A new roof installation is your chance to get everything right from the start. No compromises, no working around someone else's mistakes. Cornish Roofing & Maintenance installs new roofing systems on new homes, additions, detached garages, carports, and covered patios throughout Cornish.
Our New Roof Installation Process
Project Planning
Meet with our Cornish project coordinator to select materials, review color options, and confirm the installation scope. We work with your GC or architect to ensure the roof spec meets the overall building design.
Pre-Installation Setup
Materials delivered and staged on-site the day before installation. Shingle pallets, underlayment rolls, flashing stock, ridge vent, and fasteners, everything confirmed against the project spec sheet.
Professional Installation
Installation follows IRC building code and manufacturer requirements. Proper overlap, correct fastener patterns, sealed penetrations, and balanced ventilation. Our crews are factory-trained and know the installation manuals by heart.
Final Inspection
After installation: quality inspection, building department sign-off, manufacturer warranty registration, and cleanup. Your new roof is warranted from the day it passes inspection.
What Cornish Customers Say
"From the first phone call to the final walkthrough, everything was seamless. The team was courteous and efficient. Already recommended them to two friends."
"After getting several quotes, these guys stood out with their honesty and knowledge. No pressure, just straightforward advice and excellent workmanship."
"We called expecting to wait days, but they were here the same afternoon. Fair pricing, quality work, and they kept us informed every step of the way."
Why Choose Cornish Roofing & Maintenance for New Roof Installation?
Material Selection Guidance
Shingles, metal, flat systems. We install all of them and help you choose based on your budget, design, and the demands of NH climate.
Ventilation Design
We calculate intake and exhaust per IRC R806 for every new install. Balanced ventilation extends roof life and cuts energy costs. Most contractors skip this step.
Full Manufacturer Warranty
Factory-certified installation means your new roof warranty is fully backed from day one. No gaps, no exclusions from improper installation.
Builder Coordination
We work directly with your GC on scheduling, staging, and inspections. On-time delivery and clean work that doesn't slow down the rest of the build.
About Our Cornish New Roof Installation Services
Whether it's GAF Timberline HDZ, Owens Corning Duration, CertainTeed Landmark, or a standing seam metal system, our Cornish crews install it the way the manufacturer requires. Factory-certified installation means your warranty is fully backed from day one.
Typical new roof installation in Cornish takes 1-3 days depending on size and complexity. We coordinate with your builder on scheduling, material delivery, and inspection timing. Materials are staged on-site the day before install to keep the project on schedule.