terrazzo supplier for contractors

A terrazzo staircase order can look deceptively simple on a size list: · Tread: 1,200 × 320 mm · Riser: 1,200 × 160 mm · Quantity: 24 sets That information may be enough for an early budget discussion. It is not enough to release production. A staircase is directional and sequential. Each tread relates to a riser, an edge condition, a stair flight, a landing and a specific installation position. An open-side tread may require different finishing from a wall-side tread. The first and last steps may connect differently from the repeated middle steps. Landing pieces, skirting and side returns may affect the dimensions of the adjacent components. For this reason, cut-to-size terrazzo stair treads and terrazzo stair risers should be reviewed as one connected package rather than as ordinary repeated tiles. Contractors can first review Aoli Stone’s factory-produced terrazzo formats for stair-component planning when considering whether the project needs full slabs, standard pieces or fabrication according to approved stair drawings.     The Practical Rule: Budget Early, but Do Not Cut Early Contractors do not need final shop drawings before asking for an initial price. An early quotation can be prepared from: · Approximate stair width · Number of steps · Expected tread depth · Approximate riser height · Material direction · Proposed thickness · Surface finish · General nosing concept · Project location · Estimated quantity The quotation should be treated as preliminary when these details are not final. Before cutting begins, the information must become more precise. Production should not be released based on assumptions that are still changing between the architect, contractor, stair installer and stone supplier. A useful distinction is: Budget information Enough to understand the approximate material and processing scope. Production information Enough to manufacture every piece without guessing its geometry, edge treatment, direction, sequence or packing group. This distinction protects both sides. It allows useful early discussion without pretending that an unfinished drawing is ready for fabrication.   1. Define the Complete Stair Package Before Counting Pieces The first question should not be: How many treads are required? A better question is: What components are included in the complete stone staircase package? Depending on the design, terrazzo stair components may include: · Straight treads · Winder or shaped treads · Terrazzo stair risers · Intermediate landings · Top landing pieces · Bottom transition pieces · Stair skirting · Side cladding · Open-side returns · Stringer-facing pieces · Wall caps · Thresholds · Nosing pieces · Anti-slip groove or insert areas · Spare pieces Not every project requires every component. The point is to identify the scope consciously. A quotation for “24 stair treads” may exclude risers, landings, skirting and exposed side pieces unless they are shown clearly. Those omitted parts often appear later, after the original price and production schedule have already been discussed. Contractor check Before requesting a final quotation, identify: · Which components are supplied in terrazzo · Which components use another material · Which parts are fabricated locally · Which parts are included in the factory order · Whether installation spares are required · Whether the top and bottom transitions need special pieces A complete component list helps prevent a visually coherent staircase from becoming a fragmented purchasing exercise.   2. Lock the Drawing Hierarchy and Revision Status International projects may involve several documents at the same time: · Architectural drawings · Structural drawings · Staircase shop drawings · Interior detail drawings · Stone fabrication drawings · Contractor size schedules · Site measurement sheets · Marked-up PDFs · CAD files · Revised email instructions The risk is not always that no drawing exists. Sometimes the risk is that too many versions exist. Before production, the contractor should establish a document hierarchy: 1. Which drawing controls the overall staircase geometry? 2. Which drawing controls the finished stone dimensions? 3. Which detail controls the nosing and tread-to-riser relationship? 4. Which document identifies exposed edges? 5. Which schedule controls quantities and piece numbers? 6. Which revision is approved for production? 7. Who has authority to approve later changes? Terrazzo stair shop drawings should show enough information to connect the design intent with individual fabricated pieces. A useful drawing package normally includes: · Overall plan · Stair elevations · Sections through the tread and riser · Landing details · Open-side details · Wall-side details · Nosing profile · Skirting or side-cladding detail · Step numbering · Material and finish references · Drawing revision Aoli Stone’s fabrication support for approved stair drawings and piece schedules can be reviewed when the project team needs to connect confirmed dimensions and processing details with cutting, edge finishing, inspection and export preparation.     Do not let the factory reconcile design conflicts silently If one drawing shows a 300 mm tread depth and another shows 320 mm, the factory should not choose whichever value appears more convenient. If the riser elevation conflicts with the size schedule, the difference should be raised and resolved. Unrecorded assumptions create false efficiency. A short clarification before cutting is normally more useful than an argument after shipment.   3. Convert Stair Geometry into a Piece Schedule Drawings explain the staircase. The piece schedule explains what must be produced. A contractor-facing stair schedule may include: Schedule Field What It Should Clarify Piece code Unique identification Building or zone Where the piece belongs Floor level Installation level Staircase number Which staircase Flight number Which stair run Step number Exact sequence Component type Tread, riser, landing, skirting or side piece Finished length Final production dimension Finished width or height Final production dimension Thickness Confirmed requirement Quantity Required number Surface finish Top or visible face finish Edge treatment Which edges are finished Nosing detail Profile, projection or groove reference Direction Left, right, front or installation orientation Drawing reference Approved source drawing Packing group Crate or installation sequence Spare status Normal piece or spare   A size list without location codes may tell the factory what to cut, but not where the pieces belong. Drawings without a piece schedule may show the design, but leave quantity and packing difficult to control. The two documents should support each other.   4. Confirm the Tread-and-Riser Relationship A tread and riser are not independent rectangles. Their finished relationship may depend on: · Whether the tread overlaps the riser · Whether the riser sits behind, below or flush with the tread · Whether the front edge is straight, eased, beveled or profiled · Whether the nosing is part of the tread or a separate element · Whether the riser face is flush with the tread edge · Whether a shadow gap or joint is intended · Whether the tread has a return on an open side · Whether the finish continues over exposed edges A small change in nosing projection can affect the apparent tread depth and the way the riser meets the tread. A small change in finished thickness can affect edge appearance, landing transitions and adjacent skirting. This is why terrazzo stair nosing details should be shown in a section or profile drawing rather than described only with terms such as “bullnose” or “small bevel.” Different factories, architects and contractors may interpret the same profile name differently. A dimensioned section, approved sample or clearly marked reference is more reliable.     Confirm these points before approval · Finished tread depth · Finished riser height · Tread thickness · Riser thickness · Nosing projection · Nosing profile · Front-edge finish · Joint position · Joint width if specified · Anti-slip groove or insert position if required · Relationship with the supporting substrate · Top and bottom transition details The stone supplier can review whether the requested profile can be fabricated in the selected material and thickness. The architect, contractor and qualified installation team should confirm that the final detail fits the stair structure, use condition, local requirements and installation method.   5. Mark Every Exposed Edge—Do Not Assume It Is Obvious A rectangular tread has several edges, but those edges do not necessarily receive the same treatment. Possible conditions include: · Front nosing edge · Open left side · Open right side · Wall-side edge · Rear hidden edge · Edge joining a landing · Edge meeting skirting · Edge meeting another tread component The factory cannot reliably infer all exposed edges from a dimension alone. For example: · A wall-to-wall tread may require only the front edge finished. · A stair with one open side may require the front and one side finished. · A floating visual design may expose several faces, although the structural support still comes from the project-designed system. · A landing piece may need different edge treatment from the repeated treads. Each piece or piece type should indicate: · Polished or honed exposed edges · Straight-cut hidden edges · Chamfered or eased edges · Special profiles · Finished returns · Unfinished bonding faces · Edge-finish direction     A useful drawing convention Use a consistent mark, line type or edge code to identify finished edges. The legend may be simple, but it should be clear enough that the factory, contractor and installer interpret it in the same way. Do not rely on a note saying: Polish exposed edges. The factory still needs to know which edges are exposed on each piece.   6. Confirm Finish and Safety Requirements Without Making Assumptions The surface finish affects visual appearance, cleaning, maintenance and how the stair is used. However, no single finish is automatically correct for every commercial staircase. The project team should review: · Interior or exterior location · Dry or potentially wet conditions · Expected traffic · Cleaning method · Required visual effect · Local project standards · Slip-related specification · Whether grooves or inserts are required · How the tread finish relates to landings and adjacent floors The supplier should not promise that a finish is universally slip-resistant without a defined product, test method, test result and project requirement. Similarly, grooves or inserts should not be added simply because they look common in a reference image. Their width, depth, position, material and purpose should be specified. A helpful supplier response is not: This finish is safe for every stair. A more reliable response is: Please provide the required finish, slip-related standard or consultant detail so the material and processing request can be reviewed against the project requirement.   7. Review Thickness Together with Size, Support and Edge Detail Thickness should not be selected as an isolated catalogue number. The suitable decision depends on: · Tread length and depth · Riser dimensions · Piece shape · Supporting substrate · Edge profile · Nosing projection · Handling and packing · Installation method · Project specification Thicker material is not automatically better. It may increase weight, freight, handling difficulty and installation demand. Thinner material is not automatically more economical if the requested size, profile or support condition makes it difficult to fabricate, pack or install. The stone supplier can comment on fabrication and handling risk. The project team must confirm structural support, substrate, installation system and final application requirements.   8. Coordinate Material Appearance Across the Staircase Factory-produced terrazzo may have a more controlled visual direction than many natural stones, but that does not mean appearance should be ignored. Contractors and designers should review: · Base-color direction · Aggregate colors · Aggregate size · Aggregate density · Surface finish · Production batch · Edge appearance · Relationship with landings and adjacent floors A tread has a broad horizontal face and a visible front edge. A riser is seen more vertically. A landing is seen as a larger field. The same material can read differently across these orientations. When the staircase connects with terrazzo flooring, wall panels, skirting or nearby custom pieces, the team should confirm whether all areas need the same visual family and production batch. Buyers can review broader terrazzo application references for commercial interiors when considering how the stair material should relate to surrounding project surfaces.   9. Build a Numbering System the Site Team Can Actually Use Piece numbering is not an internal factory formality. Its value appears when the crates arrive and the contractor must identify: · Which building · Which floor · Which staircase · Which flight · Which step · Which component · Which direction A code such as T-01 may be enough for a small staircase. For a larger project, a more structured code may be useful: Building–Floor–Stair–Flight–Step–Component–Direction For example: B1–L03–ST02–F1–S07–T–L The exact code format belongs to the project. The important point is that it should connect: · The drawing · The piece schedule · The physical label · The inspection record · The packing list · The installation sequence Terrazzo stair components that look almost identical can still have different dimensions, finished edges or directions. Numbering reduces the chance that a correct piece is installed in the wrong position.     What labels should not do Labels should not: · Cover the main finished face with hard-to-remove adhesive · Use codes that do not match the drawings · Change halfway through production · Separate the tread code from its corresponding riser without a clear relationship · Rely only on handwritten descriptions that can be misread Where temporary markings are used, the factory and buyer should agree on a practical method that does not damage the finished surface.   10. Use Selective Set-Out or Dry Review Where It Adds Value Not every staircase order requires a full factory assembly. However, a selective set-out can be useful when the order includes: · Shaped treads · Curved or irregular geometry · Open-side returns · Complex landings · Multiple stair flights · Repeated but slightly different step sizes · Special nosing pieces · Connected skirting or side cladding · High risk of sequence confusion A set-out may place treads and risers in sequence on supported surfaces so the factory can review: · Piece order · Relative dimensions · Edge direction · Nosing consistency · Material appearance · Labels · Missing pieces · Relationship with landings This is not a substitute for site installation. It is a factory-side review of the produced components against the approved information. The scope should be agreed before quotation because a full layout, selective check and basic piece inspection require different time and space.   11. Inspect the Details That Matter Before Packing A useful inspection does not merely confirm that the material “looks good.” For cut-to-size stair pieces, the review may include: Material · Approved terrazzo reference · Base color · Aggregate direction · Surface condition · Batch consistency Dimensions · Length · Tread depth · Riser height · Thickness · Shaped dimensions · Landing dimensions Fabrication · Nosing profile · Projection · Groove position · Finished edges · Open-side returns · Corners · Visible faces Organization · Piece code · Quantity · Stair flight · Step sequence · Drawing reference · Spare identification Packing preparation · Edge protection · Nosing protection · Cutout or shaped-area protection · Crate grouping · Packing list consistency     Inspection records do not guarantee that every site issue disappears. They create a clearer reference for what was produced and packed. That is particularly useful when the factory and jobsite are in different countries.   12. Pack by Installation Logic, Not Only by Crate Efficiency A piece can arrive undamaged and still create a difficult site experience if the packing order is chaotic. For staircase supply, packing instructions may group pieces by: · Building · Floor · Staircase · Flight · Installation phase · Tread-and-riser set · Landing · Spare components The packing method should protect: · Nosing edges · Finished side edges · Thin returns · Corners · Grooves · Shaped pieces · Landing edges Heavy pressure should not be concentrated on vulnerable tread-front details. The physical packing must also be realistic for forklift handling, container loading, unloading and site movement.     Questions contractors should answer before packing · Should one stair flight stay in one packing group? · Should treads and corresponding risers remain together? · Are landing pieces packed separately? · How are left- and right-hand pieces identified? · Where are spare pieces placed? · What information should appear on the packing list? · Does the unloading sequence affect crate order? · Does the site have handling limits? Packing instructions given after crates are closed are not useful. They should be discussed before packing begins.   13. Separate Factory Responsibilities from Project Responsibilities A reliable order requires clear boundaries. The terrazzo supplier may review and support · Available material format · Sample and finish reference · Confirmed piece dimensions · Thickness · Edge processing · Nosing fabrication · Groove fabrication when specified · Piece codes · Quantity · Surface inspection · Dimensional inspection · Packing and export preparation · Production photos or review records when agreed The contractor and project team should confirm · Final site measurements · Structural stair geometry · Substrate and support · Finished floor levels · Building-code requirements · Required tread and riser dimensions · Slip-related specification · Installation method · Adhesive or fixing system · Joint and movement requirements · Site tolerances · Handling and lifting plan · Final installation sequence The supplier should not be asked to approve site structure from a rendering. The contractor should not be expected to correct undocumented factory assumptions on site. Clear boundaries do not weaken service. They make the service more reliable.   14. What to Review in a Terrazzo Supplier for Contractors A terrazzo supplier for contractors should be evaluated on more than the ability to quote a price per square metre. Useful questions include: · Can the supplier distinguish treads, risers, landings and related pieces? · Can it work from approved drawings and schedules? · Will it flag conflicting information rather than guess? · Can visible edges and nosing requirements be recorded clearly? · Can piece numbers connect to drawings and packing lists? · Can dimensions, thickness and finished edges be checked before packing? · Can packing be organized by stair or installation sequence? · Are available material documents publicly reviewable? · Are supplier and site responsibilities explained clearly? · Does the supplier avoid unsupported structural or performance promises? Contractors can review Aoli Stone’s project-oriented supply approach when evaluating whether the company’s manufacturing, fabrication and communication profile fits a cut-to-size project order. Procurement teams may also review inorganic terrazzo test documents for procurement reviewwhen available documentation is part of the supplier-evaluation process. A test document does not replace a complete project specification. It is one input within a broader material and supplier review.   15. Contractor Pre-Production Release Checklist The following checklist is designed for the moment before the contractor authorizes cutting. Project scope ☐ The staircase location is identified. ☐ All stair flights and landings are included. ☐ The complete terrazzo component package is defined. ☐ Excluded or locally fabricated pieces are identified. ☐ Spare-piece requirements are confirmed. Documents ☐ The controlling architectural or shop drawing is identified. ☐ The approved revision number is recorded. ☐ Terrazzo stair shop drawings are available. ☐ The size schedule matches the drawings. ☐ Conflicting dimensions have been resolved. ☐ Production approval authority is clear. Treads and risers ☐ Finished tread depth is confirmed. ☐ Finished riser height is confirmed. ☐ Tread and riser thicknesses are confirmed. ☐ Tread-to-riser relationship is shown in section. ☐ Top and bottom transitions are detailed. ☐ Landing connections are confirmed. Nosing and edges ☐ Terrazzo stair nosing details are dimensioned. ☐ Nosing projection is confirmed. ☐ Profile shape is shown rather than named only. ☐ Anti-slip grooves or inserts are detailed if required. ☐ Every exposed edge is marked. ☐ Open-side and wall-side pieces are distinguished. ☐ Edge finish matches the approved surface intent. Material and finish ☐ Terrazzo color or sample is approved. ☐ Aggregate direction is approved. ☐ Surface finish is confirmed. ☐ Batch requirements are discussed. ☐ Adjacent landings or flooring are coordinated. ☐ Project-specific slip requirements are provided by the project team. Numbering and inspection ☐ Each piece has a unique code. ☐ Codes connect to staircase, flight and step sequence. ☐ Labels match drawings and schedules. ☐ Inspection scope is agreed. ☐ Required production photos or review records are agreed. ☐ Selective set-out or dry review requirements are defined. Packing ☐ Packing groups follow stair or installation logic. ☐ Nosing and finished edges receive suitable protection. ☐ Landing and special pieces are clearly identified. ☐ Spare pieces are separated and labelled. ☐ Packing-list format is agreed. ☐ Unloading or site-handling constraints are communicated. Responsibility ☐ Site dimensions are confirmed by the responsible project party. ☐ Structural support has been reviewed by the project team. ☐ Installation method is defined by the qualified installation team. ☐ Local code and safety requirements are confirmed. ☐ Factory scope and site scope are recorded separately. Release Production Only After the Stair Package Is Complete The purpose of a pre-production checklist is not to slow down the order. It is to separate useful early pricing from final fabrication approval. Contractors can request a preliminary quotation while drawings are developing. But cut-to-size terrazzo stair treads should not be manufactured from unresolved dimensions, vague edge instructions or an uncoordinated list of repeated sizes. A complete production package should connect: · The approved material · Terrazzo stair shop drawings · Tread and riser dimensions · Nosing and exposed edges · Surface finish · Piece numbers · Inspection requirements · Packing sequence · Responsibility boundaries When those items agree, the factory has a clearer basis for production and the contractor has a clearer basis for receiving, checking and installing the order. That is the real value of pre-production control: not a claim of zero risk, but fewer avoidable assumptions before the material leaves the factory.   FAQ 1. What information is needed to quote cut-to-size terrazzo stair treads? For an early quotation, provide the approximate stair width, tread depth, number of steps, material reference, proposed thickness, finish, nosing concept, quantity and destination. Final production still requires approved drawings, piece dimensions, edges, sequence and packing information. 2. Should terrazzo stair risers be included in the same schedule as the treads? They may be listed in the same coordinated stair schedule, but each riser should remain a separate identified component. Its finished height, width, thickness, finish, code and relationship with the corresponding tread must be clear. 3. What should terrazzo stair shop drawings show? Terrazzo stair shop drawings should show plans, elevations, tread-and-riser sections, landings, nosing, exposed edges, open sides, wall sides, skirting, piece numbers, dimensions, material, finish and drawing revision. 4. Can one standard nosing detail be used for every staircase? Not automatically. The nosing should be reviewed with the selected material, thickness, support, design, use condition, slip-related requirements and local project standards. A dimensioned profile is more reliable than a profile name alone. 5. Is a full factory dry lay necessary for every stair order? No. A full layout may not be necessary for a simple repeated stair flight. Selective set-out or sequence review may be useful for shaped treads, complex landings, open-side returns, varying dimensions or projects with a high risk of numbering confusion. 6. How should contractors choose a terrazzo supplier for contractors’ stair orders? Review whether the supplier can work from approved drawings, record edge and nosing details, inspect finished dimensions, maintain piece numbering and organize export packing by staircase or installation sequence. Structural design and site installation should remain with the qualified project team.   If you are preparing a terrazzo stair package, start by separating budget information from production information. You can review stone-order questions for contractors and project teams while organizing the first enquiry. When the project information is ready, you can send stair drawings and piece schedules for production review together with: · Terrazzo material or sample reference · Stair plans, elevations and sections · Drawing revision · Tread, riser and landing schedule · Finished dimensions · Thickness · Surface finish · Terrazzo stair nosing details · Exposed-edge markings · Step-numbering logic · Quantity and spare requirements · Inspection requirements · Packing sequence · Destination and expected schedule Aoli Stone can then review the proposed material format, fabrication information, inspection scope and export-packing requirements for a clearer project-supply discussion. Final structural support, site dimensions, slip-related standards and installation requirements should be confirmed by the responsible contractor, consultant and installation team.