Layflat Ventilation Ducting
Forced ventilation ducting for pushing air into tunnels and underground workings. Made of PVC coated polyester fibre with a combination of fire retardant, anti static, tear resistant and rot resistant properties.
Material Properties
See the link for FRAS certification under the Semi Rigid heading. Our layflat is built for forced ventilation in demanding underground conditions.
Fire Retardant
Engineered to resist flame spread in underground environments.
Anti Static
Antistatic properties prevent static discharge build-up.
Tear Resistant
Reinforced polyester fibre resists tearing under load.
Rot Resistant
Material resists rot and degradation in humid tunnel conditions.
Technical Data
Available Configurations
- Any length — usually supplied in 50M runs
- Most diameters available on request
- Colour options beyond standard black
- Fully welded construction throughout
- FRAS certification available
Layflat Bends & Grout Support Bags
Actual workshop examples manufactured at our Central Coast facility — including large diameter layflat bends and high-capacity grout bags for underground ground support.
Layflat BendLarge-Diameter Layflat Bend
Custom manufactured large-diameter layflat bend for forced ventilation. Engineered to maintain smooth aerodynamic airflow around heading turns and cross-cuts without kinking.
Fabricated BendSegmented 90° Directional Bend (Lobster Back)
Precision-welded segmented layflat bend constructed from heavy-duty FRAS PVC fabric. Provides reliable direction change for positive pressure air supply in mining and civil tunnelling.
Continuous RunContinuous Layflat Air Supply Run
Standard straight layflat ducting featuring heavy-duty suspension fin with brass eyelets for fast overhead catenary wire hanging along headings.
Ground SupportHigh-Capacity Grout Support Bag
Known as grout bags — heavy-duty square/cubic fabric containment bags designed to be filled with materials and cementitious grout that harden to create structural support within underground mines and tunnelling projects.
Cavity FillingCavity & Void Filling Grout Bag
Custom-dimensioned square grout bags engineered to seal overbreak, roof voids, and chambers. Injected with self-hardening materials to consolidate rock strata and prevent underground ground movement.