Powerbase Low Perm - Radon, Low Level Methane & CO2 Gas Protection Membrane - 4m x 50m roll

Powerbase Low Perm is a durable, reinforced polyethylene membrane designed to provide low‑permeability protection against methane, carbon dioxide and radon in low‑ to medium‑risk ground conditions. It offers a reliable, economical solution for developments that require gas protection but do not need the higher‑grade performance of VOC or hydrocarbon‑resistant systems.

Powerbase Low Perm is a multi‑layer, reinforced gas‑resistant membrane engineered to deliver stable, low gas‑transmission rates beneath concrete slabs and ground‑bearing floors. Its reinforced scrim provides improved tear and puncture resistance, making it suitable for typical construction environments while remaining flexible enough for detailing around penetrations and junctions. The membrane is installed with sealed laps using compatible tapes such as Powerbond Butyl Tape or Powerlon FlameOut Tape where fire‑retardant performance is required. When correctly installed, it forms part of a BS 8485‑compliant gas‑protection system for low‑ to moderate‑risk sites.

Powerbase Low Perm is typically used in residential, commercial and light industrial developments, particularly where methane and CO₂ are present at manageable concentrations. Powerbase Low Perm is a practical, economical and reliable membrane for developments that require gas protection without the need for heavy‑duty or VOC‑resistant systems. Its balance of performance, durability and cost makes it a trusted choice for low‑ to medium‑risk ground‑gas applications.

CHARACTERISTICS

• Low‑permeability gas barrier for methane, CO₂ and radon.
• Reinforced polyethylene construction for improved durability.
• Cost‑effective solution for low‑ to medium‑risk sites.
• Compatible with taped or welded joints for continuous protection.
• Suitable for BS 8485 gas‑protection strategies (Green to Amber risk levels).
• Flexible and easy to install, with good handling characteristics.
• Ideal for residential and commercial developments on non‑VOC‑contaminated land.

APPLICATION

• Housing developments on low‑ to moderate‑risk brownfield land
• Commercial and light industrial buildings
• Sub‑slab protection beneath concrete floors
• Radon‑affected areas
• Sites requiring methane and CO₂ protection
• Use as part of a multi‑layer gas‑protection system