Commercial Roofing
Install. Restore. Protect.
Commercial roofing is Terrapin Construction Group's newest self-performing specialty, delivered with national scale and an owner-first mindset. From full metal roof systems to fluid-applied restoration that can save owners up to 80 percent versus a full replacement, TCG protects your investment for decades, with roof, wall, and structure coordinated through in-house IMP and envelope expertise. Projects completed in 38 states, licensed in all 50.
Commercial roofing costs $4 to $25 per SF depending on the system: roughly $4 to $8 for FlexRock fluid-applied restoration, $6 to $12 for TPO or EPDM single-ply, $8 to $14 for PVC, $10 to $18 for standing seam metal, and $12 to $25 for IMP roof panels. Full tear-off adds $2 to $5 per SF in demolition and disposal that restoration eliminates. TCG self-performs roofing alongside IMP walls, PEMB, and flooring, so the whole envelope is coordinated under one contract, and a FlexRock restoration can save up to 80 percent versus replacement.
Last updated: July 21, 2026 • Reviewed by TCG RoofingCommercial Roofing Cost Estimator
Describe your roofing project and get a preliminary cost estimate powered by TCG.ai, the same engine behind our general construction estimator and IMP estimator.
Analyzing Your Roofing Project
Our AI engine is reviewing roofing material costs, labor rates, and restoration vs. replacement options…
Why Owners Choose TCG for Commercial Roofing
Most commercial roofing contractors only do roofing. TCG is a full-service general contractor and design-build firm that also self-performs roofing, so your roof is coordinated with the entire building envelope, MEP systems, and structural design from the start. That eliminates the sequencing gaps between roof, wall, and structure that cause leaks and warranty disputes.
Restore or Replace: What the Money Looks Like
The single most valuable decision on an aging commercial roof is restore versus tear-off. On a 100,000 SF roof, the gap is enormous. Drawn to scale, with real per-SF costs:
Reading the chart: on a 100,000 SF roof, restoration keeps roughly $600K to $1.2M in the owner's pocket while the building keeps operating. When the deck is sound and active leaks cover less than 25 percent of the roof, FlexRock restoration is almost always the better economic call. Full cost breakdown: commercial roofing cost per SF.
FlexRock Coatings: Fluid-Applied Reinforcement
TCG partners with FlexRock Coatings, a veteran-owned, Denver-based manufacturer of eco-friendly, high-performance fluid-applied sealant and roofing systems. FlexRock's proprietary FX-100 technology is transforming commercial reroofing by eliminating costly, disruptive full tear-off replacements. Traditional replacement means tearing off the membrane, hauling it to a landfill, and installing new, at $8 to $15 or more per SF, disrupting operations for weeks. FlexRock restores and waterproofs the existing roof in place, at a fraction of the cost and timeline.
Learn more about FlexRock's commercial roofing products at flexrockcoatings.com.
Commercial Roofing Systems and What They Cost
Commercial roofing runs $4 to $25 per SF installed, driven by the system. Restoration is the low end, IMP roof panels the high end. Full tear-off and replacement adds $2 to $5 per SF in demolition and disposal, cost that FlexRock restoration eliminates entirely.
| System | Installed Cost / SF | Service Life | Best For |
|---|---|---|---|
| FlexRock Restoration | $4 to $8 / SF | Adds 15 to 25+ yrs | Sound decks, mixed-material and aging roofs, occupied buildings |
| TPO Single-Ply | $6 to $12 / SF | 20 to 30 yrs | Office, retail, institutional, energy savings |
| EPDM (Rubber) | $6 to $12 / SF | 20 to 30 yrs | Large warehouse and industrial, cold climates |
| PVC Single-Ply | $8 to $14 / SF | 25 to 35 yrs | Restaurants, food processing, grease-laden exhaust |
| Standing Seam Metal | $10 to $18 / SF | 40 to 60+ yrs | Architectural roofs, high wind uplift, PEMB pairing |
| IMP Roof Panels | $12 to $25 / SF | 30 to 50 yrs | Cold storage, CEA, best-in-class thermal performance |
| Tear-Off + Disposal (adder) | Add $2 to $5 / SF | N/A | Required for replacement, eliminated by restoration |
Choosing between the two most common single-plies? See TPO vs. EPDM for 2026. For envelope waterproofing detail, read the IMP joint detailing guide. Whole-building context lives in the master cost guide, and any competing roofing bid can run through the free Bid Review tool.
Our Commercial Roofing Process
Commercial Roofing Systems We Install
Industries We Serve
TCG's commercial roofing covers every building type that needs a high-performance roof:
And in the metros where owners search for commercial roofing most:
Roof, Wall, and Structure Under One Roof
TCG partners with leading roofing material manufacturers and our strategic partner FlexRock Coatings so every project benefits from advanced material science, comprehensive warranties, and reliable supply chains. As part of our integrated design-build delivery, roofing is coordinated with MEP systems, building envelope, structural design, and equipment installation, eliminating sequencing conflicts and ensuring a watertight, code-compliant building from day one. TCG is one of the few commercial contractors that self-performs roofing, IMP walls, PEMB, and commercial flooring under a single contract.
Go Deeper: TCG's Roofing and Cost Library
Commercial Roofing Questions, Answered
Still have questions? Visit the general FAQ, contact TCG, or schedule a free roof assessment.
TCG installs TPO, EPDM, PVC, modified bitumen, standing seam metal, insulated metal panel (IMP) roof systems, and FlexRock fluid-applied reinforcement restoration systems. We handle both new construction and reroofing or restoration projects.
Commercial roofing costs range from $4 to $8 per SF for fluid-applied restoration (FlexRock), $6 to $12 per SF for TPO or EPDM single-ply, $8 to $14 per SF for PVC, $10 to $18 per SF for standing seam metal, and $12 to $25 per SF for IMP roof panels. Full tear-off and replacement adds $2 to $5 per SF in demolition and disposal costs that FlexRock restoration eliminates entirely. Use our free AI estimator on this page for project-specific pricing.
FlexRock Coatings is a fluid-applied reinforcement roofing system that restores existing commercial roofs in place, without tear-off, landfill disposal, or full membrane replacement. The product chemically bonds to the existing substrate, fills cracks and defects, and creates a monolithic waterproof membrane. By eliminating tear-off labor, disposal costs, and new membrane material, owners save up to 80 percent compared to full replacement on large roofs.
FlexRock bonds to virtually any commercial roof substrate: metal, asphalt, TPO, EPDM, PVC, modified bitumen, BUR (built-up roofing), fiberglass, concrete, and wood. This makes it ideal for aging roofs with mixed materials or multiple previous repair layers.
Yes. FlexRock is zero VOC, virtually odorless, and plant-based, making it safe for application on occupied buildings including medical facilities, hotels, retail centers, and food production facilities. There is no need to vacate the building during application.
TPO and EPDM: 20 to 30 years. PVC: 25 to 35 years. Standing seam metal: 40 to 60+ years. IMP roof panels: 30 to 50 years. FlexRock restoration extends existing roof life by 15 to 25+ years depending on substrate condition and application thickness. Proper maintenance programs significantly extend all roof lifespans.
If the existing membrane has structural integrity and less than 25 percent of the roof area shows active leaks or saturated insulation, restoration with FlexRock is likely the most cost-effective option, saving up to 80 percent versus replacement. If insulation is widely saturated or the deck is compromised, full replacement may be necessary. TCG provides free roof assessments with core sampling to make a data-driven recommendation.
Yes. TCG is one of the few commercial contractors that self-performs roofing, IMP wall panels, PEMB erection, and commercial flooring under one contract. This eliminates the coordination gaps between roof, wall, and structure that cause leaks and warranty disputes on conventionally bid projects.
Yes. FlexRock is made with plant-based oils, natural minerals, and hemp fiber reinforcement. It is zero VOC and virtually odorless. By restoring roofs in place rather than tearing them off, FlexRock eliminates millions of square feet of roofing waste from landfills annually, making it one of the most sustainable commercial roofing solutions available.
Run the AI estimator on this page for a preliminary number, schedule a free roof assessment on Calendly, or email info@terrapincg.com with your roof size, building use, and current roof condition. TCG performs core sampling and moisture analysis, then returns a proposal comparing restoration and replacement options with a clear recommendation.
Let's Talk About Your Roofing Project
Whether you need a new commercial roof, a cost-saving FlexRock restoration, or an expert assessment of your existing roof, TCG has the national reach and building envelope expertise to deliver. Stop spending millions on full tear-offs when a restoration could save you up to 80 percent. Learn more about TCG or join the referral program.
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