Roofing Systems
KEE.
The long-service premium choice.
What you choose when you want PVC’s chemical resistance without PVC’s long-term weakness. A leading manufacturer’s KEE membrane has been independently rated for a 40-year service life, the longest in the single-ply category.
Best For
Industrial facilities with sustained chemical or pollutant exposure; long-hold commercial buildings where 25–35 year service life is the goal.
Service Life
25-35+ years.
A leading manufacturer’s KEE membrane has been independently rated for a 40-year service life, the longest in the single-ply category. KEE is what you choose when you want PVC’s chemical resistance without PVC’s long-term weakness.
How It Works
Solid plasticizer chemistry that stays put.
Standard PVC contains liquid plasticizers that slowly leach out of the membrane over decades, gradually making the roof more brittle. KEE replaces that liquid plasticizer with a solid one that stays put, meaning a KEE roof keeps its flexibility, chemical resistance, and dirt-shedding properties longer than standard PVC. White KEE roofs hold their reflectivity longer, too, which means longer cooling-cost savings.
Operational Profile
Better dirt resistance. Longer reflectivity.
Moderate maintenance, minimal install disruption, low-to-moderate foot-traffic tolerance, high energy performance. Better dirt resistance than PVC means white membranes stay reflective longer.
What You Should Know
Not every roofer can install it.
KEE costs 10–20% more than comparable PVC, and not every roofer holds the manufacturer approval to install it. Before signing a bid, ask the contractor if they’re approved to install.
Where It Falls Short
Cost premium for short-hold buildings.
The math favors KEE when you’re holding the building long-term in a demanding environment, not for a five-year flip. For short-hold or low-exposure buildings, PVC will deliver comparable performance at lower cost.
Get Started
Right system for your building? Let’s confirm.
The right roofing system is decided by data, not preference. We start every engagement with a documented Roof Health Assessment so the recommendation is the right one for your building, your operation, and your hold horizon.