UHPC tiles for specifiers
A good UHPC specification is clear on performance, appearance and evidence. We help specifiers compare products by connecting them with manufacturers ready to supply the right documentation.
Key performance points
- Flexural and compressive strength with test standards
- Reaction-to-fire classification for the exact product
- Water absorption and freeze–thaw performance for external use
- Slip resistance for floors
- Structural calculations and tested fixing systems for facades
Documentation
Request technical data sheets, declarations of performance, fire reports, installation and maintenance manuals, warranties and EPDs. Our specifier checklist sets this out step by step.
Comparing proposals
When several manufacturers respond, compare on the same basis: thickness, weight per m², declared strengths and test methods, fire class, fixing system, lead time, warranty and installed cost. A simple comparison table helps the design team and client decide.
Substitution requests
Contractors may propose alternative products. Require equivalent evidence for any substitute — fire classification, strength data, samples and mock-up — and check the appearance matches the approved benchmark.
Sample specification clauses to consider
- Product: UHPC tiles/panels, fibre type stated, through-coloured
- Dimensions and tolerances: length, width, thickness, flatness and squareness
- Strength: minimum declared flexural and compressive strength, test method stated
- Fire: reaction-to-fire classification for the product as supplied, including any sealer
- Durability: water absorption and freeze–thaw performance for external use
- Appearance: match approved samples and mock-up within agreed range
- Installation: in accordance with manufacturer's instructions and approved fixing design
Quality control during production
Ask manufacturers how they control quality: incoming material checks, mix control, curing regime, dimensional inspection and strength testing of production samples. For large projects, factory visits and agreed inspection points can give confidence before delivery.
Warranty and maintenance documentation
Specify the warranty period required and what it covers, and require operation and maintenance information for the building manual — cleaning, sealing intervals, replacement procedure and spare tile storage.
Frequently asked questions
- What documents should a UHPC supplier provide?
- Technical data sheets, declarations of performance, fire classification reports, structural calculations, installation and maintenance guides, warranties and EPDs where available.
- Should strength values be characteristic or mean?
- For design, characteristic (lower-bound) values are normally used. Ask manufacturers to state which values they report.
Related
- How to specify UHPC →A practical checklist for specifying UHPC concrete tiles and cladding panels: performance requirements, documentation, samples, mock-ups and procurement.
- 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.
- Strength & thickness →How UHPC's compressive and flexural strength allow thin tiles and panels, what determines the thickness you need, and what to ask manufacturers.
- Sustainability & carbon →An honest look at UHPC's environmental profile: higher cement content per m³, less material per m², long service life, and how to compare products using EPDs.
- Architects →For architects exploring UHPC: design freedom, thin lightweight facades, technical evidence to request, and fast access to manufacturers for samples.