bitumen so water actually leaves the deck instead of sitting against flashings. Older suburban stock here often has mixed slopes where a garage or porch was added; those transitions leak first. Work is scheduled from our shop at 3475 West Chester Pike, with hours Monday–Friday 8am–6pm and Saturday 9am–2pm.
Wind off the ridges near Tyler Arboretum and freeze-thaw cycles mean edge metal and termination bars matter as much as the field membrane. A flat roof that looks fine from the street can have wet insulation under a single-ply sheet after years of summer heat. We open suspect areas, check deck condition, and match the system to how the building is used—quiet residential additions versus busy roofs at Newtown Square Corporate Campus. Nearby Media, Broomall, and Wayne share similar housing ages, so the same detailing applies. Upfront quotes, work you can inspect on the roof, no invented warranties.
Code in this part of Delaware County still expects proper slope to drains, overflow scuppers, and fire-rated assemblies on attached structures. We do not claim licenses or awards we were not given; we show you the deck, the insulation, and the membrane before it is covered. If the existing roof is a gravel BUR or a failing rubber sheet, we talk through tear-off versus recover only when the deck and wet layers allow it. Terrain is not extreme, but tree litter from mature lots clogs drains fast—something we plan for on every job.
Technician insight
In Newtown Square the thing that catches people out with flat roofs is ponding on additions that were framed almost dead-level in the 70s and 80s. Summer storms dump water that sits until freeze-thaw opens the seams. I always check the low spots near the house wall first—that is where wet insulation hides under a membrane that still looks intact from the yard.
Ponding addition roof near Edgemont
A homeowner had water staining the ceiling of a rear addition after every heavy rain. We found the rubber membrane still intact but insulation soaked at a low point with no cricket to the drain. We tore off the wet area, added tapered insulation to the drain, and installed a new TPO field with proper wall flashing. The ceiling stayed dry through the next freeze-thaw stretch.
Flat Roofing Companies Services We Offer
✓Tpo Flat Roof Installation
White TPO membranes that reflect summer heat on low-slope additions and commercial sections in Newtown Square and Edgemont.
✓Epdm Rubber Roof Replacement
Black EPDM sheets for simpler residential flat roofs where cost and proven seams matter more than color.
✓Modified Bitumen Overlay
Torch or cold-applied modified bitumen when an existing BUR needs a durable cap without a full structural rebuild.
✓Commercial Flat Roof Recover
Recover systems for offices and warehouses around Newtown Square Corporate Campus when the deck is sound.
✓Flat Roof Drain and Scupper Work
New drains, overflow scuppers, and cricket work so ponding does not sit through Delaware County winters.
✓Parapet and Edge Metal Flashing
Termination bars, copings, and drip edges that keep wind-driven rain out of walls on mixed-slope homes.
Flat Roofing Companies Cost in Newtown Square, PA
| Service | Typical Range | What Affects It |
|---|---|---|
| Small residential flat section (under 500 sq ft) | $4,500–$9,000 | Access, tear-off layers, and drain count move the range. |
| Typical home addition or garage flat roof | $8,000–$18,000 | Insulation thickness and TPO vs EPDM change cost. |
| Commercial recover (sound deck) | $7–$14 per sq ft | Height, parapets, and HVAC curbs add labor. |
| Full tear-off and new single-ply | $10–$18 per sq ft | Wet deck repair and extra insulation raise the high end. |
| Drain or scupper replacement (each) | $400–$1,200 | Interior plumbing tie-in vs through-wall overflow. |
Ranges are typical for Newtown Square, PA and confirmed with an exact written quote before any work starts.
How it works
- 1
Roof Walk And Moisture Check
We inspect the field, flashings, and drains, and look for wet insulation before recommending tear-off or recover.
- 2
Written Scope And Quote
You get a clear list of membrane type, insulation, edge metal, and drain work—no surprise extras after we start.
- 3
Tear-Off Or Prep
Old layers come off or are prepared only if the deck is dry and structurally sound for the new system.
- 4
Install Membrane And Flashings
Sheets are welded or adhered, edges terminated, and drains tied in so water leaves the roof.
- 5
Final Walk-Through
We walk the finished roof with you during business hours so you can see seams, copings, and drainage.
Pricing
Pricing follows square footage, membrane type, wet insulation, and how much edge metal and drain work the roof needs—not a one-price flyer.