Kilmat vs Siless: Best Sound Deadening Material Comparison

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Written by: Mohammad Sameer

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You are right. Don’t we all just crave that quiet corner, a peaceful escape from the constant noise? It can feel impossible sometimes!

Introducing the revolutionary quiet achieved with Kilmate and Silless noise suppression products. Through cutting-edge technology, these solutions offer customized approaches to silence the specific noisemakers plaguing your home.

Stop the battle against noise! Our research has deciphered the complexities of Kilmate and Silless, revealing their unique strengths.

Let us help you discover the perfect solution to transform your home into the peaceful oasis you crave.

See the below and learn how the market achieves its goal:

market share of each sound deadening

The Differences Between Kilmat vs Siless?

image of The Differences Between Kilmat vs Siless?

I am your car repair specialist! You know that feeling when you crank up the tunes, but your car sounds more like a tin can on a gravel road? That is road noise for you, and it can kill a good driver.

Today, we’re diving into the world of sound deadening to see how Kilmat and Siless stack up against each other.

1. Material Composition

Both Kilmat and Siless are butyl-based mats, the workhorses of sound deadening. Kilmat comes standard at 80 mils (2 millimetres) thickness, a good balance between weight and noise reduction.

Siless offers the same thickness, focusing purely on butyl for similar soundproofing. They also have a 50 mil (1.3 millimetres) option for a lighter touch.

2. Installation Process

Here’s where things get greasy… well, not really. Installing both Kilmat and Siless is pretty straightforward.

You clean the metal surface in your car, then roll the mat on for a secure fit. Just remember, temperature matters – the metal needs to be just right for the butyl to stick properly.

Both come in handy sizes for easy cutting and manoeuvring. Just be mindful of the weather – some adhesives are picky about temperature!

3. Effectiveness In Reducing Noise Reduction

Siless boasts impressive results in independent tests, even outperforming some competitors in reducing that annoying resonance. But hold on a second! It’s not always a clear winner.

Other brands, like ResoNix, might be even more effective. The key is to target your car’s specific noise issues and desired level of quiet.

4. Price

Siless often gets mentioned as a budget-friendly option. It’s a cost-effective way to quieten your car down. But remember, you get what you pay for.

Consider the coverage area and noise reduction you need before making a decision. Prices can also fluctuate, so keep that in mind while comparing these two.

5. Durability

We all want our car fixes to last. With sound deadening, durability hinges on the adhesive’s ability to handle temperature changes and the material’s resistance to moisture.

Both Kilmat and Siless aim for long-lasting performance, but real-world use and user reviews can tell the full story.

6. Aesthetics

Let’s face it, sometimes you gotta look good under the hood (or, well, the interior panels). Both Kilmat and Siless offer versatile options that blend in nicely.

But if you’re concerned about exposed areas, consider the material’s colour and finish. Remember, a clean and professional-looking installation goes a long way.

The Cost-Effective Champion: Siless

Leaving Siless, then David and Goliath in the sound deadening. Siless has an excellent sound reduction capability as it offers an affordable, cost-efficient approach to noise reduction.

It is unsung heroes in the budget-conscious, ensuring that tranquility is not simply an option.

The unique characteristics of silessly’ foam cover is soft but sturdy barrier which absorbs sound waves whole-heartedly.

There’s a sound that is consuming the air. Imagine the space inside the cocoon that keeps you from chaos. Silent makes it real and makes it the perfect companion to any car, home, or anywhere in which peace is valued.

How does the noise reduction capability of Kilmat compare to that of Siless?

Kilmat is known for its high noise reduction capability in demanding environments because the butyl is very thin.

Siless is effective but is a better choice for moderate noise reduction, which makes Kilmat a better choice for industrial use or high-performance cars.

Which One Is Better For Soundproofing?

image of Which One Is Better For Soundproofing?

1. For Cars

When it comes to soundproofing our cars, we have several options, each with its benefits for specific applications. This list includes three materials commonly used for car soundproofing: mass-loaded vinyl (MLV), Dynamat, and closed-cell foam.

Mass Loaded Vinyl (MLV)

Many car enthusiasts and experts consider mass-loaded vinyl as the most effective sound-deadening material for cars due to its density.

It is often regarded as the “gold standard” of car soundproofing. Mass Loaded Vinyl (MLV) is available in both roll and sheet formats. Some variations include an adhesive backing for simplified installation on various interior components, including doors, trunks, and floors.

The primary function of MLV is to impede noise transmission. This is achieved through a mechanism that disrupts sound waves.

What Chris Van Loan Says,

Luxury Liner Pro (LLP) quieted my road trips! It’s heavy and a pain to install, but worth it. My old Tacoma with loud tires was making my ears ring. Dynamat helped some, but road noise still reached the 80s and 90s on the highway. After LLP, it’s mostly in the high 70s to low 80s – a big difference! My hearing isn’t muffled anymore on long drives. I only lined the back wall and floor (4 sheets), which added about 120lbs (not ideal). Doing the doors next to see how much quieter I can get it. It was pricey, but it works way better than anything else I tried.


One type of sound-deadening material, commonly known by the brand name Dynamat, consists of bitumen and resin with aluminium foil cladding.

While not as dense as MLV, it is still very effective for soundproofing cars.

Dynamat is designed to bond with clean, dry interior surfaces such as metal or plastic. This adhesion is achieved through its pressure-sensitive adhesive layer. It works by dampening vibration, which helps reduce noise.

Dynamat is more affordable than MLV and is easier for us to install, making it a great option for larger flat spaces like doors, trunks, and floor panels.

What Dynamat user Says;

I took my car to war with all that road noise, and guess what? I won! Dynamat, this stuff Scott Whitaker created, is a game changer. Their Dynamat Xtreme is like a superhero – it’s got this special butyl formula and a tough aluminium layer that knocks out noise, heat, and those annoying vibrations. And Dynamat doesn’t stop there – their newer ProX blows away the competition according to tests. If you want a quieter ride, Dynamat’s your best friend.

Closed Cell Foam

The closed-cell foam acts as a vibration damper and sound barrier for cars. It comes in various thicknesses and has an airtight closed cell structure, which helps stop sound from penetrating.

This material is suitable for applications requiring the filling of voids, cracks, gaps, and complex shapes where sheet materials are not applicable.

Closed cell foam is budget-friendly compared to MLV and Dynamat, making it a practical choice for car soundproofing.

Reasons to Consider Soundproofing Our Cars:

  1. Reduce Noise from Outside: Soundproofing significantly cuts down on road noise and noise from other vehicles, making our rides more relaxing.
  2. Improve Audio Quality: Soundproofing absorption treats surfaces to cut down on echoes and resonance for clearer audio.
  3. Increase Privacy: Adding soundproofing materials to doors, trunks, floors, and other panels can improve noise reduction within the vehicle. This can be beneficial for a quieter ride and increased in-cabin privacy.

2. For Homes

When it comes to soundproofing our homes, we have various materials and methods at our disposal to reduce unwanted noise and create a more peaceful living environment.

Some common materials used for soundproofing homes include acoustic panels, fiberglass insulation, soundproof curtains, and weatherstripping.

Acoustic Panels

Acoustic panels are designed to absorb sound and reduce noise within a room. They are typically made of dense, sound-absorbing materials and can be mounted on walls or ceilings to improve the acoustics of a space.

Fiberglass Insulation

Fiberglass insulation is commonly used in walls, floors, and ceilings to reduce noise transmission between rooms. It works by absorbing sound vibrations and preventing them from travelling through the structure of the home.

Soundproof Curtains

Soundproof curtains are made of heavy, dense materials that help block outside noise from entering a room. They are a practical and cost-effective solution for soundproofing windows and doors.


Weatherstripping is used to seal gaps around windows and doors, preventing noise from entering the home. It also helps improve energy efficiency by reducing drafts and air leaks.

How To Install Kilmat And Siless?: A Step-by-Step Guide

Here is the video

This guide details the process of installing Kilmat and Siless sound-deadening materials for effective car soundproofing. Here’s a breakdown of the steps involved:


  1. Gather tools and materials:
    • Kilmat/Siless sheets
    • Measuring tape
    • Marker
    • Scissors/utility knife
    • Roller tool
  2. Clean the surface: Ensure the application area is free of dust, grease, and debris.

Measurement and Cutting

  1. Measure the application area: Use a measuring tape for accurate dimensions.
  2. Mark the Kilmat/Siless sheets: Transfer the measurements and mark the cutting lines with a marker.
  3. Precise cutting: Use scissors or a utility knife to cut the sheets according to the markings.


  1. Peel and apply: Carefully remove the backing and apply the sound-deadening material to the designated area.
  2. Roll and press: Use a roller tool to firmly press the sheets onto the surface, eliminating air pockets and gaps.

Finishing Touches

  1. Inspect the installation: Check for uniform application with no loose edges or corners.
  2. Secure the bond: Use the roller tool again for further pressing if necessary.


  1. Smooth embossing: Ensure the embossing on the foil (if present) is smoothly rolled out, indicating proper installation.
  2. Final inspection: Verify that the sound-deadening material is securely and uniformly set across the entire surface.

Where Can You Purchase Kilmat And Siless?

Kilmat and Siless sound-deadening products are available for purchase from reputable retailers and online platforms.

You can find these products at specialized automotive stores, as well as through e-commerce websites such as Amazon.

These products can be conveniently purchased online, and they are often accompanied by customer reviews and ratings to aid in the selection process.

Is Siless a good alternative to Kilmat for residential noise reduction?

Yes, Siless can serve as a good alternative to Kilmat to provide residential housing. It offers cost efficiency and sound absorption in its foam layer which can be used daily in homes and regular cars.


Attention: Annoyed by road noise or a noisy home? Kilmat & Siless deaden car sound, creating a peaceful driving experience. For your home, explore soundproofing options like curtains & insulation for a quieter haven.

Imagine enjoying music or relaxing without distractions. Browse our soundproofing solutions and create your peaceful space! Let us know your quiet space tips in the comments.


What is better than KILMAT?

Noico Sound Deadender performance. Despite a reduced resonance of 2.25 db, it is 1.7 times as powerful as the original Kilmat 80 mm. It also slightly surpasses the Soundskins 3-in-1 in reducing resonance by half a db more, resulting in 1.15x greater performance.

Is KILMAT good insulation?

Kilmat is good within temperatures between 49 and 212F. It is non-absorbing and optimally dense and completely protected. Kilmat’s noise deadener increases car heat insulation. You will get a little colder during a warm winter.

What is the best car sound deadening material?

Our research reveals that butyl rubber is the most effective material to remove noise from cars in the automotive market, despite the lack of elastomeric characteristics. Butyl Rubber holds air in a tire.

Is HushMat a good product?

Compare HushMat’s sound reducing, heat absorbing, and vibration reducing features. Few products match this. The HushMat is rated #1 as the only OEM-approved vehicle for the automotive aftermarket.

What is the best sound deadening material?

Many materials can provide sound-proof insulation including fiberboard, mineral wool, cellulose foam panels or cellulose-filled vinyl. The most effective material is determined by varying factors, including the budget and soundproofing needed as well as the location for installation.

Does KILMAT reduce heat?

Kilmati noise deterrence can also improve car insulation. It’s cool for you during the summer and warmer in the winter. Kilmat aids in lower vibration in engines.

Does KILMAT smell?

Kilmat 50 mil has a butyl-rubber base and contains no asphalt. Generally, the substance doesn’t smell at all but can have some technical smell typical to most buty rubber products. Normally the smell disappears within 1 hour.

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About Mohammad Sameer

My name is Mohammad Sameer, the founder of SoundproofGears. My hypersensitive hearing turned me into a lifelong seeker of silence. After years of research, I've become an expert on soundproofing techniques and materials. In November 2022 I launched this site to share my knowledge and help others find acoustic sanctuary. About More