Modern Semi-Detached Modular Homes

Future Gaff was proud to be partially involved in this modern semi-detached modular home project in Lithuania — a development that highlights how precision-engineered SIP technology can redefine sustainable living. The project features two large, contemporary modular homes designed with strong architectural lines, expansive balconies, and floor-to-ceiling windows that flood the interiors with natural light. Each house is built on a flat-roof structure, creating a clean, minimalist aesthetic that aligns with current European architectural trends.

The primary structure is composed of 224 mm and 274 mm SIP panels with magnesium oxide (MgO) boards, chosen for their exceptional strength, fire resistance, and dimensional stability. These panels serve as both the structural and insulation core of the building envelope, offering superior thermal performance compared to conventional construction. On top of the SIP structure, an additional 150 mm EPS Neopor insulation layer was applied to the exterior, further improving the building’s overall energy efficiency. This combination allows the walls to achieve an impressive U-value of approximately 0.11 W/m²K, ensuring the homes remain warm in winter and cool during summer while drastically reducing heating costs. The roof system, also constructed from SIP panels with high-density insulation, delivers a U-value of around 0.09 W/m²K, aligning with near-Passive House standards.

The external finish was completed with a durable acrylic render in two complementary colours, giving the semi-detached units a modern yet welcoming visual character. The use of dual-tone render accentuates the geometric design and separates individual units subtly without compromising architectural unity. The render system also plays a functional role by protecting the SIP wall assembly from weather exposure while maintaining breathability and vapor permeability.

Large triple-glazed aluminium windows not only elevate the visual appeal but also enhance the energy performance and acoustic insulation of each modular home. With U-values of around 0.80 W/m²K, these windows help maintain a comfortable indoor environment and contribute to the project’s sustainability goals. The integration of energy-efficient ventilation systems ensures continuous air renewal while minimizing heat loss — a key factor in maintaining high indoor air quality within airtight SIP-based structures.

This Lithuanian project demonstrates how modular home construction using advanced SIP panels can deliver rapid assembly, consistent quality, and exceptional energy performance. Each component was factory-produced with millimetre-level precision, ensuring minimal on-site waste and shorter build times compared to traditional masonry construction. The result is a modern living space that combines aesthetic appeal, durability, and eco-efficiency — all essential qualities for today’s sustainable housing market.

Future Gaff’s contribution to this project reinforces our mission to promote high-performance modular home solutions across Europe and Ireland, using only the most energy-efficient materials and technologies available.