A KEE membrane is a type of thermoplastic roofing membrane made with ketone ethylene ester (KEE), a high-performance polymer added to PVC-based roofing formulations. KEE roofing membranes are commonly used…
- August 14, 2026
What are the storage and shelf-life requirements for membrane rolls in Florida heat?
Roofing membrane rolls, including TPO, PVC, EPDM, and modified bitumen, must be stored correctly before installation to preserve their flexibility, surface condition, dimensional stability, and installation performance. This is especially…
Yes, recycled-content roofing membranes are available for commercial buildings, and many can deliver performance comparable to conventional roofing membranes when properly selected, installed, and maintained. For building owners looking for…
- August 14, 2026
What is plasticizer migration and how is it prevented?
Plasticizer migration is a common concern in certain commercial roofing systems, particularly those that use flexible PVC membranes. Understanding what plasticizer migration is, why it occurs, and how it can…
- August 14, 2026
How does membrane shrinkage affect flashings over time?
Membrane shrinkage is a common concern in commercial roofing systems, particularly on roofs with single-ply membranes such as TPO, PVC, or EPDM. Over time, membrane movement and shrinkage can place…
- August 14, 2026
What is membrane billowing and does it cause damage?
Membrane billowing is a common condition that can occur on low-slope and commercial roofs with single-ply roofing membranes such as TPO, PVC, and EPDM. It appears as raised, swollen, or…
Ridging or wrinkling in a mechanically attached commercial roof occurs when the roofing membrane develops raised lines, ripples, or folds instead of remaining flat and properly tensioned. While minor wrinkles…
- August 14, 2026
When should a fleece-back membrane be specified?
A fleece-back membrane should be specified when a commercial roofing project requires additional durability, improved puncture resistance, or a more robust surface for installation over challenging substrates. Fleece-back membranes are…
When choosing a commercial roofing membrane, property owners often compare fleece-back and smooth-back membranes. Both are available for common single-ply roofing systems such as TPO and PVC, but their construction…
- August 14, 2026
Can two different single-ply membrane types be tied together?
Yes, two different single-ply roofing membrane types can sometimes be tied together, but they should not be directly heat-welded or bonded together unless the manufacturers specifically approve that connection. A…