These are the seven questions Raleigh property owners actually ask before a roof goes on, answered the way we’d answer them on the phone. Read them before you compare estimates, because most of the price differences you’ll see come down to the items below.

Red Letter Roofing is based in Garner and works across Raleigh, Durham, Chapel Hill, Cary, Wake Forest, Carrboro, Morrisville, and more than 20 North Carolina counties. Roughly 85 percent of our work is commercial and 15 percent residential, so these answers cover both.

1. How long does a roof installation take?

For a typical single-family Raleigh home, one to two days of install once material is on site. Steeper pitch, complex rooflines with lots of valleys and dormers, multiple existing layers, and significant decking replacement all add time.

Commercial low-slope roofs are different. Those run from several days to several weeks depending on square footage, the insulation package, deck condition, roof access, and whether the building stays occupied. Occupied buildings usually get phased so tenants aren’t disrupted, and that phasing is planned before anything starts. See commercial roofing.

The part people forget is lead time. Material availability, permits, and weather windows usually determine your start date more than crew scheduling does.

2. What actually happens during the installation?

In order:

• Property protection goes down: tarps over landscaping, plywood on delicate surfaces, dumpster positioned to protect the driveway.

• Tear-off of the existing roof to the deck.

• Deck inspection, and replacement of any soft, delaminated, or rotted sheathing.

• Dry-in: ice and water shield in valleys and at eaves, underlayment across the field.

• Drip edge at eaves and rakes.

• Flashing work: new pipe boots, step flashing, counterflashing, and any wall or chimney details.

• Ventilation, installed to what the assembly needs rather than what was there before.

• Field installation of the roofing material per manufacturer specification.

• Ridge and hip caps, terminations, and final detailing.

• Cleanup, magnet sweep of the yard and drive, and a walkthrough with photos.

If an estimate you’re comparing doesn’t mention steps 3 through 7, ask what it includes. That’s where most of the real cost differences hide.

3. What roofing materials should I choose?

For most Raleigh homes, architectural asphalt shingles. They’re the practical balance of cost, wind performance, appearance, and service life in this climate, and they’re what most Triangle replacements go back on.

Metal costs more up front and lasts substantially longer, which makes it worth considering if you plan to stay a long time or you have a low-slope section where shingles are the wrong product.

Commercial low-slope buildings are a different conversation entirely: single-ply membranes like TPO and PVC, modified bitumen, and built-up systems each suit different buildings, insulation requirements, and roof traffic levels. We install systems from Carlisle, CertainTeed, GAF, Johns Manville, FiberTite, Siplast, Soprema, and Sika Sarnafil, which means the recommendation can follow your building instead of following one product line.

The right answer depends on pitch, exposure, how long you’re keeping the property, and what the deck can carry.

4. Do I need a permit, and who handles it?

Yes, for a replacement, and the contractor should handle it. In Wake County and the City of Raleigh, roof replacements are permitted and inspected work, and requirements are set under the North Carolina State Building Code, which the North Carolina Office of State Fire Marshal administers.

A contractor who suggests skipping the permit is telling you they intend to skip other things too. Unpermitted work also surfaces at closing when you sell.

5. Can I put a new roof over the old one?

Sometimes it’s allowed. It’s almost always a bad idea.

Going over the existing roof means nobody inspects the decking, so any rot stays under your new roof. It adds weight to the structure. The new shingles sit on an uneven surface and run hotter, which shortens their life. And the eventual tear-off costs more because there are two layers to remove.

A tear-off costs more today and gives you a roof that performs the way it’s supposed to. If there are already two layers, code and common sense both say tear off. More on the full process is on the roof replacement page.

6. What warranties come with a new roof?

Two separate things, and they cover different failures.

Manufacturer warranty covers the material against defects. Length and terms depend on the product, and most require installation to specification. Some manufacturers offer extended system warranties when an approved installer uses a full system of their components, which is one practical reason manufacturer relationships matter.

Workmanship warranty comes from the contractor and covers installation. This is the one that handles the vast majority of real-world problems, because most roof failures are installation failures, not material failures.

Get both in writing. Ask what voids each one, and ask whether the manufacturer warranty is transferable if you sell. And apply the obvious test: a workmanship warranty is only worth the odds the company is still answering the phone.

7. What will it cost, and why do estimates vary so much?

Roof cost in the Raleigh market comes down to measurable things: square footage, pitch, number of existing layers, decking condition, complexity of the roofline, material grade, and access. Typical market ranges exist but they’re wide, and any firm price given before someone measures your roof is a guess.

Estimates vary because scopes vary. The usual differences:

Line item	Cheaper estimate	Complete estimate
Underlayment	Minimum felt	Synthetic underlayment plus ice and water shield at valleys and eaves
Flashing	Reuse existing	New flashing and pipe boots
Drip edge	Omitted	Installed at eaves and rakes
Decking	Not mentioned	Per-sheet allowance disclosed up front
Ventilation	Reuse whatever is there	Corrected to what the assembly needs
Disposal and cleanup	Vague	Included, with magnet sweep
Permit	“Not needed”	Pulled and inspected
Warranty	Verbal	Written workmanship and manufacturer terms

 

Compare scopes, not just totals. A number that’s meaningfully lower is usually lower for a reason you’ll pay for later.

A Few Quick Ones

Do I need to be home during the install?

It helps to be reachable, but you don’t need to be there. We document everything with photos regardless.

Will the noise bother my tenants or neighbors?

Tear-off is loud. On commercial and multifamily properties we schedule around tenant needs and give notice. Our commercial background means that coordination is routine rather than an afterthought.

What happens if it rains mid-install?

The roof gets dried in before the crew leaves each day. That’s non-negotiable, and it’s why weather windows drive scheduling.

Do you install on new construction?

Yes. See new construction roofing for how we work with builders.

Talk to a Roofer Today

If you’ve got a question that isn’t answered here, ask it directly. Call (919) 977-5318 or talk to a roofer today. We’ll look at the roof, explain what we see, and give you an itemized scope you can compare against anyone else’s. Start with residential roofing for homes or commercial roofing for buildings. If a full install isn’t what you need yet, roof repair covers the smaller work, and our Raleigh roofing page has local detail.