AFI · Alu Fasad Inovasi
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Services / Curtain Wall

A curtain wall contractor for high-rise buildings.

We calculate, fabricate, and install aluminium and glass curtain wall. Wind load and water penetration are worked out at the design stage, before the facade shape is locked.

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Send your facade drawing over WhatsApp. You get technical questions back, not a form.

Trusted by
  • Agung Sedayu Group
  • Pulau Intan
  • Jaya Konstruksi
  • Wijaya Karya
  • PP (Persero)
  • Atlas Construction
01

What a curtain wall is

The term gets used for any glass facade. Its technical meaning is narrower, and the difference shows up in the cost.

Curtain wall axonometric: a mullion and transom frame standing outside the floor slabs, tied back through brackets.MULLIONTRANSOMGLASSFLOOR SLABBRACKET

A curtain wall is a glass and aluminium outer wall hung from the outside of a building. It carries its own weight, the wind, and the rain, but none of the floors or the roof. Take the curtain wall off and the building still stands.

The frame is aluminium: upright bars called mullions, and cross bars called transoms. Together they form a grid, and each opening in that grid takes one panel.

The panel is usually glass. It can also be aluminium composite panel, metal panel, or stone. The gaps between panels are closed with rubber gaskets and sealant, and the whole frame is tied back to the floor slab edge with steel brackets.

What drives the cost is usually not the area of the facade. It is four other things: the height of the building, the type of glass, the distance between floors, and the shape of the facade. We calculate all four before quoting a number.

02

Stick or unitized

Two ways of assembling the same system. The choice follows building height, schedule, and how far panels repeat.

Assembly comparison: stick is built from loose members on site, unitized arrives as a finished panel.STICK SYSTEMASSEMBLED ON SITEUNITIZED SYSTEMFACTORY-GLAZED, SET PER FLOOR

Stick system

Mullions, transoms, and glass are assembled piece by piece on site. Material cost is generally lower and site changes are easier to absorb.

Suits mid-rise buildings, facades with many variations, and projects whose design is still moving.

Unitized system

Panels are assembled and glazed in full at the factory, then installed floor by floor. Precision holds better because assembly happens in a controlled environment, and site installation is far quicker.

Suits high-rise buildings with repeating panels, difficult site access, and tight schedules.

03

What we do

One team from calculation to handover. No hand-off between parties midway.

01

Calculation & Value Engineering

We review the architect's design, calculate wind load and frame structure, then propose alternatives that cut cost without lowering performance.

02

Shop drawings & approval

Detailed drawings for every joint, bracket, and interface with the structure, prepared for consultant and owner review.

03

Fabrication

Aluminium profiles come from the extrusion producer backing us, then are cut and fabricated in AFI's own workshop.

04

Testing, where the building calls for it

Performance Mockup Unit testing is triggered by height and exposure, so not every project goes through it. Where yours does, our team is experienced in running it at accredited laboratories, covering air leakage, water penetration and structural load.

05

Installation & handover

AFI's project team supervises scheduled installation and quality control on site through to handover.

Our core team has spent decades calculating and installing high-rise facades.

04

Questions we get asked

Most come from owners and project teams comparing systems.

Section: a curtain wall runs continuously outside the slab edge, a window wall sits between two slabs.CURTAIN WALLCONTINUOUSFLOOR SLABBRACKETOUTSIDE THE SLAB EDGEWINDOW WALLONE UNIT / FLOORBETWEEN THE SLABS
What materials is a curtain wall made of?
The frame is extruded aluminium, as vertical mullions and horizontal transoms. The infill is glass, aluminium composite panel, metal panel, or stone. It is completed by structural sealant, gaskets, and steel brackets tying the frame back to the building. That material combination determines most of a facade's cost and weight.
How thick is a curtain wall?
Curtain wall glass is generally 8 to 12 mm as a single layer, and thicker where laminated or double glazing is used. Mullion depth has no standard figure: it follows the floor-to-floor span and the wind load at your building's height, so the number comes out of the calculation.
What is the difference between curtain wall and window wall?
A curtain wall sits outside the floor slab edge and runs continuously past several floors, hung from the building structure. A window wall sits between two floor slabs and is supported by the slab beneath it, one unit per floor. Because it passes the slab edge, a curtain wall needs fire safing at every floor and gondola access for cleaning. Which one suits a building is read from its height, wind load, slab arrangement and facade shape, not from the name of the system.
What is a window wall?
A window wall is a glazed facade system installed between two floor slabs, with its load carried by the slab below. Because it is installed from inside floor by floor, it does not always require a gondola. A cost comparison only becomes useful once both systems are scoped the same way.
When should unitized be used instead of stick?
Unitized usually makes sense above roughly ten storeys, where panels repeat and the installation schedule is tight. Stick makes sense where the facade design varies a lot or may still change. We calculate both when a project sits on the boundary.
What is the difference between tempered and laminated glass?
Tempering treats one pane; lamination builds two or more panes onto an interlayer. Tempering heats and rapidly cools the pane, leaving its surfaces in compressive stress, so it is stronger in bending and breaks into small blunt fragments. The interlayer holds the fragments bonded to itself, so broken glass does not fall as loose shards. The two combine; facade plies are normally heat-strengthened, not fully tempered: tempered fragments lose interlock, letting a broken laminate sag from its frame, while larger heat-strengthened fragments stay keyed in place. Unlaminated, heat-strengthened glass is not safety glass. We set each panel's treatment from its height in the facade and what is below it.
What is Low-E glass?
Low-E means low emissivity, an insulation property of the glass rather than solar control by itself. A Low-E coating carries both an emissivity figure and a solar-gain figure. On its own it lowers solar heat only a little, while a coating or glass tuned for solar control cuts it materially. Body-tinted heat-absorbing glass and hard-coat reflective glass, durable on an exposed surface, give that control in single glazing. High-performance sputtered coatings must sit in a sealed cavity, not on an exposed surface, so double glazing is a reasoned cost step rather than the price of solar control. We propose the glass specification and lock it in the shop drawing.

Have a facade drawing that needs recalculating?

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