Schüco AWS 75.SI+ (Super Insulation) represents the next level in aluminum window technology. The SI+ designation indicates the use of special foam inserts inside the polyamide thermal bridges, significantly reducing heat loss through the frame.
This system combines the elegance and durability of aluminum with thermal performance approaching that of PVC profiles. It's the perfect choice for energy-efficient homes where aesthetics cannot be compromised.
Technical Specifications
Details
Super insulation aluminum. Premium 75 mm system with foam-filled thermal bridges for maximum energy efficiency.
System structural parameters:
- Installation depth: 75 mm.
- Profile type: Thermally broken aluminum with foam-filled polyamide thermal bridges (SI+ technology).
- Design: Wide range of contours available — from rounded Soft Line (SL) and beveled Residential Line (RL) to block system (BS) with concealed sash.
- Sealing: Triple sealing with optimized central gasket combining porous and solid rubber for improved insulation.
- Hardware: Full compatibility with concealed Schüco AvanTec SimplySmart hardware (up to 250 kg) and mechatronic TipTronic.
Glazing options:
- Infill thickness: up to 61 mm.
- Glass unit types: Any configurations, including heavy triple-glazed, acoustic, and armored units.
Certified characteristics:
- Thermal insulation (Uf): from 0.92 W/m²K (frame).
- Sound insulation (Rw): up to 48 dB.
- Burglar resistance: up to RC3 class.
- Air permeability: Class 4.
- Water tightness: Class 9A.
Smart Warmth
SI+ Technology

Airtightness
Optimized Gasket

Smart Home
Concealed Mechatronics

Schüco AWS 75.SI+
Super insulation aluminum. Premium 75 mm system with foam-filled thermal bridges for maximum energy efficiency.
Financing Options
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More detailsDon't Forget to Add
Additional elements and accessories that will make your home even more comfortable
Mosquito Nets
Handles and Locking Elements
Lamination
Decorative Elements
Compare with Similar Profiles
Alternative solutions from other manufacturers
Schüco AWS 65
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Schüco AWS 90.SI+
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Cortizo COR 70 Hoja Oculta
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FAQs
Frequently Asked Questions about Schüco AWS 75.SI+
Is this aluminum really warm?
Yes, the profile Uf reaches 0.92 W/m²K. Combined with a warm glass unit (window Uw ≈ 0.9-1.0), this system meets modern energy-saving standards for residential cottages in temperate climates.
How does AWS 75.SI+ differ from standard AWS 75?
The SI+ version has additional foam insulating inserts and an improved gasket. The aluminum geometry is the same, but the thermal performance of the SI+ version is significantly higher.
How large can sashes be made?
Sashes can be made up to 2500 mm high and 1700 mm wide (depending on glass weight). Maximum sash weight is up to 250 kg (with reinforced hardware), allowing panoramic opening walls.
What opening options are available?
Tilt-and-turn, turn-only, tilt-only (top-hung), French doors (without central mullion), as well as PASK portal doors (parallel-sliding).
Can it be painted in two colors?
Yes, this is a standard option for "warm" aluminum. You can order different profile colors for outside (matching the facade) and inside (matching the interior).
How to maintain aluminum windows?
Aluminum requires virtually no maintenance. Simply wash the profile with soapy water twice a year and lubricate the hardware with oil. Powder coating doesn't need renewal for the entire service life (50+ years).















