When choosing a new shower enclosure, shower door or wetroom screen, you'll often see the glass described as 6mm, 8mm or 10mm thick.
But does thicker shower glass actually make a difference?
For most shower enclosures and doors, 6mm or 8mm toughened safety glass provides an excellent balance between strength, weight and practicality. 10mm glass is heavier and more rigid, making it particularly well suited to large, minimalist wetroom screens.
That doesn't mean 10mm is automatically better.
The right shower glass thickness depends on the type of enclosure, how the glass is supported, whether the panel moves, its overall size and the look and feel you want from your bathroom.
In this guide, we'll compare 6mm, 8mm, and 10mm shower glass, explain the advantages of each, and help you decide which thickness is right for your shower.
What Thickness Should Shower Glass Be?
The three key shower glass thicknesses you'll encounter are:
| Glass Thickness | Commonly Used For | Main Advantage |
|---|---|---|
| 6mm | Shower enclosures and moving shower doors | Strong while remaining relatively lightweight |
| 8mm | Premium enclosures, doors and wetroom screens | Greater rigidity and a more substantial feel |
| 10mm | Large and minimalist wetroom screens | Maximum rigidity and a premium feel |
There are shower products that use other glass thicknesses, but 6mm, 8mm and 10mm are the main options worth understanding when comparing modern shower glass.
The most important thing to remember is that glass thickness is only one part of the complete product design.
A well-engineered 6mm shower enclosure isn't automatically inferior to an 8mm enclosure, just as choosing 10mm glass doesn't automatically make a wetroom screen better.
Is Thicker Shower Glass Better?
Thicker shower glass is more rigid and generally feels more substantial, but it isn't automatically better for every shower.
As glass becomes thicker, it also becomes heavier.
That additional weight needs to be supported by a suitable:
- Hinges
- Rollers
- Wall profiles
- Brackets
- Stabilising bars
- Fixings
This is why different shower configurations favour different glass thicknesses.
A sliding or bifold shower door contains moving components, so keeping the glass strong but manageable can be beneficial. A large fixed wetroom screen doesn't need to slide or fold, making thicker glass particularly suitable.
Before worrying about glass thickness, establish which shower configuration works for your bathroom. Our Which Shower Enclosure Do I Need? guide compares the main enclosure and door styles in more detail.
Is 6mm Shower Glass Good?
Yes. 6mm toughened safety glass is a popular and practical choice for shower enclosures and shower doors.
Its main advantage is the balance between strength and weight.
The glass is substantial enough for many modern enclosure designs while remaining lighter than an equivalent 8mm or 10mm panel.
You'll commonly encounter 6mm glass across:
- Quadrant shower enclosures
- Offset quadrant enclosures
- Sliding shower doors
- Bifold shower doors
- Pivot shower doors
- Corner-entry enclosures
The exact specification depends on the individual product.
Advantages of 6mm Shower Glass
Relatively lightweight: less weight needs to be moved and supported by the enclosure hardware.
Excellent for moving doors: particularly useful for sliding, folding and pivoting mechanisms.
Wide product choice: 6mm glass is used across a broad range of shower enclosure styles.
Practical everyday option: it provides a strong balance between performance and ease of use.
Are There Any Downsides to 6mm Glass?
Compared with thicker glass, a large 6mm panel can feel less substantial.
It may also rely more heavily on the enclosure's framing and supporting structure than a thicker, minimalist panel would.
That doesn't make it poor quality.
If an enclosure has been designed around 6mm toughened glass, its hinges, rollers, profiles, and supports should all be engineered to meet that specification.
Is 8mm Shower Glass Good?
8mm toughened safety glass is an excellent choice if you want greater rigidity and a more substantial feel without moving up to heavier 10mm glass.
It sits neatly between the two.
Compared with 6mm glass, an 8mm panel is thicker and heavier, giving a shower door or screen a more substantial feel.
This makes 8mm particularly popular for:
- Premium shower enclosures
- Sliding shower doors
- Hinged and pivot doors
- Larger glass panels
- Semi-frameless designs
- Wetroom screens
For a real-world example, the Roman Haven8 Sliding Shower Door in Silver combines 8mm toughened safety glass with a sliding mechanism, quick-release double metal rollers and a reversible design.
Advantages of 8mm Shower Glass
Greater rigidity: the additional thickness creates a more substantial panel.
Premium feel: the extra weight can make doors feel particularly solid when operated.
Versatility: 8mm glass works across shower doors, enclosures and wetroom panels.
Suitable for minimalist designs: greater rigidity can work particularly well with less visually dominant framing.
Are There Any Downsides to 8mm Glass?
The main difference is weight.
An 8mm panel weighs more than an equivalent 6mm panel, so the complete enclosure requires hardware designed to support the additional weight.
That's not normally something you need to calculate when buying a complete shower enclosure. The manufacturer should already have designed the hinges, rollers and profiles around the specified glass.
It does mean that different glass thicknesses shouldn't be treated as interchangeable.
Is 10mm Shower Glass Better Than 8mm?
10mm glass is thicker, heavier and more rigid than 8mm glass, but that doesn't automatically make it the better option.
The key question is what the glass needs to do.
10mm glass is particularly well-suited to large fixed wetroom screens.
A fixed screen doesn't need to be repeatedly opened, closed, folded or moved along a runner. That makes the additional weight less of an operational disadvantage, while the increased rigidity complements a large minimalist glass panel.
A good example is the Roman Haven Select 10mm Brushed Brass Wetroom Panel, which uses 10mm toughened safety glass in a frameless design.
Advantages of 10mm Shower Glass
High rigidity: particularly useful for larger fixed panels.
Substantial feel: 10mm glass feels noticeably solid.
Premium appearance: well-suited to minimalist wetroom designs.
Ideal for fixed screens: additional weight is less of a problem when the panel isn't functioning as a moving door.
Are There Any Downsides to 10mm Glass?
The biggest consideration is weight.
A large 10mm toughened-glass panel can be extremely heavy.
That makes suitable wall fixings, stabilisation and correct handling during installation particularly important.
For a conventional framed shower enclosure or moving door, 10mm may simply be unnecessary where a properly engineered 6mm or 8mm system already provides everything required.
6mm vs 8mm vs 10mm Shower Glass
So which thickness should you choose?
Choose 6mm Glass If...
You want a practical shower enclosure or door where keeping moving sections relatively lightweight is advantageous.
6mm is particularly suited to many sliding, bifold, quadrant and pivot designs because it combines toughened-glass strength with manageable weight.
Choose 8mm Glass If...
You want greater rigidity and a more substantial feel.
8mm is arguably the most versatile premium option because it can be used across conventional shower enclosures, moving shower doors and fixed wetroom panels.
Choose 10mm Glass If...
You're creating a premium wetroom or walk-in shower and want a large fixed glass panel with a particularly solid, substantial feel.
The additional rigidity makes 10mm particularly attractive for minimalist wetroom designs.
Is 6mm or 8mm Better for a Shower Enclosure?
For a conventional shower enclosure, both 6mm and 8mm can be excellent choices.
The better option depends on the complete enclosure.
A well-engineered 6mm quadrant enclosure with good-quality rollers and profiles can be a better choice for your bathroom than an 8mm enclosure that's the wrong size or configuration.
Similarly, an 8mm enclosure may appeal if you want a heavier, more substantial feel.
The current Asturias Bathrooms shower enclosures range includes both 6mm and 8mm glass options across different configurations.
Don't choose the glass thickness before choosing the enclosure type.
Start with your bathroom layout and available space, decide how you want the door to open and then compare the glass specifications of suitable products.
Is 6mm or 8mm Better for a Shower Door?
Again, it depends on the design.
A shower door is a moving piece of glass, so additional thickness also means additional moving weight.
For bifold and sliding shower doors, keeping that weight manageable can be useful.
For premium sliding, hinged, or pivoting designs, 8mm glass can provide a more substantial feel when the hinges or rollers are engineered to support it.
The Asturias Bathrooms shower doors collection includes different glass specifications across sliding, bifold, pivot and hinged designs.
The key consideration isn't simply "6mm or 8mm?"
It's about whether the complete door — glass, rollers, hinges, profiles, and seals — has been well designed.
Is 8mm or 10mm Better for a Wetroom Screen?
This is where glass thickness becomes particularly noticeable.
Both 8mm and 10mm toughened safety glass can work extremely well for fixed wetroom screens.
An 8mm screen provides excellent rigidity while weighing less than an equivalent 10mm panel.
For example, the Ajax Reni 8mm Wetroom Panel with Clear Glass and Brushed Bronze Profile uses 8mm toughened safety glass, includes a support arm and is available in widths from 500mm to 1400mm.
A 10mm panel offers an even more substantial feel and may appeal particularly in large, minimalist installations.
So which should you choose?
Choose 8mm if you want an excellent balance between rigidity, weight and premium appearance.
Choose 10mm if you particularly value the substantial feel of thicker glass and your chosen wetroom system is designed around it.
You can compare both specifications within the Asturias Bathrooms wetrooms range.
Does Thicker Shower Glass Feel More Premium?
Generally, yes.
One reason people choose 8mm or 10mm glass is simply the way it feels.
A thicker glass panel tends to feel heavier and more substantial, which can contribute to the overall impression of quality.
The difference may be relatively subtle visually, but it can become more apparent when opening a shower door or handling a panel.
However, glass thickness isn't the same thing as product quality.
Also consider:
- Hinges
- Rollers
- Wall profiles
- Handles
- Support bars
- Adjustment range
- Glass treatment
- Seals
- Overall engineering
A beautifully engineered 6mm enclosure can feel far more premium than a poorly designed product that simply uses thicker glass.
Is Thicker Shower Glass Safer?
You shouldn't assume that thicker automatically means safer.
What matters is that the glass is suitable safety glass for the application and that the complete shower product is designed and installed correctly.
Glass thickness primarily changes characteristics such as:
- Rigidity
- Weight
- Panel feel
- Support requirements
- Design possibilities
A correctly specified 6mm toughened shower door is designed to work safely as part of that enclosure.
Similarly, an 8mm or 10mm panel requires appropriate supports and fixings to accommodate its additional weight.
Always follow the individual manufacturer's specifications rather than assuming thicker glass can be substituted into an existing enclosure.
Why Is Shower Glass Toughened?
Shower glass needs to withstand everyday bathroom use while supporting someone standing on a wet surface.
That's why modern shower enclosures, doors and screens use safety glass designed for the application, commonly toughened safety glass.
Toughened glass undergoes a controlled heating and cooling process that changes its strength and behaviour.
If toughened glass does fail, it is designed to break differently from ordinary untreated glass.
When comparing shower products, check the individual specification for information about the type and thickness of glass used.
Does Glass Thickness Affect Shower Door Weight?
Yes.
The thicker the glass, the heavier an equivalent panel becomes.
That's one of the most important practical differences between 6mm, 8mm and 10mm glass.
The additional weight affects:
- Hinges
- Rollers
- Wall profiles
- Support bars
- Fixings
- Installation
- How a moving door feels
This also helps explain why 10mm is particularly well-suited to fixed wetroom panels, while 6mm and 8mm are widely used for moving shower doors.
Does Thicker Glass Need More Support?
Thicker glass is more rigid, but it's also heavier.
A large wetroom panel, therefore, requires suitable profiles, brackets, or stabilising bars in accordance with the manufacturer's design.
The wall construction and chosen fixings matter too.
This becomes especially important when handling large 8mm and 10mm panels, as the installation must safely support the full weight of the screen.
If you're fitting one, our How to Install a Wetroom Screen guide covers positioning, securing and installing the panel.
Does Shower Glass Thickness Affect Cleaning?
Not significantly.
A 10mm panel doesn't inherently require a different cleaning routine from a 6mm or 8mm panel.
The bigger factors are:
- Hard-water deposits
- Soap residue
- Glass coatings
- Frequency of cleaning
- Whether you use a shower squeegee
- Amount of framing and hardware around the glass
A large frameless wetroom panel may sometimes feel easier to clean because there are fewer runners, profiles and moving components around it.
That's a benefit of the overall design rather than simply the thickness of the glass.
Does Shower Glass Thickness Affect Measurements?
Glass thickness isn't the primary measurement to worry about when planning a shower.
What's much more important is the complete fitting range of the enclosure, door or screen.
Shower enclosures and doors may have an adjustment range rather than fitting one exact wall-to-wall dimension.
Bathroom walls aren't always perfectly straight, either, which is why taking several measurements before ordering can be important.
For the complete process, follow our How to Measure a Shower Enclosure guide before selecting your final size.
Shower Glass Thickness FAQs
What is the best thickness for shower glass?
There isn't one best thickness for every shower.
6mm is an excellent practical choice for many shower enclosures and moving doors.
8mm provides greater rigidity and a more substantial feel while remaining versatile enough for enclosures, doors and wetroom screens.
10mm is particularly well suited to large fixed wetroom panels where rigidity and a premium feel are priorities.
Is 6mm glass thick enough for a shower enclosure?
Yes.
6mm toughened safety glass is widely used for modern shower enclosures and doors.
The important thing is that the complete enclosure has been designed around that glass thickness.
Is 8mm glass worth it for a shower?
It can be.
8mm glass provides greater rigidity and a more substantial feel than 6mm, which can make it attractive for premium shower enclosures and doors.
However, don't choose the wrong enclosure simply because it has thicker glass.
Is 10mm shower glass worth it?
10mm glass can be particularly appealing for a premium wetroom where a large fixed panel benefits from additional rigidity and a substantial appearance.
For a conventional framed enclosure or moving shower door, a well-engineered 6mm or 8mm system may be more appropriate.
Is 10mm glass stronger than 8mm?
An equivalent 10mm panel is thicker and more rigid than an 8mm panel.
However, shower safety and performance depend on more than thickness. The type of safety glass, panel dimensions, supports, hardware and installation all matter.
Is 8mm glass better than 6mm?
Not necessarily.
8mm is thicker and more rigid, but 6mm's lower weight can be beneficial for moving shower-door systems.
The better option depends on the design of the complete enclosure.
Why are wetroom screens often thicker than shower doors?
Wetroom screens commonly use large fixed panels with relatively minimal framing.
Additional glass thickness provides greater rigidity, making 8mm and 10mm particularly suitable.
A shower door needs to move using hinges, rollers or folding mechanisms, so weight becomes a more significant consideration.
Can I Replace 6mm Shower Glass With 8mm Glass?
You shouldn't assume so.
An enclosure's profiles, hinges, seals, rollers and other components are designed for a particular glass specification.
Using thicker glass could mean the panel no longer fits properly and could also place additional weight on components that weren't designed to support it.
Use replacement glass that meets the original manufacturer's specifications.
Does Thicker Shower Glass Reduce Leaks?
Not by itself.
Water containment depends much more on the enclosure design, seals, profiles, door alignment and quality of installation.
A badly adjusted 10mm shower door could leak, while a correctly installed 6mm enclosure remains watertight.
What Glass Thickness Is Best for a Walk-In Shower?
For a large fixed walk-in or wetroom screen, 8mm and 10mm are both excellent options.
8mm offers a strong balance between rigidity and weight, while 10mm provides an especially substantial feel.
Choose based on the complete wetroom system rather than glass thickness alone.
6mm, 8mm or 10mm Shower Glass: Which Should You Choose?
The simplest answer is:
6mm: an excellent practical choice for shower enclosures and moving doors where keeping weight manageable is advantageous.
8mm: ideal when you want additional rigidity and a more substantial feel, with plenty of choice across enclosures, doors and wetroom screens.
10mm: particularly well suited to premium fixed wetroom screens where maximum rigidity and a substantial minimalist appearance are priorities.
Most importantly, don't judge the quality of a shower enclosure by glass thickness alone.
Glass, hinges, rollers, profiles, seals and supports work as a complete system. A well-engineered 6mm enclosure can be a better product than a poorly designed enclosure using thicker glass.
Choose the right shower configuration for your bathroom first, check your measurements carefully and then compare the glass thickness and specifications of products that meet those requirements.
