Complete Tear Off, Reconstruction, and Long Term Roofing Systems
Commercial roof replacements are necessary when the existing roof can no longer be restored and the structural components require a full rebuild. We replace roofs on warehouses, industrial plants, manufacturing facilities, schools, agricultural structures, medical buildings, and large commercial properties across Illinois and Iowa. When a roof has saturated insulation, widespread membrane failure, structural deterioration, or long term leak damage, replacement is the safest and most cost effective path forward.
A full replacement removes all damaged materials and allows us to rebuild the roof with upgraded insulation, improved drainage, structurally sound decking, and a new high performance system such as TPO, EPDM, PVC, metal, or spray foam. For a breakdown of available system types, visit Membrane Systems, Metal Roofs, Spray Foam Systems, or Roof Coatings. To see the full range of solutions we offer, view the Services page.
For replacement guidelines and national installation standards, refer to the National Roofing Contractors Association.
Why Buildings Need Commercial Roof Replacements
Commercial roof replacements are recommended when the roof has conditions that restoration cannot correct, including:
- Widespread water intrusion
- Saturated or damaged insulation
- Structural movement or deteriorated decking
- Membrane shrinkage or brittleness
- Heavy corrosion on metal systems
- Repeated leaks across large areas
- Damage caused by years of expansion and contraction
If you are uncertain whether your roof qualifies for restoration or replacement, the Roof Coatings and Metal Roofs pages provide detailed comparisons.
Our Commercial Roof Replacement Process
Roof Removal and Tear Off
We remove the existing membrane, coatings, fasteners, insulation, and any damaged decking. Our team protects the building interior during this stage to prevent water or debris intrusion.
Deck Inspection and Repairs
Structural issues are corrected before we install new materials. This includes replacing rotten decking, correcting slope issues, and securing loose components.
Insulation Upgrades
Replacement is the best time to improve energy performance. We install new insulation to meet modern standards and reduce heating and cooling costs.
Installation of the New Roof System
We install the chosen system, which may include TPO, PVC, EPDM, metal, or spray polyurethane foam. System selection depends on building use, budget, climate, and long term goals.
Flashing, Edge Work, and Drainage Improvements
Details matter. We ensure all seams, terminations, curbs, and drainage paths are installed correctly.
Final Inspection and Documentation
We provide detailed documentation showing the work completed, materials used, and maintenance recommendations.
For examples of replacement projects, browse the Projects gallery.
Choosing the Right Roofing System for Your Replacement
Commercial roof replacements can include:
TPO, EPDM, or PVC Membranes
Ideal for flat and low slope roofs. Durable, cost efficient, and long lasting.
Metal Roofing Systems
Strong for industrial buildings that require longevity and structural integrity.
Spray Foam Roofing
Provides insulation, seamless waterproofing, and can reduce long term energy costs.
To compare these systems, visit Membrane Systems, Metal Roofs, and Spray Foam Systems.
Is Replacement Really Necessary?
Replacement is the best option when:
- The roof continues to fail even after repairs
- The structure is compromised
- The membrane is too brittle or shrunken to restore
- Insulation is soaked and no longer functional
- The existing system has exceeded its lifespan
- Widespread moisture intrusion is present across large sections of the roof system
If your roof may still qualify for restoration, review Roof Coatings and Spray Foam Systems.
To see which systems perform best in your part of the Midwest, check our Service Areas page.
Comprehensive Commercial Roofing Solutions
From emergency repairs to complete restoration, we provide the right system and services for every stage of your commercial roof’s lifecycle.
Commercial Roof Repair
Commercial Roof Coatings
Spray Foam Roofing
Membrane Systems
Metal Roofing
FAQs
How do I know if I need a commercial roof replacement?
How long does a commercial roof replacement take?
What roofing systems can you install during a replacement?
Will my business need to shut down during the replacement?
Contact Us
Need a professional evaluation to determine if your roof needs a full replacement? Contact Big River Roofing to schedule an inspection.
Smithshire, IL