UHPC tiles and panels for facades and rainscreen cladding
Facades are where UHPC earns its reputation. Panels as thin as 10–20 mm can replace natural stone or conventional precast concrete at a fraction of the weight, reducing the load on subframes and the building structure while delivering a crisp, monolithic concrete aesthetic.
Why architects choose UHPC for facades
- Low weight per m² compared with stone and standard precast, which can simplify substructures and fixings
- High compressive and flexural strength, allowing large formats at minimal thickness
- Dense, low-porosity matrix that resists freeze–thaw cycles, moisture and pollution staining
- Mineral, non-combustible composition (check each product's fire classification)
- Custom colours, textures, perforations, reliefs and 3D forms
| Material | Typical thickness | Approx. weight per m² |
|---|---|---|
| UHPC panels | 10–25 mm | ≈ 25–60 kg |
| Natural stone | 30–40 mm | ≈ 75–110 kg |
| Conventional precast | 60 mm+ | ≈ 140 kg+ |
| Fibre cement | 8–12 mm | ≈ 13–22 kg |
Ventilated rainscreen systems
Most UHPC facade tiles and panels are installed as part of a ventilated rainscreen: the panels are fixed to an aluminium or steel subframe with a cavity behind, allowing air to circulate and moisture to drain. Fixings may be visible (screws or rivets) or concealed (undercut anchors, rails or bonded brackets), depending on the manufacturer's system.
When specifying, ask manufacturers for tested system details, wind-load calculations, fixing layouts and any third-party approvals relevant to your market.
Design options
Formats range from small modular tiles to storey-height panels. Finishes include smooth as-cast, acid-etched, sandblasted, honed and textured surfaces, and integral pigments give colours from bright whites to deep charcoal. Some manufacturers also offer curved, folded or perforated elements for screens and solar shading.
What to include in your brief
- Building height, location and exposure (for wind and weather loads)
- Approximate facade area in m² and preferred panel sizes
- Finish, colour and texture references
- Fixing preference: visible or concealed
- Fire, acoustic and thermal requirements for the wall build-up
- Programme: when samples, mock-ups and supply are needed
Panel sizes, joints and setting out
Facade layouts usually start from the panel module. Many projects use a repeating module of one or two standard sizes to control cost, with bespoke panels only at corners, openings and edges. Open joints of around 6–10 mm are common in ventilated rainscreens, giving shadow lines that define the grid; closed or sealed joints are possible but less common.
Agree early whether corners will be mitred, returned (L-shaped panels cast in one piece) or expressed with a visible joint. Cast returns are one of UHPC's strengths: they give a solid, monolithic look that thin flat boards cannot match.
Coordinating the wall build-up
The UHPC panel is the outer layer of a wider system. Behind it sit the subframe brackets, insulation, a breather membrane, cavity barriers and the structural backing wall. Each layer affects thermal performance, fire safety and moisture control, so the cladding specialist, facade engineer and fire engineer should agree the system as a whole.
Thermal bridging through brackets is a common design issue; thermally broken brackets and careful bracket spacing help. Ask manufacturers whether they have worked with a particular subframe supplier and can supply tested details.
Samples, mock-ups and approvals
For any significant facade, plan for three stages: small hand samples to choose colour and finish, a range of samples showing acceptable variation, and a full-size visual mock-up on site or at the factory. The mock-up is where joint widths, fixings, corner details and colour variation are signed off, and it becomes the benchmark for the rest of the project.
Frequently asked questions
- How thick are UHPC facade panels?
- Typically 10–20 mm for tiles and panels, depending on size, fixing method and wind load. Larger or more exposed panels may be thicker or ribbed. Manufacturers confirm thickness through structural calculation.
- Are UHPC facade panels fire-safe?
- UHPC is a mineral material and many products achieve non-combustible classifications, but classification depends on the specific product and system. Always request the test reports for the exact product you plan to use.
- Can UHPC facade panels be curved?
- Yes. Single-curved panels are made in curved moulds, and some manufacturers produce double-curved elements. Expect higher mould costs and longer lead times than flat panels.
- What colours are available for UHPC facades?
- Typically natural greys, whites, sand tones and charcoal through to black, using mineral pigments. Many manufacturers develop custom colours for larger projects.
Related
- UHPC vs natural stone →UHPC concrete panels compared with natural stone such as granite, limestone and slate: weight, thickness, consistency, durability and cost.
- Fire performance →How UHPC concrete tiles and panels behave in fire, what reaction-to-fire classifications mean, and what evidence to request when specifying for facades.
- Installation & fixing →How UHPC tiles and panels are installed: adhesive bonding for interiors and floors, visible and concealed mechanical fixings for rainscreen facades, and pedestals for terraces.
- Architects →For architects exploring UHPC: design freedom, thin lightweight facades, technical evidence to request, and fast access to manufacturers for samples.
- Offices & commercial lobbies →UHPC concrete tiles and panels for office lobbies, reception areas and commercial buildings: durable, low-maintenance and architecturally striking.