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Roof Replacement

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Replacing a roof is the one moment when the parts of the assembly that actually decide its survival are visible and cheap to improve. Once the old covering is off, the sheathing, its fastening, the underlayment and the edge metal are all exposed, and the upgrades that matter in a storm cost far less then than they ever will again. A homeowner who treats the job as a shopping decision about shingle color gives that opportunity away.

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What counts as an upgrade depends on the hazard in your region. On the hurricane coasts and across the wind belt, it is deck fastening, a sealed roof deck and a covering rated for the design wind speed. In hail country, it is impact resistance and the products an insurer recognizes. In the hot South and Southwest, reflectance and attic ventilation drive the cooling load. In the North, it is ice at the eaves and the attic conditions behind it.

The commercial side has its own pattern in the United States. Licensing is by state and sometimes by city, permits and inspections are local, and the contract is where the tear-off allowance for bad decking, the disposal, the workmanship warranty term and the manufacturer's installation conditions either get written down or get argued about later.

Tear-off versus roofing over: what a second layer costs you later

Roofing over an existing layer is permitted in some jurisdictions and forbidden in others, and where it is allowed the decision is still not neutral. A recover leaves the old covering, the old underlayment and whatever condition the sheathing is in underneath, all of which stay invisible for the life of the new roof. It also rules out the upgrades that make the biggest difference in wind, because you cannot seal a deck you cannot see or re-nail sheathing that is buried.

A tear-off exposes the deck, which is the point. It lets the crew replace damaged panels, re-fasten the sheathing, seal the deck against wind-driven rain, install new flashing at every wall and penetration, and start the new covering on a clean, flat plane. It also produces a dumpster, a day of noise and a disposal line on the invoice, and that visible cost is why the cheaper option keeps getting offered.

When you compare quotes, confirm which method each is priced on before anything else. A recover and a tear-off are different projects with different lifespans, and comparing their totals as if they were the same job is the single most common mistake in roof buying.

Wind ratings, impact ratings and reflectance: the numbers that matter on a US roof

Asphalt shingles are not interchangeable, and the differences are published as test ratings rather than marketing adjectives. The Department of Energy's Building America guidance for hurricane and high-wind regions calls for shingles rated to ASTM D3161 Class F or ASTM D7158 Class G or H, installed with a minimum of four nails per shingle, and recommends impact-rated shingles meeting UL 2218 Class 4 in hail-prone areas. Those are the two ratings to ask for by name in a storm market, and they appear on the product data sheet, not in the brochure.

  • Architectural asphalt shingles: the default covering on American houses, with the wind and impact ratings varying widely between lines from the same manufacturer.
  • Impact-rated shingles: tested to UL 2218 Class 4, worth asking your insurer about specifically in hail states before you choose a line.
  • Metal panels and metal shingles: long service life, a high-performing option in wind when fastened to the manufacturer's pattern, and available with reflective coatings.
  • Concrete and clay tile: standard across Florida, the Southwest and parts of California, and heavy enough that a switch to tile is a framing question before it is a roofing one.
  • Cool-colored coverings: EPA lists asphalt shingles surfaced with light or cool-colored granules, tiles with reflective glazes or coatings, and coated metal shingles as steep-slope cool roofing options.
  • Low-slope membranes: porch roofs, additions and dormers usually need a membrane system rather than shingles, and the transition detail between the two is a frequent leak point.

Upgrades to specify while the deck is open

The Building America guidance for hurricane and high-wind regions is specific about the deck itself: roof decking should be at least seven-sixteenths inch OSB or plywood, fastened with 8d ring-shank nails spaced no more than six inches on center along panel edges and twelve inches in the field. On an older house, that fastening schedule often bears no relation to what is actually up there, and a tear-off is the only practical moment to correct it.

Sealing the deck is the second upgrade, and it is what keeps wind-driven rain out of the house when the covering itself is damaged. Building America describes three approaches: a full layer of self-adhering polymer-modified bitumen membrane over the deck, taping the panel joints and then fastening underlayment with annular ring-shank fasteners, or two layers of underlayment installed in shingle fashion. Any of them turns the deck into a secondary water barrier instead of a sieve.

The insurance industry's research institute, IBHS, packages the same thinking into its FORTIFIED Roof program, a voluntary re-roofing standard whose requirements include a sealed roof deck, prescriptive enhanced fastening, drip edge and edge metal details, and protection for gable vents; its 2025 residential standard applies to newly permitted projects and roof installations from November 1, 2025. FEMA publishes a parallel retrofit guide for one- and two-family dwellings in hurricane-prone regions, organized into successive mitigation packages so a homeowner can see which measures belong together.

Cool roofs, the retired ENERGY STAR roof label, and where incentives still exist

Reflectance is the energy question on a roof. EPA explains that a high solar reflectance, or albedo, is the most important characteristic of a cool roof, with thermal emittance, how well the surface sheds the heat it does absorb, also playing a role, and it reports that in non-air-conditioned residential buildings cool roofs can lower maximum indoor temperatures by roughly 2.2 to 5.9 degrees Fahrenheit. The caution is seasonal: reflecting sunlight can raise heating use in cold climates, a penalty EPA says is typically offset by summer cooling savings, which is why the benefit is largest in hot markets.

Do not go looking for the old label. EPA sunset the ENERGY STAR roof products specification, and certification bodies stopped certifying new roof products to the Version 3.0 specification on June 1, 2021, with the agency explaining that building codes had overtaken the label and that homeowners would be better served by regionally tailored guidance. Any roofing salesperson still presenting an ENERGY STAR roof logo as a current certification is working from stale material.

Incentives now come from states, cities and utilities rather than from a national roof label, and they vary enormously; some hot-climate utilities support reflective roofing, and some coastal states support wind mitigation through insurance premium credits rather than cash. Ask your own electric utility and your state insurance department what exists where you live before you assume either way.

Permits, inspections and the contract terms that decide the job

A full replacement almost always needs a permit, and in many jurisdictions it brings an inspection at the deck stage, before the new covering goes down. That inspection is worth welcoming rather than avoiding, because it is an independent look at the part of the job you will never see again. Confirm with your building department which inspections apply and who is required to be present.

Licensing runs on a separate track from permitting. Minnesota licenses residential roofing businesses through its Department of Labor and Industry and requires each licensed company to designate a qualifying person, while Florida's statute limits a registered contractor to the counties, municipalities or development districts where they have met the local requirements, with certification being the statewide credential. Check what your state issues before you assume a badge on a truck means anything.

The contract is where a replacement is won or lost. Get the tear-off method, the number of layers being removed, the underlayment and ice barrier products, the flashing that is being replaced rather than reused, the ventilation plan, the disposal, the daily cleanup and the deck-repair arrangement all written down. Decking is the classic surprise: agree in advance how replacement sheets are measured, documented and billed, so the conversation on the roof is about carpentry rather than about money.

Manufacturer warranties, workmanship warranties and the paperwork that survives a sale

Two promises come with a new roof and they cover different failures. The manufacturer warrants the covering, typically conditioned on installation to their published instructions and sometimes on using a full system of their own components; the contractor warrants the installation, which is what a leak at a valley or a badly set boot actually falls under. A long material warranty from a company that installs badly is worth very little, and a strong workmanship warranty from a company that closes is worth nothing.

Ask for both documents in writing, with the term of each stated plainly, and ask specifically whether the manufacturer's warranty requires registration after installation and whether it transfers to a buyer. Keep the permit, the final invoice, the product data sheets showing the wind and impact ratings, and the photographs taken during the tear-off in one place; that package is what supports a future claim, a wind mitigation inspection or a sale.

LokalMatch sits at the start of this: you describe the roof replacement once, including the house's age, the current covering and anything you already know about the deck, and roofing companies working in your area contact you. They pay for those requests. LokalMatch does not perform roofing work, does not set prices, and does not vet, rank or recommend any company, so the comparison of methods, ratings and warranty terms is yours to make.

Scheduling a re-roof around your region's weather

  • Coastal and Gulf markets: crews are busiest and materials scarcest immediately after a named storm, so wind upgrades are easier to get done in a quiet season than in a queue.
  • Hail markets: spring and early summer storms drive the demand spike, and the contractors still available in the week after a storm are not always the local ones.
  • Northern markets: asphalt shingles need warmth to seal down properly, so late-season work relies on hand-sealing and careful handling, and a crew that explains how they manage it is telling you something useful.
  • Hot, sunny markets: afternoon heat governs both the working day and how the shingles behave underfoot, and early starts are normal rather than a sign of a rushed job.
  • Any market: a roof going on under pressure after a leak is a worse roof than one planned for a dry week, which is the practical argument for replacing before the failure rather than after it.

Roof Replacement: frequently asked questions

Which shingle ratings should I ask for?

In wind-exposed regions the Department of Energy's Building America guidance points to shingles rated ASTM D3161 Class F or ASTM D7158 Class G or H, installed with at least four nails per shingle, and in hail-prone areas to impact-rated shingles meeting UL 2218 Class 4. Ask for the product data sheet for the exact line being quoted, since ratings differ between lines from the same manufacturer, and ask your insurer whether an impact rating changes anything on your policy.

What is a sealed roof deck and is it worth doing?

It is a secondary water barrier applied directly to the sheathing so that wind-driven rain cannot pour through the deck joints if the covering is torn off. Building America describes three ways to achieve it: a full self-adhering polymer-modified bitumen membrane, taped panel joints with underlayment fastened using annular ring-shank fasteners, or two layers of underlayment in shingle fashion. It can only be done during a tear-off, which is what makes a replacement the moment to decide.

Is there still an ENERGY STAR rating for roofing?

No. EPA sunset the ENERGY STAR roof products specification, and certification bodies stopped certifying new roof products to the Version 3.0 specification on June 1, 2021, on the reasoning that building codes had overtaken the label. Reflective roofing still matters in hot climates, and EPA's heat island program describes the cool roofing options available for steep-slope residential roofs, but the label itself is no longer the way to compare them.

Will a reflective roof save me money in a cold state?

Less than it would in a hot one, and possibly not at all. EPA notes that because cool roofs reflect sunlight and reduce solar heat gain, they can increase heating energy use in cold climates, a penalty typically offset by summer cooling savings. In a heating-dominated market the better investments on a re-roof are usually attic air sealing, insulation and balanced ventilation, which pay in both seasons.

Do I need a permit and an inspection to replace my roof?

Almost certainly a permit, and in many jurisdictions an inspection once the deck is exposed and before the new covering goes down. The exact requirements are set by the city or county enforcing your state's adopted code, so call the building department with your address. Confirm that the contractor doing the work is the one named on the permit, and be wary of any suggestion that you pull it yourself as the owner.

What is FORTIFIED, and do I need it?

FORTIFIED is a voluntary re-roofing and construction standard published by IBHS, the insurance industry's research institute, aimed at high winds, hurricanes and hail. Its roof requirements include a sealed roof deck, prescriptive enhanced fastening, drip edge and edge metal details and gable vent protection, and its 2025 residential standard applies to newly permitted projects and roof installations from November 1, 2025. It is not a legal requirement, but in some coastal states insurers recognize it, so it is worth asking about before you sign.

Sources

  1. DOE Building America Solution Center: hurricanes and high winds overview
  2. IBHS: FORTIFIED 2025 residential technical documents
  3. FEMA P-804: Wind Retrofit Guide for Residential Buildings, technical advisory
  4. EPA: using cool roofs to reduce heat islands
  5. ENERGY STAR: roof products specification sunset
  6. Minnesota Department of Labor and Industry: residential roofer license requirements
  7. Florida Statutes 489.117: registration and certification of contractors

Written by the LokalMatch editorial team. Last reviewed September 14, 2026. How we write and check our guides

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What affects the cost of roof replacement

Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:

  • Roof size and the number of layers to remove
  • Roofing material
  • Slope and how steep the roof is to work on
  • Access to the roof and the site
  • Condition of the decking underneath
  • Flashing, vents, skylights and chimneys to work around
  • Amount of repair work compared with a full replacement

How to compare roofers before you hire

  • Ask for a written quote that lists the materials, the scope of work and what happens if damaged decking is found once the old roof is off.
  • Look for a roofer who inspects the roof in person, including the attic if possible, before giving you a price.
  • Check that they carry liability insurance and workers' compensation coverage, since roof work is high-risk.
  • Compare quotes on the same scope: tear-off or overlay, underlayment, flashing, vents and cleanup.
  • Ask to see recent roofs they've done that are similar to yours in material and slope.

Questions to ask roofers before you hire

  • Will you remove the old roofing or install over it, and why?
  • How will you handle damaged decking or other surprises once the roof is open?
  • Who will pull the permit if one is needed?
  • Can you show me proof of liability insurance and workers' compensation coverage?
  • What warranty do you offer on your workmanship, and how long does it last?
  • How will you protect my yard, gutters and siding, and how will you clean up nails and debris?
  • Will your own crew do the work, or will you use subcontractors?

When to call a pro for roof replacement

  • Water stains on ceilings or in the attic after rain or snowmelt
  • Missing, curled or cracked shingles, or granules collecting in the gutters
  • Sagging areas on the roof, which should be looked at by a professional right away
  • Ice dams that keep forming along the edge of the roof

Roof replacement permits and local rules

Some roof replacement work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.

Permits and licensing

Seasonal maintenance

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