Modern Design with Superior Energy Performance
Lanai Doors® thermally broken aluminum folding doors are engineered for projects that demand both contemporary design and high energy efficiency. Unlike traditional French doors or non-thermally broken aluminum systems, these doors feature an insulated thermal break within the frame that dramatically reduces heat transfer, making them ideal for extreme hot and cold climates.
With slim 3-inch stiles and 3 ½-inch rails, Lanai folding doors maximize glass area and natural light while ensuring compliance with strict energy codes like California’s Title 24.
Why Choose Thermally Broken Folding Doors?
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Energy Efficiency: The thermal break acts as a barrier between interior and exterior surfaces, minimizing heat loss in the winter and heat gain in the summer.
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Title 24 Compliant: Meets or exceeds California’s strict energy codes, helping reduce energy bills.
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Comfort in Any Climate: Keeps interiors warmer in cold climates and cooler in hot, humid regions.
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Durability: Built from high-quality 6063-T5 architectural aluminum with corrosion resistance.
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Beauty: Same slim sightlines and expansive glass openings as our standard aluminum systems.
Engineered for Large Openings
Thermally broken Lanai systems are designed for oversized spans, just like our standard aluminum doors:
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Panel sizes up to 4’ 3” wide by 13’ 1” tall.
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Openings up to 68 feet wide.
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Flexible stacking configurations—panels can fold to the left, right, inside, or outside.
Whether for a mountain retreat in Colorado or a sun-soaked home in Arizona, these doors create the effect of a movable glass wall that blends beauty with high performance.
Threshold Options for Seamless Transitions
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Standard threshold: Maximum weatherproofing for exposed conditions.
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Low-rise ADA threshold: Accessibility compliance for homes, storefronts, and restaurants.
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Flush guide: Creates seamless transitions between interior and exterior spaces.
Every option is engineered to maintain weather-tight seals while providing smooth operation.
Custom Finishes and Glass Options
Thermally broken aluminum doors are available in:
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Standard anodized finishes: clear or bronze.
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Painted finishes: white, tan, and other custom colors.
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Glass options: dual glazed, laminated, Low-E, tinted, or decorative.
These systems combine design flexibility with high-performance glazing to maximize insulation and energy savings.
Applications
Thermally broken Lanai Doors are ideal for:
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Residential homes in hot or cold climates.
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Luxury builds requiring compliance with Title 24 and other energy codes.
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Commercial spaces where large openings must remain comfortable year-round.
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Coastal or mountain environments with extreme weather exposure.
Why Thermally Broken Lanai Doors Outperform French Doors
Traditional French doors limit span sizes and are prone to heat transfer through frames and gaps. By contrast, Lanai’s thermally broken aluminum systems:
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Create large, open spans with maximum natural light.
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Deliver modern slim profiles with just 3-inch stiles.
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Maintain energy efficiency and comfort in extreme climates.
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Offer ADA-compliant threshold options for seamless transitions.
Lanai Doors are the modern, energy-efficient alternative to French doors—combining beauty, durability, and performance.