Expert Flat Roofing for Wilmington & Coastal North Carolina

Wilmington’s summer storms can dump inches of rain in an hour, and our coastal humidity accelerates wear. A well-designed flat roof can shed heavy rains quickly, reflect sunlight to lower rooftop surface temps, and hold up to salt air. ‍

Is a permit required to install a flat roof in Wilmington?

Yes. In Wilmington and New Hanover, Pender, or Brunswick Counties, any re-roof—even a flat system—requires a building permit. We handle the entire permit process through the local building departments so you don’t have to.

How do flat roofs handle heavy summer rain?

Properly installed flat roofs use tapered insulation and multiple drains to channel water off the deck quickly—preventing ponding and leaks even during Wilmington’s sudden downpours.

Finished TPO flat roof in Washington, DC.
Flat Roofing in Washington, DC. TPO Roofing DC.
Roofing in Washington, DC.
Details of TPO flat roofing installation.
Residential TPO flat roof in Washington, DC.
Finished photo of a TPO flat roof.

Flat Roofing Services We Offer in Wilmington

Flat or low-slope roofs offer a sleek look and maximize usable space—ideal for both homes and businesses. In Wilmington’s humid, coastal climate, durable options like TPO, modified bitumen, and standing seam metal perform best. We handle commercial roof repairs and replacements for all types of buildings, including schools, churches, HOAs, shopping centers, hospitals, and offices—delivering tailored solutions for every structure.

Flat Roof Replacement or Installations

Ideal for row houses, offices, carports, porches—done seamlessly with minimal disruption.

Flat Roof Repairs & Maintenance Packages

Includes leak sealing, membrane re-welding, drain clearing—vital in Wilmington’s damp climate.

Commercial & Residential Services

From storefronts to historic homes, we handle all project sizes.

Permitting and Inspections


We secure local permits and perform final inspections to meet code—Wilmington structures require proper drainage and waterproofing.

Flat Roofing Systems We Install

We’re certified to install durable TPO and modified bitumen roofing systems—built to withstand Wilmington’s coastal weather on flat and low-slope roofs.

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TPO Rubber Roofing
20 - 30yr Warranty
Seamless welds, reflective white surface, excellent UV and storm resistance
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Modified Bitumen Roofing
15 - 25yr Warranty
Hybrid asphalt sheets, tough in coastal weather—torch-down or self-adhered

TPO Flat Roof Layers

Wood Deck

All roof layers are stripped to reveal the wood deck, which is thoroughly inspected and replaced.

Poly ISO Insulation

Polyisocyanurate insulation board goes down as a base layer. ISO board is a high density insulation board. Total R-Value is dependent on the amount of insulation installed. Learn more about insulation >

R-value Upgrade

R-value represents an insulation's effectiveness at resisting heat travel. Upgrades include more poly-ISO, staggered seams, and longer fasteners. We offer 5 options, from R6 up to R30.

Fasteners

Fasteners securely hold down the poly-ISO, protecting against wind uplift.

TPO Membrane with Adhesive

Standard size .60mil TPO membrane is glued and the seams are overlapped.

Welded Seams

A machine welder is rolled over seams, melting them together create one continual seamless surface.

What is a TPO Roof? Photo of a fully adhered TPO flat roofing system.A photo of a TPO Cool Roof showing how TPO white roofing reflects the sun to keep temperatures cooler on the roof.
Training video of flat roofing from MuleHide.

30+ Years’ Experience

Thousands of satisfied home owners.

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Lifetime Warranties

Highly certified with Atlas, GAF, James Hardie, TimberTech & more.

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Add Value To Your Home

A family team proud to add value to your home.

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Trusted by local homeowners.

My husband and I met with Pat Jewell and he was such a pleasure to work with. Very knowledgeable and kind. We felt comfortable with this company.
We are very pleased with the work that Capitol Improvements did and we would highly recommend and use them again in the future.
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Carlos, Yelp Reviews
They had the most competitive prices and did not try and upsell. Their teams are efficient, professional, very clean, and on time.
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Veronica, Google Reviews
Seth and install team were organized and project went smoothly. Entire team was responsive and kept in touch throughout the process.
They replaced my roof including skylights in April 2023 and I am very satisfied. Melinda as my first contact was very professional and got me on the schedule quickly.
It was easy to work with Pat to get a quote. We did both a roof on our house and our shed, we also had new gutters put on our den. The crew was very hardworking and efficient.
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