Aluminium Door Leaf Alignment: Hinges, Hardware, Seals and Commissioning

A door leaf that drags on the threshold, whistles at the lock stile, refuses to latch on a hot afternoon or leaks at a bottom corner is rarely suffering from one broken component. It is usually reporting a relationship: the relationship between a moving leaf and a fixed frame, and the many hardware and sealing interfaces that depend on that relationship staying within an acceptable range for the life of the building. Aluminium door leaf alignment is therefore not a cosmetic adjustment made at the end of installation. It is a design, fabrication, installation and commissioning outcome that has to be understood as a chain.

The chain begins with a frame that is set out correctly and fixed without distortion. It continues through hinges or rollers that carry the leaf’s weight and control its path, a lock that expects its keeps to be in the right place, a closer that pulls the leaf against a seal, and glazing that adds weight and stiffness to the leaf without turning it into a different shape. Every one of those elements has a tolerance, and every tolerance is cumulative. When the finished door is commissioned, what the technician is really doing is closing the loop on all of them.

This guide is written for Australian and New Zealand project teams who need to specify, install, inspect and maintain aluminium doors without relying on guesswork. It deliberately avoids quoting clearances, forces or ratings, because those values belong to the tested system and the project documentation, not to a generic article. What it does set out is the logic of alignment: what each component contributes, how the contributions interact, what commissioning should prove, and how the door can be kept in alignment after handover.

Why the leaf-to-frame relationship governs everything else

A door is a plane that has to close into another plane. The frame provides a fixed opening with a head, jambs and sill or threshold; the leaf provides a moving panel that must sit inside that opening with an even margin, compress the perimeter seals, engage the lock, and swing or slide without contact. If the two planes are parallel and the leaf is square and flat, every one of those functions is achievable with ordinary hardware. If the frame is twisted, the leaf is bowed, or the margins are uneven, the hardware is being asked to compensate for geometry it was never designed to absorb.

That is why alignment problems so often appear as hardware problems. A hinge that seems to have “dropped” may be a frame that has rotated slightly on its fixings. A lock that has become stiff may be a leaf that has twisted after glazing. A seal that leaks may be a threshold that is not level. The diagnostic discipline is to check the geometry first and the component second, because adjusting a component to hide a geometry error usually transfers the problem to another part of the door.

Square, flat, plumb and true are four different checks

Door alignment is often discussed as if it were a single measurement. In practice it is at least four separate checks, and a door can pass one while failing another. The frame can be plumb in both directions but twisted, so the head is not parallel to the sill. The leaf can be square in its own plane but bowed across its face, so it contacts the seal in the middle and gaps at the corners. The threshold can be level but not straight, so a sliding leaf binds at one end of its travel. The jamb can be straight but set too far in or out, so the leaf sits proud on one side and recessed on the other.

Each of these conditions has a different remedy, and each has to be checked at a different stage. Frame plumb and twist are installation checks, made before the leaf is hung. Leaf square and flat are fabrication and glazing checks, made before the leaf is finally adjusted. Threshold straightness and level are set-out checks, made before the frame is fixed. Once the door is complete, the available adjustment is limited, and the temptation to use hinges or rollers to force a fit is exactly where long-term callbacks begin.

The frame sets the reference, not the architrave

On many projects the visible finish line is the architrave or the internal lining, and there is a natural tendency to align the door to what is seen. The correct reference is the frame section that carries the hinges and the lock keeps, because that is the structure the hardware is fixed to. If the lining is out of wind but the frame is true, the door should follow the frame and the lining should be corrected separately. Using the lining as the datum can produce a door that looks right in elevation and leaks in section.

For external doors the reference extends to the drainage path. The frame has to sit in the opening so that water reaching the threshold or the sill can leave the assembly, and so that the leaf’s closed position compresses the seals without blocking that path. Alignment therefore has a vertical component that is not visible from the inside: the relationship between the leaf bottom, the threshold upstand and the drainage outlet. A leaf that is correctly centred in the opening but set too low can seal the drainage line as effectively as a blocked outlet.

Hinges: the primary adjustment and the primary suspect

Hinges do three jobs at once. They carry the leaf’s weight, they define the axis of rotation, and they resist the loads that try to pull the leaf out of that axis. In an aluminium door the hinge is usually fixed through the frame section and into a reinforcement or a designed fixing zone, and the leaf side is fixed in the same way. The alignment of the leaf depends on both fixings being sound and on the hinge axis being vertical and parallel to the jamb.

When a hinged leaf sags, the first question is not which hinge to adjust but why the geometry changed. A fixing that has pulled out of the frame, a reinforcement that was omitted, a hinge screwed into a section that was never designed to take that load, or a leaf that has gained weight through a glazing change will all present as sag. Adjusting the hinge in those cases can restore the appearance temporarily while leaving the underlying defect in place.

Hinge type changes the adjustment method, not the principle

Project-hinged doors, concealed hinges, pivot hinges and continuous hinges all aim at the same result: a vertical axis, an even margin and a controlled closing path. Their adjustment methods differ. Some offer vertical adjustment at the frame plate, some offer lateral adjustment at the leaf plate, some offer both, and some rely on packing or on the position of a pivot set. The principle is constant: adjust in the smallest increments that produce a measurable change, and check the effect at the head, the lock stile and the threshold after each increment, because a change at one hinge alters the load on the others.

It is also important to know which adjustments are intended for commissioning and which are intended for one-time installation setting. A hinge that is adjusted repeatedly under load can wear its adjustment mechanism, and a door that needs constant re-adjustment is telling the project that something else is moving. The maintenance response should be to investigate the cause, not simply to repeat the adjustment.

Adjustment order for a hinged leaf

A workable sequence is to start with the frame, then the hinge positions, then the lock, then the closer, then the seals. Check the frame for plumb and twist and correct any fixing that has moved. Check that the leaf is square and flat and that the glazing has not bowed it. Set the hinges so the leaf sits with an even margin and without binding at the head or threshold. Only then adjust the lock keeps, because a lock set to a misaligned leaf will have to be reset once the leaf moves. Fit or adjust the closer after the leaf swings freely, and check the seals last, since seal compression changes the force needed to close and latch.

That order matters because each later adjustment can undo an earlier one. A closer set before the hinges are correct will pull a binding leaf into a position that looks closed but loads the frame. A lock adjusted before the leaf is square will engage at the top and miss at the bottom. A seal adjusted before the threshold is set will be compressed in one place and ineffective in another.

Rollers, tracks and sliding leaves

Sliding and stacking doors replace the hinge axis with a track and a set of rollers or trolleys. The leaf hangs or runs on those components, and alignment is a matter of height, lateral position and track straightness. A sliding leaf that binds usually has one of three conditions: the track is not straight or not level, the rollers are not carrying the leaf evenly, or the leaf itself is not flat. The first is an installation issue, the second a hardware issue, and the third a fabrication or glazing issue.

Track alignment should be checked over the full travel, not only at the closed position. A track that is straight at the ends but bowed in the middle will let the leaf run freely until it reaches the bow, and the resulting complaint will be “the door sticks halfway” rather than “the door is out of alignment”. The same applies to the floor guide or bottom channel: a guide that is offset from the track will pull the leaf sideways and load the rollers continuously, which shows up later as roller wear and as a leaf that drifts out of its closed position.

Roller height and leaf weight distribution

Multi-panel sliders and stackers distribute weight across several trolleys, and the height of each trolley has to be set so that the leaf hangs level and the panels line up at their meeting stiles. If one trolley is set high, the leaf tilts, the meeting stile gaps unevenly, and the lock or the interlock cannot engage cleanly. If the rollers are set so that the leaf hangs low, it may contact the track or the threshold, and the resulting friction can be mistaken for a damaged roller.

Weight distribution also changes when glazing is replaced or when hardware is added. A leaf that was aligned before glazing will need to be checked after the glass is installed, and again after any site modification. This is one of the reasons commissioning should happen after the door is complete rather than at the point of hanging, and why the record of the final settings is valuable for future maintenance.

Sliding hardware and the closing edge

The closing edge of a sliding door carries the lock, the pull handle and often a seal that has to compress against the jamb or against another leaf. Alignment at that edge is controlled by the track, the rollers and the lock’s own adjustment. A sliding leaf that latches with a lift or a push at the handle is usually sitting out of position relative to the keep, and the correction belongs in the track and roller settings before the lock is touched. Forcing the lock to compensate will wear the keep and the latch and will make the door harder to operate.

Multipoint locks and the geometry of engagement

A multipoint lock engages the leaf at several points along its height, typically through a main latch or deadbolt plus additional hooks, bolts or rollers at the head and sill. The advantage is that the leaf is held against the frame at multiple points, which improves sealing and resistance to distortion. The disadvantage is that every engagement point has to line up at the same time. A single keep that is out of position can prevent the lock from operating even when the main latch appears to engage.

Multipoint hardware is therefore less tolerant of leaf distortion than a single-point lock. If the leaf bows, the head and sill points may engage while the middle does not, or the mechanism may operate with increasing force until it eventually jams. The correct approach is to confirm the leaf is flat and the frame is true before adjusting any keep, then adjust the keeps in the sequence recommended by the hardware manufacturer, checking the operation of the full mechanism after each change.

Keeps, strike plates and the effect of weather

Keeps and strike plates are small components with a large influence on how a door feels. A keep that is set too far in will cause the latch to bind; one set too far out will allow the leaf to rattle. The setting should be made with the leaf in its closed position under the force it will experience in service, which means with the seals compressed and the closer engaged, not with the door held open.

Weather adds a further variable. Aluminium and glass move with temperature, and a door that latches easily in the morning may be tight in the afternoon sun. The commissioning check should therefore include operation at different times of day where possible, or at least an understanding of which elevation is exposed and how the leaf behaves when warm. If the door only fails when hot, the answer may be a slightly different seal compression or a different keep setting rather than a force adjustment.

Locking points and the access-control interface

Where a door carries an electric strike, a maglock or a motorised lock, the lock’s mechanical alignment becomes part of the access-control system. An electric strike has a limited range of adjustment, and it expects the latch to arrive in a predictable position. If the leaf is out of alignment, the strike may release but the door will not push open, or it may fail to relock because the latch does not seat. The access-control commissioning should therefore include a mechanical alignment check, not only a test of the electrical release.

Closers and the forces they add

A door closer is a controlled spring. It stores energy as the door opens and releases it to close the leaf, and in doing so it applies a force to the leaf, the hinges and the frame. That force is useful when it overcomes the resistance of the seals and latches the door, and harmful when it is applied to a leaf that is binding or to a frame that is not rigid. A closer cannot correct alignment; it can only mask or amplify it.

Closer adjustment typically includes sweep speed, latching speed and, on some units, backcheck and hold-open. These are separate from alignment, but they interact with it. A latching speed set too high will slam a light leaf and can move it out of adjustment over time. A sweep speed set too low may fail to overcome seal compression, leaving the door ajar. The correct settings are the ones that close and latch the door reliably under normal conditions without excessive force at the leaf edge.

Coordinating closer, latch and seals

The closing sequence should be checked as a system: the leaf swings freely, the seal compresses progressively, the latch engages, and the closer holds the door closed without rattling. If the door needs a push to latch, the problem may be seal compression, a misaligned keep, a worn hinge or a closer that is not delivering enough force at the latch point. Adjusting the closer to solve a seal problem will increase the force needed to open the door, which may then exceed what the users can comfortably manage.

On fire-rated doorsets, closers and latches are part of the tested assembly, and their adjustment must stay within the manufacturer’s instructions. Alignment work on a fire door should not involve modifying the leaf, the frame or the hardware in ways that take the assembly outside its tested configuration. The same principle applies to acoustic doorsets, where seal compression and leaf fit are part of the rated performance.

Thresholds: the line everything is measured from

The threshold is the transition between inside and outside, and it is also the datum for the bottom of the leaf. It has to be level enough for the leaf to clear it, high enough to provide the seal and drainage detail, and detailed so that water cannot track inward. On external doors the threshold often includes an upstand, a drainage chamber and a weep path, and the leaf’s closed position has to respect all three.

Alignment problems at the threshold commonly present as a leaf that scrapes, a seal that is compressed flat at one end, or a leak that appears at the hinge side. A threshold that is not level will cause the leaf to clear at one jamb and bind at the other. A threshold that is too high will prevent the seal from compressing. A threshold that is too low will leave a gap that the seal cannot bridge. Because the threshold is set before the frame, correcting it later is disruptive, which is why the set-out check matters.

Drainage and the closed leaf

An external door is designed to shed water that reaches it. The leaf, the frame and the threshold form a system of overlaps and drainage paths, and the closed leaf must not block the path or bridge the overlap. When a leaf is adjusted, the relationship between the bottom rail, the threshold and the drainage outlet should be checked visually and, where the design allows, by a water test. A door that is aligned to the eye but drains poorly will still leak.

Seals: the quiet test of alignment

Seals are the most sensitive indicator of alignment because they are designed to be compressed, and compression is only uniform when the gap is uniform. A perimeter seal that is compressed at the head and loose at the lock stile is telling you the leaf is not parallel to the frame. A seal that is flattened at the bottom and untouched at the top is telling you the leaf is not square or the threshold is not level. Reading the seal pattern is often faster than measuring the gaps.

Seal systems in aluminium doors typically include a wipe seal at the jambs and head, a compression or bubble seal at the closing edge, a threshold seal or sweep at the bottom, and sometimes an intermediate seal at the lock stile. Each has a different tolerance for variation. Wipe seals tolerate some lateral movement but not a gap. Compression seals need consistent interference but can be over-compressed until they take a permanent set. Brush seals tolerate irregular gaps but offer less resistance to air and water.

Corner joints and continuity

The corners are where seals most often fail, because that is where the geometry changes and where the seal has to be joined. A mitred seal that is cut short will leave a gap exactly where water is most likely to enter. A corner that is stretched during installation will pull away from the frame later. The commissioning check should include a visual inspection of every corner and a check that the seal is continuous around the leaf and the frame, with no twists, cuts or voids.

Seal condition also affects alignment adjustment. A new seal is resilient and will accommodate small variations; an aged seal that has taken a set will not. When a door is re-aligned after years of service, replacing the seals may be part of the correct repair, because adjusting the leaf to suit a hardened seal will leave the door over-compressed when the seal is eventually replaced.

Glazing: weight, stiffness and the shape of the leaf

The glass in a door leaf is not a passive infill. It adds weight, which the hinges or rollers must carry, and it adds stiffness, which can hold a leaf flat or bow it depending on how it is set. A leaf that is glazed with excessive packing or with setting blocks in the wrong position can be distorted, and the distortion will show up as an uneven margin or a lock that does not engage. The glazing detail therefore has to be coordinated with the leaf alignment, especially on large or heavy leaves.

Glass selection and installation are governed in Australia by AS 1288, and safety glazing materials by AS 2208. The project’s glass schedule should identify where safety glazing is required, and the installed glass should be traceable to that schedule. Alignment work should never involve removing or replacing glass without confirming that the replacement matches the schedule and that the glazing system is reinstated as designed.

Glazing and the door’s structural behaviour

A glazed aluminium leaf behaves as a composite component even when the glass is not structurally bonded. The glass bears on setting blocks, the beads or gaskets hold it in place, and the leaf’s frame resists the loads transferred through those contacts. If the setting blocks are not positioned to carry the glass at the designed points, the leaf frame can be loaded in a way it was not designed for, and the leaf may twist. This is one reason why glazing should be completed before final alignment and why the alignment should be rechecked after glazing.

Tolerances are project-specific, and that is the point

There is no universal set of door alignment tolerances that can be applied to every project. The acceptable margin between leaf and frame, the permissible gap at the seal, the flatness of the leaf, the level of the threshold and the allowable deviation of the frame are all functions of the tested system, the project specification, the structural movement expected, the exposure of the elevation and the performance requirements the door has to meet. A tolerance that is appropriate for an internal door in a temperature-controlled building is not necessarily appropriate for an external door on a wind-exposed elevation.

The correct source for tolerances is the project documentation: the manufacturer’s installation instructions, the architect’s or façade consultant’s specification, the structural engineer’s movement allowances, and the relevant standards called up by the contract. Where those documents do not state a tolerance, the project team should agree one before installation rather than discover it at commissioning. The agreement should record what is measured, how it is measured, at what stage, and who accepts the result.

This is also where the difference between “within tolerance” and “works” becomes important. A door can be within a stated tolerance and still leak, whistle or fail to latch, because the tolerance addresses geometry and not performance. Commissioning should therefore test performance as well as measure geometry, and the acceptance criteria should include operation, latching, sealing and drainage rather than only the gap at the lock stile.

Commissioning: proving the door, not just opening it

Commissioning is the structured process of confirming that the installed door performs as specified. It should happen after the door is complete, including glazing, hardware, seals and finishes, and before the area is handed over. For a project with many doors, it should be sample-based first and then applied to every door, with the sample establishing the standard and the record showing that each door met it.

A useful commissioning sequence starts with documentation: confirm the door schedule, the hardware schedule, the glass schedule and the tested system all refer to the same assembly. Then inspect the frame and leaf for damage, check the fixings, and confirm the drainage paths are clear. Operate the door through its full travel, check the margin and seal pattern, test the lock at every engagement point, test the closer, and where applicable test the access-control interface. Record the results, including any adjustments made and the final settings.

What to measure and what to observe

Measurement should be repeatable. The same points should be checked on every door, using the same method, so that results can be compared. Observation should be equally structured: the seal impression around the perimeter, the sound of the latch engaging, the effort needed to close the door, the presence of light or draught at the edges, and the behaviour of the leaf when the closer is released. A door that passes a measurement but fails an observation is not commissioned.

For sliding doors, the commissioning should include the full travel of every leaf, the alignment of meeting stiles, the operation of the lock and the behaviour of the leaf under manual acceleration and deceleration. For hinged doors, it should include the swing, the latch, the closer and the seal compression. For both, it should include the threshold and the drainage path.

Mock-ups and first-of-type

Where a project has repetitive doors, a mock-up or first-of-type installation is the most effective way to resolve alignment before it is repeated across the building. The mock-up should use the same frame, leaf, glazing, hardware and seals as the production work, and it should be installed by the same team under the same conditions. The alignment achieved on the mock-up becomes the benchmark, and any deviation on the production doors becomes a measurable issue rather than a matter of opinion.

Maintenance: keeping the alignment after handover

Doors move after handover. Buildings settle, frames move with the structure, hinges wear, rollers flat-spot, seals take a set, and hardware works loose. Maintenance is therefore not only about cleaning and lubrication; it is about detecting change before it becomes a failure. A planned inspection should check the frame fixings, the hinge or roller condition, the lock operation, the seal condition and the threshold drainage, and it should compare the current state with the commissioning record.

The frequency of inspection should be set by exposure and use. A heavily used external door on a coastal site will need more attention than an internal door in a protected corridor, and a door that is part of an access-control system may need more frequent checks because a failure has security as well as functional consequences. The maintenance schedule should identify who is responsible, what is checked, and what constitutes a defect that requires repair rather than adjustment.

Cleaning, lubrication and what not to do

Hardware should be cleaned with products that are compatible with its finish and lubricated only with the lubricant specified by the manufacturer. Solvent cleaners can damage seals and coatings, and incompatible lubricants can attract dust or harden. Moving parts should be checked for wear rather than simply lubricated, because lubrication can hide a worn component until it fails. Seal surfaces should be cleaned without being pulled or stretched, and damaged seals should be replaced rather than patched.

Adjustment should be recorded. A door that has been re-aligned three times in a year is a door with an unresolved cause, and the maintenance record is the evidence that should trigger a review of the installation, the hardware or the application. Treating each adjustment as a fresh event without history is how buildings end up with doors that are adjusted every season and never fixed.

Access control and the electrical interface

Access control adds an electrical layer to a mechanical problem. An electric strike, a magnetic lock, a motorised lock or a door position switch all depend on the leaf arriving in a predictable position. The mechanical alignment has to be correct before the electrical device is commissioned, because the device cannot compensate for a leaf that is out of position. The interface should be coordinated between the door hardware supplier, the access-control installer and the builder, with a clear point of responsibility for the final adjustment.

The failure mode of the lock on power loss is a design decision, not an alignment issue, but it affects how the door is tested. A fail-safe device releases on power loss and a fail-secure device remains locked, and the project’s life-safety and security requirements determine which is appropriate. The commissioning test should confirm the intended behaviour, including the operation of any manual override or mechanical key, and it should confirm that the door still aligns and latches correctly after the electrical test.

Coordination checklist for the electrical door

Before the access-control commissioning, confirm that the frame and leaf have been aligned and recorded, that the strike or lock has the correct voltage and wiring, that the request-to-exit device operates, that the door position switch reports correctly, and that the door closes and latches without assistance after release. After commissioning, recheck the mechanical alignment, because the electrical installation may have disturbed the frame or the hardware.

Compliance context: NCC, ABCB and the standards

In Australia, the National Construction Code sets the performance requirements for buildings, and the Australian Building Codes Board publishes the NCC and the associated Housing Provisions. The NCC does not prescribe door alignment details; it establishes the performance framework, and compliance is demonstrated through the relevant standards, verification methods and project documentation. For windows and external glazed doors, AS 2047 is the product standard that sets out performance requirements and test methods, and AS 4284 covers the testing of building facades. AS 4666 addresses installation, and AS 1288 and AS 2208 govern glass selection and safety glazing materials.

In New Zealand, the Building Code sets the performance requirements, and SNZ TS 4211:2022 provides the specification and performance framework for windows and doors, with SNZ 4223 covering glazing in buildings. Projects in New Zealand should also confirm the relevant Building Code clauses and the consent documentation, because the compliance pathway and the required evidence can differ from the Australian process.

Compliance is not a single certificate. It is a chain of evidence from the code to the product test report, from the test report to the project-specific schedule, and from the schedule to the installed door. Alignment and commissioning are part of that chain, because a door that is not installed and adjusted as the tested system cannot be assumed to deliver the tested performance. The project’s inspection and test plan should reflect that, with hold points at frame set-out, leaf hanging, glazing, hardware installation and final commissioning.

FAQ

How can I tell whether a door needs adjustment or repair?

Start with the pattern. A door that has always been slightly tight is an adjustment issue; a door that has recently changed is a movement or wear issue. Check the frame fixings, the hinge or roller condition, the leaf flatness and the seal pattern before adjusting anything. If a fixing has pulled out or a component is worn, repair is needed before adjustment, because adjusting a loose assembly will not hold.

Why does my door only stick in hot weather?

Aluminium and glass respond to temperature, and the leaf and frame do not necessarily respond at the same rate or in the same direction. A door that binds only when warm may have insufficient margin at the lock stile or the threshold, or a seal that expands and increases friction. The commissioning check should include operation at different temperatures where possible, and the fix should be a geometry or seal adjustment rather than forcing the lock.

Can I adjust the hinges to fix a sticking lock?

Only after confirming the leaf and frame geometry. If the leaf is square and the frame is true, a small hinge adjustment may correct the lock position. If the leaf is twisted or the frame is out of plumb, adjusting the hinges will move the problem to the head or the threshold. The lock keeps should be adjusted after the leaf is correctly positioned.

Why does a sliding door jump or bind at one point?

A local bind usually indicates a track that is not straight or level at that point, a damaged roller, or debris in the track. Check the track over its full length, clean it, inspect the rollers and confirm the leaf is flat. A guide that is out of line with the track can also pull the leaf sideways and cause a bind that appears only in one direction of travel.

How often should door hardware be serviced?

The interval should be set by use, exposure and the consequences of failure, and it should be recorded in the maintenance schedule. High-use external doors, coastal sites and access-controlled doors generally need more frequent inspection. The important point is that the inspection is systematic and compared with the commissioning record, so that change is detected rather than discovered through a failure.

Does alignment affect the door’s compliance?

Yes, in the sense that the installed door must match the tested system and perform as specified. A door that is distorted, poorly sealed or unable to latch may not deliver the performance that the product standard and the project documentation assume. Commissioning records and maintenance records are part of the evidence that the installed assembly remains consistent with its specification.

Conclusion

Aluminium door leaf alignment is a systems problem disguised as a maintenance task. The leaf and frame define the geometry, the hinges or rollers define the path, the lock and closer define the closing behaviour, the seals and threshold define the envelope, and the glazing defines the weight and stiffness that all of them have to carry. When those elements are designed, installed and commissioned as one assembly, the door operates quietly and keeps operating. When they are treated separately, every adjustment solves one symptom and creates another.

The discipline that makes the difference is unglamorous: set the frame true, hang the leaf square, glaze it without distorting it, adjust the hardware in the right order, commission against recorded criteria, and maintain with history. Tolerances should come from the project documents and the tested system, not from a generic rule of thumb, and performance should be proven by operation and observation, not only by measurement.

For project teams working across Australia and New Zealand, the compliance framework provides the boundaries, but the quality of the finished door is decided on site. A door that is properly aligned is not a lucky door. It is the visible result of a chain of decisions that were each made correctly, and it will stay that way only if the chain is maintained after handover.

References

Australian Building Codes Board. National Construction Code 2025, Volume One and Volume Two, including the ABCB Housing Provisions. https://ncc.abcb.gov.au
Standards Australia. AS 2047, Windows and external glazed doors in buildings. https://www.standards.org.au
Standards Australia. AS 4284, Testing of building facades. https://www.standards.org.au
Standards Australia. AS 4666, Installation of windows and external doors. https://www.standards.org.au
Standards Australia. AS 1288, Glass in buildings – Selection and installation. https://www.standards.org.au
Standards Australia. AS 2208, Safety glazing materials in buildings. https://www.standards.org.au
Standards New Zealand. SNZ TS 4211:2022, Windows and doors – specification and performance. https://www.standards.govt.nz
Standards New Zealand. SNZ 4223, Glazing in buildings. https://www.standards.govt.nz
Ministry of Business, Innovation and Employment. New Zealand Building Code. https://www.building.govt.nz