Fleece‑backed single‑ply membranes have become a go‑to solution for commercial roofing projects that demand added durability, impact resistance, and installation flexibility. Johns Manville’s fleece‑backed TPO and PVC membranes are engineered to address these needs, delivering long‑term performance on challenging rooftops and in demanding environments, including projects requiring FM Very Severe Hail (VSH) ratings. When paired with JM QuickFoam^® Roofing Adhesive, these systems provide a high‑performance, fully adhered solution designed for reliability and productivity.

What Sets Fleece‑Backed Membranes Apart

Unlike standard smooth‑back single‑ply membranes, Johns Manville fleece‑backed TPO and PVC feature a polyester fleece layer laminated to the underside of the membrane. This added layer improves puncture and impact resistance, enhances durability in high‑traffic areas, and allows the membrane to conform more easily to minor substrate irregularities. The fleece also supports adhesion to a wide range of approved substrates, making installation more forgiving and adaptable.

When Should Contractors Choose a TPO or PVC Fleece Backed Roofing System?

Contractors often choose fleece‑backed systems for projects where performance and resilience are priority considerations. These membranes are ideal for re‑cover applications, roofs with rough or uneven substrates, high‑wind zones requiring fully adhered assemblies, and facilities with frequent rooftop access. Fleece‑backed systems also perform well in hail‑prone regions and cold‑weather installations where traditional adhesives may be challenged.

JM TPO fleece‑backed membranes are commonly selected for energy‑efficient buildings that benefit from reflective roofing systems, while JM PVC fleece‑backed membranes offer added chemical resistance and are well‑suited for industrial, manufacturing, and food‑service environments.

Supporting FM Very Severe Hail Performance

FM Global’s VSH classification represents one of the highest impact‑resistance standards in commercial roofing. Fleece‑backed membranes contribute to VSH‑rated assemblies by absorbing impact energy and helping protect insulation layers beneath the membrane. Several Johns Manville fleece‑backed systems meet FM VSH requirements when installed in approved configurations.

Compatible with JM QuickFoam^® Roofing Adhesive

JM fleece‑backed TPO and PVC membranes are fully compatible with JM QuickFoam^® Roofing Adhesive. This high‑performance adhesive delivers fast set times, strong initial grab, excellent bond strength, and flexibility after cure. It can also be applied in colder temperatures, helping crews stay productive across a wider range of jobsite conditions.

Built for Long‑Term Protection

With enhanced puncture resistance, improved wind uplift performance, and long‑term durability, Johns Manville fleece‑backed roofing systems are engineered to protect commercial buildings over the life of the roof. When performance expectations are high, fleece‑backed TPO and PVC membranes, paired with JM QuickFoam^® Adhesive, offer a dependable, resilient solution.

Learn more at jm.com