Multiple Systems Available
TPO, EPDM, modified bitumen and PVC — we install the right membrane for how your building is used, not a one-size-fits-all roof.
Lowcountry Flat Roofing
Commercial & Residential Flat Roofing Solutions
Watertight TPO, EPDM and modified bitumen systems for storefronts, additions and low-slope residential roofs across the South Carolina Lowcountry — engineered to drain, seal and stand up to coastal storms.
What we do
Flat Roof Services
Flat and low-slope roofs need a completely different approach than a pitched shingle or metal roof, and we install the full range of commercial-grade membrane systems. TPO (thermoplastic polyolefin) is our most popular choice — a bright white, heat-welded membrane that reflects the Lowcountry sun and keeps cooling costs down. EPDM is a tough synthetic-rubber membrane prized for its 25–30 year durability, modified bitumen delivers traditional multi-ply protection that holds up to foot traffic, and PVC is the chemical-resistant pick for restaurants and industrial buildings.
We work on every kind of low-slope structure: commercial buildings and storefronts, carports, porches, room additions, and the flat sections that tie into an otherwise pitched residential roof. Whether it is a single ponding section that needs a fix or a full commercial tear-off and replacement, we match the membrane and assembly to how the building is used — and to the humidity, heavy summer downpours and hurricane exposure that define roofing on the coast.
The thing that makes or breaks a flat roof is water management. Standing ("ponding") water and constant UV are what age these systems prematurely, so every project starts with proper slope: tapered insulation to move water toward drains and scuppers, reinforced and heat-welded seams that will not wick moisture, and UV-stable membranes with sealed flashing at every penetration. Done right, a flat roof sheds water as reliably as any pitched roof on the island.
Why choose us
Why Property Owners Choose JJ Roofing
Proper Drainage Design
Tapered insulation and correct slope move water to drains and scuppers, preventing the ponding that ruins flat roofs early.
Commercial & Residential
From Lowcountry storefronts and warehouses to home additions, carports and porches — we cover every low-slope project.
Storm-Ready Installations
Heat-welded seams, sealed flashing and UV-stable membranes built to ride out coastal heat, heavy rain and hurricane season after season.
How it works
Our Process — How It Works
- 01
Free Flat Roof Inspection
We assess the membrane, drainage, seams and any ponding or leaks, then provide a clear, fixed written estimate — no obligation.
- 02
System Recommendation
We recommend the right system for your building — TPO for energy efficiency, EPDM for durability, or modified bitumen for multi-ply protection.
- 03
Surface Preparation & Installation
Tear-off or prep of the existing surface, tapered insulation and slope correction, then a precise membrane install by our own crew.
- 04
Drainage & Seam Verification
Every seam is heat-welded or reinforced and water-tested, and drains and scuppers are checked to confirm the roof sheds water cleanly.
- 05
Final Walkthrough & Warranty Documentation
A complete walkthrough and a full cleanup, then your manufacturer and workmanship warranties delivered in writing.
Recent work
Flat & Low-Slope Projects
A selection of low-slope, commercial and restoration roofing work across the Lowcountry, from Bluffton to Savannah.
View All Flat Roofing Projects Where we work
Flat Roofing across the Lowcountry
We provide flat roofing for homeowners and businesses throughout the South Carolina & Georgia Lowcountry — serving Beaufort, Bluffton, Hilton Head, Ridgeland, Hardeeville and Savannah, and the surrounding plantation communities.
- Beaufort
- Bluffton
- Hilton Head
- Ridgeland
- Hardeeville
- Savannah
Good to know
Frequently Asked Questions
What flat roof system is best for my building?
It depends on how the building is used. TPO is the go-to for energy efficiency and a reflective white surface, EPDM for long-term durability, and modified bitumen for multi-layer protection on roofs that see foot traffic. We recommend the right system after inspecting your roof.
How long does a flat roof last?
With proper installation and maintenance, TPO lasts roughly 20–30 years, EPDM 25–30 years, and modified bitumen 20+ years. Drainage and seam quality have the biggest impact on how long any flat roof lasts.
Do flat roofs have drainage problems?
Only when they are installed incorrectly. Ponding water comes from poor slope, not from flat roofs themselves. We design proper slope with tapered insulation and place drains and scuppers so water sheds instead of pooling.
Can you repair my existing flat roof?
Yes. We inspect the membrane, seams and drainage and tell you honestly whether a repair, a restoration coating, or a full replacement is the best value for your situation.
Begin a project
Need a Flat Roof Estimate?
Get a free, no-obligation estimate from the Lowcountry's trusted roofing team. Same-day callbacks and on-site estimates within 48 hours.