Siless 80 mil Car Sound Deadening Mat - High Performance Dampener

In this review of the Siless 80 mil car sound deadening mat the bottom line is simple: this is a practical, highperformance butyl damping sheet for drivers and installers who want solid noise reduction without paying premium brand prices. The reviewer found the 2mm thickness and dense Bmastic formulation make a noticeable difference in cabin noise and vibration, and the peelandplace sheets install quickly on clean metal surfaces. For anyone tackling floors, doors or trunks and who values ease of installation and measurable sound control, this product earns strong consideration.

Key Features

• 80 mil thickness: The 2mm material supplies substantial mass and damping to reduce panel vibration and lower road and engine noise.
• Bmastic formulation: The advanced butyl composition is designed for industrial performance and aims to deliver efficient vibration dampening on automotive panels.
• 18 ft2 coverage: One box covers a moderate area with seven precut sheets, making it suitable for door sets, trunks or partial floor coverage.
• Peel-and-place installation: The selfadhesive backing allows trimming and direct placement without messy adhesives, simplifying DIY fitting.
• Value pricing: Positioned to be cost effective versus similar materials, it offers a balance of performance and affordability for enthusiasts.
• Sheet size: Individual sheets of about 23.6 x 15.94 in let you work around contours with minimal waste.

Who It's For

This product is aimed at car enthusiasts, independent installers and hobbyists who want professional style sound deadening without the higher cost of some premium brands. It works well for projects that require thicker damping - such as reducing door buzz, trunk resonance or chassis panel vibration - where a 2mm butyl layer makes a tangible difference.

Those looking to soundproof an entire vehicle with a single purchase should plan on buying multiple boxes, since one 18 ft2 kit is best for partial installs. If an installer needs adhesive rollers included or wants a spray application system, they should budget for tools not provided in the package.

Pros & Cons

Pros

• Easy to cut and apply by hand, making DIY installs straightforward.
• Good adhesion to clean metal surfaces, so sheets stay in place once rolled down.
• Noticeably reduces noise and vibration in tested doors and trunk areas, improving perceived cabin quality.
• Competitive price brings industrial style damping within reach for hobbyists.

Cons

• One box covers 18 ft2 only, so fullvehicle projects require multiple boxes and extra cost.
• Roller is not included with the package, so a hand roller may need to be purchased separately for best adhesion.

Specifications

Brand	Siless
Material	Butyl damping with Bmastic formulation
Thickness	80 mil / 2mm
Coverage area	18 ft2 (1 box)
Sheets per box	7 sheets
Sheet size	23.6 x 15.94 in (each)

Our Verdict

Siless VIBRO 80 mil is a practical choice for anyone who wants strong vibration control and noise reduction at a reasonable cost. The dense 2mm butyl and advanced Bmastic compound deliver clear improvements in cabin quietness, and the peelandplace format makes it accessible to DIY installers. Buy it for targeted dampening projects; budget for multiple boxes or a roller if you plan a fullvehicle installation.

Frequently Asked Questions

How many panels will one box cover?
One 18 ft2 box with seven sheets is best for partial installs like doors, trunk or select floor areas; full vehicles will typically require multiple boxes.

Is a roller included for installation?
The package includes installation instructions but does not include a roller, so a hand roller is recommended for best adhesion.

Will this stick to painted or primed surfaces?
It adheres well to clean metal and similar surfaces; for painted or contaminated panels clean and prep the surface first to ensure proper adhesion.