VisioMod Cristallo — Tempered Glass Fence

Name: PONARC GmbH
Address: DE

Formerly known as Cristallo Glass Infill Fence

VF-CRY

Tempered glass fence for terrace edges, infinity pools, sea-view properties and balcony perimeters. 10 mm ESG safety glass per EN 12150 standard (12 mm option above 1.8 m), with optional heat-soaked treatment per EN 14179 to neutralise nickel-sulfide failure risk on free-standing vertical glass. Four glass finishes — clear, satin, bronze, smoke. The 25 × 40 mm aluminium U-channel frame is concealed below the glass line, so the panel reads as a sheet of view without a fence. A wind-shelter alternative to masonry parapets and steel railings — privacy where you want it, view where you don't.

KEY FEATURES

10 mm tempered ESG safety glass (12 mm option for >1.8 m)
4 glass types: clear / satin / bronze / smoke
Minimal 25 mm concealed frame
Wind protection without view loss
Vertical mix-and-match with VisioMod System

REQUEST INFO

TECHNICAL SPECIFICATIONS

Built to Standard.

Glass standard10 mm ESG (EN 12150) — 12 mm option for >1.8 m

Heat-soaked optionEN 14179 (recommended for vertical free-standing glass)

Glass typeClear / satin frost / bronze / smoke grey

Frame25 × 40 mm concealed U-profile aluminium

Maximum panel1800 × 1200 mm

Wind resistance (standard)1.0 kN/m²

Wind resistance (coastal)1.6 kN/m²

Reference standardEN 12150 toughened glass, EN 14179 heat-soaked, EN 1991-1-4 wind

Download Datasheet

Engineering overview

VisioMod Cristallo is a fully tempered safety glass fence engineered for the moments when a boundary must exist without dimming the view. The system pairs 10 mm ESG glass certified to EN 12150 as the standard build with a 12 mm upgrade for any panel exceeding 1.8 m in height, where bending stresses and human-impact load cases demand the additional thickness. Each panel sits in a concealed 25 × 40 mm aluminium U-channel that is recessed into the slab edge or anchored flush to the structural deck, so the glass appears to rise from the floor without a visible frame. Maximum panel dimension is 1800 × 1200 mm, sized to balance transport practicality with uninterrupted sightlines, and modules can be aligned in continuous runs with minimal silicone joints between panes. The U-channel itself is anodised or powder-coated to match adjacent VisioMod series. For any vertical free-standing glass installation, heat-soak testing per EN 14179 is offered and strongly recommended. Tempered glass carries a small but real risk of spontaneous fracture caused by nickel-sulfide inclusions that expand over years; heat-soaking forces these inclusions to fail inside the oven rather than years later above a terrace. On parapet, balcony, and pool-perimeter glass where a fractured panel would fall outward toward people below, the heat-soak option is the difference between a manageable specification risk and an unmanageable one. Cristallo is offered in four glass finishes — clear for full transparency, satin frost for diffuse privacy without view loss, bronze for warm tonal control of strong sun, and smoke for a deeper shadow read at evening-lit terraces. The positioning is wind shelter without view sacrifice. Where a masonry parapet would block both, and a slatted screen would block neither well enough, Cristallo holds back coastal wind loads up to 1.6 kN/m² in the coastal build (1.0 kN/m² standard inland) while leaving the horizon untouched. It is designed to mix-and-match vertically with other VisioMod series — Lineo aluminium slat panels above for selective privacy at standing eye-level, Bosco WPC below for a warm planted-zone base — producing layered transparency that responds to what each height needs to do.

Architectural integration

Reading on the facade

At a terrace edge, glass reads as absence rather than presence — the eye registers the floor stopping and the landscape continuing, with the barrier itself almost invisible in oblique light and only catching reflection at near-perpendicular angles. The finish choice should follow the function each elevation is asked to perform. Clear glass is correct where the view is the entire reason the building exists: cliff-top, sea-front, alpine. Satin frost diffuses light into a soft glow at pool decks and spa terraces where bathers want privacy without losing daylight. Bronze warms harsh midday sun on south and west elevations and pairs well with timber decking and warm stone. Smoke deepens evening shadow and suits rooftop bars and restaurant terraces where the glass should disappear after dusk while still reading as a contained edge. Cristallo is designed to stack with other VisioMod series in the vertical plane: a Lineo aluminium slat panel above standing eye-level lets a guest see the horizon while hiding a neighbour's kitchen window, and a Bosco WPC base course adds warm material contrast and a planted-zone visual weight against the cool glass above.

Installation

Foundation & site notes

The concealed U-channel is the structural element and must be installed first. It can be cast directly into a C25/30 concrete kerb at the slab edge for new-build, or surface-anchored to an existing slab using M12 stainless fixings at 250 mm centres with a structural levelling resin under the channel. Verify pull-out values against the wind load case before specifying anchor spacing; coastal 1.6 kN/m² builds typically require closer fixings. The heat-soak EN 14179 option should be specified for any risk-conscious project and is effectively mandatory for parapet and balcony applications. Glass panels are heavy — typically two-person handling minimum, mechanical lifting on 12 mm panels — and should be placed only after the U-channel is fully cured and inspected. Seal between the U-channel and the slab with a non-staining structural silicone, and ensure drainage weeps at the base of the channel are kept clear so trapped water cannot freeze and stress the glass edge.

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