Before acting on “What tolerance can the façade accommodate”, confirm the controlling value and basis, datum where relevant, operating or construction condition, tolerance and margin, actual site information, adjoining interfaces and source document.

Before acting on “Can this mullion move”, confirm the current design basis and reason for the change, test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, coordinate architecture, structure and slab edge, waterproofing, fire engineering, and identify work already released, approvals, testing and the smallest safe hold point.

For “How does this membrane terminate”, provide the exact location and current references, state the governing criterion and decision required, identify affected interfaces and irreversible work, give a genuine need date and record the answer in controlled project information.

Before acting on “Can this anchor move”, confirm the current design basis and reason for the change, test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, coordinate architecture, structure and slab edge, waterproofing, fire engineering, and identify work already released, approvals, testing and the smallest safe hold point.

To answer “What slab-edge condition is required”, identify the governing requirement and authorised decision maker, then close the supporting design, specialist, evidence, inspection and contractual gates rather than relying on one review.

Before accepting “Does this glazing substitution work”, compare structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, evidence, compatibility, warranty, lead time, maintainability, interfaces and every required approval.

For “How is water drained from this junction”, provide the exact location and current references, state the governing criterion and decision required, identify affected interfaces and irreversible work, give a genuine need date and record the answer in controlled project information.

Before acting on “Can this louvre detail change”, confirm the current design basis and reason for the change, test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, coordinate architecture, structure and slab edge, waterproofing, fire engineering, and identify work already released, approvals, testing and the smallest safe hold point.

To resolve “What sealant system is required”, mark the exact location and geometry, confirm structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, access and tolerances, coordinate the condition with architecture, structure and slab edge, waterproofing, fire engineering, and close the installation and evidence requirements before release.

Before acting on “Can this façade panel size change”, confirm the current design basis and reason for the change, test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, coordinate architecture, structure and slab edge, waterproofing, fire engineering, and identify work already released, approvals, testing and the smallest safe hold point.

Before acting on “What movement allowance is required”, confirm the controlling value and basis, datum where relevant, operating or construction condition, tolerance and margin, actual site information, adjoining interfaces and source document.

For “Can we accept this site deviation”, preserve the site evidence, protect the affected work, compare the actual condition with the design basis, involve the relevant parties across architecture, structure and slab edge, waterproofing, fire engineering, then obtain a controlled disposition before concealment or irreversible work.

To close “What testing is required”, define the acceptance criterion, evidence, sample or test condition, witness point, responsible signatory, defect response and the release or handover gate.

To resolve “Can this penetration pass through the façade”, mark the exact location and geometry, confirm structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, access and tolerances, coordinate the condition with architecture, structure and slab edge, waterproofing, fire engineering, and close the installation and evidence requirements before release.

To close “How does this interface with waterproofing”, identify each discipline’s requirement and the exact physical, functional or information handoff across architecture, structure and slab edge, waterproofing, fire engineering; assign the owner, coordinated document, release gate and verification evidence.

Before accepting “Can the subcontractor use this alternative fixing”, compare structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, evidence, compatibility, warranty, lead time, maintainability, interfaces and every required approval.

To close “What needs to be inspected before close-up”, define the acceptance criterion, evidence, sample or test condition, witness point, responsible signatory, defect response and the release or handover gate.

Before acting on “Does this architectural change affect performance”, confirm the current design basis and reason for the change, test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, coordinate architecture, structure and slab edge, waterproofing, fire engineering, and identify work already released, approvals, testing and the smallest safe hold point.

To close “What is the remediation for failed water testing”, define the acceptance criterion, evidence, sample or test condition, witness point, responsible signatory, defect response and the release or handover gate.

To close “What is the final façade acceptance criteria”, identify the controlling document and responsible owner, list every design, client, statutory, contractual and evidence gate still open, then issue one position that construction and handover can rely on.

A seemingly simple request can depend on several disciplines, the client, a certifier or a specialist trade.

They can provide a view but cannot commit the client, company, regulator or another designer.

Consultants test positions privately because the interface is shared or politically sensitive.

Trust can accelerate honest coordination; history and alliances can also distort the current decision.

The apparent delay may be an unresolved design-leadership issue rather than simple inaction.

A consultant may qualify a response instead of openly contradicting a peer.

No appointment clearly owns the missing design, coordination or evidence task.

Acceptance may extend beyond available information, competence, authority or fee.

Earlier briefs, approvals and conversations may still shape the consultant response after the delivery model changes.

Commercial pressure cannot remove duties around competence, safety, compliance and records.

A genuine site need still requires adequate facts, checking and the right signatory.

The consultant may be waiting on survey, selections, another design, client direction or trade data.

Redesign, unpaid work or changed scope can appear as a technical delay.

The people producing information may not know assumptions held by project leaders.

A small design response can disrupt sequence, fabrication, access, rework and programme.

Appearance, geometry and material intent.

Slab-edge tolerances, membrane transitions.

Unique panel sizes, curves, corners, frits and one-off modules reduce repetition and increase engineering, moulds, cutting, wastage and installation complexity.

Close loads, reactions, glass, framing, anchors, movement, drainage, fire, thermal and delegated design before fabrication release.

A practical change may affect façade consultant performance, approvals and connected design assumptions and obligations beyond the immediate trade.

For “Can we rationalise panel sizes”, group requirements by structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, location and interface; retain exceptions where the design basis genuinely differs.

For “Can we standardise glazing modules”, group requirements by structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, location and interface; retain exceptions where the design basis genuinely differs.

Before agreeing to “Can we reduce custom extrusions”, confirm the original demand and margin, then test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, architecture, structure and slab edge, waterproofing, fire engineering, future flexibility and acceptance evidence.

For “Can we simplify anchors”, remove components, geometry or labour only where structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, access, testing, maintainability and adjacent packages remain protected.

Before agreeing to “Can we reduce glazing performance”, confirm the original demand and margin, then test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, architecture, structure and slab edge, waterproofing, fire engineering, future flexibility and acceptance evidence.

For “Can we use local glass”, set the non negotiable performance and approval criteria first, then compare whole of project cost rather than package price alone.

Before agreeing to “Can we reduce feature fins or screens”, confirm the original demand and margin, then test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, architecture, structure and slab edge, waterproofing, fire engineering, future flexibility and acceptance evidence.

For “Can we simplify waterproofing transitions”, remove components, geometry or labour only where structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, access, testing, maintainability and adjacent packages remain protected.

Before agreeing to “Can we reduce sealant joints”, confirm the original demand and margin, then test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, architecture, structure and slab edge, waterproofing, fire engineering, future flexibility and acceptance evidence.

For “Can we change façade material”, test the proposal against structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, interfaces with architecture, structure and slab edge, waterproofing, fire engineering, evidence and work already procured.

For “Can we use unitised instead of stick or vice versa”, set the non negotiable performance and approval criteria first, then compare whole of project cost rather than package price alone.

Before agreeing to “Can we reduce test scope”, confirm the original demand and margin, then test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, architecture, structure and slab edge, waterproofing, fire engineering, future flexibility and acceptance evidence.

For “Can we standardise louvre sizes”, group requirements by structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, location and interface; retain exceptions where the design basis genuinely differs.

For “Can we simplify slab-edge interfaces”, remove components, geometry or labour only where structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, access, testing, maintainability and adjacent packages remain protected.

Before accepting “Can we accept contractor-designed alternatives”, compare structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, evidence, compatibility, warranty, lead time, commissioning and approval status before calling it equivalent.

Before agreeing to “Can we reduce bespoke flashings”, confirm the original demand and margin, then test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, architecture, structure and slab edge, waterproofing, fire engineering, future flexibility and acceptance evidence.

For “Can we optimise panel repetition”, remove components, geometry or labour only where structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, access, testing, maintainability and adjacent packages remain protected.

Before agreeing to “Can we reduce secondary steel”, confirm the original demand and margin, then test effects on structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, architecture, structure and slab edge, waterproofing, fire engineering, future flexibility and acceptance evidence.

For “Can we simplify access and maintenance features”, remove components, geometry or labour only where structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, access, testing, maintainability and adjacent packages remain protected.

For “What façade change delivers the largest repetition saving”, test the proposal against structural wind performance, air and water control, thermal and condensation performance, movement and tolerance, interfaces with architecture, structure and slab edge, waterproofing, fire engineering, evidence and work already procured.