Description
Sikaplan 1650 DPM Gas Barrier – High Performance Gas & Damp Proof Membrane
The Sikaplan 1650 DPM Gas Barrier is a multi-layer, low-density polyethylene membrane reinforced with a polypropylene grid and integral aluminium foil, designed to provide protection against methane, radon, carbon dioxide, air, and moisture.
Engineered for ground-level applications, it delivers high strength, durability, and reliable gas resistance, making it ideal for use in modern construction and contaminated ground conditions.
Key Features & Benefits:
✔ Multi-Layer Protection – Designed to resist methane, radon, CO₂ and moisture
✔ Reinforced Strength – Polypropylene grid improves durability and puncture resistance
✔ Aluminium Core – Enhances gas barrier performance
✔ Welded Joint Compatibility – Provides superior sealing and airtightness
✔ Dual Purpose – Gas barrier and damp proof membrane in one
✔ Standards Compliant – Meets BS8485 and NHBC requirements
✔ BBA Certified – Independently tested and approved
Ideal Applications:
✔ Ground gas protection systems
✔ Damp proof membrane (DPM) installations
✔ Under concrete slabs
✔ Subfloor and foundation construction
✔ Brownfield or contaminated land sites
✔ Below ground waterproofing systems
Installation Guidelines:
Install in accordance with BS8485 guidelines
Lay on a smooth, level substrate free from sharp projections
Seal joints using:
- Minimum 100mm overlap (heat welded recommended)
- Suitable tape where welding is not used
Use rollers to remove trapped air during taping
Seal penetrations using preformed details or gas membrane accessories
Product Specifications:
Thickness: 0.6mm (0.4mm between scrim)
Roll Size: 2m x 50m
Weight: 370 g/m²
Material: Reinforced polyethylene with aluminium foil
Tensile Strength: Up to 600 N/50mm
Puncture Resistance: 1.25 kN
Standards & Compliance:
BS 8485:2015 + A1:2019 compliant
EN 13967:2012 compliant
NHBC Standards compliant
BBA Certified (20/5738)
Frequently Asked Questions
What is Sikaplan 1650 used for?
It is used as a gas barrier and damp proof membrane to protect buildings from ground gases and moisture.
What gases does it protect against?
Methane, carbon dioxide, radon, and ground gases.
Can it be used under concrete slabs?
Yes, it is ideal for under slab and subfloor installations.
How are joints sealed?
Primarily by heat welding (recommended) or suitable jointing tape.
Is it compliant with UK regulations?
Yes, it complies with BS8485 and NHBC standards.
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