Hiring the wrong siding contractor can mean poor installation, water damage, and thousands in repairs down the road. With quotes ranging from $8,000 to $25,000+ for a full home re-side, comparison isn't optional—it's essential. This checklist walks you through vetting local contractors so you hire someone qualified, honest, and fair-priced.
Verify Licensing and Insurance
Your first move: confirm the contractor holds a valid state license and active general liability insurance. Ask directly for their license number and call your state's licensing board to verify it's current and clean of violations. Request a certificate of insurance and confirm coverage limits meet your state's minimums—typically $300,000 to $1 million for general liability on exterior work.
Siding installation leaves your home vulnerable during work. An uninsured contractor who damages your roof, windows, or landscaping becomes your financial headache. A single phone call takes two minutes and protects you completely.
Review Past Work and References
Ask for at least three recent projects (completed in the last 18–24 months) with before-and-after photos. Legitimate contractors keep photo portfolios readily available. Request homeowner contact information and actually call them—ask specific questions about workmanship, timeline adherence, and cleanup.
During the call, dig into the details: Did the crew show up on time? Were there unexpected costs? Did the siding hold up without gaps, nail pops, or premature fading? Did they paint trim properly, or leave caulk unpainted? These real-world insights reveal how the contractor operates day-to-day.
Check Google Reviews, the Better Business Bureau, and Yelp. Look for patterns in complaints—recurring issues like water leaks or poor communication are red flags.
Understand Pricing and Materials
Get three written quotes and break down what they include. Pricing varies wildly based on:
- Siding material: Vinyl ($3–8/sq. ft.), fiber cement ($8–15/sq. ft.), wood ($10–20/sq. ft.), or metal ($5–12/sq. ft.)
- Labor complexity: Square footage, number of stories, existing trim condition, and disposal costs
- Prep work: Removing old siding, repairing damaged sheathing, and window flashing all add cost
- Warranty: Labor warranties range from 2 to 10 years; material warranties from 10 years to lifetime
A quote that's 30% below others isn't a steal—it's often a sign of cheap materials or rushed installation. Conversely, the priciest quote isn't always the best.
Red flag: any contractor reluctant to provide a detailed, itemized estimate.
Ask About Installation Methods
Siding installation quality depends heavily on how it's done. Ask these specific questions:
- Do you nail or screw siding? (Screws resist uplift better in high winds)
- How do you handle window and door flashing? (Improper flashing is the #1 cause of water damage behind siding)
- What gaps do you leave for expansion? (Vinyl needs room to move—improper spacing causes buckling)
- Who handles caulking and trim? Is that included in the quote?
A knowledgeable contractor answers these without hesitation. Vague answers suggest the crew just follows a template without understanding the work.
Check Timeline and Guarantees
Ask for a realistic start and completion date. Full-home re-siding typically takes 2–4 weeks depending on size and weather. Get this in writing—delays happen, but you want clarity on what's reasonable.
Request a written warranty covering both materials and workmanship. Reputable contractors stand behind their work with at least a 5-year labor warranty. Anything less is weak protection.
Confirm they'll clean up daily and dispose of old siding properly. This keeps your property safe and prevents debris-related disputes.
Use Comparison Tools
Rather than hunting individual contractor websites one by one, platforms like Mercoly let you compare and find trusted siding installation and repair providers in one place, saving hours of research and vetting.
Frequently Asked Questions
Q: How long does new siding last? Vinyl lasts 20–40 years with proper maintenance; fiber cement 25–40 years; wood 20–40 years with regular painting; and metal 40–60+ years. Quality installation and climate matter significantly.
Q: Should I replace siding or repair it? Isolated damage (cracked boards, small holes, failed caulk) calls for repair; widespread issues, energy loss, or more than 30% affected area justify full replacement.
Q: Can siding installation happen in winter? Yes, but cold temperatures slow some adhesives and caulks. Most contractors work year-round; expect slightly higher costs in winter due to reduced availability.
Get three quotes, call references, and verify credentials—then hire with confidence.