Aliplast Superial SU Hidden-Sash Window System

Aliplast Superial SU Hidden-Sash Window System

The Aliplast Superial SU Hidden-Sash Window System is a three-chamber aluminum window profile designed to conceal the operable sash from the exterior. Its shaped outer frame covers the full sash height, so an opening field can present a facade line similar to a neighboring fixed field. This creates a more continuous glazed elevation while retaining an operable window within the composition. The detail is especially relevant when matching opening and fixed sections across a broad aluminum frontage: the concealed sash edge reduces the visual difference between the two fields. Base SP SU combines an aluminum profile with a polyamide thermal break. Its frame depth is 75 mm and sash depth is 78 mm, with glazing from 14 to 51 mm. The glazing range leaves room for different compatible infill builds, while the chosen glass remains part of the full window design. Aliplast also describes traditional and concealed drainage options. Those alternatives let the fabricator coordinate water evacuation with the profile arrangement and the desired exterior appearance. The concealed sash, consistent outer sightline, and drainage choices give Superial SU a clear architectural identity among aluminum windows intended to sit alongside fixed glazing.

Concealed Sash and Facade Coordination

Superial SU supports a range of aluminum surface treatments, including RAL colors, textured finishes, wood-effect and stone-effect appearances, anodized finishes, and bicolor options. The palette allows a project to carry one color across the frame or distinguish the interior from the exterior, while textured or anodized surfaces can add a different visual quality to the profile. Aliplast also lists profile bending as a system capability, extending design possibilities when shaped profile work is specified. The visible effect of those choices is paired with the defining hidden-sash construction: the outer frame masks the sash profile so the opening field can align more closely with fixed glazing. For base SP SU, Aliplast publishes Uf from 1.48 W/(m²·K), air Class 4 under EN 12207, wind C4/B4 under EN 12210, water E1200 under EN 12208. The Uf value depends on profile combinations and infill thickness. Manufacturer system data and available choices depend on the exact SP SU version, profile combination, glazing, and finished assembly. The listed glazing capacity, drainage alternatives, and concealed outer sash describe complementary parts of the same system: profile geometry sets the facade line, the drainage detail follows the selected profile arrangement, and the glass build completes the opening. Together, those options make this aluminum hidden-sash window suitable for elevations where openable and fixed glazed areas are designed as a visually coordinated set.

Aliplast Superial SU Hidden-Sash Window System Specifications