What Does a Roofing Contractor in Marietta Actually Do on the Job?

A roofing contractor in Marietta handles every part of a roofing project — from initial inspection and material selection to tear-off, underlayment, shingle installation, flashing, ventilation, and cleanup. On a typical job day, the crew arrives early, strips the old roof down to the deck, inspects the wood for damage, installs protective layers, puts on new shingles, and finishes with a thorough magnetic nail sweep. Most Marietta roofs are done in a single day.

That quick summary covers the basics, but there's a lot more happening on your roof than most homeowners realize. Let's walk through the entire process — the way we do it here in Marietta at First Response Home Services.

Before the Crew Shows Up: Planning and Preparation

A good roofing job starts long before anyone climbs a ladder. When you call us for a free estimate, we send someone to your home to inspect the roof in person. This isn't a quick glance from the driveway — we're up on the roof looking at the condition of your shingles, checking for soft spots in the decking, evaluating the ventilation system, and measuring the roof's square footage.

In Cobb County, most roofing work requires a permit from the county building department. Your roofing contractor handles that paperwork for you. We pull the permit, schedule the inspection, and make sure everything meets local building codes. Any contractor who tells you permits aren't necessary in Marietta is cutting corners — and that should be a red flag.

Once you approve the estimate, we order your materials. For most Marietta homes, that means laminate architectural shingles from GAF or Tamko. We also order underlayment, ice and water shield, drip edge, starter strip, ridge caps, pipe boots, and flashing materials. The materials typically get delivered to your driveway a day or two before the job.

Installation Day: What Actually Happens on Your Roof

Morning: Setup and Tear-Off

Our crew arrives around 7:00 AM. The first thing we do is set up — tarps go down to protect your landscaping, a dumpster gets positioned in the driveway, and ladders go up. We also set up safety equipment. Falls are the number one hazard in roofing, and on steeper pitches common in many Marietta subdivisions, harnesses and roof jacks are essential.

Then the tear-off begins. We strip every old shingle off the roof, down to the bare wood deck. Some contractors will roof over existing shingles to save time and money. We don't do that. Georgia building code allows a maximum of two layers of shingles, but even one extra layer traps heat and moisture, adds unnecessary weight, and hides deck problems. A clean tear-off is the only way to do the job right.

With the old shingles removed, we inspect every inch of the decking. We're looking for rotted plywood, soft spots, water stains, and any structural issues. If we find damaged wood, we replace it with new OSB or plywood. In Marietta's humid climate, it's not uncommon to find some rot around pipe penetrations or in valley areas where water flows heavily.

Mid-Morning: The Layers You Don't See

This is the part most homeowners never think about, but it's arguably the most important. Before a single shingle goes on, we install several protective layers:

• Drip edge: A metal strip that goes along the eaves and rakes, directing water away from the fascia boards and into the gutters.
• Ice and water shield: A self-adhesive, waterproof membrane that goes along the eaves, valleys, and around penetrations. In Marietta, we install this at least 3 feet up from the eave edge — where ice dams and wind-driven rain are most likely to cause problems.
• Synthetic underlayment: A breathable, water-resistant layer that covers the entire roof deck. This is your backup waterproofing if a shingle ever gets damaged or blown off.
• Starter strip: A special row of shingles along the eaves that provides a seal line for the first course of shingles.

If any of these layers are skipped or installed incorrectly, it doesn't matter how nice your shingles look — the roof will fail prematurely. This is one of the key differences between a skilled roofing professional and someone just nailing shingles on a roof.

Afternoon: Shingle Installation

Now the shingles go on. This is the part that seems straightforward, but proper shingle installation involves specific nailing patterns, precise overlap measurements, and careful alignment. Each shingle gets nailed in a designated "nail zone" — too high and the shingle won't hold in wind; too low and you risk cracking the shingle below.

For standard laminate shingles, each one gets four to six nails depending on the manufacturer's specifications and the roof's wind zone. Marietta falls within a moderate wind zone, but if your home is on an exposed hilltop or at the end of a street where wind funnels, we may use six nails per shingle for extra hold.

As the crew works up the roof, we also handle all the detail work that makes or breaks a roof's longevity:

• Valley flashing: Where two roof planes meet, water concentrates. We install metal valley flashing or use a woven valley technique to channel water safely.
• Pipe boots: Every plumbing vent pipe that penetrates the roof gets a new rubber boot and flashing collar. Old pipe boots are one of the most common sources of roof leaks in aging Marietta homes.
• Step and counter flashing: Where the roof meets a wall or chimney, we install metal flashing that tucks behind the siding and under the shingles to create a watertight transition.
• Ridge caps: Along the peak of the roof, we install specially designed ridge cap shingles that wrap over the top and seal the ridge vent.

Ventilation: The Part Most Homeowners Don't Think About

Proper attic ventilation is critical in Georgia's climate, and it's something a good residential roofing contractor pays close attention to. During a Marietta summer, an unventilated attic can reach 160°F or more. That trapped heat cooks your shingles from underneath and drives up your cooling bills.

The system works like this: cool air enters through soffit vents at the eaves, flows up the underside of the roof deck, and exits through ridge vents at the peak. This continuous airflow keeps the attic closer to outside temperature and carries away moisture. We check your ventilation during every roof replacement and add ridge vent if your home doesn't already have it.

In winter, proper ventilation prevents moisture buildup that can cause mold and rot in your attic framing. Many older Marietta homes were built before modern ventilation standards, and we've seen significant attic moisture problems in neighborhoods throughout East Cobb, Kennesaw, and central Marietta.

Cleanup: The Part That Separates Professionals from Amateurs

When the last ridge cap is nailed, the job isn't done. A professional roofing contractor takes cleanup just as seriously as installation. Our crew picks up all debris from the ground, clears the gutters of any granules and nail fragments, and runs a magnetic roller across your entire yard, driveway, and walkways to catch stray nails.

Those roofing nails are no joke — they'll puncture car tires and are dangerous for kids and pets. We typically make three passes with the magnet to make sure we've caught everything. The old shingles and debris go into the dumpster, which gets hauled away the same day or next morning.

Finally, we do a walkthrough with you. We show you the completed roof, point out the key details (ridge vent, pipe boots, valley work), and answer any questions. We also leave you with warranty information from both the manufacturer and our workmanship guarantee.

How This Differs From a Handyman or DIY Approach

We occasionally get calls from homeowners who had a handyman or unlicensed worker do their roof and now have problems. The difference between a professional roofing contractor and a general handyman isn't just experience — it's licensing, insurance, manufacturer certifications, and warranty backing.

A licensed roofing contractor in Georgia carries liability insurance and workers' compensation coverage, so if someone gets hurt on your property, you're protected. We also hold certifications from leading manufacturers like GAF and Tamko, which means they will honor their warranty on our installations. If an unlicensed installer puts on the same shingles, the manufacturer warranty may be void.

There's also the building code factor. Cobb County inspectors check permitted roofing work to make sure it meets code. Without a permit, you have no third-party verification that the work was done correctly — and that can create problems when you sell your home.

What Should You Do Before Hiring a Marietta Roofer?

Now that you know what a roofing contractor actually does, here are a few steps to take before you hire one:

1. Get a detailed written estimate — not a verbal quote. It should itemize materials, quantities, and scope of work. Get a free estimate from us to see what a thorough proposal looks like.
2. Verify their license and insurance — ask for a certificate of insurance and check their Georgia contractor license.
3. Ask about ventilation — if a roofer doesn't mention attic ventilation, that's a concern.
4. Understand the warranty — know the difference between the manufacturer's material warranty and the contractor's workmanship warranty.
5. Check how long they've been in business — many roofing companies don't last five years, and your warranty goes with them.

Have more questions about roofing in Marietta? Check our FAQ page or browse our other roofing guides for more straight-forward answers.