Commercial Roof Replacement in Mount Prospect and the Northwest Chicago Suburbs

Plan the Right Replacement for Your Commercial Property

A commercial roof replacement is a major building investment. The right plan should address more than the visible roofing membrane. It should account for the existing roof system, insulation, drainage, rooftop equipment, penetrations, building operations, long-term performance needs, and project budget.

Peterson Roofing provides commercial roof replacement for offices, warehouses, retail centers, light industrial buildings, churches, schools, associations, multi-tenant properties, and other facilities throughout Mount Prospect and the Northwest Chicago suburbs.

Our commercial roofing team evaluates the existing roof, explains the available options, and recommends a replacement system based on the building and actual roof conditions. Peterson Roofing has served Chicagoland property owners since 1978 and is fully licensed, bonded, and insured.

Commercial Roofing Contractor Mount Prospect IL

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When Should a Commercial Roof Be Replaced?

When Should a Commercial Roof Be Replaced?

One leak does not always mean a commercial roof needs replacement. Localized punctures, open seams, or damaged flashing may still be repairable when the surrounding system remains in serviceable condition.

Replacement may be more practical when leaks recur, deterioration is widespread, insulation is wet, drainage problems persist, previous repairs are failing, or the roof has reached the end of its useful life. Peterson Roofing evaluates the complete roof before recommending repair, maintenance, coating, re-cover, or tear-off and replacement. Learn more about commercial roof repair versus replacement.

Contact Us

Legal Name: Peterson Roofing, Inc.
Commercial/Residential Roofing Services
Year founded, 1978
Tax ID #36-3234016
IL Roofing License #104-002674

Affiliations
Member Chicago Roofing Contractors Association
Midwest Roofing Contractors Association
Better Business Bureau

Contact Peterson Roofing
Office Hours: Mon – Fri 7 a.m. to 4 p.m.
Phone (847) 590-5290
Fax (847) 590-5621

Business Operations and Warehouse
Peterson Roofing, Inc.
603 E. Kensington Rd.
Mount Prospect, IL 60056

A Replacement Recommendation Starts With the Existing Roof

Commercial roofs that look similar from the surface can have very different conditions below the membrane. Before developing a replacement plan, the existing assembly and building requirements must be understood. Depending on the property and roof system, the evaluation may consider the below. These findings help determine whether the existing roof can remain in place for a properly designed re-cover or whether removal is needed before the new system is installed.

When ownership needs documented information about the roof’s observable condition before making a major capital decision, a Professional Commercial Roof Inspection may be an appropriate starting point.

  • Existing membrane type and number of roof layers

  • Roof age, leak history, and previous repairs

  • Insulation and possible trapped moisture

  • Drainage patterns, drains, scuppers, and gutters

  • Flashing, penetrations, parapet walls, and perimeter details

  • Rooftop HVAC equipment and other mechanical systems

  • Roof access, staging, safety, and building operations

  • Applicable manufacturer and code requirements

Commercial Roofing Systems We Install

Peterson Roofing works primarily with TPO and EPDM roofing systems, along with modified bitumen and other flat and low-slope commercial roofing materials. The appropriate system depends on the roof configuration, deck, drainage, rooftop activity, building use, performance expectations, and budget.

Building owners comparing single-ply membrane options can review the differences between TPO and EPDM commercial roofing systems.

TPO Roofing Systems

TPO is a single-ply roofing membrane commonly used on commercial flat and low-slope roofs. Its seams are heat-welded to create a continuous roofing surface, and white TPO can help reflect a portion of the sun’s heat.

TPO systems may be mechanically fastened or adhered depending on the building, deck, wind requirements, and project design. Peterson Roofing has installed TPO systems on commercial roofs ranging from smaller properties to facilities covering tens of thousands of square feet.

EPDM is a flexible synthetic rubber membrane with a long history of commercial roofing use. It can be installed in different configurations and is often considered for flat and low-slope buildings requiring a durable membrane that performs through Chicagoland’s seasonal temperature changes.

The roof design, attachment method, membrane thickness, insulation, flashing details, and drainage conditions all influence the performance of an EPDM system.

Modified bitumen is an asphalt-based membrane reinforced and modified for added flexibility and durability. It is available in several application types and surface finishes, including granulated membranes.

Modified bitumen may be appropriate for certain smaller commercial roofs, roof sections, or properties where the existing assembly and building requirements support its use. Peterson Roofing evaluates the complete roof before recommending modified bitumen or a single-ply alternative.

Commercial roofs on a warehouse, office building, retail center, and religious facility in Chicagoland

Commercial Buildings We Serve

Different building types create different roof replacement priorities. Warehouses, distribution facilities, and light industrial or manufacturing properties may require careful protection of inventory, equipment, loading areas, and daily operations. Offices, professional buildings, retail centers, standalone stores, and multi-tenant properties often require work to be coordinated around employees, customers, tenants, and building access.

Peterson Roofing also replaces flat and low-slope roofs on churches, religious facilities, schools, institutional buildings, associations, managed properties, and other commercial facilities. When a building has roof sections with different materials, elevations, ages, or conditions, replacement may be completed in phases when the roof design and existing conditions allow.

Our Commercial Roof Replacement Process

Step 1

Roof and Property Evaluation

We begin by reviewing the existing roof, known leaks, previous repairs, drainage, rooftop equipment, access, and the building owner’s concerns. Additional investigation may be recommended when more information is needed about insulation, moisture, or the underlying assembly.

Step 2

Replacement Options and Proposal

Peterson Roofing explains the proposed scope, roofing system, attachment method, insulation or substrate considerations, flashing details, and other major project requirements. When more than one practical approach is available, we can explain the differences so the owner or property manager can compare the options.

Step 3

Project Planning

Before work begins, the project is planned around roof access, material staging, weather, safety requirements, tenant or employee access, and sensitive areas within the building. Clear planning helps reduce avoidable interruptions once the project is underway.

Step 4

Roof Preparation and Installation

The existing roof is prepared according to the approved scope. This may involve removing the existing assembly or preparing suitable existing materials for a re-cover. The new roof system, insulation, flashings, penetrations, perimeter details, and drainage transitions are then completed as specified.

Step 5

Final Review and Documentation

After installation, the completed work is reviewed, and applicable project documentation is provided. We can also discuss future commercial roof maintenance to help the owner monitor conditions and protect the new system.

Planning the Work Around Your Operations

A commercial roofing project often takes place while the building remains occupied and operational. Peterson Roofing considers how staging, equipment, deliveries, roof access, noise, debris, and changing weather may affect the property.

Before installation begins, building owners and property managers should identify critical operating hours, sensitive interior areas, tenant requirements, loading zones, and any upcoming events or production schedules. Sharing this information early allows the roofing team to build those priorities into the project plan.

Owners planning future capital work may also benefit from reviewing how to plan and budget for a commercial roof replacement.

Although some disruption is unavoidable during roof replacement, careful coordination can help protect employees, tenants, customers, inventory, equipment, and normal access to the property.

Commercial roof replacement coordinated around an active loading dock, employee entrance, and normal building operations

Recent Commercial Roof Replacement Projects

Peterson Roofing completes commercial roofing projects of different sizes, system types, and scopes throughout the Northwest Chicago suburbs and surrounding communities. The following projects demonstrate recent re-cover, mechanically fastened, adhered, TPO, and modified bitumen work.

Diverzify, Itasca, IL

Peterson Roofing completed this 90,000-square-foot commercial roof re-cover at 865 W. Irving Park Road in Itasca in May 2026. The project included the installation of a mechanically fastened roofing system using white 60-mil GAF TPO.

PROJECT DETAILS:
Job Name: Diverzify
Job Address: 865 W. Irving Park Rd., Itasca, IL
Materials: 60 Mil GAF TPO (White)
Completion Date: 05/2026
Project PDF: View the Diverzify Project Profile

Howard McAllister, Park Ridge, IL

Peterson Roofing completed this 4,600-square-foot commercial roof re-cover at 888 Busse Highway in October 2025. Its modified bitumen system provides a useful contrast to the TPO systems featured above.

PROJECT DETAILS:
Job Name: Howard McAllister
Job Address: 888 Busse Hwy, Park Ridge, IL
Materials: Granulated Modified Bitumen (White)
Completion Date: 10/2025
Project PDF: View the McAllister Project Profile

Contact Us

Legal Name: Peterson Roofing, Inc.
Commercial/Residential Roofing Services
Year founded, 1978
Tax ID #36-3234016
IL Roofing License #104-002674

Affiliations
Member Chicago Roofing Contractors Association
Midwest Roofing Contractors Association
Better Business Bureau

Contact Peterson Roofing
Office Hours: Mon – Fri 7 a.m. to 4 p.m.
Phone (847) 590-5290
Fax (847) 590-5621

Business Operations and Warehouse
Peterson Roofing, Inc.
603 E. Kensington Rd.
Mount Prospect, IL 60056

Does the Roof Need Replacement, Repair, or Restoration?

Not every aging or leaking commercial roof should be replaced immediately. The most practical option depends on the extent of deterioration, moisture conditions, remaining roof life, repair history, building plans, and budget.

A commercial roof repair may be appropriate when damage is isolated and the surrounding system remains dependable. A commercial roof coating may be considered when the existing roof is compatible, dry enough, properly prepared, and otherwise suitable for restoration. Ongoing maintenance may help a serviceable roof continue performing while the owner plans for future capital work.

When deterioration is widespread, insulation is wet, repairs are recurring, or the existing system has reached the end of its practical service life, replacement may offer the clearer long-term path. Read more about commercial roof coatings versus replacement.

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Local Commercial Roofing Experience Since 1978

Peterson Roofing has served Mount Prospect, the Northwest Chicago suburbs, and surrounding Chicagoland communities since 1978. Our trained crews have experience with TPO, EPDM, and modified bitumen systems, including tear-offs, re-covers, and phased commercial roofing projects.

Property owners and managers rely on Peterson Roofing for clear evaluations, practical recommendations, documented project experience, and planning that considers occupied and operating buildings. We are fully licensed, bonded, and insured.

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Commercial Roof Replacement Frequently Asked Questions

How do I know whether my commercial roof needs replacement?

The decision depends on more than roof age or a single leak. Peterson Roofing considers the roof system, membrane condition, moisture, insulation, drainage, flashing, previous repairs, leak history, and the owner’s long-term plans. Widespread deterioration, recurring leaks, wet insulation, or extensive unsuccessful repairs may indicate that replacement should be considered.

A tear-off removes existing roofing materials before the new system is installed. A re-cover installs a new roofing system over suitable existing materials after the roof has been evaluated and properly prepared. Existing layers, moisture, deck conditions, code requirements, added weight, and manufacturer specifications help determine which approach may be appropriate.

Peterson Roofing primarily works with TPO and EPDM systems, along with modified bitumen and other flat or low-slope roofing materials. The recommendation depends on the building, roof configuration, existing assembly, drainage, rooftop conditions, expected performance, and project budget.

Project length depends on roof size, system type, removal requirements, insulation or deck conditions, rooftop equipment, access, weather, and the complexity of flashing and perimeter details. Peterson Roofing reviews the anticipated scope and scheduling considerations before work begins.

Many businesses remain open, but the answer depends on the building and roofing scope. Roof replacement can create noise, vibration, odors, temporary access restrictions, and material-staging needs. Peterson Roofing works with the owner or property manager to identify operational concerns and plan the project around the property as reasonably as possible.

Major cost factors include total roof area, existing layers, tear-off requirements, roofing system, membrane thickness, insulation, deck repairs, flashing, roof edges, drainage, penetrations, rooftop equipment, access, staging, and warranty requirements. An on-site evaluation is needed to develop a project-specific proposal.

Get a Clear Commercial Roof Replacement Plan

You do not need to know which roofing system your building requires or whether a tear-off, re-cover, repair, or coating is the right solution before contacting Peterson Roofing.

Tell us about the property, roof concerns, recent leaks, previous repairs, and any timing or operational requirements. Our team can evaluate the roof, explain the available options, and help you plan an appropriate next step for the building.

Call (847) 590-5290

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