Flat Roofing

Who Installs and Repairs Flat Roofs on the Grand Strand?

Waccamaw Roofing, LLC installs, repairs, and maintains flat and low slope roofs for homes and businesses across Myrtle Beach and the Grand Strand. Every job starts with a free inspection and a written estimate.

Flat roofs are common on porches, additions, garages, carports, and commercial buildings. They are not truly flat. A good one has a slight pitch that moves water to a drain or an edge. When that pitch or a seam fails, water sits, and a leak follows.

This page explains the main flat roofing materials, how to choose between repair and replacement, and how to keep a low slope roof in good shape on the coast.

Flat membrane roof section installed by Waccamaw Roofing

Why Do Flat Roofs Leak More Often?

A steep roof sheds water in seconds. A flat roof moves it slowly, so every seam, edge, and opening has more time to let water in. That is the main reason low slope roofs need more care.

Here are the most common causes of flat roof leaks on the coast:

Ponding water. Low spots hold water after rain. Standing water wears the surface and finds any weak seam.
Clogged drains. Leaves, pine straw, and debris block drains and scuppers. Water then backs up.
Open seams. Heat, sun, and movement can pull seams apart over time.
Failed flashing. Where the roof meets a wall, a unit, or a pipe, the flashing can crack, rust, or pull away.
Wind at the edges. Strong gusts can lift loose edge metal and get under the membrane.

Most of these start small. Caught early, they are simple fixes.

What Does Coastal Weather Do to Low Slope Systems?

Life near the ocean adds stress that inland buildings never see. Each force hits a low slope surface in its own way.

Sun and heat. Our summers are long and hot. Strong sunlight dries out some membranes over time and makes them brittle. A dark surface also soaks up heat, which drives up cooling costs in the rooms below.

Heavy rain. Summer storms can drop a lot of water in a short time. If the drains cannot keep up, water spreads and sits. Every hour it sits is another hour of wear.

Salt air. Salt speeds up rust on edge metal, fasteners, and the housings of rooftop units. Rust around a flashing detail is a common place for a leak to start.

Wind. Gusts push hardest at corners and edges. If the edge metal is loose, wind can slip under the membrane and lift it.

A well built system handles all of this. Good drainage, sealed seams, and firm edges are what keep water out year after year.

Which Flat Roofing Materials Are There?

There are five common choices for low slope roofs. Each has its own strengths, and the best pick depends on the building, the foot traffic, and the drainage.

TPO: a white, single ply membrane with welded seams. It reflects heat, which helps in our long summers.
EPDM: a flexible rubber sheet with a long track record against sun and swings in temperature.
Modified bitumen: layers of asphalt based sheets. Tough, resists punctures, and suits porches and additions.
PVC: a single ply membrane with welded seams. It resists grease and chemicals well.
Built-up: layers of asphalt and felt, often topped with gravel. Common on larger buildings.

How Do You Pick the Right Material?

Start with how the roof will be used. A porch roof that no one walks on has different needs than a commercial roof with units and service crews on top. Then think about the sun, the drainage, and your budget.

If keeping the space below cool is a goal, a white, reflective surface such as TPO can help.
If people will walk on the roof often, a tough, puncture resistant surface such as modified bitumen may be a better fit.
If grease or chemicals are present, such as near a kitchen vent, PVC holds up well.
If the roof has an odd shape or many openings, a flexible sheet such as EPDM can be easier to detail.

On the coast, strong seams and secure edges matter as much as the material. A great product installed poorly will still leak. We explain the choices for your building and put them in a written estimate.

Should You Repair or Replace a Flat Roof?

The answer comes down to four things: the age of the roof, how often and where it leaks, the state of the surface, and whether the insulation or deck below is wet.

A repair usually makes sense when a younger roof has a leak in one spot, such as a seam, a pipe, or a drain. It also fits when the surface is sound and the layers below are dry.

Replacement is often the better choice when leaks keep coming back in new places, the surface is cracked or blistered across wide areas, or the insulation below is soaked. Wet insulation stops working and can rot the deck under it.

We check all four signs during a free inspection. Then we explain what we found and give you a written estimate for each option, so you can choose with clear facts in hand.

How Do You Take Care of a Flat Roof?

A flat roof lasts longest when someone looks at it on a schedule. We suggest a check in the spring and fall, plus one after any major storm.

Clear leaves and debris from drains, scuppers, and gutters.
Look for puddles a day or two after rain.
Check the seams and the edges for gaps or lifting.
Look at the flashing where the roof meets walls, pipes, and units.
Inside, watch for stains on ceilings below the roof.

Fix small problems right away. A short seam repair today can prevent a wet deck next season. The National Roofing Contractors Association publishes guidance on good low slope roofing practice for owners and contractors.

What Happens During a Flat Roof Project?

It starts with a free inspection. We walk the roof, check the drains, seams, and edges, and look inside for signs of leaks. Then we talk with you about what we found and give you a written estimate.

For a repair, we open up the damaged area, fix the cause, and seal it back up. For a new roof, we remove the old layers down to the deck when needed, replace any wet or rotted wood, add insulation where it is called for, and install the new system. We pay close attention to the edges, the drains, and every opening, since that is where flat roofs fail.

We keep the site clean as we work. When the job is done, we walk the roof with you so you can see the result.

What Should You Ask Before You Hire Someone?

A few simple questions will tell you a lot about any contractor, including us.

Will you inspect the drains, seams, edges, and flashing, and show me photos of what you find?
Which material do you suggest for my building, and why?
Will the old layers come off, or will the new system go over them?
How will you handle wet insulation or damaged decking if you find it?
Can I get the full scope and price in writing?

Clear, direct answers are a good sign. Be careful with anyone who will not put the work in writing or pushes you to sign the same day. We are based in Myrtle Beach, SC, and we are glad to answer every one of these questions at your free inspection.

Flat Roofing FAQs for Grand Strand Homes and Businesses

What are the main types of flat roofing?

The common choices are TPO, EPDM, modified bitumen, PVC, and built-up systems. Each one suits a different kind of building, use, and budget.

How do I know if my flat roof needs repair or replacement?

Look at age, leaks, surface wear, and whether the insulation below is wet. A leak in one spot on a younger roof is often a repair. Leaks in many places or wet insulation often mean replacement.

Why does water pool on my flat roof?

Low spots in the deck, clogged drains, or a roof that lost its slight pitch can all hold water. Pooling that lasts more than a day or two should be checked.

How long does a flat roof last?

It depends on the material, the quality of the install, the weather, and the upkeep. Regular checks and quick repairs help any flat roof last longer.

What upkeep does a flat roof need?

Keep the drains clear, check the seams and edges, look for pooling water, and fix small problems fast. A check twice a year and after big storms is a good plan.

Can a flat roof be used on a home?

Yes. Flat and low slope roofs are common on porches, additions, garages, and some modern homes. See our residential roofing page for more on home roofs.

What affects the cost of a flat roofing project?

The size of the roof, the material you choose, the number of layers to remove, the state of the deck, and how easy the roof is to reach. You get a written estimate after a free inspection.

Do you repair flat roofs after storms?

Yes. After high winds or heavy rain, we inspect for lifted edges, open seams, and water damage. Our storm damage roofing page covers the next steps.

Your Next Step: A Free Flat Roof Inspection

Have a flat roof that leaks, holds water, or is simply getting old? Call Waccamaw Roofing, LLC at (843) 488-4181 or request a free estimate online. We will walk the roof, check the drains and seams, and explain your options in plain words.

We serve homes and businesses across the Grand Strand, including Myrtle Beach, Pawleys Island, and Murrells Inlet. See our commercial roofing page for larger buildings, or browse all of our roofing services.

Key Takeaways

Flat roofs work well on many coastal homes and businesses when they are built to drain.
The main choices are TPO, EPDM, modified bitumen, PVC, and built-up systems.
Repair or replace depends on age, leaks, surface wear, and wet layers below.
Standing water, clogged drains, and open seams are the most common causes of leaks.
A check twice a year, plus one after big storms, adds years to a flat roof.
Every job starts with a free inspection and a written estimate.