Key takeaways
- A rooftop paver order includes assembly decisions below and around the visible surface.
- A pedestal rating does not certify the roof structure or insulation.
- Confirm paver compatibility, support and any required backer or tray.
- Drain access, perimeter restraint and furnishing loads belong in the approved layout.
- Manufacturer examples must stay specific to the selected system and project.
The paver color may be settled while the rooftop order is still incomplete. Below the finish are a structure, roof assembly and support system; around it are thresholds, restraints and drainage access. Those interfaces can determine whether the proposed material is ready to release.
For dealers and contractors across the Tri-State market, the practical question is: what accepted assembly does this paver order belong to? This guide uses retrieved Bison manufacturer documents as technical examples. It does not establish StoneWorks availability, a brand relationship or approval for a particular building.
Begin with the whole assembly
The Bison Versadjust specification, printed July 2023, separates structural and insulation suitability from pedestal performance. It also states that the system is not roofing ballast and does not protect the underlying roof from design wind loads.
That distinction is the starting point for a dealer inquiry. A paver and support combination is only part of the terrace. The responsible project professionals must accept how that combination interfaces with the existing or proposed roof.
Separate the decisions
| Decision | Question for the coordinated project review |
|---|---|
| Structure | What accepted loads can this building carry? |
| Roof layers | How will support contact the membrane and insulation? |
| Surface units | Which exact unit and support arrangement are accepted? |
| Elevations | How do the finish, thresholds and perimeter meet? |
| Restraint | What prevents lateral movement in this system? |
| Drainage | How will water move and drains remain accessible? |
| Furnishings | What additional loads and locations have been reviewed? |
The table is a recommended inquiry checklist, not a design calculation. It helps a dealer locate the missing decision and the party responsible for making it.
Do not convert a component rating into roof approval
A customer may present a support-product capacity and ask whether that settles the load question. It does not. The rating must be interpreted within the manufacturer’s conditions, and the roof structure and assembly require their own review.
Request the accepted structural information and roof-system requirements before describing the proposed terrace as suitable. If that review is incomplete, the quotation can identify the proposed materials and the unresolved conditions, but it should not quietly certify the building.
The same discipline applies to insulation. A broad support base or accessory does not remove the need to check the selected roof assembly. Ask which contact and protection arrangement the roofing manufacturer and project reviewer have accepted.
Confirm the exact surface unit
A gray paver is not a complete specification. Record its manufacturer, product, size, thickness, finish and intended support configuration. A change in unit or dimensions can require a new assembly review.
The Bison 2CM Paver specification identifies support products designed for that paver system and describes pedestrian-use limitations. This is an example of why a product family’s instructions cannot be generalized to every stone slab or paving unit.
Do not assume that a material accepted on grade is accepted on pedestals. An alternate should be reviewed for the elevated application, including its supports and accessories, before it enters the released order.
Keep substitution records complete
A useful substitution request identifies the currently specified unit, proposed alternate, drawing revision, support arrangement and documents supplied for review. Record the reviewer’s decision separately from the customer’s color preference.
If the alternate changes module size, ask for the revised layout and quantities. A surface unit can affect cut pieces, support positions and edge conditions. The dealer should receive the accepted revision rather than invent the new support pattern from the old takeoff.
Treat the perimeter as part of the order
The Bison FAQ identifies containment at changes in elevation or steps for stand-alone installations. Its Versadjust specification also addresses perimeter restraint. These are system-specific requirements, not a universal edge-gap instruction for all pedestal products.
For the material inquiry, request the accepted perimeter detail and clarify which party supplies each component. The finish schedule alone may not identify the necessary restraint work. A quotation should state its scope so the customer can see whether a related item is being supplied elsewhere.
Avoid casually changing an edge detail to fit a stock module. If the field dimensions differ from the accepted layout, document the condition and obtain the project response. A convenient cut is not automatically an accepted boundary solution.
Resolve elevations before selecting support quantities
The August 2023 Versadjust installation guide calls for planning the layout and checking cavity heights at thresholds, drains and high points. It also addresses cut-piece support.
Those instructions support a practical release question: are the field dimensions and elevations sufficient to select the actual components? The dealer should not derive every support height from one assumed roof elevation.
Record the layout revision and the basis of the support takeoff. If quantities are supplied by the installer, label that basis. If elevations remain to be surveyed, show the unresolved selection rather than describing the count as final.
Keep drains accessible after the surface is installed
A finished terrace must have a maintenance plan for the roof below it. Ask where the drains are, how they will be reached and which units can be removed under the accepted maintenance procedure.
Do not improvise a support over a drain from a generic illustration. Obtain the applicable roofing and pedestal detail. The project’s accepted arrangement controls; this article does not provide a universal bridge, plate or access-panel design.
A recommended handoff includes a marked layout identifying access locations, maintenance contacts and instructions for authorized removal and replacement. Keep it with the owner’s closeout information. That is a documentation recommendation, not a claim that every manufacturer requires the same handoff form.
Furnishings can change the assembly question
A planter, heavy bench, outdoor kitchen or other substantial item needs review by weight, footprint and location. Do not treat it as an aesthetic addition after the terrace order is settled.
Bison’s Versadjust specification separately addresses concentrated loads. The dealer lesson is to ask for the accepted furnishing schedule and related support decisions. Do not carry a manufacturer’s example calculation over to a different system or building.
Use a change register
| Change | Information to return to the project team |
|---|---|
| Heavier furnishing | Weight, footprint and proposed location |
| Different surface unit | Product data and revised module |
| New drain conflict | Field photograph and drawing reference |
| Changed threshold | Surveyed dimensions and elevation |
| Revised perimeter | Updated accepted restraint detail |
A change request should identify the decision needed. Once accepted, update the material register and takeoff together so the released order reflects the same revision.
Coordinate wind requirements without making a generic promise
Ask who is responsible for evaluating wind conditions and whether the selected assembly needs additional documentation or securement. Roof height and exposure cannot be resolved by a dealer’s description of paver weight.
The manufacturer’s system documents and the project reviewer establish the applicable requirements. A brochure statement is not a substitute for that project decision. Do not promise that a rooftop terrace qualifies solely because a product has a published test or a support component has a capacity rating.
Make the quotation easy to review
A complete inquiry should allow the customer to see what is specified, what is accepted and what is still assumed. Keep finish selections, assembly decisions and commercial terms in clearly identified fields.
Before release, ask for:
- The current approved layout and applicable details.
- Exact surface-unit and support-product identification.
- Accepted structural and roofing interface decisions.
- Surveyed elevations and relevant field dimensions.
- Perimeter and drain-access requirements.
- Furnishing locations and reviewed loads.
- Quantity basis, reserve-material decision and delivery constraints.
- Approval contact and procedure for later changes.
These are procurement recommendations. They do not replace engineering review, installation instructions or the roof manufacturer’s requirements. Their purpose is to prevent an attractive surface selection from being mistaken for a complete rooftop assembly.
Keep the owner handoff connected to the order
Retain the accepted product records, layout and applicable care instructions. Confirm who performs maintenance and how concerns about movement, drainage or damaged units are reported to the responsible team.
A dealer can support a better handoff by keeping the material identity and order revision clear. The owner should not have to reconstruct the product selection from an old photograph when a replacement is needed. That small documentation step makes future inquiries more precise without promising a specific replacement availability or lead time.
Frequently Asked Questions
What must be coordinated before ordering rooftop pedestal pavers?
Coordinate the selected paver and support system, roof structure, insulation and membrane interface, elevations, drainage access, perimeter restraint, wind requirements and furnishing loads. Obtain the project team’s accepted assembly before releasing materials.
Does a pedestal load rating prove that the roof can carry the terrace?
No. A support-product rating does not establish the capacity of the roof structure, insulation, membrane interface or complete terrace assembly. The responsible project professionals must evaluate those conditions.
Can any stone or paver be placed on pedestals?
No universal compatibility can be assumed. Confirm the exact surface unit, dimensions, thickness, support arrangement and any tray or backer requirements with the applicable manufacturer and project reviewer.
Why does perimeter restraint matter for a pedestal terrace?
It is part of controlling lateral movement in the selected system. Bison’s Versadjust specification requires containment; use the actual system instructions and accepted project detail rather than a generic edge-gap rule.
What should be planned around roof drains?
Plan how the installed surface and supports preserve drainage and allow inspection and cleaning. Identify drain locations and access in the coordinated layout; the project’s roofing and pedestal details govern the arrangement.
Can heavy planters or outdoor equipment be added after the paver order?
Treat them as a coordination change. Their weight, footprint and location may change support and structural requirements; obtain the responsible project team’s review before installation.
Sources & Further Reading
- Bison — Versadjust specification — July 2023 printed document date; reviewed October 3, 2026.
- Bison — Versadjust installation guide — August 2023 printed document date; reviewed October 3, 2026.
- Bison Innovative Products — FAQs — Undated manufacturer page; reviewed October 3, 2026.
- Bison — 2CM Paver specification — Manufacturer PDF; retrieved October 3, 2026; confirm current revision for selected system.
Release the coordinated order
Bring the accepted rooftop layout and material requirements to your authorized StoneWorks dealer when discussing stone and related hardscape materials. Keep the order tied to the reviewed assembly and current revision.