Perfect Conditions, Every Single Day
Elite performance environments with total climate control and A-rated energy efficiency
From £150,000
When excellence is non-negotiable and conditions must be perfect year-round, DUOL permanent air domes deliver the world's most advanced covering technology. Trusted by Premier League academies and David Lloyd Leisure.
The Premium Choice for Serious Facilities
Choose permanent air domes when consistent, professional-grade conditions are essential for your operation. Perfect for facilities where member experience, energy efficiency, and year-round availability drive success.
Ideal for
David Lloyd Leisure and premium operators
Premier League football academies
Elite tennis and performance centres
Universities with professional programmes
Active leisure operators
You should choose seasonal if you:
Require 365-day availability without compromise
Need total climate and environmental control
Have sustainability and energy efficiency targets
Want premium member/player experience
Seek 20+ year asset lifespan
Why Elite Facilities Choose Permanent
A-Rated Energy Efficiency
ECO Ultra achieves 0.65 W/m²K U-value—the industry's best thermal performance, reducing heating costs by 50-70%.
Total Climate Control
Maintain 18-22°C year-round regardless of external conditions, from -30°C to +45°C.
Double-Skin Technology
Exclusive DUOL partnership brings patented ECO membrane system—no thermal bridges, no condensation, no compromise.
Smart Building Systems
IoT-enabled monitoring with predictive maintenance, remote management, and real-time performance data.
Architectural Excellence
Wrinkle-free design with hidden cables creates premium aesthetics worthy of flagship facilities.
10-Year Warranty
Industry-leading membrane guarantee demonstrates DUOL's confidence in their technology.
Professional Lighting
Integrated LED systems deliver up to 750 lux for broadcasting standard illumination.
Superior Acoustics
45dB sound reduction creates peaceful training environments even in urban locations.
Tailored to Your Facility
Insulated Membrane System
A-rated energy efficiency
Two PVC layers with air gap insulation
U-value of 0.65 W/m²K (ECO Ultra)
Eliminates condensation issues
10-year manufacturer warranty
HVAC Integration
Total environmental control
Maintain 18–22°C year-round
Heat recovery ventilation options
Heat recovery ventilation options
Proven from -40°C to +50°C
LED Lighting System
Broadcast-quality illumination
200–500 lux for training
Up to 1,000 lux for competition/TV
Integrated into membrane design
Low energy consumption
Complete Facility Integration
More than just a dome
Changing rooms and amenities
Spectator seating options
Equipment storage
Seamless connection to existing buildings
Engineered for Excellence: Membrane Technology
ECO Basic - The Foundation Solution
Double-membrane with air pocket insulation
15–20% energy savings vs single-skin
Natural light transmission
Proven across hundreds of installations
Upgradeable membrane system
ECO Advance - The Smart Investment
U-value: 2.8 W/m²K
Upgradeable to A-rated insulation
Wrinkle-free design
Hidden cable system
30–40% energy savings
Architectural Options
Panoramic windows (up to 20m²)
Elevated sidewalls (up to 6m)
Custom geometries for challenging sites
Full colour customisation
Climate Control Systems
Gas-fired heating (300-1,500kW)
Air source heat pumps (COP 3.5-4.0)
Ground source heat pumps (COP 4.0-5.0)
Heat recovery ventilation (80% efficiency)
Technical Overview
Structural Performance
Wind rated to 180mph (290km/h)
Snow loading: 1.5kN/m²
Seismic resistance to regional codes
Operating pressure: 300-500 Pa
Triple safety factors
Installation
Timeline: 16-24 weeks total
Groundworks: 6-8 weeks
Manufacturing: 8-10 weeks
Assembly: 7-10 days
Commissioning: 3-5 days
Operational Requirements
Power: 3-phase, 100-400A
Energy use: 150-300kWh/m²/year
Maintenance: Annual inspection
Lifespan: 20-25 years membrane
Environmental Credentials
A-rated energy performance available
Supports net-zero targets
60% carbon reduction vs traditional
BREEAM excellent achievable
Covered Facilities Already Winning
The Grange Club, Edinburgh
We now run around 80% of our winter programme indoors. That's a massive change, and it's felt at every level of the club.
Rick Sherrington, Chair
The Grange Club, Edinburgh
From a business perspective, you're increasing participation, revenue and reliability. There has been a 75% increase in participation in our coaching programmes since the dome was installed.
Calum Meston, Head Coach
Premium Facility Management
Comprehensive Care Total facility management for optimal performance
Quarterly inspections
Mechanical/electrical maintenance
Performance optimisation
Tiered packages to suit your needs
Professional Cleaning Maintain appearance and extend lifespan
Specialist membrane cleaning
Improved light transmission
Annual service recommended
Extends membrane lifespan
Capital Investment Options Structured financing solutions
Spread costs over 3–7 years
Operating leases available
Energy savings financing
Public sector frameworks
Your Premium Solution
Membrane Options
ECO Basic: Proven double-skin construction
ECO Advance: Upgradeable to A-rated efficiency
Installation and commissioning included
Groundworks additional
What Affects Price
Dome size and configuration
Technology level selected
Climate control specification
Architectural features
Site complexity
What Affects Price
Dome size and configuration
Technology level selected
Climate control specification
Architectural features
Site complexity
Typical ROI Timeline
3-4 years through energy savings alone
Member retention improvements
Premium pricing capability
Reduced maintenance costs
Enhanced facility reputation
Energy Savings Comparison:
50-70% savings vs single-skin domes
30-40% savings vs traditional buildings
Typical annual saving: £20,000-50,000
Carbon reduction: 60% versus conventional
Membrane Technology (ECO Advance vs ECO Ultra)
THE SMART INVESTMENT
U-value: 2.8 W/m²K (upgradeable)
Future-proof with insulation upgrade path
30-40% energy savings vs single-skin
Identical elegant appearance to Ultra
From £150,000
THE PREMIUM STANDARD
U-value: 0.65 W/m²K (A-rated)
100mm premium insulation layer
60-70% energy savings vs single-skin
10-year manufacturer warranty
From £450,000
SMART BUILDING / ENERGY PERFORMANCE
Why Elite Facilities Choose Permanent
A-Rated Energy Efficiency
ECO Ultra achieves 0.65 W/m²K U-value—the industry's best thermal performance, reducing heating costs by 50-70%.
Total Climate Control
Maintain 18-22°C year-round regardless of external conditions, from -30°C to +45°C.
Double-Skin Technology
Exclusive DUOL partnership brings patented ECO membrane system—no thermal bridges, no condensation, no compromise.
Smart Building Systems
IoT-enabled monitoring with predictive maintenance, remote management, and real-time performance data.
Architectural Excellence
Wrinkle-free design with hidden cables creates premium aesthetics worthy of flagship facilities.
10-Year Warranty
Industry-leading membrane guarantee demonstrates DUOL's confidence in their technology.
Professional Lighting
Integrated LED systems deliver up to 750 lux for broadcasting standard illumination.
Superior Acoustics
45dB sound reduction creates peaceful training environments even in urban locations.
Frequently Asked Questions
What's the difference between ECO Advance and ECO Ultra?
ECO Ultra includes 100mm insulation achieving A-rated efficiency (0.65 W/m²K), whilst ECO Advance is the same elegant double-skin system without insulation (2.8 W/m²K) but can be upgraded later.
How does the energy efficiency compare to traditional buildings?
ECO Ultra achieves better thermal performance than most traditional sports buildings, with 30-40% lower energy consumption and significantly reduced carbon emissions.
Can permanent domes withstand extreme weather?
Yes, they're certified to 180mph winds and have performed flawlessly from Siberian winters (-40°C) to Middle Eastern summers (+50°C).
What about condensation issues?
The double-skin technology eliminates condensation through superior thermal bridge prevention. There are no cold surfaces for moisture to condense on.
How long does installation take?
Total project timeline is 16-24 weeks from order, with actual dome installation taking just 7-10 days. Most time is manufacturing and groundworks preparation.
What maintenance is required?
Annual professional inspection is essential, taking 2 days. The DomeCare™ Gold package includes all mechanical, electrical, and membrane maintenance.
Can the dome be relocated?
Yes, permanent domes can be dismantled and relocated if requirements change—a significant advantage over traditional construction.
