Monarflex RMB350 - Radon Barrier Membrane
Monarflex RMB350 is a high quality loose-laid radon resisting membrane made from blends of virgin low density polyethylene (LDPE).
When used in a new building as part of the Necoflex RAM™ system, it provides an effective barrier to the passage of radon, air and moisture from the underlying soil.
Features & Benefits
- Reinforced multi-layer membrane with high tensile and tear strength.
- High radon gas resistance.
- High performance moisture vapour barrier.
- Enhances the overall air-tightness performance of a building.
- Available in 4 metre wide roll (unfolded) which means quicker installation and fewer joints.
- Fully compatible with the Necoflex RAM System.
Product Availability
| Product Code |
Description |
Roll Size |
Roll Weight |
| 3004408 |
Monarflex RMB350 |
2m x 25m |
18kg |
| 3004409 |
Monarflex RMB350 |
4m x 25m |
36kg |
Product Data and Performance
Monarflex RMB350 is manufactured from 3 layers of virgin low-density polyethylene (LDPE) with a 12 x 12mm multi-filament polyester (1100 dtex) reinforcing grid between, to give high strength and tear resistance.
| Performance Data: |
| Colour: |
Red (top side)
Black (underside) |
| Thickness: |
0.35mm |
| Weight: |
355g/m² |
| Tensile Strength: |
>450N/50mm |
| Tear Resistance: |
>405N |
| Elongation: |
<19% |
| Moisture Vapour Transmission: |
0.03 g/m²/day |
| Water Vapour Resistance: |
>680MNsg-1 |
| Radon Gas Transmittance: |
16x10-9 m/s-1 |
| Radon Gas Permeability: |
5.6x10-12 m2/s |