Energy & Performance Standards.
Every architectural vision faces the challenge of thermal loss. At LIKI, we promise to bridge the gap between European precision and your site’s climate demands. Preview our Integrated System Approach below to see how we achieve elite energy efficiency without compromising structural scale.
We utilize Technoform PA66GF25 polyamide strips to break the thermal bridge, significantly lowering U-Values.
The Secret to "Warm" Aluminum
Stops Heat. Keeps Strength.
Standard aluminum conducts heat; LIKI Systems stops it. Our profiles feature extra-wide Technoform® polyamide thermal breaks. This structural barrier physically separates the interior and exterior frames, virtually eliminating thermal transfer and achieving a superior U-Factor.
- ISO Certified Thermal Breaks
- Multi-Chamber Design traps air
- Condensation Resistant
Glass Performance
The frame is only half the story. Our glazing packages are tailored to your climate.
Triple Glazing
Available configurations with Argon gas fill achieve U-Factors as low as 0.18, meeting Passive House standards for the most demanding climates.
Low-E Coatings
Microscopic metallic layers reflect heat back to its source, maintaining interior comfort while blocking 95% of harmful UV radiation.
Warm Edge Spacers
Non-conductive composite technology replaces traditional aluminum spacers to prevent edge condensation and fogging.
Performance You Can Measure.
Energy efficiency is not a generic trait; it is a calculated result. Because a system’s performance changes based on the specific frame material, glass coatings (Low-E), and gas fills (Argon), NFRC ratings are determined by the exact configuration of the unit. LIKI aligns with these rigorous protocols to provide the transparency required for building permits and energy modeling compliance.
The National Fenestration Rating Council (NFRC) is the non-profit organization that provides the primary standard for window and door energy performance in North America. Much like a “nutrition facts” label, the NFRC label provides independent, verified data, allowing architects and homeowners to compare products based on technical facts rather than manufacturer claims. Browse the NFRC database to see their ratings for any LIKI product.
Measures how well the window prevents heat from escaping. Lower is better.
The U-Factor measures the rate of non-solar heat transfer. LIKI system windows are engineered first as high-performance thermal platforms, with verified configurations achieving a U-Factor as low as 0.18. This ensures energy code compliance for projects in extreme sub-zero environments.
SHGC (Solar Heat)
The Solar Heat Gain Coefficient (SHGC) measures solar radiation entry. We provide customizable glazing options to optimize the SHGC based on your project’s specific ASHRAE climate zone, ensuring a balance between natural daylighting and cooling load reduction.
Visible Transmittance (VT)
Measures how much natural light comes through the system.
Air Leakage
Measures how much air infiltrates through the seals and frame.
Sustainable by Design.
Aluminum is one of the most sustainable building materials. Our 6063-T66 primary aluminum is 100% recyclable with no loss of quality, significantly lowering your building’s carbon footprint.
Frequently Asked Questions
Find answers about performance, shipping, and customization.
U-Factor measures the rate of non-solar heat transfer through the entire window system. Unlike R-value (insulation), a lower U-Factor indicates superior thermal resistance. LIKI thermally broken aluminum systems achieve ratings as low as 0.18, maintaining internal temperature stability even in extreme sub-zero North American climates.
SHGC measures the fraction of solar radiation admitted through a window. In cooling-dominated climates, a low SHGC is critical to blocking infrared heat and reducing AC load. We offer customizable Low-E glass configurations to optimize the SHGC according to your project's specific ASHRAE climate zone.
The NFRC (National Fenestration Rating Council) label provides third-party verified data on U-Factor, SHGC, Visible Transmittance (VT), and Air Leakage. This standardized data allows professionals to confirm that LIKI systems meet the performance requirements of local building energy codes.
Standard aluminum is conductive, but LIKI systems utilize an Integrated System Approach. We insert a structural polyamide Thermal Break (specifically Technoform® strips) between the interior and exterior profiles. This mechanical separation disrupts the heat path, achieving the durability of metal with insulation properties comparable to wood or vinyl.
The frame typically accounts for 25% of the total window area. A standard non-thermal frame can undermine even the best Triple Pane glass. Our 6063-T66 primary aluminum frames are engineered with multi-chamber thermal paths to ensure the Thermal Integrity of the entire building envelope, not just the center-of-glass.
Low-E glass features a microscopically thin metallic coating that reflects long-wave infrared energy (heat). In winter, it reflects indoor heat back inside; in summer, it reflects external solar heat away. This acts as a transparent thermal mirror, optimizing comfort without reducing Visible Transmittance (VT).
Argon gas is an inert, non-toxic gas that is significantly denser than air. By filling the glazing cavity with Argon gas, we minimize convection currents within the glass unit. This significantly improves the system’s U-Factor and reduces thermal transfer.
Spacers maintain the gap between glass panes. Traditional aluminum spacers conduct cold, creating a "cold edge" where fogging occurs. LIKI utilizes non-conductive Warm Edge composite spacers, which block heat transfer at the perimeter and significantly reduce the risk of condensation.
Yes. High-performance Low-E glass configurations block up to 95% of harmful UV rays. This serves as a structural sunscreen for the building, protecting interior floors, furniture, and artwork from fading while maintaining architectural transparency.
For most temperate regions, high-performance Double Pane glass with Low-E is sufficient. However, for projects targeting Passive House standards or located in extreme northern zones, Triple Pane is recommended to maximize insulation and achieve the lowest possible U-Factor.