A new roof is one of the most significant investments you can make in your home. Whether your roof has reached the end of its lifespan, suffered storm damage, or you’re upgrading for better energy efficiency, understanding the new roof installation process is crucial. In this comprehensive guide, we’ll walk you through every step, from preparation to post-installation checks, ensuring you know what to expect and how to verify a quality installation.

The New Roof Installation Process
1. Initial Roof Inspection and Estimate
Before any work begins, a professional roofing contractor, like Allegiant Roofers, will conduct a thorough inspection. This step ensures accurate cost estimation and identifies any underlying structural issues.
Key Aspects of the Inspection:
- Current roof condition and age
- Damage assessment (shingles, flashing, underlayment, decking)
- Ventilation and insulation evaluation
- Measurement of roof dimensions for material estimation
- Discussion of material options and warranty information
2. Choosing Roofing Materials
Your choice of roofing materials impacts longevity, energy efficiency, and curb appeal. Here’s a comparison of popular options in Cincinnati and Dayton, OH:
Material Type | Lifespan | Cost Range (Per Sq. Ft.) | Pros | Cons |
---|---|---|---|---|
Asphalt Shingles | 20-30 years | $3.50 – $5.50 | Affordable, easy to install, variety of colors | Susceptible to storm damage |
Metal Roofing | 40-70 years | $7.00 – $14.00 | Long-lasting, energy-efficient, low maintenance | Higher upfront cost |
Slate Roofing | 75-100+ years | $10.00 – $20.00 | Extremely durable, elegant | Heavy, requires strong roof support |
Wood Shingles | 25-35 years | $6.00 – $9.00 | Natural look, decent lifespan | High maintenance, fire risk |
Synthetic Roofing | 40-50 years | $8.00 – $12.00 | Lightweight, impact-resistant, aesthetic variety | Newer material, may lack long-term data |

3. Removing the Old Roof
Tearing off the old roof is a necessary step unless overlaying is permitted and beneficial (not recommended for all homes). The crew will:
- Protect landscaping and exterior property
- Remove existing shingles, underlayment, and flashing
- Inspect and replace damaged decking if necessary
4. Installing the New Roof
Step-by-Step Installation:
- Underlayment Installation – A waterproof barrier to protect against leaks.
- Flashing Placement – Around chimneys, vents, and valleys to prevent water intrusion.
- Shingle or Roofing Material Application – Laid out based on manufacturer guidelines for maximum durability.
- Ridge Cap and Ventilation Setup – Ensures proper airflow to extend the roof’s lifespan.
5. Final Inspection and Clean-Up
Before the project wraps up, Allegiant Roofs will:
- Conduct a thorough quality check
- Ensure nails and debris are cleaned up
- Provide a final walk-through with the homeowner
- Discuss warranty details and maintenance tips
What to Check After Having a New Roof Installed
Post-installation inspections are crucial to avoid potential issues. Use this checklist to ensure your new roof meets quality standards.
Post-Installation Checklist:
- Shingles Are Properly Aligned & Secured – Check for uneven edges or gaps.
- Flashing Is Properly Sealed – Around chimneys, vents, and valleys.
- Gutters & Downspouts Are Clear – No roofing debris left behind.
- Attic Inspection – Look for leaks, proper ventilation, and insulation.
- No Loose Nails or Debris – Use a magnet to detect leftover nails.
- Check that roofing was installed correctly around skylights and other features.
- Warranty & Paperwork Are Provided – Ensure you have manufacturer and contractor warranties.
FAQs About the New Roof Installation Process
How long does a new roof installation take?
Most residential roofing projects take 1-3 days, depending on the roof size, complexity, and weather conditions.
Can I stay home during the installation?
Yes, but expect noise and some disruptions. If you work from home or have pets sensitive to noise, consider alternative arrangements.
What should I do to prepare for a roof replacement?
- Move vehicles away from the work area
- Remove fragile items from walls (vibrations may cause them to fall)
- Cover items in the attic to protect from dust
- Notify neighbors about the project timeline
How can I extend the lifespan of my new roof?
- Schedule annual inspections and maintenance
- Keep gutters clean to prevent water damage
- Address minor repairs promptly
- Ensure proper attic ventilation
Why Choose Allegiant Roofs for Your Roofing Needs?
Allegiant Roofs is the trusted roofing contractor in Cincinnati and Dayton, OH, offering high-quality craftsmanship, reliable warranties, and local expertise. Our team ensures every new roof installation process in Dayton, OH meets the highest industry standards, giving homeowners peace of mind.
Ready for a roof replacement? Contact Allegiant Roofs today for a free consultation!