KILMAT Extra 100 mil 25 sqft Car Sound Deadening Mat - DIY Noise

In this review the KILMAT Extra 100 mil sound deadening mat is evaluated for drivers and DIY installers who want a measurable reduction in road and panel vibration noise. The bottom line: this is a thick, very sticky butyl and foil mat that delivers noticeably quieter interiors and improved in-car audio clarity when applied to doors, floors and trunks. Installation is straightforward for a competent DIYer, and the embossed foil gives a clear visual cue when a sheet has been fully rolled and set.

Key Features

• 100 mil thickness: At 2.5 mm the extra thickness provides increased vibration damping compared with thinner sheets, improving low frequency noise control.
• Self-adhesive butyl: The aggressive adhesive backing ensures the mat stays put on common automotive panels, reducing the need for mechanical fasteners.
• Foil facing with embossing: The foil has an embossed pattern that flattens when fully installed, giving a simple visual indicator of correct application.
• Convenient sheet size: Sheets sized about 9.8 by 15.7 in are easier to handle and cut for door skins, floor pans and trunk panels than large rolls.
• 25 sq ft coverage: The 24-sheet pack covers roughly 25 square feet, enough for targeted damping of several panels or a single compact car's critical areas.

Who It's For

The KILMAT Extra mat is best for car owners, audio enthusiasts and hobby mechanics who want a DIY solution to reduce road noise, panel resonance and improve stereo clarity without specialized tools. Because the material is fairly light yet dense, it works well for doors, floors, trunks and partial under-hood or roof applications where added mass is acceptable.

It is less appropriate for shoppers who need a professional installation service, or those who require a full-vehicle turnkey sound package that includes thermal barriers or thick damping applied under carpets by a shop. Also, buyers wanting a true roll product for very large uninterrupted coverage may prefer other formats.

Pros & Cons

Pros

• High tack adhesive for secure long-term adhesion on metal panels.
• 100 mil thickness yields clear reduction in vibration and improves music clarity.
• Sheets are easy to cut and handle for precise placement around brackets and contours.
• Embossed foil provides an easy go/no-go installation indicator when rolled smooth.

Cons

• 24 smaller sheets can increase trimming time versus larger roll formats.
• DIY installation requires time and basic tools to achieve full coverage and best results.

Specifications

Our Verdict

The KILMAT Extra 100 mil mat is a cost-effective, user-friendly choice for anyone wanting significant vibration damping and improved cabin sound without professional installation. Its thicker 2.5 mm profile and strong adhesive deliver real noise reduction and better audio clarity when applied to doors, floors and trunks, making it good value for DIY projects that target troublesome panels.

Frequently Asked Questions

Is this material easy to cut for door and floor panels?
Yes. Customers report it cuts cleanly with utility knives and scissors, making fitting around brackets straightforward.

How do I know when a sheet is installed correctly?
The foil embossing is designed to flatten; when the embossed pattern is rolled out smooth the sheet is properly adhered.

Will this mat add a lot of weight to the car?
The product is described as light weighted for its thickness, with a coverage weight of about 0.68 lb per sq ft, so targeted application gives damping without excessive added mass.