Blast Resistant Windows

Blast-Resistant Windows are engineered glazed assemblies designed to protect people, equipment and interiors from the hazards of an airblast (pressure wave), flying glass fragments (spall) and secondary impact. Our windows combine tested glazing laminates, engineered frames and robust installation details so building façades remain a survivable environment after an explosive event while also meeting architectural, thermal and acoustic requirements.

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Product Features

  • Performance options: Custom-engineered to project blast input (e.g., 0.5–2.0 bar reflected pressure or user-specified peak/impulse).
  • Glazing assemblies: Laminated glass stacks with PVB or ionoplast interlayers; optional polycarbonate inner layer for spall control.
  • Thickness range: Typical overall glazing stack from ~25 mm to 150+ mm depending on required rating (final thickness determined by engineering analysis).
  • Frame types: Reinforced steel frames (standard), thermally broken aluminum frames (where thermal performance is critical), and concealed structural frames for curtain wall integration.
  • Seals & gaskets: Compression gaskets with high-temperature tolerance; intumescent/smoke seals available where fire/smoke performance is required.
  • Vision sizes: Custom; models available for full-height and partial-vision openings.
  • Finishes: Powder coat, anodize, stainless steel cladding, or architectural cover caps to match façade aesthetics.
  • Ancillary options: Integrated blinds, sun control coatings, low-E coatings, acoustic interlayers, and integration for access control/sensors

 

 

Typical Construction — Materials & Systems

GuardianWalls blast windows are engineered multi-layer systems tuned to the threat level and façade requirements. Typical components include:

  • Outer lite (optional): Heat-strengthened or tempered glass to provide initial impact resistance and weather durability.
  • Ballistic / blast laminate stack: Multiple layers of glass bonded with interlayers (PVB, ionoplast such as SentryGlas®) to retain fragments and absorb energy. SentryGlas-type ionoplast interlayers are commonly used where higher rigidity and tear resistance are needed.
  • Spall mitigation layer: Polycarbonate or hard coated polymer interlayer (or an interior polycarbonate facing) to capture spall and reduce inward debris.
  • Edge capture & glazing method: Channel-glazed, captured with continuous gaskets and perimeter mechanical retention designed to transfer loads into a stiff frame/substructure.
  • Frames & substructure: Heavy steel or reinforced aluminum frames with engineered anchors/backup plates; frame stiffness and connection design are critical to performance.

Key Benefits & Intended Use

  • Limits blast-pressure penetration and prevents hazardous glass fragmentation into occupied spaces.

  • Preserves egress paths and life-safety zones by maintaining glazing integrity or controlled failure modes.

  • Integrates with façade systems, HVAC penetrations and security glazing requirements (CBRN, ballistic, fire where required).

  • Suitable for: government & diplomatic facilities, critical infrastructure (power, ATC), petrochemical plants, transport hubs, financial institutions, and high-risk commercial buildings.