Essential Credentials to Verify
Before hiring any contractor, verify these credentials:
Colorado requires roofing contractors to be licensed. Verify their license is current and covers the type of work you need.
The contractor should carry both liability insurance and workers' compensation insurance. Ask for a certificate of insurance.
Certified contractors (GAF, Owens Corning, CertainTeed) have specialized training and access to extended warranties. This is a mark of quality.
Check the Better Business Bureau for accreditation and complaint history. ABBB rating of A or A+ is ideal.
Ask for references from recent customers in your area. A local contractor should have a strong track record in your community.
Red Flags to Avoid
Watch out for these warning signs of unreliable contractors:
Contractors who knock on doors immediately after hail storms are often fly-by-night operators. They pressure homeowners into quick decisions.
Reputable contractors accept multiple payment methods. Cash-only deals often indicate tax evasion or lack of insurance.
If a contractor pressures you to sign immediately, it is a red flag. Good contractors give you time to decide.
Never hire a contractor who only offers verbal agreements. A written contract protects both parties.
Reputable contractors do not demand full payment upfront. A deposit of 10-30% is typical, with the balance due upon completion.
Be wary of contractors who only have a PO Box or no physical address. This makes it difficult to hold them accountable.
Questions to Ask Before Hiring
Ask these questions during your consultation:
Established contractors have proven track records and financial stability.
Ask for photos or addresses of recent projects similar to yours.
Reputable contractors offer workmanship warranties (1-10 years) in addition to manufacturer material warranties.
Reputable contractors pull all required permits. This ensures the work meets local building codes.
Know who your point of contact will be and how they communicate progress.
Good contractors use magnetic nail sweepers and remove all debris from your property.
Comparing Estimates
Getting multiple estimates is essential, but price is not the only factor:
Each estimate should include materials, labor, timeline, cleanup, and warranty terms. Vague estimates are red flags.
Estimates should specify exact shingle types, underlayment, flashing materials, and ventilation products. This prevents substitution with inferior materials.
If one estimate is significantly lower than others, ask why. The contractor may be cutting corners on materials, labor, or insurance.
Compare payment schedules. Avoid contractors demanding more than 30% upfront.
Compare project timelines. Unrealistically short timelines may indicate rushed work.
What Your Contract Should Include
A written contract protects both parties. Ensure it includes:
Detailed description of all work to be performed, including materials, methods, and cleanup.
Exact products, colors, and brands to be used.
Deposit amount, progress payments, and final payment upon completion.
Start date, estimated completion date, and weather delay provisions.
Workmanship warranty duration, manufacturer warranty details, and claim procedures.
Who pulls permits and schedules inspections.
How debris will be removed and property protected.
Frequently Asked Questions
How much should a roof replacement cost in Denver?
Most Denver homeowners spend $8,000-$15,000 for architectural asphalt shingles on a typical 2,000 sq ft home. Metal roofing costs $14,000-$25,000. Get multiple estimates and compare details, not just price.
Do I need a permit for roof replacement in Denver?
Yes, most Denver-area municipalities require permits for roof replacement. Reputable contractors pull permits as part of their service. If a contractor says permits are not needed, verify this with your local building department.
How long does a roof replacement take?
Most residential roof replacements in Denver are completed in 1-3 days. Metal roofs may take 2-5 days. We provide a detailed timeline during the estimate phase.
What warranty should I expect from a roofer?
Reputable contractors offer workmanship warranties (1-10 years) in addition to manufacturer material warranties (20-50 years). The workmanship warranty covers installation errors, while the manufacturer warranty covers material defects.