Daily Cover
An alternative daily cover for the active tipping face that preserves airspace and cuts soil handling.
- Working Face
- Overnight Cover
- Wet-Weather Days
Soil Cover Replaced
~150 mm
To Mix & Apply
2 person crew
Covered Per Day
500–1,500 m²
// Spray-Applied Cover. For The Future.
Posi-Shell and Posi-Lock are spray-applied coatings that replace imported soil for daily and intermediate landfill cover, seal in hydrogen sulphide odour, cut off the oxygen feeding subsurface hotspots, and contain contaminated or erosion-prone surfaces. With our own application plant, Core-EP designs, applies and verifies these systems as one team, backed by our landfill engineering and construction quality assurance experience.
Find Out More
Cover & Containment
For Every Stage Of Your Site.
Posi-Shell®
Landfill Cover
Landfill Cover
What it does
Posi-Shell is a patented blend of clay binders, reinforcing fibres and polymers. Mixed with water (or, where approved, leachate), it forms a sprayable mortar that dries into a thin, durable, stucco-like shell over the working face or any exposed surface.
Get a QuoteIntermediate Cover
Harder, thicker formulations for batters and inactive areas, with durability enhancers for longer service.
- Batters & Slopes
- Inactive Cells
- Erosion Control
Rapid Response
Fast mobilisation to seal odour sources and hotspot areas, or to cover exposed waste when it matters most.
- H₂S Odour Complaints
- Subsurface Hotspots
- Emergency Cover
Daily Soil Cover vs Posi-Shell
| Soil | Posi-Shell | |
|---|---|---|
| Cover thickness | Typically ~150 mm | A few millimetres |
| Airspace consumed | High | Minimal |
| Material supply | Import / stockpile soil | Bagged product + water |
| Plant & labour | Dozer, trucks, operators | One applicator, two-person crew |
| Stripping next day | Often required | Not required |
| Daily coverage | Limited by soil supply and haulage | 500–1,500 m² per crew day |
| Wet weather | Muddy, trafficability issues | Spray-on, sheds rainfall |
Indicative comparison only. Actual performance depends on site conditions, formulation and regulatory approval.
Posi-Lock®
Containment
Containment
Contain. Stabilise.
Protect.
Posi-Lock is a spray-applied, mineral-based membrane that forms a durable barrier over contaminated soils and other exposed materials, helping protect air, soil and waterways by controlling dust, odour, VOC emissions and erosion.
Durability can be dialled in by adjusting the formulation and application thickness, from short-term stage covers to longer-duration stabilisation. It pairs naturally with our contaminated land, vapour and remediation services.
Discuss a Remediation Site- Contaminated SoilTemporary encapsulation during remediation
- StockpilesDust, odour & run-off control
- Slopes & DrainsErosion and siltation protection
- Ash & TailingsWind and water erosion control
- VOC SourcesEmission suppression over exposed material
- ExcavationsRapid cover between work stages
Odour & Hotspots
Landfill Gas
Landfill Gas
Seal it in.
Starve it out.
The same continuous, low-permeability shell that replaces daily soil cover also controls two of a landfill operator’s biggest headaches: hydrogen sulphide odour and subsurface hotspots. Our landfill gas engineers pair the coating with the assessment and monitoring that make it work.
Talk to an EngineerHydrogen Sulphide (H₂S) Odour
H₂S, the “rotten egg” gas, typically forms where sulphate-rich waste such as plasterboard breaks down in wet, oxygen-poor conditions. People can smell it at very low concentrations, so it is a common trigger for community complaints.
A continuous Posi-Shell layer seals exposed faces, batters and stockpiles to reduce fugitive odour release, and can be applied quickly in response to complaints or regulator notices.
- Exposed Working Faces
- Plasterboard & C&D Waste Cells
- Complaint & Notice Response
- Odour Control Plans
Subsurface Hotspots & Landfill Fires
Subsurface oxidation events (hotspots) are sustained by air entering the waste mass through cracks, thin cover and over-drawn gas wells. Cutting off that oxygen supply is the most common method for bringing them under control.
Posi-Shell forms a continuous, low-permeability seal over the affected area to limit air intrusion and starve the hotspot of oxygen. Our landfill gas engineers can also review your gas extraction and monitoring so air isn’t drawn back in.
- Cracked & Settled Cover
- Hotspot Sealing
- Air Intrusion Around Gas Wells
- Temperature & Gas Monitoring
Process
©2026
©2026
We help at every stage, from assessment and approvals to trial and ongoing application, so an alternative cover works for your operations team and your regulator.
- 01
Site Assessment
We review your cell layout, cover requirements, licence conditions and current soil costs.
- 02
Approvals Support
We help prepare the technical case for alternative cover within your site’s approvals framework.
- 03
Trial Application
Our crew mobilises the applicator for an on-site trial so you can see performance first-hand.
- 04
Ongoing Service
Scheduled or on-call application, with records and inspections to support compliance reporting.
Why Core
Our Team
Our Team
Engineers Who
Bring The Equipment.
Core Environmental Projects is an Australian, employee-owned engineering and design consultancy with a strong focus on landfill and contaminated site rehabilitation.
- Landfill specialistsAssessment, rehabilitation, gas and leachate management are our core work.
- Design, apply & verifyOne accountable team, supported by our construction QA experience.
- Our own plantDedicated mixing and spray application equipment, operated by trained Core staff.
- Local presenceOffices in Melbourne, Brisbane and Sydney.
FAQ
Questions
Questions
Common
questions
Is Posi-Shell accepted as daily cover in Australia?
Use of an alternative daily cover is governed by each site’s licence and the relevant state regulator. Posi-Shell is already used at landfills in Australia and overseas. We can help you assess your approval pathway and prepare supporting technical information.
How much can you cover in a day?
A two-person crew typically covers 500 to 1,500 m² per day, depending on access, slope, formulation and application thickness.
How long does the cover last?
Daily cover formulations are designed to last until the next day’s tipping. Intermediate formulations are harder and thicker, and with durability enhancers can remain erosion-resistant for a year or more.
Can Posi-Shell help with hydrogen sulphide (H₂S) odour?
Yes. A continuous shell over exposed waste reduces the surface that odour can escape from, and it can be applied quickly when complaints or notices arrive. Where the H₂S comes from gas generated in the waste, we can also assess landfill gas collection as part of a wider odour control plan.
How does it help with a subsurface hotspot or landfill fire?
Hotspots need oxygen, which usually enters through cracked or thin cover and over-drawn gas wells. Sealing the surface to limit air intrusion is the most common control method. Posi-Shell can be sprayed over the affected area to starve the hotspot of oxygen, alongside temperature and gas monitoring and adjustments to gas extraction. For an active fire, always follow your site emergency plan and fire authority advice.
What’s the difference between Posi-Shell and Posi-Lock?
Posi-Shell is primarily a landfill cover system. Posi-Lock is a mineral-based containment membrane typically used on contaminated sites, stockpiles and erosion-prone areas. Both are spray-applied with the same type of equipment.
Can we trial it before committing?
Yes. We recommend an on-site trial so your team and regulator can see performance under your conditions. Get in touch to arrange one.
Contact
Get in Touch
Get in Touch
Book A
Site Trial.
Tell us about your site and we’ll come back to you with next steps.