Impact Roofing

5940 Craft Rd. Alexandria, VA 22310

Contractor writing a detailed roof replacement estimate with a clipboard in front of a residential home.

Roof Replacement Estimate Guide


A roof replacement is a significant investment, and understanding every aspect of your proposal is key to ensuring a successful outcome. At Impact Roofing & Renovations, we believe in complete transparency and educating our clients. This guide aims to walk homeowners through the crucial elements of a roof replacement estimate, highlighting the importance of each component of the proposal, including the often-overlooked aspect of warranties.

1. Manufacturer-Specified Shingles or Materials

Quality Assurance: The proposal should specify the type and brand of shingles or roofing materials, ensuring they are suitable for your home’s needs and local climate conditions. High-quality materials backed by manufacturer warranties offer added assurance and long-term value.  Impact Roofing & Renovations are certified installers of Owens Corning and Certainteed, the leading manufacturers of shingles in the country.  We also have GAF certified installers on our team.

2. Type of Underlayment

Vital Protection Layer: The underlayment type (felt, synthetic, rubberized asphalt) should be specified, explaining how it protects your roof deck from moisture and enhances the overall durability of your roof.

3. Ice & Water Shield

Guarding Against Elements: This shield is crucial in cold climates for preventing water penetration and ice dams.  It helps protect the roof where water has a tendency to collect or flow, including valleys, eaves, chimneys and skylights.  Ice & Water shield is a moisture barrier that prevents damage associated with shingle blow-off, wind-driven rain and ice damming.  Details on installation and material quality & type should be included in the proposal.

4. Drip Edge

Preventing Water Damage: The proposal should outline the material and installation method of the drip edge, a key component in directing water away from your home’s structure.

5. Ridge Vent & Ventilation

Comprehensive Airflow Management: A well-ventilated roof is essential for the longevity and efficiency of your home. The proposal should detail the installation of a ridge vent, designed to release hot, moist air from the attic. The proposal should detail the type of vent and its effectiveness in prolonging the life of your roof. To complement the ridge vent, additional ventilation accessories might be recommended, such as gable vents, soffit vents, powered ventilation, baffles, and box vents.

6. Starter Shingles

Foundation for Durability: Starter shingles are crucial for wind resistance and overall roof integrity. They ensure a straight edge and effective seal along the eaves and rake, areas that are vulnerable to high winds. The proposal should describe their placement and how they contribute to the roof’s aesthetic and function.

7. Pipe Collars and Flashing

Leak Prevention: These components are vital for waterproofing around roof penetrations. The material choice and expected lifespan should be detailed in the proposal.

8. Hip and Ridge Shingles

Critical for Performance and Aesthetics: Hip and Ridge shingles specialized shingles are designed to protect and reinforce the roof’s most vulnerable points—the hips and ridges where different roof planes meet. They not only enhance the roof’s appearance but also ensure continuity in design and integrity. The proposal should specify the type that matches the main roofing materials for a cohesive look and extended warranty protection.

9. Warranties

Your Assurance of Quality and Protection: One of the most critical aspects of your proposal is the warranty coverage. This section should detail:

    • Manufacturer Warranty: Coverage for the roofing materials against defects.
    • Workmanship Warranty: Offered by the roofing company, covering the installation quality.

Understanding the Terms: The proposal should clearly outline the length of the warranties, what is covered, and any maintenance requirements to keep the warranties valid.

10. Wood Deck Replacement Costs

Ensuring Structural Integrity: In some cases, a roof replacement may reveal the need for a new wood deck. The proposal should include a detailed cost assessment for replacing any compromised wood decking to ensure the structural integrity of your roof.

Transparent Pricing: The proposal should provide a clear breakdown of materials and labor costs associated with the decking replacement, ensuring you have a complete financial picture before work begins.

Quality Materials: The proposal should specify the type of wood used, chosen for its durability and suitability for your roof’s specific needs, contributing to the overall longevity of your roofing system.

Final Thoughts On Your Roof Replacement Estimate

A detailed and well-explained roof replacement proposal is your roadmap to a successful project. It’s not just about the immediate results, but also about ensuring long-term protection and value for your home. At Impact Roofing & Renovations, we prioritize providing our clients with all the necessary information, including comprehensive warranty details, so they can make informed decisions with confidence.


Understanding each component of your roof replacement proposal, especially the warranties, is crucial. These details not only provide a clear picture of what to expect but also assure you of the quality and longevity of your investment. We encourage homeowners to engage with us in open dialogue to fully understand every aspect of their roofing project. Choose Impact Roofing & Renovations for a thorough, transparent, and dependable roofing experience.

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