Glazing is selected from actual Uw, solar, acoustic and safety requirements; large vents are also checked for glass weight.
Schüco / High-insulation windows
AWS 75.SI+
Schüco’s Super Insulated platform at a 75 mm basic depth. The system is designed for energy-efficient envelopes with a broad range of opening types, profile combinations, concealed fittings and integrations.

VERIFIED PARAMETERS
Thermal performance without losing architectural flexibility.
AWS 75.SI+ is a platform rather than a single fixed U-value. Thermal performance depends on the profile combination, face widths, glazing and spacer specification.
75 mm
from 91 mm
from 0.9 W/m²K
18–61 mm
up to 1700 × 2500 mm
up to 250 kg
up to 48 dB
class 4
9A
C5 / B5
up to RC3
zero-threshold option
With AWS 75.SI+, thermal performance comes from the whole assembly. Frame geometry, glass, spacer and installation position need to be specified together.
PROFILE CROSS-SECTION
AWS 75.SI+ profile geometry in detail.
This image shows the system's profile geometry, chambers, thermal breaks and glazing zones. The final junction is selected for the opening scheme, glass build-up, dimensions and project loads.

CAPABILITIES
For demanding building envelopes.
Wide selection of opening types and profile combinations
Concealed manual or mechatronic fittings
Barrier-free and zero-level threshold variants where applicable
Integration with Schüco doors, façades, ventilation and solar shading
THERMAL ENGINEERING
We compare whole-window Uw, not profile Uf alone.
When specifying AWS 75.SI+ we calculate the complete element: profile, glass, edge zone, frame proportion and geometry. This avoids over-specification where the glazing or installation junction is the real limiting factor.
Whole-element Uw
Calculated for the actual size and glazing build-up, not an isolated marketing minimum.
Fittings
Large vents require a check of glass weight, hardware capacity and concealed fitting options.
Perimeter detail
Frame position and sealing must preserve the thermal potential of the system.
COMPLETED PROJECT
See the system in a Kharkiv residence.
The 2021 project combines Schüco AWS 75 SI+, ASE 80 HI and AS FD 75 with a high-performance glass build-up and a warm Meesenburg installation base.
Open case study ↗BIFORIUM / PRACTICE
A system only works as a whole with glass, hardware and installation.
Installation position, support, insulation, sealing and drainage belong in the specification rather than being improvised on site.
Open engineering details ↗Hardware limits the viable vent geometry just as much as the profile. Concealed hinges and automation need early coordination.
Installation position, support, insulation, sealing and drainage belong in the specification rather than being improvised on site.
FAQ / SPECIFICATION
Questions to close before specification.
Can the system be selected only from catalogue performance?
No. Published values help shortlist options, but the finished element still has to be checked for size, glazing, weight, hardware, loads and installation detail.
Does every opening need the same glazing build-up?
Not necessarily. A south-facing elevation, a bedroom near traffic, a large fixed pane and an entrance leaf can require different glazing within the same project.
When should the installation detail be coordinated?
Before the final order. Finished-floor level, insulation, waterproofing, structural support and drainage can change the frame, threshold or final manufacturing size.
HOW TO READ THE DATA
Six values that shape the result.
A catalogue maximum is not the rating of every fabricated element. Classes depend on size, opening scheme, glazing, hardware and the tested configuration.
THERMAL REVIEW
We will verify whether SI+ is justified.
Send sizes, opening types, preferred glazing and target Uw. We will select the profile configuration without unnecessary over-specification.
Send project ↗
