So, you’re thinking about a new roof. Maybe your current one has seen better days — a few leaks here and there, missing shingles after that last storm. Or maybe you’re just tired of constantly patching it up. A complete roof replacement can feel like a major project, and it’s completely normal to wonder what’s actually included.
Let’s break down exactly what is included in a roof replacement, from the structural foundation to the finishing touches — so you know what to expect before the first shingle comes off.
If you’re considering a project, the team at RAM Exteriors is here to help with expert guidance and professional installation.
Delving into the Layers of a Complete Roof Replacement
Replacing a roof involves far more than simply installing new shingles. It’s a full-system upgrade designed to protect your home for decades.
It Starts with the Roof Decking
A proper roof replacement begins by removing all existing roofing materials down to the wood decking.
The decking (also called sheathing) is typically made of plywood or oriented strand board (OSB). Contractors thoroughly inspect it for:
- Rot
- Warping
- Soft spots
- Structural damage
Any compromised sections are replaced before moving forward. A solid foundation ensures your new roofing system performs properly.
Installing Underlayment
Next comes the underlayment — a critical moisture barrier installed over the decking.
Think of it as a waterproof protective layer beneath your shingles. Modern roofing systems use synthetic underlayment because it is:
- More durable than traditional felt
- Tear-resistant during installation
- Lightweight
- Highly water-resistant
This layer provides backup protection if water ever penetrates the outer roofing material.
Ice and Water Shield in Vulnerable Areas
Certain areas of your roof are more prone to leaks — valleys, roof edges, chimneys, skylights, and low-slope sections.
In these critical spots, contractors install ice and water shield. This self-adhering membrane offers an extra layer of defense against water intrusion and ice dams. It helps prevent costly damage during heavy rain or winter freeze-thaw cycles.
Drip Edge Installation
Drip edge is a metal flashing installed along the eaves and rakes of your roof.
Although small, it plays an important role by directing water away from:
- Fascia boards
- Soffits
- Siding
- Roof decking edges
Proper drip edge installation prevents long-term water damage along the roofline.
Flashing Around Roof Penetrations
Flashing is one of the most important components of a leak-proof roof.
Installed around chimneys, skylights, dormers, and vent pipes, flashing prevents water from entering at joints and transitions. During a full roof replacement, old flashing is either replaced or upgraded to ensure maximum protection.
Attic Ventilation
A new roof isn’t complete without proper ventilation.
Good ventilation regulates attic temperatures, reduces moisture buildup, and extends the life of your shingles. Depending on your roof design, contractors may install:
- Ridge vents
- Box vents
- Soffit vents
- Powered ventilation systems
Proper airflow is essential for long-term performance and preventing mold or premature deterioration.
If your home needs improved airflow, consider pairing your new roof with updated insulation and ventilation services.
Installing the Shingles (or Roofing Material)
Now we get to the visible part — the roofing material itself.
Homeowners typically choose from:
- Three-tab asphalt shingles (budget-friendly option)
- Architectural shingles (dimensional, longer-lasting)
- Metal roofing
- Slate or tile systems
Your contractor will help you select the right material based on durability, budget, and aesthetic goals.
If your existing roof has minor issues and doesn’t require full replacement, professional roof repair services may be an option. However, when damage is widespread, a complete roof replacement ensures long-term protection.
What Makes a Roof Replacement Successful?
High-quality materials are important — but skilled installation matters just as much.
An experienced roofing contractor ensures:
- Proper tear-off and disposal
- Structural inspection
- Code-compliant installation
- Correct flashing and ventilation
- Clean jobsite practices
Working with a trusted contractor ensures your investment lasts for decades.
FAQs About What Is Included in a Roof Replacement
What Does Reroofing Include?
Reroofing typically involves installing a new layer of shingles over existing ones without removing the old materials.
In contrast, a full roof replacement removes everything down to the decking. This allows contractors to inspect and repair underlying damage, making it a more thorough and longer-lasting solution.
What’s Involved in a New Roof?
A complete roof replacement usually includes:
- Removal of old shingles and underlayment
- Decking inspection and repairs
- Installation of underlayment
- Ice and water shield in vulnerable areas
- Drip edge installation
- Flashing replacement
- New shingles or roofing material
- Ventilation updates
What Kind of Expense Is a New Roof?
A new roof is considered a major home improvement investment. Costs vary depending on:
- Roof size
- Material choice
- Structural repairs required
- Complexity of the roof design
While it’s not a minor expense, it significantly increases home protection and resale value.
Does Fascia Get Replaced with a New Roof?
Not always. Fascia boards are only replaced if they show signs of rot or damage. During the initial inspection, your contractor will determine whether fascia repair or replacement is necessary.
How Much Does It Cost to Replace 1,000 Sq Ft of Roof?
Costs vary depending on materials, labor, and roof complexity. The most accurate way to determine pricing is through a professional inspection and detailed estimate.
A Big Project — But the Right Team Makes It Simple
A roof replacement is a comprehensive project. While shingles get most of the attention, the true performance of your roof depends on the system underneath — decking, underlayment, flashing, ventilation, and drainage.
Understanding what is included in a roof replacement helps you make informed decisions and avoid surprises.
If you’re ready to explore your options, RAM Exteriors provides expert inspections, honest recommendations, and professional installation to ensure your home stays protected for years to come.