Structures gonflables sportives — après avoir livré des structures dans plus de 15 pays, voici ce que tout porteur de projet doit savoir avant de signer.
Les structures gonflables — également appelées dômes pneumatiques, bulles de sport ou structures à membrane souple — représentent une solution de plus en plus plébiscitée pour créer des espaces sportifs couverts pérennes, à moindre coût et dans des délais réduits par rapport à la construction traditionnelle.
Ce guide présente les caractéristiques, les coûts, la durabilité et les applications concrètes des structures gonflables durables pour le sport.
Qu’est-ce qu’une structure gonflable durable ?
Une structure gonflable sportive est une enveloppe en membrane PVC tendue, maintenue par une légère surpression intérieure d’environ 30 à 50 pascals au-dessus de la pression atmosphérique. Des ventilateurs industriels fonctionnent en continu pour maintenir cette pression. L’entrée se fait par un sas pressurisé.
Contrairement aux structures gonflables événementielles temporaires, les dômes sportifs durables sont : – Conçus pour une utilisation permanente (20 à 30 ans) – Certifiés pour des charges de neige de 50 à 100 kg/m² et des vents supérieurs à 120 km/h – Équipés de systèmes CVC performants, d’éclairage LED sportif et d’accès sécurisés – Conformes aux réglementations de construction nationales (Eurocode en France)
Durabilité : combien de temps durent ces structures ?
Type de membrane
Durée de vie estimée
Polyéthylène (PE)
10 à 15 ans
PVC enduit polyester (standard)
20 à 30 ans
PVC architecture (PVDF)
25 à 35 ans
Coûts : ce que vous payez réellement
Coût d’investissement (projet clé en main, hors revêtement de sol)
Type d’équipement
Surface
Dôme saisonnier
Dôme permanent
Bulle de tennis 2 courts
~1 000 m²
100 000–160 000 €
155 000–270 000 €
Dôme tennis 4 courts
~2 000 m²
180 000–330 000 €
290 000–530 000 €
Dôme multi-sport
~3 500 m²
300 000–560 000 €
480 000–900 000 €
Grand dôme football 11
~9 000 m²
800 000–1 500 000 €
1 250 000–2 500 000 €
Coût au mètre carré
Spécification
€/m²
Simple peau saisonnière
80 à 130 €/m²
Double peau isolée (standard)
140 à 240 €/m²
Triple peau haute performance
220 à 380 €/m²
À titre de comparaison, la construction d’un bâtiment sportif traditionnel en France coûte généralement 700 à 1 500 €/m². Un dôme pneumatique représente donc 15 à 25 % du coût d’un équipement permanent équivalent.
Coûts de fonctionnement annuels
Poste
Dôme 2 000 m², climat tempéré
Énergie (ventilateurs + chauffage + éclairage)
22 000–50 000 €/an
Maintenance et inspections
5 000–14 000 €/an
Assurance
4 000–12 000 €/an
Main-d’œuvre saisonnière (dôme saisonnier)
10 000–25 000 €/an
Total (dôme permanent, hors personnel)
31 000–76 000 €/an
Points de vigilance avant l’achat
Certification des calculs de structure (bureau d’études OPQIBI ou équivalent)
Classement au feu minimum M2
Redondance des ventilateurs (minimum 2 avec basculement automatique)
Permis de construire : structures > 20 m² maintenues > 3 mois sont soumises à déclaration
HeroX AirDomes conçoit, fabrique et installe des structures à membrane souple pour le sport en Europe, au Royaume-Uni, aux États-Unis et aux Émirats arabes unis.
After designing and delivering air-supported structures across 20 countries, I can tell you that most buyers walk in asking the wrong questions – this guide (Inflatable dome buying guide) is built on everything I wish they had read first.
Inflatable domes — also called air-supported structures, sports bubbles, or air domes — are large-span fabric enclosures held up entirely by slightly pressurised air. They are the fastest and most cost-effective way to create climate-controlled, column-free indoor space for sports, storage, events, or industry.
This guide covers everything you need to know before buying: how they work, what they cost, what sports they suit, how long they last, and what the buying process actually looks like.
What is an inflatable dome?
An inflatable dome is a fabric membrane — typically PVC-coated polyester or polyethylene — anchored to a concrete ring beam or ground anchors. Industrial blowers maintain an internal air pressure of around 30–50 Pa (pascals) above ambient. That small pressure differential is enough to keep a membrane spanning 30–100+ metres with no interior columns.
Entry is via an airlock vestibule or revolving door that maintains pressure while allowing people to pass through freely.
They are not the bouncy-castle inflatables you see at fairs. Commercial air-supported domes are engineered to withstand snow loads of 50–100 kg/m², wind speeds above 100 km/h, and decades of continuous operation.
Football / Soccer — Full-size 5-a-side, 7-a-side, and 11-a-side pitches. A regulation 11-a-side synthetic turf pitch requires a dome of approximately 80 × 120 m.
Padel — One of the fastest-growing applications. A 4-court padel dome is typically 30 × 60 m.
Pickleball — Surging in the US. Multiple pickleball courts can be covered in a relatively compact dome footprint.
Golf — Driving range bays, short-game areas, and putting greens.
Multi-sport — A single large dome can house several different court configurations simultaneously: basketball, volleyball, badminton, and futsal are commonly combined under one shell.
Athletics — Throws cages, sprint tracks, and combined multi-event training facilities.
Hockey — Field hockey and ice hockey (the latter requires a refrigeration system in the floor).
Costs vary based on size, skin type, insulation level, HVAC specification, and whether the dome is seasonal or permanent. The following ranges are indicative for a complete turnkey project including foundations, airlock, HVAC, and lighting.
Facility type
Approx. size
Typical cost range
2-court tennis bubble (seasonal)
1,000–1,500 m²
£120,000–£220,000 / $150,000–$280,000
4-court tennis / pickleball dome
2,000–3,000 m²
£280,000–£550,000 / $350,000–$700,000
Small multi-sport dome
2,500–4,000 m²
£350,000–£700,000 / $450,000–$900,000
Full soccer pitch dome
9,000–12,000 m²
£800,000–£2,000,000 / $1,000,000–$2,500,000
Large multi-sport complex
12,000–20,000 m²
£1,500,000–£4,000,000 / $2,000,000–$5,000,000
Cost per square metre / square foot:
Dome specification
Per m²
Per sq ft
Basic single-skin seasonal
£80–£120 / $15–$22
—
Double-skin, insulated (standard)
£140–£200 / $25–$38
£13–£19 / $25–$38
Triple-skin, high-performance
£200–£350 / $38–$65
£19–£33 / $38–$65
These figures typically represent a 50–75% saving on equivalent permanent steel-and-concrete construction.
Energy — Blowers run 24 hours a day, 365 days a year (or seasonally). A 2,000 m² dome typically draws 7–12 kW for pressurisation. Heating in cold climates adds significantly: a well-insulated double-skin dome requires approximately 30–60 W/m² of heating capacity. Annual energy costs for a 2,000 m² dome range from £15,000–£45,000 / $20,000–$60,000 depending on climate and insulation specification.
Maintenance — Annual inspection, blower servicing, anchor checks, minor fabric repairs: typically £3,000–£10,000 / $4,000–$12,000 per year.
Insurance — Commercial inflatable structure insurance: typically £3,000–£12,000 / $4,000–$15,000 per year.
Seasonal labour — For seasonal domes: installation and removal crew, typically £8,000–£25,000 / $10,000–$30,000 per year.
Total operating cost benchmarks:
Dome size
Annual operating cost range
1,000–2,000 m²
£25,000–£70,000 / $30,000–$90,000
2,000–5,000 m²
£50,000–£130,000 / $65,000–$160,000
5,000–12,000 m²
£100,000–£350,000 / $130,000–$450,000
How long does an inflatable dome last?
Membrane lifespan depends primarily on material quality and UV exposure:
Polyethylene (PE) membrane — 10–15 years. Lower cost, lighter weight, less durable.
PVC-coated polyester membrane — 20–30 years. Industry standard for commercial sports facilities.
Structural components (anchoring systems, airlocks, blowers) typically have serviceable lives of 15–25 years with regular maintenance.
The blower system — typically 2–4 industrial fans with automated backup — should be serviced annually and replaced every 12–18 years.
Installation timeline
From contract signing to first use:
Phase
Typical duration
Engineering and drawings
4–8 weeks
Permitting (varies by jurisdiction)
4–16 weeks
Membrane manufacturing
8–14 weeks
Foundation and site preparation
2–4 weeks
Dome installation and inflation
1–3 weeks
HVAC, lighting, commissioning
1–2 weeks
Total from contract to first use
5–9 months
For seasonal domes on existing courts with simple ground anchors, the timeline can compress to 3–5 months. Planning permission is usually the longest variable.
Key questions to ask before buying
Permanent or seasonal? Permanent domes generate year-round revenue and have lower long-term labour costs; seasonal domes have lower capital costs and simpler planning routes.
Single or double skin? In climates with winter temperatures below +5°C, a double-skin insulated dome pays for itself in energy savings within 3–5 years.
What is the snow load rating? Ensure the structure is engineered for your local design snow load — this is a critical structural parameter, not a marketing claim.
What blower redundancy is included? You need at least one backup blower on automatic failover. In cold climates, a diesel generator backup is also advisable.
What anchorage system? A continuous concrete ring beam is the most secure and permanent anchor. Ground screws are faster and cheaper but have lower uplift resistance.
Who installs? Ensure your supplier provides a supervised installation with a qualified structural engineer on site. Self-installation of large commercial domes is not advisable.
What warranty covers what? Membrane, structure, blowers, and anchorage should each have clearly defined warranty periods. Industry standard is 5–10 years on membrane, 2–5 years on mechanical components.
An inflatable dome is likely a strong fit if: – You need indoor space within 12 months – Budget constraints rule out permanent steel construction – You already own the land or courts to cover – Your market has demonstrable year-round demand – You operate in a climate where outdoor sports are interrupted for 3+ months per year
It may not be the best option if: – You plan to operate for 30+ years and want the lowest possible lifetime cost – Your climate involves extreme sustained winds or ice loading beyond standard design parameters – Local planning authority requires permanent-structure classification – Your occupants expect a luxury, hotel-standard interior environment
HeroX AirDomes designs, engineers, and installs air-supported structures across the US, UK, Europe, and the UAE. Contact us for a free feasibility assessment for your project.
