The Roof Buying Guide
Everything a homeowner needs to know before replacing a roof, from cost factors to the exact timeline after you sign.
What Determines the Cost of a Roof
Six factors that shape every roofing estimate.
Roof Size
Measured in "squares" (100 sq ft each). More squares means more material and labor.
Material Quality
Basic 3-tab shingles cost less than architectural or premium designer shingles.
Roof Pitch
Steep roofs require more safety equipment and labor time, raising the price.
Tear-Off vs. Overlay
Removing old layers costs more upfront but is required for a proper, warrantied install.
Warranty Level
Manufacturer system warranties cost more than standard material-only warranties.
Ventilation & Accessories
Ridge vents, flashing, and starter courses add cost but protect your investment.
How to Compare Roofing Estimates
Line up every quote against this checklist before deciding.
- Full scope of work, not just a total price
- Exact materials and manufacturer named line by line
- Tear-off vs. overlay clearly stated
- Warranty terms: material only or full system warranty
- Proof of licensing and insurance
- Cleanup and debris removal included
- Written timeline for start and completion
- Payment schedule and deposit terms
Questions to Ask Every Contractor
- Are you licensed and insured in this state?
- What manufacturer certifications do you hold?
- Will this be a tear-off or an overlay?
- What warranty comes with this specific package?
- Who is the crew, your employees or subcontractors?
- What is the payment schedule?
Red Flags to Watch For
- Demands full payment upfront
- No local address or verifiable reviews
- Pressures you to sign the same day
- Storm-chasing door knockers with no references
- Quote is vague on materials or scope
- Cannot provide proof of insurance on request
What Affects Roof Lifespan
The same shingle can last 15 years or 30, depending on these factors.
Material Quality
Premium architectural shingles simply outlast basic 3-tab shingles.
Attic Ventilation
Balanced intake and exhaust airflow prevents heat and moisture damage from within.
Installation Quality
Correct nailing, flashing, and sealing determine whether a roof reaches its full rated life.
Climate & Weather
Sun exposure, humidity, and storm frequency all accelerate wear.
Roof Slope
Steeper roofs shed water faster and typically last longer than low-slope roofs.
Roof Replacement Timeline
Exactly what happens after you sign.
Consultation
We walk the roof, discuss packages, and answer every question.
Measurements
Precise satellite and on-site measurements confirm exact material needs.
Material Ordering
Your chosen CertainTeed system is ordered and scheduled for delivery.
Scheduling
We confirm a firm installation date around your schedule.
Installation Day
Your crew tears off the old roof and installs the full new system.
Cleanup
Magnetic nail sweep and full debris removal, leaving the property spotless.
Final Walkthrough
We inspect the finished roof with you before calling the job complete.
Warranty Registration
Your manufacturer warranty is registered and documentation is provided.
Roof Investment Calculator
Get a rough sense of your investment range in seconds.
Your Estimated Investment Range
$11,400 - $14,500
This is a rough estimate for planning purposes only. Final pricing requires an in-person inspection and measurement of your specific roof.
Roofing Glossary
Common roofing terms explained in plain English.
Roof Square
A unit of measurement equal to 100 square feet of roof area, used to calculate materials and pricing.
Ridge
The highest horizontal line where two roof slopes meet at the peak.
Valley
The V-shaped internal angle where two roof slopes meet, channeling water off the roof.
Decking
The plywood or OSB sheathing nailed to the trusses that forms the structural base of the roof.
Underlayment
A water-resistant layer installed over the decking and beneath the shingles for added protection.
Ice and Water Shield
A self-sealing waterproof membrane installed at eaves, valleys, and penetrations to stop ice dams and leaks.
Starter Shingles
The first course of shingles installed along the edges to lock down the field shingles and resist wind.
Ventilation
The system of intake and exhaust vents that keeps attic air moving to protect the roof and reduce energy costs.
Flashing
Metal installed at joints, walls, and penetrations to redirect water away from vulnerable seams.
Drip Edge
A metal edging installed along roof perimeters that directs water into the gutters.