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Evidence-led security specification

Security and attack-resistant glazing

Describe the security requirement and existing frame so a specialist can propose a tested glass-and-framing assembly for the actual risk.

Product guide

Security and attack-resistant glazing

Describe the security requirement and existing frame so a specialist can propose a tested glass-and-framing assembly for the actual risk.

Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.
AI-generated illustration. Appearance varies by specification; this is not an exact product sample.

Security and attack-resistant glazing: design and installation choices

Describe the security requirement and existing frame so a specialist can propose a tested glass-and-framing assembly for the actual risk.

Security glazing is specified against a defined threat and test evidence. It may combine several glass plies, interlayers and a purpose-designed retaining frame.

A security laminate, fire product and ballistic assembly are different products. Keep the exact required classification and complete-system evidence in the supplier brief.

Measurement reference

Enter the opening or approved pane reference width and height. Identify the reference and supply the security specification before manufacturing sizes are agreed.

Budget and optional extras

No reliable classified-system range was verified. Certified attack-resistant and ballistic assemblies need a specialist quote.

Published prices on the main page state their reference size, supply or fitting scope, VAT basis and source. Add-ons are individually requested in the configurator and need separate supplier pricing.

Security and attack-resistant glazing for your project

Common enquiry briefs include retail frontage, home window / door, public-facing reception, specified high-security opening. Describe the intended use and the supporting construction so the supplier can assess the complete specification. Different applications can need different glass processing, fixings and installation details.

Specify a threat, not just a thickness

Different tests cover different forms of attack. Record the required class and test standard from the project security brief.

Retain the glazing in its frame

A resistant pane is useful only when the frame, beads and anchorage support the intended protection.

What to include in a made-to-measure quote

Compare quotes using the same dimensions, quantities, finish, glass construction and installation scope. If you have a drawing or an existing specification, include its reference and identify which details still need advice.

  • Required resistance: Use the client's security assessment rather than selecting by thickness.
  • Required evidence: Ball-drop, tool-attack and ballistic tests describe different threats.
  • Frame arrangement: Glazing resistance also depends on retention and anchorage.
  • Insulating-unit construction: Confirm that the tested product can be supplied in the proposed build.
  • Acoustic requirement: Ask for evidence for the combined construction.
  • Privacy / appearance: Finishes and coatings must not invalidate the proposed system.
  • Security beads, seals and hardware: Specify compatible retention, anchors and locks.
  • Security survey and design: Agree the threat level and complete assembly before pricing.
  • What should the quote include?: Ask suppliers to itemise delivery, measurement and fitting separately.

Cut-to-size dimensions, edges and fabrication

Measure the finished glass only when the fitting allowances and support details are known. Otherwise identify the opening or existing panel you measured and request a survey. Give each different size its own basket line, with its quantity and drawing reference.

Holes, cut-outs, shaped edges and interfaces with hardware should be settled before manufacture. The finished glass construction and any coatings must suit the intended environment. A screen preview or concept photograph cannot replace a sample, survey or product-specific installation drawing.

Supplier checks before manufacture

  • Laminated glass is not automatically certified attack-resistant or bullet-resistant.
  • Request classification evidence for the exact glass build, frame, maximum dimensions and installation details.
  • The supplier must agree the final sizes, construction and compatible fittings before manufacture.
  • Confirm survey, packaging, delivery, access and installation responsibilities in the written quote.

Requesting comparable glass quotes

Save the choices you know and ask for help with the rest. The quote basket records a specification request rather than placing a manufacturing order. A firm quote needs an agreed final build, dimensions, delivery arrangements and any installation or design work.

When comparing proposals, check that glass-only supply and supply with fitting cover the same scope. Ask who provides measurement, drawings, supports, compatible hardware, lifting access and finishing work. Keep the final approved specification with the order.

Sources and further reading

Configure your glass ↓Help me chooseSee the research

Guided specification · Save multiple sizes · Supplier-confirmed quotes

Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.
AI-generated appearance concept. No security classification is demonstrated.

Designed around your project

Know what you are specifying

Security glazing is specified against a defined threat and test evidence. It may combine several glass plies, interlayers and a purpose-designed retaining frame.

A security laminate, fire product and ballistic assembly are different products. Keep the exact required classification and complete-system evidence in the supplier brief.

See indicative prices ↓

Plan your budget

What might it cost?

Published supplier examples give a starting point. Each reference below has its own size, inclusions and VAT basis. These are indicative third-party prices, not Glass Suppliers prices or a quote for your configuration.

No reliable classified-system range was verified. Certified attack-resistant and ballistic assemblies need a specialist quote.

Ask for itemised glass, processing, hardware, measurement, delivery, removal, installation and VAT. Optional extras are requests for separate pricing; they are not automatically added to these reference figures.

Your glass, step by step

Build your specification

Choose what you know. Leave the rest for a supplier to advise. Add different sizes as separate basket lines.

No account needed to configure
1. Your project

1What are you making?

2. Glass and performance

2Choose the details

Examples and guidanceLaminated glass plies and bonded interlayer

Use the client's security assessment rather than selecting by thickness.

Bonded laminated glass sectionTwo glass plies bonded in continuous contact through a solid interlayer; no sealed air gap. Interlayer thickness exaggerated.Required resistanceIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Laminated glass consists of glass plies bonded through an interlayer. The assembled section has material in contact across the bond; an interlayer is not an insulating cavity.

Record each glass ply, its treatment, interlayer type and interlayer thickness. Nominal overall thickness is their combined depth, subject to the product tolerances; the rounded trade name alone does not specify the construction.

State the required attack, ballistic or other classification from the security brief. Evidence must match the proposed glazing and supporting system; a generic laminated thickness is not a security rating.

Examples you may seeIllustrative make-up: 3 mm glass + 0.38 mm interlayer + 3 mm glass is 6.38 mm before tolerances, often called 6.4 mm nominal.A named overall thickness still needs its individual plies and interlayer confirmed.Available choices: Help me choose; Vandalism / opportunistic attack; Forced-entry requirement; Specified classification available; Security consultant review needed.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: laminated and insulating glass constructions (opens in a new tab) ↗

Use the client's security assessment rather than selecting by thickness.

Examples and guidanceLaminated glass plies and bonded interlayer

Ball-drop, tool-attack and ballistic tests describe different threats.

Bonded laminated glass sectionTwo glass plies bonded in continuous contact through a solid interlayer; no sealed air gap. Interlayer thickness exaggerated.Required evidenceIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Laminated glass consists of glass plies bonded through an interlayer. The assembled section has material in contact across the bond; an interlayer is not an insulating cavity.

Record each glass ply, its treatment, interlayer type and interlayer thickness. Nominal overall thickness is their combined depth, subject to the product tolerances; the rounded trade name alone does not specify the construction.

State the required attack, ballistic or other classification from the security brief. Evidence must match the proposed glazing and supporting system; a generic laminated thickness is not a security rating.

Examples you may seeIllustrative make-up: 3 mm glass + 0.38 mm interlayer + 3 mm glass is 6.38 mm before tolerances, often called 6.4 mm nominal.A named overall thickness still needs its individual plies and interlayer confirmed.Available choices: Help me choose; EN 356 requirement — class in notes; EN 1063 requirement — specialist only; Other project specification; Classification not yet set.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: laminated and insulating glass constructions (opens in a new tab) ↗

Ball-drop, tool-attack and ballistic tests describe different threats.

Examples and guidanceSupports, loading and the specified system

Glazing resistance also depends on retention and anchorage.

Glazing and perimeter retentionGlazed panel elevation retained around its perimeter; security, structural and other performance require evidence for the proposed system.Frame arrangementIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Glass, supports, connections and the supporting building form one design. Supply the panel geometry, spans, fixing positions, substrate and intended loads to the responsible designer.

The diagram shows a load path only. It does not prescribe a glass construction, allowable span or load. Request the proposed system’s calculations, evidence and post-breakage considerations for the intended application.

Examples you may seeMark each support and clear span on the drawing.Ask who provides structural design and verifies the existing substrate.Available choices: Help me choose; Existing frame — assess compatibility; New tested frame system; Glass-only request against approved drawing.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: GlassTime technical handbook (opens in a new tab) ↗

Glazing resistance also depends on retention and anchorage.

Examples and guidanceItemised scope for this product

Ask suppliers to itemise delivery, measurement and fitting separately.

Numbered specification scheduleA numbered schedule separates panel specification, hardware, delivery, fitting and approvals.What should the quote include?Illustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Use an itemised quote to separate the product, fabrication, hardware, survey, delivery and installation. Identify work by others and drawing approvals before manufacture.

An optional accessory request does not establish its compatibility with the proposed product. Ask the supplier to confirm the named part, included quantities and any installation requirements.

Examples you may seeSupply only: identify delivery and hardware inclusions.Survey and fitting: identify who confirms final sizes and the supporting construction.Available choices: Help me choose; Glass / product supply only; Supply and installation; Survey, supply and installation.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: glass types (opens in a new tab) ↗

Ask suppliers to itemise delivery, measurement and fitting separately.

Optional add-ons

Make it work for you

Choose optional extras independently. They are saved with this product and passed to suppliers for compatibility checks and itemised pricing.

Examples and guidanceLow-emissivity coating and glazing surface

Confirm that the tested product can be supplied in the proposed build.

Example cavity-facing low-E coatingDouble-glazed example with thin coating on a cavity-facing surface of the inner pane. Confirm permitted surface with manufacturer.Insulating-unit constructionIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

A low-emissivity coating changes radiant heat transfer at a glass surface. It is a thin surface treatment, not another glass pane. Confirm the named coating and its permitted position in the proposed glazing.

The diagram is one double-glazed example with a cavity-facing coating, not a placement rule for every coated product. Number surfaces from outdoors to indoors and obtain the manufacturer’s approved construction. Centre-pane Ug differs from whole-window Uw.

Examples you may seeSpecify the named coating and intended build-up.Ask whether a quoted thermal value applies to the glass unit or the whole window.Available choices: Help me choose; Not required; Please include in quote.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Pilkington: Optitherm low-emissivity glass (opens in a new tab) ↗

Confirm that the tested product can be supplied in the proposed build.

Examples and guidanceAcoustic glazing and the complete tested build-up

Ask for evidence for the combined construction.

Sound paths through an openingConcept sound paths through glazing and around gaps; the diagram makes no claim about internal glass layers or sound reduction.Acoustic requirementIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Sound performance depends on the complete glazing construction and the installed opening. Acoustic laminated glass uses an appropriate interlayer; an insulating unit can also combine panes and sealed cavities. These are distinct specifications.

State the noise source and request Rw with relevant spectrum terms for the exact build-up. Frame seals, ventilation paths and installation affect the result; a glass-only rating is not an installed-room guarantee.

Examples you may seeRoad noise: describe traffic and request relevant spectrum information.Quote the test report or named build-up rather than requesting an unsupported decibel reduction.Available choices: Help me choose; Not required; Please include in quote.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Pilkington: Optiphon acoustic glass (opens in a new tab) ↗

Ask for evidence for the combined construction.

Examples and guidanceAppearance and a physical sample

Finishes and coatings must not invalidate the proposed system.

Appearance sample comparisonThree illustrative colour samples, not an exact product or privacy demonstration.Privacy / appearanceIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Clear, low-iron, tinted, satin and decorative finishes alter transmitted light and appearance in different ways. Screen illustrations cannot establish the actual colour, privacy or surface texture.

Request a sample of the named product in the proposed thickness and finish. Agree which face is exposed and the orientation of any directional treatment before manufacture.

Examples you may seeCompare the sample beside neighbouring panels.Confirm the exact product name and finish, rather than a colour description alone.Available choices: Help me choose; Not required; Please include in quote.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: glass types (opens in a new tab) ↗

Finishes and coatings must not invalidate the proposed system.

Examples and guidanceSupports, loading and the specified system

Specify compatible retention, anchors and locks.

Glazing and perimeter retentionGlazed panel elevation retained around its perimeter; security, structural and other performance require evidence for the proposed system.Security beads, seals and hardwareIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Glass, supports, connections and the supporting building form one design. Supply the panel geometry, spans, fixing positions, substrate and intended loads to the responsible designer.

The diagram shows a load path only. It does not prescribe a glass construction, allowable span or load. Request the proposed system’s calculations, evidence and post-breakage considerations for the intended application.

Examples you may seeMark each support and clear span on the drawing.Ask who provides structural design and verifies the existing substrate.Available choices: Help me choose; Not required; Please include in quote.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: GlassTime technical handbook (opens in a new tab) ↗

Specify compatible retention, anchors and locks.

Examples and guidanceSupports, loading and the specified system

Agree the threat level and complete assembly before pricing.

Glazing and perimeter retentionGlazed panel elevation retained around its perimeter; security, structural and other performance require evidence for the proposed system.Security survey and designIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Glass, supports, connections and the supporting building form one design. Supply the panel geometry, spans, fixing positions, substrate and intended loads to the responsible designer.

The diagram shows a load path only. It does not prescribe a glass construction, allowable span or load. Request the proposed system’s calculations, evidence and post-breakage considerations for the intended application.

Examples you may seeMark each support and clear span on the drawing.Ask who provides structural design and verifies the existing substrate.Available choices: Help me choose; Not required; Please include in quote.Current choice: Help me choose. This is your request for the supplier to confirm.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: GlassTime technical handbook (opens in a new tab) ↗

Agree the threat level and complete assembly before pricing.

3. Sizes and fabrication notes

3Size and quantity

Enter the opening or approved pane reference width and height. Identify the reference and supply the security specification before manufacturing sizes are agreed.

Examples and guidancePanel outline and drawing

Choose the finished outline. A rectangle needs width and height; a circle needs diameter. Bespoke shapes need enough dimensions, radii and datum references to define the outline.

Panel dimension referenceFinished rectangular panel width and height. Opening dimensions are a different reference.ShapeIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

A preview is an illustration; ask the supplier to confirm the manufacturing drawing or template.

Examples you may seeRectangle or square: finished width and height.Circle: diameter, with hole or cut-out positions separately documented.Available choices: Rectangle; Shaped / drawing to follow.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: glass types (opens in a new tab) ↗
Examples and guidanceMeasurement units

1 cm equals 10 mm. Choose the units before entering sizes; keep drawing annotations in the same units.

Panel dimension referenceFinished rectangular panel width and height. Opening dimensions are a different reference.Measurement unitsIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

The form converts entered measurements to the existing millimetre specification fields.

Examples you may see120 cm = 1,200 mm.60 cm = 600 mm.Available choices: Millimetres (mm); Centimetres (cm).Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: glass types (opens in a new tab) ↗
Examples and guidanceFinished panel dimensions

Record the finished width and height of each distinct panel. For a circle use its diameter; shaped work needs a dimensioned drawing or agreed template.

Panel dimension referenceFinished rectangular panel width and height. Opening dimensions are a different reference.Reference width ( mm )Illustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

An opening, frame and finished glass are different references. Request a survey when the finished manufacturing dimensions remain unknown.

Examples you may seeOne size per basket line; quantity records identical pieces.Check units and the dimension reference before confirming manufacture.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: glass types (opens in a new tab) ↗
Examples and guidanceFinished panel dimensions

Record the finished width and height of each distinct panel. For a circle use its diameter; shaped work needs a dimensioned drawing or agreed template.

Panel dimension referenceFinished rectangular panel width and height. Opening dimensions are a different reference.Reference height ( mm )Illustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

An opening, frame and finished glass are different references. Request a survey when the finished manufacturing dimensions remain unknown.

Examples you may seeOne size per basket line; quantity records identical pieces.Check units and the dimension reference before confirming manufacture.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: glass types (opens in a new tab) ↗
Examples and guidanceQuantity of identical pieces

Quantity counts pieces with the same size and specification. Enter different sizes or constructions as separate basket lines so each requirement is retained.

Numbered specification scheduleA numbered schedule separates panel specification, hardware, delivery, fitting and approvals.QuantityIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Examples you may seeThree identical panels: quantity 3.Two distinct sizes: separate lines.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: glass types (opens in a new tab) ↗
Examples and guidanceDrawing references and unresolved details

Record drawing references, site conditions and requirements not captured in the choices. Identify anything that needs a survey or supplier confirmation before manufacture.

Numbered specification scheduleA numbered schedule separates panel specification, hardware, delivery, fitting and approvals.Project and fabrication notesIllustrative schematic, not to scale or a fabrication / fixing specification.

What your choice means

Examples you may seeNumber drawings and panel positions consistently.State access constraints and the requested work scope.Illustrative multi-ply laminated-glass edge seated in a substantial retaining frame.AI-generated product illustration from Google Flow; not an exact product sample, completed installation or proof of performance.Guardian: glass types (opens in a new tab) ↗

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Before you choose

The decisions that matter

01

Specify a threat, not just a thickness

Different tests cover different forms of attack. Record the required class and test standard from the project security brief.

02

Retain the glazing in its frame

A resistant pane is useful only when the frame, beads and anchorage support the intended protection.

Ready for a useful supplier quote

  • Laminated glass is not automatically certified attack-resistant or bullet-resistant.
  • Request classification evidence for the exact glass build, frame, maximum dimensions and installation details.
  • The supplier must agree the final sizes, construction and compatible fittings before manufacture.
  • Confirm survey, packaging, delivery, access and installation responsibilities in the written quote.

Research behind these choices

Reviewed 23 October 2026. Manufacturer guidance and supplier ordering pages inform these design questions. Agree the final construction and project requirements with your supplier.

Related project products

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Useful questions

Can I get a quote before I know every detail?

Yes. Choose Help me choose where you need advice, or request a site measurement. Suppliers can review the brief; a firm manufacturing price needs an agreed final specification.

Does adding a panel place an order?

No. It saves a specification in your quote basket. Review the basket and provide your delivery details to request supplier quotes. Your configuration does not approve the product for installation.

What should I confirm for evidence-led security specification?

Laminated glass is not automatically certified attack-resistant or bullet-resistant. Request classification evidence for the exact glass build, frame, maximum dimensions and installation details. The supplier must agree the final sizes, construction and compatible fittings before manufacture. Confirm survey, packaging, delivery, access and installation responsibilities in the written quote.

Compare related glass

Toughened glass →Acoustic (soundproof) glass →Fire-rated glass →