Commercial Roof Replacement in St. Louis

CGR Legacy Construction replaces aging and failing commercial roofing systems across St. Louis. We help businesses plan and install roofing systems built for durability, performance, and long-term protection.

When Repairs Aren’t Enough Anymore

Over time, commercial roofing systems wear down from exposure, weather, and use.

At a certain point, repairs become:

That’s when replacement becomes the better long-term solution.

Signs You May Need Commercial Roof Replacement

Repair or Replace Your Commercial Roof?

Repair

isolated issues, early-stage damage

Replace

widespread damage, aging system, repeated failures

We help you evaluate your roof condition and make the right decision.

Commercial Roof Replacement Done Right

Our replacement process focuses on performance and durability.

Remove existing roofing system

Inspect underlying structure

Install new roofing system

Ensure proper drainage and sealing

We tailor each project to your building and operational needs.

Why Businesses Choose CGR Legacy

Clear, honest recommendations

Focus on long-term performance

Clean, organized project execution

Experience with commercial systems

Local St. Louis service

Our Commercial Roof Replacement Process

Schedule inspection

Evaluate roof condition

Develop replacement plan

Schedule project timeline

Complete installation

Final walkthrough

Plan Your Commercial Roof Replacement

If your roof is nearing the end of its lifespan, the best next step is a professional inspection.

Choosing the Right Replacement System

Not every commercial roof should be replaced with the same system. The right choice depends on your building, how the roof is used, and how long you plan to hold the property.

TPO – A reflective single-ply membrane, often chosen where heat reflectivity matters.
EPDM – A proven rubber membrane known for durability and straightforward repairs.
Modified bitumen – A layered asphalt-based system that holds up well to foot traffic.
Built-up roofing – Traditional multi-layer construction still appropriate for certain buildings.

We walk you through the realistic trade-offs in lifespan, maintenance, and cost rather than pushing a single option.

Tear-Off or Recover?

A recover installs a new membrane over the existing one. It costs less and moves faster, but it is only appropriate when the assembly underneath is sound and completely dry. If moisture has reached the insulation, covering it traps the problem and shortens the life of the new roof.

A full tear-off removes everything down to the deck, allowing us to inspect and repair the structure before anything new goes on. During your inspection we will tell you honestly which situation your roof is in.

What Drives the Cost and Timeline

Square footage and overall roof complexity
System selected and insulation requirements
Tear-off versus recover
Deck condition and any structural repairs needed
Penetrations and details – curbs, drains, skylights, and parapet walls all add labor

You will get a clear, itemized estimate before work begins, so there are no surprises mid-project.

Keeping Your Business Running

A replacement is disruptive when it is not planned well. Where possible we schedule around your operating hours, stage the work in sections so the building stays usable, keep access routes and parking clear, and manage debris so the property stays safe and presentable throughout the job.

Storm Damage and Insurance

If wind or hail contributed to the failure, part of the replacement may be claimable. We document conditions thoroughly and can support your claim – see Storm Damage Inspection and Insurance Claims Assistance.