4 PCS Keyboard Spacebar Foam
5.0Editor score
Two thicknesses included
Adhesive backing for install
Durable EVA material
In this guide
Mechanical keyboards offer a satisfying typing experience but often suffer from hollow sounds and echo. Keyboard foam helps eliminate these issues by dampening noise within the keyboard case for a quieter setup.
We compared ten real products based on material quality, thickness, compatibility, and user feedback. This list covers options for various layouts including spacebar silencers and full bottom foam kits.
Each pick highlights key features like Poron material or EVA construction along with installation ease. Please note that availability and prices can change over time on retailer platforms.
Top 3 Picks for Best Keyboard Foam
HONKID Keyboard Foam
4.7Editor score
Poron material blocks echo
Fits 60 to 104 layout
Easy to cut to size
KBDiy NOVA60 Sound Dampening Foam Kit
Includes plate and bottom foam
IXPE switch pad included
PET sound absorbing film
Top 10 Best Keyboard Foam in 2026 Compared
Here is a side by side look at all ten products to help you see the differences in material and size at a glance.
ProductsSpecificationsEditor scorePrice
Editor's Choice
HONKID Keyboard Foam
Material: LE-20 Poron
Thickness: 3mm
Size: 50x15cm
Layout: 60 to 104
4.7Editor score
Editor's Choice
4 PCS Keyboard Spacebar Foam
Material: EVA Foam
Thickness: 2mm and 3mm
Count: 4 Pieces
Fit: 6.25u Spacebar
5.0Editor score
Best Premium
KBDiy NOVA60 Sound Dampening Foam Kit
Kit: Full Dampening Set
Bottom Foam: 2mm Inoue Poron
Plate Foam: Inoue Poron
Switch Pad: IXPE Included
Keyboard Foam for Mechanical Keyboard Bottom
Material: LE-32W Poron
Thickness: 3mm
Color: White
Tool: Pry Bar Included
5.0Editor score
DUROCK 0.5mm Poron Switch Pads
Material: Poron Cutouts
Count: 120 Pieces
Thickness: 0.5mm
Compatible: 3 and 5 Pin
4.7Editor score
YMDK Keyboard Sound Dampening Foam
Layout: 61 64 Keys
Pieces: 3 Piece Set
Material: Poron Silencer
Mount: PCB to Positioning
3.5Editor score
4 Pcs 6.25u Keyboard Spacebar Foam
Material: EVA Foam
Thickness: 1mm and 3mm
Count: 4 Pieces
Fit: 6.25u Spacebar
4.4Editor score
ZCZQC 120pcs DUROCK Keyboard Switch Pads
Material: Poron Foam
Count: 120 Pieces
Thickness: 0.5mm
Compatible: Hot Swap PCBs
4.9Editor score
Switch Sound Dampeners Sheet
Layout: 84 Keys
Thickness: 3mm
Mount: PCB to Steel Plate
Function: Eliminates Resonance
4.0Editor score
PATIKIL 5 x 17 x 0.16 Inch Keyboard Foam
Material: Cotton Sponge
Size: 5×17 Inches
Color: Black
Cut: Dividing Line
1. HONKID Keyboard Foam – Best Overall Keyboard Foam
HONKID Keyboard Foam
LE-20 Poron Material
50x15cm Sheet Size
3mm Thickness Standard
Fits 60 to 104 Layout
This product is a full sheet of high quality foam designed to sit in the bottom case of mechanical keyboards. It holds a strong rating from users who appreciate the immediate reduction in hollow sound when typing.
Pros
- High quality sound absorbing material
- Fits most standard keyboard layouts
- Easy to cut with scissors
- Effective at blocking echo noise
- Good value for a full sheet
Cons
- May require trimming for exact fit
- Color is black which may show
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The LE-20 Poron material is known for superior sound absorption compared to standard foams. It effectively blocks noise from the cavity between the PCB and the case. The sheet size allows it to fit 60 up to 104 layout keyboards with ease.
One trade-off is that the foam comes as a large sheet. You must measure and cut it to fit your specific keyboard footprint. While easy enough, this requires a bit of patience and care to avoid mistakes.
If you want a reliable way to improve sound quality without buying a full kit this is an excellent choice. It balances price and performance well for anyone looking to mod their mechanical keyboard today.
Superior Sound Dampening
The Poron material is specifically engineered to absorb sound waves and reduce resonance within the keyboard case.
Versatile Layout Compatibility
Because the sheet is large it can be trimmed to fit many common keyboard sizes from compact 60s to full sizes.
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2. 4 PCS Keyboard Spacebar Foam – Best Budget Keyboard Foam
4 PCS Keyboard Spacebar Foam
EVA Material Construction
Two Thickness Options
Adhesive Backing
4 Pieces Included
This package offers four pieces of spacebar foam designed to silence the hollow sound of a spacebar. It holds a perfect rating from buyers who found it solved their specific keyboard noise issue quickly.
Pros
- Incredibly affordable price point
- Includes both 1mm and 3mm foam
- Strong adhesive backing holds well
- Durable and compression resistant
- Perfect for fixing spacebar clack
Cons
- Only fits 6.25u spacebars
- EVA is less premium than Poron
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The value here is hard to beat since you get two thicknesses in one pack. The EVA material is resilient and keeps its shape under pressure. The adhesive backing makes installation simple without needing extra tape or glue.
The main limitation is that it is designed only for 6.25u spacebars. If your keyboard uses a different stabilizer size this will not fit. Also EVA foam does not sound as rich as Poron foam at the bottom.
If you need to fix a noisy spacebar on a budget this is the most cost effective solution. It delivers immediate results and requires very little effort to install on your keyboard.
Flexible Thickness Options
Having both 1mm and 3mm foam allows you to choose the thickness that matches your stabilizer pole height perfectly.
Easy Adhesive Install
The foam comes with a sticky backing so you can peel and stick it directly onto the PCB or plate for a secure fit.
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3. KBDiy NOVA60 Sound Dampening Foam Kit – Best Premium Keyboard Foam
KBDiy NOVA60 Sound Dampening Foam Kit
Full Dampening Kit
Includes Plate and Bottom Foam
IXPE Switch Pad
PET Sound Film
This kit is designed specifically for users building or modding 60 percent custom mechanical keyboards. It provides a complete set of foam layers to maximize sound quality and tactile feel.
Pros
- Comprehensive solution for 60% boards
- Includes multiple foam types in one kit
- High quality Inoue Poron foam
- IXPE switch pad for bottom out
- PET film helps with acoustics
Cons
- Only fits 60% layouts specifically
- Higher price than single foam sheets
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The inclusion of Inoue Poron foam for both the plate and bottom case is a premium feature. It also includes an IXPE switch pad to cushion the switch bottom out and a PET film for extra sound absorption.
The trade-off is that it is highly specific to 60 percent boards. If you have a larger keyboard this kit will not work. The price is also higher than buying a generic sheet of foam.
If you have a 60 percent custom board and want the best acoustic upgrade this kit is unmatched. It ensures every layer of your keyboard is properly dampened for a solid sound.
Complete Acoustic Mod
This kit covers the bottom case plate gap and switch bottom out so you do not need to buy separate pieces.
Premium Inoue Poron
Inoue Poron is a high grade material known for its ability to absorb sound without losing thickness over time.
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4. Keyboard Foam for Mechanical Keyboard Bottom – Solid Poron Option
Keyboard Foam for Mechanical Keyboard Bottom
LE-32W Poron Material
3mm Thick White Foam
Pry Bar Included
Multiple Layout Support
This foam is another strong contender in the Poron category which is known for high quality sound dampening. It offers a white color option and comes with a tool to help take apart your keyboard.
Pros
- High quality Poron material
- Includes a helpful pry bar tool
- Soft and elastic for better sound
- Fits many common layouts
- White color shows less dust
Cons
- Requires cutting to fit your board
- Slightly larger footprint than some
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The LE-32W Poron is slightly softer than EVA foam which leads to a clearer typing sound. The thickness of three millimeters fills the gap between the PCB and bottom case effectively to reduce vibration.
You will need to cut this foam to size which can be a minor hassle. However the included pry bar makes the disassembly process easier for beginners who want to mod their keyboard safely.
If you prefer a softer foam that sounds more natural this is a great pick. It is well suited for anyone who wants to improve sound quality without buying a full custom kit.
Includes Assembly Tool
The package comes with a plastic pry bar which helps you safely remove the top case without scratching the keyboard.
Poron Over EVA
Poron foam is generally softer and more consistent which helps the keyboard sound more uniform across the entire board.
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5. DUROCK 0.5mm Poron Switch Pads – Best Switch Dampening
DUROCK 0.5mm Poron Switch Pads
120 Piece Pack
0.5mm Poron Foam
Pre-Cut for Switches
Compatible with Hot Swap
These pads are designed to sit directly under the switches on your PCB to reduce the sound of a key press bottom out. They are pre-cut so you get one for every switch in the layout.
Pros
- Pre-cut for every switch on PCB
- Dampens bottom out sound
- Works with hot swap boards
- Clear RGB light shine through
- Easy to apply peel and stick
Cons
- Only dampens switch bottom out
- Does not cover bottom case
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The thin half millimeter profile ensures they do not interfere with the stabilizer or key cap movement. They also allow RGB light to pass through which is great for keyboards with bright backlighting.
While effective for switch noise they do not address the hollow sound from the case. You will likely want to pair them with a bottom case foam for the best overall acoustic result.
If you want to stop the ping of the switches hitting the PCB these are the most convenient option. They are a simple upgrade that many hobbyists add to their builds.
Pre-Cut Convenience
Since each pad is already cut you do not need to spend time measuring or using a blade to fit them around the switch pins.
RGB Friendly Design
The foam is translucent so it does not block the LED lights from shining through the switch housing to the key cap.
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6. YMDK Keyboard Sound Dampening Foam – Good 60% Kit
YMDK Keyboard Sound Dampening Foam
3 Piece Set
Poron Material
61 to 64 Layout
No Adhesive Required
This set offers a three piece foam solution that targets the PCB plate and switch area for sound dampening. It is designed to reduce vibration and increase sound thickness during typing.
Pros
- Full 3-piece foam solution
- Fits 61 and 64 layouts
- No adhesive needed for install
- Reduces resonance and vibration
- Does not block LED lights
Cons
- Lower user rating than others
- May require trimming for fit
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The lack of adhesive is a plus because it means you can remove the foam later if needed. The Poron material is effective at isolating sound so it does not travel to the desk.
The rating is lower than some competitors which suggests fit may be inconsistent. Since it is meant for 61 to 64 keys you might need to cut it if your board is slightly different.
If you have a 60 percent board and want a cheap kit to try this is a decent option. It provides multiple foam layers for a fuller sound at a reasonable price.
No Adhesive Needed
The foam fits between the PCB and the positioning plate tightly enough to stay in place without sticky glue.
Sound Isolation
By isolating the switch sound this foam helps prevent the noise from bouncing around inside the keyboard case.
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7. 4 Pcs 6.25u Keyboard Spacebar Foam – Alternative Spacebar Silencer
4 Pcs 6.25u Keyboard Spacebar Foam
EVA Foam Material
1mm and 3mm Included
4 Pieces per Pack
Waterproof and Durable
This is another spacebar silencer pack that provides four pads in two different thicknesses. It helps to silence the cavity sound that often comes from the stabilizer rod on the spacebar.
Pros
- Two thickness options included
- Waterproof and resilient foam
- Strong adhesive backing
- Reduces spacebar clack
- Safe and odorless material
Cons
- Only for 6.25u spacebars
- EVA less premium than Poron
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The EVA material is waterproof and compression resistant which means it will hold up well over time. The adhesive backing is strong enough to keep the pad in place even during heavy typing.
The main difference from other options is the thickness range which lets you tune the feel of your spacebar. It is a good choice if you want a bit more bulk to reduce the rattle.
If you have a noisy spacebar and want an easy fix this works well. Just make sure you have a 6.25u stabilizer before ordering.
Durable Construction
The foam is designed to be waterproof and heat resistant so it will not break down in typical use environments.
Tunable Thickness
Having both 1mm and 3mm allows you to choose the right height for your stabilizer pole to reduce play.
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8. ZCZQC 120pcs DUROCK Keyboard Switch Pads – High Rated Switch Foam
ZCZQC 120pcs DUROCK Keyboard Switch Pads
120 Switch Pads
0.5mm Poron Foam
Pre-Cut with Adhesive
Compatible with Hot Swap
This pack is highly rated by users who want to improve the sound of their mechanical switches. It includes a full pack of pads for a standard full size keyboard with 120 switch sites.
Pros
- Very high user rating
- Pre-cut for easy application
- Poron material for quality
- Compatible with hot swap PCBs
- Includes full pack for 120 switches
Cons
- Only dampens switch bottom out
- Black color blocks light
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The Poron foam is excellent for cushioning the impact of the switch hitting the PCB. This helps to make the sound more solid and less hollow when you type on your keyboard.
The black color means it will block any RGB light that shines through the switch. If you have a keyboard with per switch lighting this might not be the best choice for you.
If sound is more important than lighting this is an excellent upgrade. It is simple to install and makes a noticeable difference to the thock of your keyboard.
High User Satisfaction
The nearly perfect rating shows that most buyers are happy with how well these pads reduce switch noise.
Complete Keyboard Coverage
With 120 pads you will have enough to cover every switch on a full size board without needing extra packs.
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9. Switch Sound Dampeners Sheet – Best for 84% Layout
Switch Sound Dampeners Sheet
84 Keyboard Layout
3mm Thickness
Fills Entire PCB
No Adhesive Needed
This foam sheet is designed for keyboards with an 84 percent layout which often have a specific internal spacing. It sits between the steel plate and PCB to reduce vibration and sound resonance.
Pros
- Designed for 84 percent layout
- Eliminates hollow resonance
- Does not block light position
- Fits between steel plate and PCB
- Increases sound thickness
Cons
- Fit varies by model
- Must check layout before buying
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The foam has dimples to match the switches and does not require adhesive to stay in place. This makes it easy to remove if you want to switch things up later.
One risk is that the fit is not guaranteed for every model of 84 percent keyboard. The manufacturer notes that there can be slight errors in hole placement so you should measure carefully.
If you have an 84 percent board this is a targeted solution. It helps to eliminate the echo that is common in keyboards that have a plastic case.
No Adhesive Install
The foam is held in place by the pressure of the steel plate so you do not need to use glue to stick it down.
Sound Thickness
By filling the gap between the PCB and plate it adds mass which makes the sound thicker and more pleasant.
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10. PATIKIL 5 x 17 x 0.16 Inch Keyboard Foam – Modular Sponge Option
PATIKIL 5 x 17 x 0.16 Inch Keyboard Foam
Cotton Sponge Material
17 Inch Length
Dividing Line Design
Black Modular Foam
This foam is made from a cotton sponge material which is different from the standard Poron found in other options. It comes as a large modular sheet that you can cut to fit the gaps in your keyboard.
Pros
- Modular design for easy cutting
- Long 17 inch size
- Fills switch gaps effectively
- Good for hot swap boards
- Fine pore structure
Cons
- Material is cotton not Poron
- No adhesive backing
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The dividing lines make it easier to cut straight edges for the internal layout. This is helpful if you want to fill the space between the switches and the PCB to stop rattle.
The lack of adhesive and the cotton material means it might not hold as well as stick on pads. You might need to secure it with tape or glue depending on how your case is built.
If you want a DIY approach to dampening this offers flexibility. It is a budget friendly way to test how much foam you need in your keyboard.
Modular Cutting
The foam has dividing lines printed on it to help you cut clean sections for different parts of your keyboard.
Sound Isolation
The fine pore structure of the cotton sponge is designed to absorb sound waves and reduce vibration within the case.
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Buying Guide – How to Choose the Best Keyboard Foam
Choosing the right foam depends on your layout material preference and budget. Use these factors to find the best match for your build.
Foam Material Type
Most high end foams use Poron which is softer and has a homogeneous cell structure. This helps absorb sound without compressing too much. EVA foam is cheaper and resilient but might sound different.
Look for Poron if you want a premium sound.
Keyboard Layout Size
Foam comes in sheets or kits designed for specific layouts like 60 percent or 104 keys. Check the dimensions of the foam against your keyboard case size to ensure it fits.
Choose a sheet or kit that matches your layout.
Thickness Options
Thickness usually ranges from 0.5mm to 3mm. Thicker foam fills larger gaps and reduces vibration better. Thin foam is used under switches to prevent bottom out noise.
Select thickness based on the gap you need to fill.
Adhesive vs Non Adhesive
Some foams come with a sticky backing for easy installation. Others rely on friction between the PCB and plate. Adhesive is easier to apply but harder to remove.
Decide if you want permanent or removable foam.
RGB and Lighting
If your keyboard has RGB lighting ensure the foam does not block the LEDs. Translucent foam allows light to shine through while black foam might stop it.
Check if your foam is transparent if you want light.
Installation Difficulty
Some kits come with tools like pry bars to help you open your case. Others require you to cut the foam yourself with scissors. Consider your comfort with DIY mods.
Pick a kit that matches your skill level.
Price and Value
Simple spacebar foams are very affordable while full kits cost more. A sheet of foam is a great value if you have multiple keyboards to mod.
Budget for the right amount of foam.
Durability and Longevity
Foam that resists compression will last longer. Look for materials that are resistant to deformation and dust. This keeps your keyboard sounding good over time.
Choose durable materials for long term use.
How to Use and Care for Your Keyboard Foam
To install foam carefully disassemble your keyboard case using a screwdriver or pry bar. Remove the PCB and stabilizers to access the bottom case.
Cut the foam to size using scissors to match the internal dimensions of your case. Avoid cutting too close to the edges to allow for a snug fit.
Press the foam firmly into place to ensure it stays secure. Reassemble the keyboard and test the typing feel.
Frequently Asked Questions
What is keyboard foam used for?
Keyboard foam is used to reduce noise and vibration inside a mechanical keyboard. It fills empty space to prevent hollow sounds and makes typing more pleasant.
Does foam affect typing feel?
Foam can affect how the keyboard feels by absorbing vibration. It usually does not change key travel significantly but can make the bottom out feel softer.
Can I reuse foam after removing it?
Non adhesive foam can often be reused. Foam with strong adhesive may stick or tear so it is better to use new foam if you take it out.
How do I know if foam fits my keyboard?
Check the dimensions of the foam against your keyboard case layout. If the sheet is larger you can trim it to size with scissors.
Is Poron better than EVA foam?
Poron is generally softer and better at absorbing sound. EVA is more durable and cheaper but might not sound as good.
Do I need foam for all keyboards?
Not all keyboards need foam. High end boards often come with foam built in. If your keyboard sounds hollow adding foam helps.
Can I put foam over switches?
You should not put foam over the top of the switches. Foam goes between the PCB and the plate or case to avoid blocking the key caps.
How much foam do I need for a full board?
A full board usually requires a sheet about 50 cm wide or a kit designed for that layout. Check the product details before buying.
Final Thoughts on Choosing the Best Keyboard Foam
The HONKID Keyboard Foam stands out as a top choice for its versatile sheet size and quality Poron material.
Consider your layout and budget when selecting the right option for your build.
Prices may vary so check current availability before you order.