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- Expandable House
- Flat Roof Expandable House
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- About PreFab
- …
- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
- …
- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
Astra F20 — The Elite 20ft Flat Roof Expandable Home
Sleek Minimalist Design Meets High-Efficiency Modular Living
- Modern Flat Roof Aesthetic: A clean, contemporary silhouette that fits perfectly into modern urban or natural landscapes.
- Spacious 38㎡ Interior: A full-scale studio or multi-bedroom layout offering nearly 400 sq. ft. of versatile living space.
- Superior Thermal Engineering: Features an upgraded 100mm EPS insulated roof on the expandable wings for maximum energy efficiency.
- Rapid 10-Minute Deployment: Precision-engineered folding systems allow two people to fully expand the home in minutes.
- Starting from $12,000 USD
Why Astra F20?
Architectural Minimalism
The flat roof design offers a more "built-in" look compared to traditional pitched-roof prefabs, ideal for high-end ADUs or boutique cabins.
Enhanced Logistics
Optimized for global transport, our flat-roof design ensures easier stackability and fits 2 full units in a standard 40HQ container.
Rugged Resilience
Hot-galvanized steel frame with electrostatic white powder coating provides a 20+ year lifespan with minimal maintenance.
Technical Specifications
Customizations for local building codes and extreme climates are available upon request.
Dimensions & Space
- External Dimensions (Open): 5900mm (L) x 6420mm (W) x 2450mm (H)
- External Dimensions (Folded): 5900mm (L) x 2250mm (W) x 2450mm (H)
- Internal Dimensions: 5740mm (L) x 6260mm (W) x 2250mm (H)
- Total Area: 38 ㎡
- Weight: Approx. 2.5–2.8 Tons
Structure & Materials
- Main Frame: Hot-dip galvanized steel with electrostatic spraying (Pure White finish).
- Wall Panels: 65mm EPS color steel composite panels (0.3mm double-sided steel).
- Main Roof: 50mm EPS color steel composite board + 0.45mm corrugated steel veneer.
- Wing Roofs: Upgraded 100mm EPS insulation for superior overhead heat protection.
- Flooring: 18mm Bamboo glue board base + 4mm premium SPC stone plastic finish.
Openings & Hardware
- Entrance Door: High-security broken-bridge aluminum or fire-rated steel door.
- Windows: Double-glazed aluminum or plastic-steel sliding windows.
- Hinges: 130mm heavy-duty galvanized embedded hinges for high-cycle use.
Electrical & Systems
- Standard: Pre-installed CE/UL/SAA compliant electrical systems.
- Capacity: Integrated 12KW system with LED lighting and international sockets.
- Utilities: Pre-wired and pre-plumbed for immediate site connection (Plug-and-Play).
Kitchen & Bathroom
- Bathroom: Fully equipped with smart toilet, washbasin, mirror, and high-pressure shower.
- Design: Wet/Dry separation layout as standard.
Layouts & Lifestyle
Design Note: The flat roof provides a consistent internal ceiling height, creating a sense of volume and modern luxury often missing in traditional prefabs.
Frequently Asked Questions
What are the main benefits of the flat roof design?
The F20 offers a sleeker, more modern aesthetic. Technically, the flat roof also allows for better stackability during transport and provides a consistent internal ceiling height across the expanded space.
How is the F20 insulated for extreme weather?
We use 65mm EPS wall panels and have upgraded the expandable wing roofs to 100mm EPS insulation to ensure excellent thermal performance in both hot and cold climates.
Can the flat roof support snow loads?
Yes, the galvanized steel frame and reinforced roof panels are engineered to handle significant snow and wind loads typical of residential environments.
How many people does it take to set up?
A crew of 2-3 people can typically have the Astra F20 fully expanded and utility-ready in approximately 10–15 minutes.
Does it include a bathroom and kitchen?
The F20 comes standard with a fully equipped bathroom module. Kitchen cabinets and fixtures can be pre-installed or customized to your specific floor plan.
Where can I learn more about shipping, import tax, and customs clearance?
If this is your first time importing prefab houses, please read our Prefab House Import & Shipping FAQ. It explains container loading, sea freight, import duty, local tax, customs clearance, local delivery, permits, and import documents. Prefab House Import & Shipping FAQ
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