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Choosing glass thickness is not simply a matter of selecting the thickest available pane. The correct specification depends on the application, panel size, support arrangement, edge condition, exposure to impact, fixing method and whether the glass is being used as a safety-critical component.
A shower screen, for example, has very different requirements from a shopfront. A tabletop is loaded differently from a balustrade, while a large partition may need to balance rigidity, weight, acoustic performance and appearance.
For projects in Kenya, these considerations become even more important because glass is used across residential, commercial, hospitality and office developments in environments with different levels of heat, humidity, traffic and exposure.
This glass thickness guide Kenya buyers can use provides a practical starting point for understanding common specifications, including the important difference between 8mm vs 10mm glass.
Glass thickness is the physical depth of the glass pane, normally measured in millimetres. Thickness affects rigidity, weight, handling and resistance to bending, but it does not by itself determine whether a glass installation is safe.
Common architectural glass thicknesses include:
Some applications may use laminated glass made from multiple layers, meaning the total thickness can be expressed differently from a single monolithic pane.
For example, a laminated specification could consist of two glass layers separated by an interlayer.
The specification therefore needs to describe not only thickness but also:
This is why simply saying "I need thick glass" is not enough for a professional quotation.
Increasing glass thickness generally increases stiffness and reduces deflection under comparable conditions, but it also increases weight and cost. The correct thickness should therefore be selected according to the complete installation rather than thickness alone.
A thicker pane can provide greater rigidity.
However, thicker does not automatically mean suitable.
For example, a large unsupported glass panel may require a particular combination of thickness, heat treatment and support rather than simply increasing the thickness.
Similarly, a balustrade is a safety-critical application where the complete system must be considered.
Thickness is only one part of the specification.
Other factors include:
The following table provides a practical reference for common architectural and interior applications, but final thickness should be confirmed against the panel dimensions, support system, safety requirements and applicable project standards.
| Application | Common glass thickness range | Typical glass specification | Main reason |
|---|---|---|---|
| Small framed partitions | 5–6mm | Toughened or suitable safety glass | Lightweight separation |
| Office partitions | 8–10mm | Toughened or laminated safety glass | Rigidity and safety |
| Shower screens | 8–10mm | Toughened safety glass | Rigidity and impact safety |
| Shower doors | 8–10mm | Toughened safety glass | Door movement and durability |
| Small tabletops | 6–8mm | Toughened glass where appropriate | Everyday loading |
| Larger tabletops | 8–12mm+ | Toughened/laminated as specified | Greater span and rigidity |
| Shopfronts | 10–12mm+ | Toughened or laminated safety glass | Impact, size and exposure |
| Glass doors | 10–12mm | Toughened safety glass | Hardware and door loading |
| Internal balustrades | 10–12mm+ | Toughened/laminated system | Fall protection |
| Frameless partitions | 10–12mm | Toughened or laminated | Rigidity and appearance |
| Large fixed panels | 10–12mm+ | Project-specific safety glass | Panel size and support |
| Skylights/overhead glazing | Project-specific | Usually laminated safety glazing | Overhead safety |
| Large panoramic glazing | Project-specific | Laminated/toughened specification | Size, wind and structural design |
These ranges are not universal design prescriptions.
A professional glass supplier or qualified designer should assess the actual installation before a safety-critical specification is finalised.
Neither 8mm nor 10mm glass is universally better; the appropriate choice depends on the application, panel dimensions, support and required performance. For many medium-sized interior applications, 8mm can provide adequate rigidity, while 10mm may be preferred where greater stiffness or a larger panel is required.
This is the central question behind 8mm vs 10mm glass.
The difference may appear small because it is only 2mm.
However, that difference can affect:
A 10mm pane is heavier than an otherwise identical 8mm pane.
This matters when selecting hinges, channels, clamps and support systems.
The correct decision therefore considers the entire installation.
8mm glass is a practical specification for many medium-duty architectural and interior applications where the panel dimensions and support conditions allow it. It is commonly considered for shower screens, partitions and other applications where more rigidity than thinner glass is desirable.
Typical applications can include:
The suitability depends on the panel size and design.
For a small shower panel, 8mm can provide a solid balance between rigidity and weight.
For a very large unsupported panel, the same thickness may not be appropriate.
10mm glass provides greater thickness and stiffness than 8mm glass and is commonly considered for larger shower screens, partitions, doors and other architectural applications. The additional thickness can be useful where increased rigidity is needed, but it also adds weight.
Applications can include:
The important point is that 10mm is not automatically a substitute for a structural design.
A 10mm pane can still be unsuitable if the panel is too large or inadequately supported.
The practical difference between 8mm and 10mm glass is primarily increased thickness, stiffness and weight, with 10mm generally providing greater rigidity. The correct option depends on panel size, support, hardware and application rather than thickness alone.
| Feature | 8mm glass | 10mm glass |
| Thickness | 8mm | 10mm |
| Relative weight | Lower | Higher |
| Relative rigidity | Lower | Higher |
| Handling | Easier | Heavier |
| Hardware loading | Lower | Higher |
| Typical interior use | Common | Common |
| Shower applications | Suitable for many designs | Suitable for larger/heavier designs |
| Cost | Generally lower | Generally higher |
| Large-panel suitability | Project dependent | Project dependent |
The table should be used for preliminary comparison rather than final structural selection.
8mm and 10mm toughened safety glass are common specifications for shower screens, with the appropriate choice depending on panel size, configuration, hardware and installation method. The glass should be specified as safety glass suitable for the application rather than selecting thickness alone.
Shower screens experience regular use.
They can be exposed to:
A frameless shower door also places specific demands on the glass and hinges.
The larger the door or panel, the more important the complete design becomes.
A shower screen should therefore be assessed based on:
Toughened glass is commonly used for shower screens because heat treatment increases its strength compared with ordinary annealed glass and changes its fracture behaviour. If it breaks, properly toughened safety glass is designed to fragment into smaller pieces rather than large sharp shards.
This is particularly important in wet areas where people are standing close to the glass.
However, toughened glass has an important characteristic:
Once toughened glass is significantly damaged, it cannot normally be cut or drilled afterward.
Holes and edge work must generally be completed before the toughening process.
This means measurements need to be accurate before manufacturing.
Glass balustrades are safety-critical installations, so their specification should not be based on thickness alone. Depending on the system, glass thickness may commonly fall around 10–12mm or more, but the required glass construction, lamination, support and design loads must be assessed for the specific installation.
Balustrades are different from ordinary partitions.
Their purpose is to provide a protective barrier at an edge.
Potential loads can come from:
The fixing system is equally important.
Possible systems include:
A glass balustrade should therefore be designed as a complete system.
Laminated safety glass can provide an important safety characteristic because the interlayer helps retain broken glass after fracture. This can be particularly relevant to applications where maintaining a barrier after glass breakage is an important design consideration.
A laminated glass assembly can contain:
If one or both glass layers fracture, the interlayer can help hold the fragments together.
This behaviour differs from monolithic tempered glass.
The correct specification depends on the balustrade design and applicable requirements.
Shopfront glazing commonly uses thicker safety glass than small interior partitions because shopfronts can involve larger panels, greater public exposure and higher impact considerations. 10mm and 12mm specifications may be considered in some designs, but the final requirement depends on panel size, framing and loading.
Shopfronts are exposed to frequent activity.
They may encounter:
A large shopfront panel also behaves differently from a small interior partition.
The glass specification should therefore consider the entire storefront system.
For commercial projects, it is especially important to provide the glass supplier with the exact opening dimensions.
Glass doors commonly use toughened safety glass around 10–12mm in many architectural applications, although the exact specification depends on door dimensions, weight, hinges, pivots and hardware. Door glass must be selected together with the hardware system.
A glass door moves.
That creates different loading conditions from a fixed partition.
The door must support:
If the glass is too heavy for the selected hardware, the installation can become difficult to operate or maintain.
The glass thickness and hardware should therefore be designed together.
Office partitions commonly use 8mm or 10mm glass depending on panel dimensions, framing and acoustic or privacy requirements. Larger frameless panels may require thicker or laminated constructions depending on the project design.
Office glass partitions are increasingly used in:
The specification may also include:
Thickness alone does not determine acoustic performance.
Glass construction, air gaps, seals and framing can all influence sound transmission.
Glass tabletops commonly use 6–10mm or thicker glass depending on table dimensions, support arrangement and whether the glass is framed or supported at specific points. Larger tabletops require careful consideration of span, deflection and edge protection.
A tabletop behaves differently from a vertical partition.
It may be subjected to:
The support structure is critical.
A small glass tabletop fully supported around its perimeter can have different requirements from a large tabletop supported only at four corners.
For tabletops, edge finishing is also important.
Edges may be:
The choice depends on design and safety considerations.
No. Thickness is only one part of glass performance. Heat treatment, lamination, glass quality, panel dimensions, support conditions and installation can have major effects on the suitability of a glass assembly.
This is one of the most important principles in architectural glazing.
For example:
A 10mm annealed pane is not automatically a better safety choice than a properly specified 8mm toughened pane.
Similarly, simply increasing thickness may not solve a design problem caused by inadequate support.
The correct question is:
What glass specification is appropriate for this particular installation?
Not:
What is the thickest glass available?
Annealed, toughened and laminated glass have different manufacturing processes and safety behaviours. Choosing between them requires consideration of the intended application, impact risk, dimensions, support and applicable safety requirements.
| Glass type | Basic construction | Main characteristic | Typical applications |
| Annealed | Conventional glass | Can fracture into larger shards | Some low-risk applications |
| Toughened | Heat-treated glass | Increased strength and fragmentation behaviour | Shower screens, doors, partitions |
| Laminated | Glass + interlayer + glass | Fragments remain bonded | Windscreens, selected balustrades and safety applications |
| Toughened laminated | Multiple treated layers + interlayer | Combines properties of both | Higher-performance architectural applications |
The correct choice should be based on the project.
A small 10mm panel and a very large 10mm panel do not necessarily have the same performance because unsupported span affects deflection and loading. Glass specification should therefore account for both thickness and panel dimensions.
Consider two panes:
Both could theoretically be 10mm thick.
But their behaviour under loading will be very different.
The larger panel has a much greater unsupported area.
This is why a glass supplier needs accurate measurements.
Information such as:
helps determine the appropriate specification.
A pane supported on several edges generally behaves differently from a large panel supported at only a few points. Frames, channels, clamps and point fixings can therefore influence the glass specification and should be considered together with thickness.
For example, a framed panel may have continuous support around its perimeter.
A frameless panel may rely on:
Each arrangement transfers loads differently.
This is particularly important for:
Glass becomes heavier as thickness increases, which affects transportation, handling, installation and hardware selection. For a project with many large panes, the additional weight of thicker glass can become a significant practical consideration.
As a simple rule, increasing thickness increases the mass of the glass for the same panel dimensions.
This affects:
A larger glass door made from 12mm glass can be considerably heavier than an equivalent 8mm panel.
The hardware must therefore be rated for the resulting load.
Glass itself does not have a conventional "wear layer grade" like some flooring products do; its surface performance is instead related to the glass type, treatment, coating and intended use. For architectural glazing, the specification should focus on thickness, safety treatment, coating and application rather than applying flooring-style wear-layer terminology.
This distinction matters when preparing a glass specification table.
For flooring, wear layers such as AC grades or polyurethane coatings can be important.
For glass, relevant specifications can include:
This prevents confusion between different building-material categories.
A complete glass specification should identify the glass type, thickness, dimensions, safety treatment, finishing, fixing requirements and application. For safety-critical installations, the specification should also account for design loads and the complete support system.
A useful specification can include:
This information reduces misunderstandings between the customer, fabricator and installer.
When comparing 8mm vs 10mm glass, specify the application and panel dimensions first, then compare the performance, weight and hardware requirements of each option. Do not select the thickness solely because one number is larger.
For example:
Shower screen:
"8mm toughened clear safety glass, panel size approximately X × Y, with polished edges and specified hardware."
or:
Large shower enclosure:
"10mm toughened clear safety glass, panel dimensions approximately X × Y, with compatible hinges and fittings."
The exact specification should be confirmed after measurements.
Glass specification in Kenya should consider the local environment, including heat, humidity, rainfall, sunlight, dust and building use. These conditions do not automatically dictate a particular thickness, but they can influence the choice of coatings, seals, hardware and overall installation design.
For example, a shower enclosure in a coastal location such as Malindi will experience a humid environment.
A shopfront in Nairobi may experience:
Commercial installations can experience significantly greater usage than residential installations.
The glass thickness should therefore be considered alongside the environment and intended duty.
In coastal areas such as Malindi, humidity and salt-laden air can affect metal hardware and seals over time, making appropriate material selection and maintenance important. Glass thickness itself does not prevent corrosion, so the complete glazing system should be considered.
For shower screens and other wet-area installations, pay attention to:
Appropriate hardware selection and regular maintenance can help extend the service life of the installation.
Glass should be measured carefully because tempered glass cannot normally be cut or drilled after heat treatment. Incorrect measurements can therefore result in wasted material, installation delays and additional costs.
Before manufacturing, confirm:
For doors and shower screens, even small dimensional differences can affect operation.
A professional site measurement can reduce these risks.
It may be possible in some applications, but panel dimensions and support conditions must be assessed before approving 8mm glass for a large panel. The appropriate thickness and glass construction should be determined from the complete design rather than panel size alone.
Large panels can introduce issues involving:
The solution may involve increasing thickness, changing glass construction, adding support or using a different glazing system.
The correct answer depends on the design.
No. A 10mm pane is not automatically suitable for every architectural application. Some installations require thinner glass for weight or hardware reasons, while others require laminated or specially designed systems regardless of thickness.
Examples include:
These applications should be designed according to their specific requirements.
Before ordering architectural glass, confirm the application, panel dimensions, glass type, thickness, safety treatment, fixing method and required features. For balustrades, doors, shopfronts and other safety-critical installations, obtain a project-specific specification rather than relying on a generic thickness chart.
Identify the application.
Measure width.
Measure height.
Confirm panel quantity.
Choose glass type.
Confirm thickness.
Determine whether toughened glass is required.
Determine whether laminated glass is required.
Confirm clear, tinted or patterned finish.
Confirm edge finishing.
Identify holes and cut-outs.
Confirm hardware.
Check support conditions.
Confirm door or panel weight where applicable.
Check installation location.
Consider humidity and environmental exposure.
Confirm delivery requirements.
Request a complete quotation.
Confirm installation requirements.
8mm toughened safety glass can be suitable for many shower-screen configurations, provided the panel dimensions, support and hardware are appropriate. The exact specification should be confirmed for the individual enclosure.
Not automatically. 10mm provides greater thickness and rigidity, but 8mm may be entirely appropriate for some shower designs and is lighter and often more economical.
It can be part of a balustrade specification, but thickness alone cannot establish suitability. The glass construction, support system and design loads must also be considered.
There is no universal thickness because shopfront panel size, framing, exposure and loading vary. Thicker safety glass may be appropriate for larger or more exposed installations.
10mm and 12mm toughened safety glass are common considerations for many architectural glass doors, but the correct specification depends on door dimensions and hardware.
Generally, an otherwise identical 8mm pane uses less material and weighs less than 10mm glass, which can make it less expensive. However, the final price also depends on processing, dimensions, hardware and installation.
Greater thickness can improve stiffness and resistance to certain loads, but it does not make glass unbreakable. Glass type, heat treatment, support and installation remain important.
No. Toughened glass normally needs to be cut, drilled and edge-finished before it undergoes the toughening process. Accurate measurements are therefore essential.
The two have different characteristics rather than one being universally stronger. Toughened glass provides increased strength and a distinctive fracture pattern, while laminated glass provides an interlayer that helps retain fractured pieces.
10mm glass is 2mm thicker and generally provides greater stiffness, but it is also heavier. The correct option depends on the application and support system.
The best glass thickness is the one that matches the application, dimensions, safety requirements, support system and intended use. For many interior applications, 8mm and 10mm are useful specifications to compare, while balustrades, shopfronts, large doors and specialist glazing require more detailed assessment.
For homeowners, contractors, architects and developers, the most useful approach is to provide complete information before requesting a quotation.
Tell the supplier:
This allows the supplier to recommend a specification based on the actual application rather than simply selling the thickest available pane.
Ali Glaziers provides glass and hardware solutions for customers in Nairobi, Eastleigh, Malindi and other parts of Kenya. Customers can visit the Ali Glaziers website to explore available products and services or contact Ali Glaziers for a quotation.
For customers also working on wider building projects, Ali Glaziers provides access to structural products, sanitary products, locks and security products and home appliances.
Business customers can also request eTIMS-compliant invoices, supporting proper documentation for business purchases and accounting records.
Do not choose architectural glass by thickness alone. A correct specification combines thickness with glass type, safety treatment, dimensions, support, hardware and application requirements, ensuring the final installation is appropriate for how the glass will actually be used.
The difference between 8mm and 10mm may look straightforward, but the right choice depends on the project.
For a shower screen, consider the panel dimensions, hinges and safety treatment.
For a balustrade, consider the complete barrier system and required design loads.
For a shopfront, consider panel size, framing and exposure.
For a tabletop, consider span and support.
For a partition, consider rigidity, appearance and acoustic requirements.
For large or unusual glazing, obtain a project-specific specification rather than relying solely on a generic chart.
When purchasing glass in Kenya, also consider accurate measurement, fabrication quality, edge finishing, hardware compatibility and installation.
A well-specified glass installation is not necessarily the thickest one. It is the one in which thickness, glass construction, safety characteristics and support system work together for the intended application.
For professional enquiries, visit the Ali Glaziers online catalogue or contact the team.
Ali Glaziers Limited – Your One-Stop Hardware & Flooring Shop
Nairobi (Funzi Road): +254 716 259682
Eastleigh Branch: +254 722 522452 | +254 723 354299
Malindi Branch: Imadi Shopping Mall | +254 722 671352
Email: [email protected]
Delivery: Same-day in Nairobi; next-day to Mombasa, Kisumu, Eldoret, Nakuru and beyond, subject to product availability and logistics.
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