Keep Your Building Secure and Operational

Commercial Roofing in Onalaska for flat and low-slope systems facing leaks or membrane failure

Gilmore Roofing LLC provides commercial roofing services in Onalaska for property owners and managers who need reliable coverage over warehouses, retail buildings, and office complexes. You may see water pooling on the roof after rain, notice ceiling tiles stained or sagging inside, or find that your HVAC units are sitting in standing water. These conditions indicate that the membrane has failed, seams have separated, or drains are clogged, allowing moisture to penetrate the roof deck and compromise the building envelope.


This service includes inspection of the entire roof system, repair or replacement of damaged membranes, and installation of new roofing designed for long-term performance with minimal maintenance. Gilmore Roofing LLC works with flat and low-slope systems commonly found on commercial structures, using materials that resist UV exposure, thermal expansion, and ponding water. The crew schedules work to minimize disruption, often completing sections in phases so your business can continue operating without shutting down.


If your building is showing signs of roof failure or you want to prevent costly damage with a routine evaluation, contact Gilmore Roofing LLC for a commercial property assessment.

How Commercial Roof Repairs and Replacements Are Managed

The process starts with a full roof inspection that identifies problem areas, measures the slope, and checks the condition of flashing, penetrations, and drainage systems. You receive a detailed report with photos showing where the damage exists and what repairs or replacement sections are needed. Gilmore Roofing LLC provides a timeline that accounts for weather, material delivery, and your business hours.


During the work, old membrane is removed in manageable sections, and any wet or damaged insulation is replaced before the new system is installed. Seams are heat-welded or adhered according to the roofing system specifications, and all penetrations are properly sealed. After completion, you will notice that water drains cleanly, interior leaks stop, and the roof surface is uniform without bubbles or wrinkles.


Routine maintenance and inspection services are available to extend the lifespan of your roof and catch small issues before they require emergency repairs. This service does not include structural repairs to the building frame or replacement of HVAC equipment, though those needs will be noted if found during inspection.

Common Questions About Commercial Roofing Projects

Business owners and property managers often need clarity on how the work will be scheduled, what systems are best suited for their building, and how to avoid future problems.

What roofing systems are used on flat roofs?

TPO, EPDM, and modified bitumen are the most common, each offering different benefits in terms of cost, durability, and installation method.

How long does a commercial roof last?

A well-maintained flat roof system typically lasts fifteen to twenty-five years, depending on material type and exposure to weather.

When should you schedule roof work?

Plan for dry, mild weather and avoid peak business seasons if possible, as this reduces the chance of delays and allows for faster completion.

How do you prevent water pooling?

Proper slope, functional drains, and regular debris removal are essential to keep water moving off the roof surface.

Why does Onalaska see frequent roof issues on commercial buildings?

High heat, intense sun, and sudden storms can degrade roofing membranes faster, making routine inspections more important in this area.

Gilmore Roofing LLC understands the importance of keeping your building protected without interrupting daily operations. Reach out to discuss your roof's condition and schedule a time for evaluation that works with your business.