Slate Roof Repair
Slipped and broken slates replaced one at a time with matching stone and proper hooks or nails, so a slate roof keeps its long life.
Learn moreAsphalt shingle roof replacement for New York, NY homes
A new shingle roof is more than new shingles. It is a clean deck, the right underlayment, new flashing at every wall and chimney, proper ventilation, and shingles nailed the way the maker requires.
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- Tear-off to the deck
- Ice barrier and new flashing
Quick answer: A shingle roof replacement in New York, NY removes the old shingles down to the deck, replaces damaged sheathing, installs ice barrier at eaves and valleys and underlayment elsewhere, then new flashing, ventilation and architectural shingles. Where a roof already has two layers or is water-soaked, the code does not allow another layer over it.
What the job involves
What a full shingle replacement includes
Tear-off exposes the deck, which is where problems hide: soft sheathing, gaps, old leak damage. Those are repaired before anything new goes down. Then come ice barrier along the eaves and in the valleys, underlayment over the rest, drip edge at every edge, and new flashing at walls, chimneys and pipes.
Ventilation matters as much as the shingles. Intake at the soffits and exhaust at the ridge keep the attic drier in winter and cooler in summer, and shingle makers tie their warranties to it. Old roof vents are replaced to suit the new system.
Your options
Recover or tear-Off?
| Option | When it is allowed | Tradeoffs |
|---|---|---|
| Recover over one layer | One existing layer, dry and sound, and the shingle maker allows it. | Cheaper up front, but it hides the deck and adds weight. |
| Tear-off | Two or more layers, water-soaked shingles, or doubt about the deck. | Costs more, but the deck is inspected and the new roof lies flat. |
Cost factors
What a shingle roof costs depends on
Roof size and pitch
Roof area and how steep it is.
Layers to remove
Two layers mean more labor and disposal.
Deck repairs
Soft sheathing replaced after tear-off.
Shingle line
Architectural, designer and impact-rated shingles differ in price.
Flashing and ventilation
Chimneys, walls, skylights and a ridge vent.
Gutters and trim
Drip edge, fascia repairs, or new gutters at the same time.
Typical range: Published 2026 guides put New York residential asphalt shingle replacement from around $7 per sq ft, with the New York City metro and Long Island running above the rest of the state. A planning figure, not a quote.
Variations of the job
Replacement choices we walk you through
Architectural shingles
Laminated shingles with a thicker, dimensional look and better wind ratings than old three-tab shingles. They are the standard choice for full replacements on most houses now.
Tear-off to the deck
Every layer comes off so the deck can be inspected and repaired. It is also required when the roof already has two layers or the old shingles are water-soaked.
Ice and water barrier
Self-adhered membrane along the eaves and in valleys, where ice dams and heavy water flow push water under shingles. It seals around the nails driven through it.
Local conditions
When the code rules out another layer
Under the New York State residential code, a new roof cannot go over an existing one that is water-soaked or already has two or more layers, and a replacement removes the old coverings down to the deck. Across Long Island, where asphalt shingles cover most houses, a house that was recovered once already has its second layer, so its next replacement is a full tear-off.
What is included
What a shingle replacement quote should list
- Full tear-off, and how many layers
- Deck repair and how it is priced
- Ice barrier at eaves and valleys
- Underlayment for the rest of the roof
- Drip edge on eaves and rakes
- New flashing at walls, chimneys and pipes
- Ventilation plan for intake and exhaust
- Shingle make, line and color
- Cleanup, including a nail sweep
How it runs
How a shingle replacement runs
- 1
Inspect and measure
Every slope, the attic and the ventilation.
- 2
Protect the property
Tarps over plantings, and gutters and windows covered.
- 3
Tear off and repair the deck
Down to the sheathing, soft boards replaced.
- 4
Underlayment, flashing, shingles
Ice barrier, drip edge, flashing, then shingles.
- 5
Clean up and walk through
Debris out, a magnetic sweep for nails, final photos.
Shingle makers we choose between for replacements, picked for wind rating, color and warranty requirements.
GAFCertainTeedOwens CorningIKOAtlasTamkoMalarkey
Questions we hear
Shingle roof replacement questions
Only over a single dry layer, and many owners are better served by a tear-off anyway. The code does not allow a recover over a roof that is water-soaked or already has two layers.
Most houses take a few days of work, weather permitting. Deck repairs, steep pitches and complex roofs add time.
A vented attic stays drier and cooler, which protects the deck and the shingles. Shingle makers generally require proper ventilation for their warranties.
A self-adhered membrane laid under shingles at the eaves and in valleys. It stops water that backs up under the shingles from ice dams or heavy flow.
Architectural shingles are thicker, carry better wind ratings and last longer. Three-tab is rarely the better value for a full replacement now.
Related services
Related roofing work
Metal Roofing
Standing seam, copper and flat-seam metal installed and repaired on pitched roofs, mansards, dormers and bay tops.
Learn moreMansard Roof Repair
Slate and shingle mansards, with the dormers, gutters and flashing that come with them, repaired on steep faces most roofers avoid.
Learn moreTime for a new shingle roof?
Call for a roof inspection and a quote that spells out every layer.