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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

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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)

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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.

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Service Area

We proudly service homeowners and businesses throughout New Hampshire’s Lakes Region, with offices in Sunapee, Meredith, and Wolfeboro.

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