
TPO Commercial Roofing Contractor in NH
Commercial Roofing for Warehouses, Offices, Schools & Industrial Buildings
Queen City Roofing is a trusted installer of TPO commercial roofing systems for flat- and low-slope roofs on commercial and industrial buildings in New Hampshire. Whether you need a new or replacement roof, you can count on our factory-trained, licensed, and insured roofers. We offer over 20 years of experience and some of the industry's best warranties.
Factory-Certified Roof Installers
Locally-Owned, Family-Operated Business
20+ Years of Proven Experience
Quality Materials and Craftsmanship
Unparalleled Service
Worry-Free Extended Warranties

TPO Roofing for Flat & Low-Slope Commercial Properties
Durable, Energy Efficient, Cost-Effective
TPO (Thermoplastic Polyolefin) roofing is a single-ply roofing membrane commonly used on flat and low-slope commercial roofs. Made from a blend of polypropylene and ethylene-propylene rubber, it is a flexible yet durable material that provides long-term weather protection and energy efficiency.
TPO is manufactured in rolls and installed in wide sheets across the roof surface. Its seams are heat-welded, creating a strong, watertight bond that significantly reduces the risk of leaks.
Its white reflective surface is resistant to ultraviolet (UV) rays, ozone, dirt buildup, and algae growth. Because it reduces heat absorption, TPO helps lower a commercial property’s cooling costs during hot weather.
New Hampshire’s varying climate is hard on commercial roofs. When properly installed, a low-maintenance TPO roofing system can last 25 to 30+ years.
Flexible, crack-resistant membrane
Low maintenance
Heat-welded seams for watertight protection
Resists dirt, algae growth & pollution
Energy-efficient
Sustainable (100% recycle)

TPO Commercial Roofing Services:
TPO Roof Installation
We install quality TPO membrane roofing systems for new commercial construction and building expansions.
TPO Roof Replacement
We provide complete tear-off and replacement services for aging or failing flat or sloped roofs, using only the highest quality materials.
TPO Roof Repair
We quickly and efficiently address roof membrane damage, seam separation, flashing issues, and storm-related wear.
TPO Roof Maintenance
We offer routine inspections and proactive maintenance to extend the life of your commercial TPO roof and reduce costly emergency repairs.
Our Commercial Roofing Process
Queen City Roofing follows a time-proven commercial roofing process to ensure safety, precision, and long-term performance:
Commercial Roof Inspection
We perform a comprehensive on-site evaluation of your flat or sloped roofing system to assess its overall condition.
Detailed Proposal & Transparent Pricing
We provide a project estimate detailing the scope of work, materials, and timeline, and we answer any questions you may have.
Professional TPO Installation
We install your new roofing system using the highest-quality materials in accordance with manufacturer's specifications.
Final Quality Inspection
We verify seam integrity, drainage performance, and system completion before leaving your property.
Ongoing Maintenance & Support
We offer maintenance programs to protect your investment year-round.
Frequently Asked Questions About TPO Roofing
The only way to know if your commercial roof needs replacement or repairs is to schedule an inspection with an experienced, industry-certified roofing contractor like Queen City Roofing. If you have an older roof or notice signs of trouble (e.g., wall or ceiling leaks or missing roofing materials), our team is happy to take a look at no charge.
With proper installation, TPO roofing systems can last 25 to 30 years.
Yes. Its reflective membrane reduces heat absorption and improves energy performance, reducing your energy costs.
Absolutely. TPO membranes remain flexible in cold temperatures, resisting damage from seasonal freeze-thaw cycles.
Get a Free TPO Commercial Roofing Estimate in New Hampshire
Queen City Roofing proudly serves commercial clients throughout New Hampshire with expert roof installation, repair, maintenance, and replacement services. Contact our team today to request a TPO commercial roofing consultation.
Sophisticated Styling
Unlike standard three-tab shingles, architectural shingles mimic more sophisticated roofing styles like tile, shake, and slate.
Enhanced Durability & Wind Resistance
Constructed for enhanced durability and wind resistance, our roofing solutions provide superior protection from New Hampshire’s harshest elements.
Backed by Extended Warranties
We only install the nation’s top brands, including GAF, Owens Corning, CertainTeed, and IKO. Every installation is backed by an industry-leading extended warranty.


