45 YEARS OF
COMMERCIAL ROOFING

100,000 ROOF LEAKS FIXED
24,000 ROOFS INSTALLED
50 PEOPLE ON STAFF

Commercial roof replacement and repairs are done by experienced roofing technicians. We offer the industry’s most comprehensive customer support, installation and commercial roof repair services since 1978.

  • Commercial Roofing Safety

    This innovative system protects both the crew and the roofing membrane by utilizing "non-penetrating" anchors that stay on the surface during normal work but instantly deploy hidden spikes to grip the roof if a worker falls.

  • Robotic Test Welding

    Performing robotic test welds ensures proper equipment settings, which prevents future roof leaks and interior damage by verifying that the material bond is strong enough.

  • Working with others

    While remodel projects allow for self-scheduling, new construction requires meeting strict contractor deadlines and coordinating with various trades to ensure a peaceful and productive job site.

  • Commercial TPO

    TPO rolls are robotically fused using heat-welding, with specialized T-patches applied to reinforce and protect vulnerable overlap joints.

Churches, Schools, Retirement, Restaurants

Every customer is unique. So Is every roofing project. Churches may have certain worship days that require special work hours. Restaurants may require special roofing material that wont react with the cooking oils used. At Hamstra, we've seen it all and we're standing by, ready to help.

Single Ply

Long gone are the days of built up roofs and hot tar kettles. Current roofing materials are mostly single ply membranes, which means exactly that; one layer thick. They require specialized equipment to be able to install and weld, but are well worth it. They are lighter weight, easier to repair, and extremely energy efficient.

Commercial Roof Repairs & Maintenance

We are capable and certified for almost all types of roof repairs. Our service vehicles are loaded with everything we may need, and our service techs run on a app based program, for real time, in-the-field scheduling.

Certificates

Have a real estate deal hinging on an old roof? Do you have standing water issues? Would you like a ventilation or heat loss assessment? Our infrared heat guns, moisture meters, laser transits, and mapping capabilities can give you the answers you are looking for. Let us know how we can help.

How it works

  • Bid Process

    Give us a call, send an e-mail with a request/invitation to bid, or contact us through pro-cor or building connected. When we receive your request, we will review the prints and scope and get back to you with an honest quote and any value engineering you request.

  • Pre-Construction

    We review and sign contracts, send insurance and licensing documents, overnight submittals and shop drawings and finalize schedules. We make sure everyone is on the same page long before construction begins to make sure your project stays on schedule.

  • Construction

    We come out with our team of highly trained roofers to complete your project on schedule. Any changes requested can be fulfilled with a change order signed in the field - no paperwork delays.

    Our employees are safety focused, OSHA trained, and certified to run all of our lifts and equipment.

  • Post Production

    We have a final walk through, request final inspections from the municipality and material manufacturer. After our perfect score is achieved for warranty purposes, final closeout documents will be sent.

MONTHLY PAYMENT OPTIONS

60 second pre-qualification · Does not affect credit score

Hamstra has partnered with Hearth so we can help you find financing options that best fit your needs.

Multiple financing options

We work with 17 lenders to find competitive personal loans and credit cards for your needs

Simple pre-qualification

Our process takes less than 2 minutes and will not affect your credit score.

Personalized options

Hearth’s lending partners can provide multiple options tailored to your needs.

Financing Calculator

Who Are We?

Commerical Roofing Stories

Hamstra's Revitalization of the Historic Caterpillar Equipment Plant in Joliet, Illinois

Hamstra takes center stage in the architectural preservation scene with its latest project, the roof restoration of the iconic old Caterpillar equipment plant in Joliet, Illinois. On a chilly November morning, our team, led by our commercial project manager Tim Shankle, embarked on a meticulous journey to replace the aged roofing system of this historic structure. The project began with an in-depth assessment of the existing tar and gravel roof, a testament to traditional construction methods.

Two Decades of Durability: Hamstra's Reflections on Roof Longevity and Efficient Replacement Strategies

Twenty years ago, Hamstra set a benchmark in the roofing industry by installing a roof that stood the test of time. Today, as we embark on the replacement of this very roof, we take a moment to reflect on the journey and the advancements in roofing technology that have shaped our approach.