We restore glass damaged by welding without replacing it
Professional glass restoration

We restore glass damaged by welding without replacing it

Recover glass with welding particles, pits or craters before replacing it. Specialized restoration for construction sites and after-sales service.

Welding burns are physical damage: molten metal adheres to, penetrates or leaves small craters in the glass. We restore damage ranging from moderate scatter to deep pitting when the glass remains intact.

Before replacing the glass, choose a specialized restoration.Grupo GNOVIA restores superficial and deep damage with the glass installed when the glass remains intact and safe access is available.

How does this damage occur?

  • Projection of molten metal particles
  • Metalwork performed without sufficient protection
  • Welding near façades, glazing systems, or railings
  • Adhered or embedded metallic contamination

Visible and operational consequences

  • Creates pitting, small craters, and embedded points
  • They can cause handover rejection and supervision punch-list items
  • They can delay project closeout and increase after-sales service costs
  • They affect visual quality even after the glass is cleaned

Restore before replacing

Replacement of a pane affected by welding usually occurs late in construction, when framing and finishes are already complete. Restoration avoids reopening the system and corrects the actual damage rather than treating it as a supposed stain.

On siteWith the glass installed when it remains intact and safe access is available for the work.
AssessmentWe confirm the scope using technical data and a clear description of the case.
CoverageService in Mexico and specialized service in Colombia.

Technical scope and limitations

For welding damage, there is usually an approximate limitation of 7 to 10 cm from certain edges. It is not a stain: depth, distribution and proximity to edges must be evaluated.

We do not work on broken, cracked, fractured glass or damage that structurally compromises the glass.

Where does it usually occur?

Real estate, construction, façades, glazing systems, and after-sales service.

Evaluate my case

Annealed glass and thicknessWe do not recommend restoring 6 mm annealed glass because its lower resistance makes it more difficult to withstand the process. Annealed glass 9 mm or thicker is more likely to withstand the intervention; even so, the service is performed only under the client’s responsibility and with prior acceptance of this condition. We do not work on broken, cracked or fractured glass.
Visual evidence

Welding damage: craters and embedded metal

Molten metal particles strike the glass and produce pits; they are not stains. These cases show restoration on construction sites before replacement.

Photograph of the Polarea VII and VIII project
Real case

Polarea VII and VIII

Video case documenting recovery of physical damage caused by welding on installed glass at the Polarea VII and VIII development.

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Photograph of the Origina Pedregal project
Real case

Origina Pedregal

Restoration of 10 mm tempered glass affected by welding sparks. The intervention was performed with the glass installed and documented on video.

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Photograph of the WeWork Distrito Armida project
Real case

WeWork Distrito Armida

Documented intervention on a 12+12 tempered-glass configuration affected by welding within a corporate project.

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Experience with different glass configurations

Grupo GNOVIA has documented experience restoring tempered, laminated, annealed and insulated glass in different thicknesses and access conditions. Each pane is evaluated according to its configuration, location, damage depth and proximity to the edges.

Polishing glass damaged by welding is part of a specialized restoration that removes embedded metal, corrects craters and recovers visual uniformity.

Approximate edge limitation

Welding-burn damage normally has an approximate limitation of 7 to 10 cm from certain edges, depending on the system, glass type and access.

Frequently asked questions

Is the work performed with the glass installed?

Yes. We work with the glass installed as long as it remains intact and safe access is available, avoiding removal and reducing disruption to your space.

Can tempered glass be restored?

We restore tempered glass with superficial or deep damage as long as the glass is not broken, cracked, fractured or structurally compromised.

Does the glass become distorted or weakened?

The specialized process recovers the surface in a controlled manner without distorting the glass or altering its function. Before starting, we confirm the scope using the case’s technical information.

Can deep damage be restored?

Yes. We restore deep damage when the glass remains intact; depth determines the work sequence and time, but by itself does not require replacement.

How is the price determined?

It depends on the type and depth damage, area, number of panes, access, height, location, sector and volume.

When is restoration not possible?

We do not work on broken, cracked, fractured glass or damage that structurally compromises the glass.

What happens near the edges?

For welding damage, there is usually an approximate limitation of 7 to 10 cm from certain edges. It is not a stain: depth, distribution and proximity to edges must be evaluated.

In which sectors does it occur most frequently?

Real estate, construction, façades, glazing systems, and after-sales service.

What happens if a pane cannot withstand the process?

This is very uncommon because Grupo GNOVIA personnel are trained to restore glass and work with a controlled sequence. In exceptional cases, previously damaged glass might not withstand the intervention. If that occurs, we do not charge for the service performed on that pane; however, we do not assume the replacement cost glass that was already damaged before work began. This condition is explained clearly before the work starts.

Do you need an on-site visit to confirm the service?

Not in most cases. We confirm the service remotely using the damage description, measurements, glass type, location and access. On-site visits are mainly reserved for construction projects or projects with a large volume glass.