Aluminum Window Quality Control Before Dispatch at Techno Kol Uzi

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Every aluminum window made at Techno Kol Uzi is checked in stages: the measurements against the approved drawing, the frame and sash assembly, the glazing and hardware, and the surface finish. Only units that pass each stage are packed and sent to site. This process helps buyers receive windows that fit the opening and work as specified.

Why Quality Control Matters for Custom Aluminum Windows

Aluminum windows are made to measure, so a small error in size or assembly can make a unit hard to install or affect how it performs. Quality control is the step that catches these issues in the factory, where they are simple and inexpensive to correct, rather than on site.

At Techno Kol Uzi, checks run alongside production, not only at the end. This means problems are found while the piece is still on the workbench.

Dimensions compared with the approved drawing
Frame and sash fit and squareness
Glazing, seals and hardware function
Finish quality before packing

Measurement Check Against the Approved Drawing

The starting point is the written specification and drawing that the client approved after on-site measurement. Before cutting, the team confirms the dimensions and profile choices match that document, so that the window is made for the actual opening.

After assembly, the overall width, height and diagonal measurements are checked. Comparing diagonals is a simple way to confirm that a frame is square. Any difference from the drawing is corrected or the unit is remade before it moves to the next stage.

Frame, Sash and Hardware Inspection

Once assembled, each window is inspected for alignment and fit. The sash should open and close smoothly, sit evenly in the frame, and lock securely. Corners should be tight with no visible gaps, and fasteners should be properly seated.

Hardware such as handles, hinges, stays and locks is operated several times to confirm it works as intended. Loose or stiff parts are adjusted before packing.

Common checks at this stage

Smooth opening and closing of each sash
Even gaps around the sash
Secure locking and handle action

Glazing and Sealing Checks

The glass or panels are checked for correct size, orientation and cleanliness. Glazing beads and gaskets are inspected to confirm they are fitted fully and evenly, since these parts affect both appearance and how well the window keeps out air and water.

Sealant lines are reviewed for continuity and neatness. Any area where the seal looks incomplete is reworked so the window is protected once installed.

Surface Finish and Visual Inspection

The surface is examined under good light for scratches, dents, coating marks, uneven colour and dust inside the profile. Finishing, such as powder coating, must be even in colour and thickness across all visible faces. Protective film is kept on during handling to prevent damage.

Units with visible defects that cannot be neatly corrected are set aside. The goal is that the window looks as the client approved when it arrives on site.

Packing, Dispatch and On-Site Confirmation

Windows that pass all checks are labelled with the project and position so they can be matched to the right opening. They are packed to protect corners and finished surfaces during transport and loaded carefully.

On arrival, the installer should compare each unit with its label and the drawing before fitting. If something does not match, it is important to report it promptly so it can be resolved with the factory.

Label each unit with project and position
Protect corners and finishes during transport
Check against the drawing on arrival

Frequently asked questions

What is checked on aluminum windows before they leave the factory?

Dimensions are compared with the approved drawing, the frame and sash are checked for fit and squareness, and the hardware and glazing are tested. The surface finish is also inspected for visible defects.

How are window measurements verified?

Overall width, height and diagonals are measured after assembly to confirm the size and squareness. Any difference from the approved drawing is corrected before the unit is passed.

Can I check the windows myself before installation?

Yes, it is a good idea to check each unit against its label and drawing when it arrives. Report any mismatch or damage promptly so it can be resolved.

What should I do if a window has a defect after delivery?

Contact the factory as soon as possible with photos and the project details. Describe the issue clearly so the team can assess it and advise on the next step.

Common mistakes to avoid

A common mistake is confirming the window size only from a rough site sketch rather than an on-site measurement and approved drawing. Skipping the check on arrival can also let a mismatch go unnoticed until installation.

Our recommendation

Before ordering, confirm the openings with a careful on-site measurement and approve the written drawing. Then check each window against its label as soon as it arrives, while the packaging is still open.

Summary

Aluminum windows at Techno Kol Uzi are checked for measurements, fit, hardware, glazing and finish before dispatch. This staged inspection helps buyers receive units that match the approved drawing.

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