| Product Classification |
EN 14449 ASTM C1172 |
Confirm that the product is manufactured as laminated safety glass and that the glass and interlayer combination is suitable for the intended application. |
Construction: glass / interlayer / glass. Common interlayers include PVB, ionoplast, or other approved polymeric materials. |
Required Product datasheet, conformity declaration, batch identification, and applicable test reports. |
| Impact Safety |
EN 12600 ANSI Z97.1 CPSC 16 CFR 1201 |
Impact classification must match the location, human-impact risk, glazing position, and local code requirements. |
Specify the required impact class or category rather than relying only on nominal glass thickness. |
Full impact-test report identifying the exact glass thickness, interlayer, panel construction, and test orientation. |
| Post-Breakage Integrity |
EN 14449 ASTM C1172 |
After glass breakage, the interlayer should retain fractured glass sufficiently for the intended safety application. |
For overhead, façade, balustrade, or guard applications, require a system-specific retention assessment. |
Post-breakage retention data, pendulum or static-load test results, and installation limitations. |
| Wind and Structural Loads |
ASTM E1300 EN 16612 Local structural code |
Glass thickness and support conditions must be checked against design wind pressure, panel size, aspect ratio, and edge support. |
Provide design pressure in Pa or kPa, panel dimensions, support on two or four sides, and allowable deflection. |
Structural calculation signed by a qualified engineer, including glass make-up and boundary conditions. |
| Thermal Stress |
Project-specific engineering assessment |
Evaluate temperature differences caused by solar absorption, shading, blinds, adjacent structures, and interior heating or cooling. |
Identify heat-treated or annealed glass, solar-control coatings, edge exposure, and expected environmental conditions. |
Thermal-stress calculation and confirmation that coatings, frits, films, and frame details are compatible. |
| Light Transmission |
EN 410 ISO 9050 NFRC measurement methods |
Visible light transmission varies with glass color, coating, thickness, and interlayer. |
Request declared visible light transmittance as a percentage for the complete laminated build-up, not for glass alone. |
Spectral data or certified optical-performance report for the exact glass/interlayer combination. |
| Solar and Thermal Performance |
EN 410 ISO 52022 ISO 10292 |
Assess solar factor, shading coefficient, emissivity, and thermal transmittance as part of the complete glazing unit. |
For insulated glazing, specify the complete unit's U-value, solar factor or g-value, and shading coefficient where applicable. |
Calculation report including pane spacing, gas fill, spacer, coatings, frame assumptions, and declared environmental conditions. |
| Acoustic Performance |
ISO 10140 ISO 717-1 ASTM E90 |
Acoustic performance depends on glass thickness, interlayer formulation, air space, frame, seals, and installation quality. |
Specify weighted sound reduction index or STC rating for the complete window or façade system. |
Laboratory report for the exact laminated construction and complete framing system; do not use glass-only data for a façade claim. |
| Fire Performance |
EN 13501-2 ASTM E119 Local fire code |
Ordinary laminated safety glass is not automatically fire-rated. Fire-resistance claims require a tested and classified assembly. |
Define integrity, insulation, radiation, and required duration, such as 30, 60, or 120 minutes, where applicable. |
Fire-test and classification report covering the exact glass, interlayer, framing, seals, dimensions, and installation method. |
| UV Protection |
Project specification ISO 9050 optical data |
Many laminated interlayers reduce ultraviolet transmission, but the actual result depends on the interlayer and glass configuration. |
Request declared UV transmittance for the finished laminate when protecting interiors, artwork, flooring, or furnishings. |
Measured spectral-transmission data covering the relevant wavelength range and exact product build-up. |
| Moisture and Edge Durability |
EN 12543 series ASTM C1172 |
Edge quality, seal design, water exposure, temperature cycling, and interlayer selection affect long-term durability. |
Specify exposed or protected edges, wet-area conditions, glazing rebate depth, and required edge-seal arrangement. |
Durability test results, edge-finish requirements, storage instructions, and installation details. |
| Dimensional Tolerances |
EN 12543 series ASTM C1172 |
Confirm tolerances for length, width, thickness, squareness, flatness, holes, notches, and cut-outs. |
Submit approved shop drawings showing nominal dimensions, tolerances, hole locations, corner details, and orientation marks. |
Quality-control plan, inspection records, dimensional inspection report, and approved production drawings. |
| Visual Quality |
EN 12543 series ASTM C1036 reference for float glass |
Define acceptable bubbles, inclusions, scratches, distortion, haze, color variation, and roller-wave visibility. |
Agree on viewing distance, lighting conditions, inspection direction, sample approval, and defect acceptance limits. |
Approved physical sample, visual-inspection procedure, quality standard, and pre-shipment inspection photographs. |
| Traceability |
Supplier quality system ISO 9001 as a management reference |
Each delivery should be traceable to raw materials, production date, glass make-up, interlayer batch, and inspection results. |
Require permanent or removable identification linked to the purchase order and panel schedule. |
Mill certificates where applicable, interlayer batch records, production logs, packing list, and certificate of conformity. |
| Packaging and Shipping |
International transport practice Project packaging specification |
Packaging must protect laminated glass from impact, moisture, abrasion, and excessive heat during storage and international transport. |
Specify crate type, orientation, lifting points, moisture protection, desiccant requirements, maximum storage period, and handling labels. |
Packing specification, loading photographs, crate inspection record, shipping marks, and damage-claim procedure. |
| Commercial Qualification |
Project procurement requirements |
Compare suppliers using verified technical compliance, production capacity, lead time, export experience, and after-sales support. |
Request minimum order quantity, sample lead time, production lead time, replacement policy, payment terms, and Incoterms® 2020 basis. |
Formal quotation, technical submittal, production schedule, references for comparable applications, and warranty terms. |