Powerbase MultiGas 300 External Corner – Prefabricated Gas Barrier Corner Unit - 125mm × 125mm × 125mm

Powerbase MultiGas 300 External Corners are prefabricated corner components designed to provide a simple, reliable and fully compatible method of detailing corners within Powerbase MultiGas 300 gas barrier membrane systems. Manufactured to integrate seamlessly with the membrane, they help create gas‑tight, air‑tight, vapour‑tight and water‑tight seals at critical junctions, reducing installation time and improving site quality. 

Powerbase MultiGas 300 Corners have been specifically developed for use with Powerbase MultiGas gas barrier membranes, eliminating the need to form complex corner details from site‑cut membrane sections. Their prefabricated design helps improve consistency, reduce installation errors and maintain the integrity of the gas protection system. When used alongside Powerbond tapes and approved membrane accessories, the corners contribute to a continuous barrier against radon, methane, carbon dioxide, moisture vapour and water ingress.

Powerbase MultiGas 300 Corners provide a fast and dependable solution for one of the most critical areas of any gas barrier installation. Their factory‑formed design helps ensure consistent sealing performance, reduces labour on site and supports the long‑term effectiveness of the overall gas protection system.

CHARACTERISTICS

• Prefabricated construction - simplifies installation and improves detailing quality.
• Designed for Powerbase MultiGas 300 membranes.
• Provides gas‑tight, air‑tight, vapour‑tight and water‑tight joints.
• Reduces on‑site fabrication and installation time.
• Helps maintain membrane continuity at critical junctions.
• Suitable for contaminated land and ground gas protection systems.

APPLICATION

• External corner detailing in gas membrane systems
• Ground floor gas protection installations
• Radon protection systems
• Methane and carbon dioxide barrier systems
• Brownfield and contaminated land developments