Metal Facade Installation Sequence: Planning the Order of Work

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A metal facade installation sequence runs from verified on-site measurement, through drawings and client approval, to factory production, finishing and final fixing. Following this order keeps tolerances consistent and prevents costly rework on site. Each stage depends on the one before it, so the sequence should be agreed with the contractor at the start.

Start With Verified Site Measurement

Every reliable installation sequence begins with measurement taken on site, not from the original plans. Walls may not be plumb, openings may differ from drawings, and finished floors can shift the reference level. Measuring after the structural work is complete and before finishes are applied gives the most accurate basis for production.

Measure each opening at several heights and widths
Record the position of fixing points and embedded plates
Note any obstructions such as ducts, pipes or balcony slabs

Photos with dimensions written on them help the workshop understand the site before production begins.

Drawings and Written Specification

Once measurements are confirmed, the workshop prepares drawings showing profiles, fixings, joints and sizes. A written specification accompanies the drawings and lists materials, finishes and any engineering points. The engineer checks load and structural details, and exact values are confirmed with the engineer rather than assumed.

Reviewing the drawings with the architect and contractor before production prevents disagreements later and locks in responsibilities for each interface.

Client and Designer Approval

Approval should be given in writing before production starts. This covers the drawings, the finish colour, the fixing method and any changes agreed during design. Approval is also the moment to confirm who signs off the site measurements, since any later change can affect the whole run.

Clear approval protects both the contractor and the metalwork supplier from disputes over what was ordered.

Factory Production

In the factory, components are cut, welded, assembled and checked against the approved drawings. Pieces are dry-fitted where possible so that alignment problems appear before the work leaves the workshop. Labelling each element by its position on the facade makes installation faster and reduces mix-ups on site.

Keeping a record of the drawing reference for every piece helps the site team confirm that the right part goes to the right opening.

Finishing: Galvanizing and Powder Coating

Finishing is usually done after fabrication and before delivery. Hot-dip galvanizing protects steel against corrosion, while powder coating provides the colour and surface finish required by the design. Finishing needs to be scheduled into the timeline, because coated parts must be handled carefully to avoid scratches during transport and fixing.

Agree on the finish colour and sample early, since the coating stage cannot easily be changed later.

On-Site Installation and Fixing

Installation generally follows the order of the building, starting with the lower floors or the most accessible openings and moving upward. Fixing points are checked against the measurements before the frames are secured. Protective film or packaging should stay in place until the work near it is finished.

Check fixing points and levels before placing each element
Secure frames and verify alignment after fixing
Seal joints and remove protection at the end

Final checks confirm that the facade is plumb, aligned and ready for handover.

Frequently asked questions

Why should measurement come before production?

Building openings rarely match the original drawings exactly. Measuring on site first means the metalwork is made to the real dimensions, which avoids rework and delays.

Who approves the drawings before production?

The client, architect or designer usually approves the drawings in writing. The structural details are checked with the engineer before production starts.

Should finishing happen before or after installation?

Finishing is normally completed in the factory before delivery, so the parts arrive ready to fix. Any touch-up needed on site should be planned and agreed in advance.

In what order should the facade be installed?

Installation usually follows the building order, starting at the lower or most accessible openings and moving upward. Each element is checked for level and alignment before the next is fixed.

Common mistakes to avoid

Skipping on-site measurement or starting production before drawings are approved are the most common causes of costly errors. Leaving protective packaging on too long or fixing parts before levels are checked can also damage finishes and alignment.

Our recommendation

Agree on the full installation sequence with the contractor at the start of the project, and schedule finishing and delivery so that parts arrive when the openings are ready. Check measurements again just before production.

Summary

A clear installation sequence, from verified measurement to approved drawings, factory production, finishing and final fixing, keeps the metal facade accurate and on schedule.

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