Black FridayDealsBuying guidesBrandsStoresTermsPrivacydeal.ai apps

© Deal.ai Inc.

Deal.ai
Siless
Siless 80 mil Sound Deadening Mat

Siless 80 mil Sound Deadening Mat

Best price now

$30.49at eBayObserved at 4:34 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit eBay

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Our take on the Siless 80 mil Sound Deadening Mat

The Siless 80 mil mat is a butyl-based vibration damper for car doors, floors, trunks and panels. It comes as 36 sq ft of 2 mm peel-and-place sheets with grid lines on the backing for cutting. At $30.49 at eBay as of November 4, 2026, it sits at the low end of its recent range, making it one of the cheaper ways to start a deadening job.

Best forFirst-time car audio and road-noise projects
Doors, trunk lids and floor panels
Budget builds that need broad coverage
DIY installers with a hand roller
Pros
  • 36 sq ft covers several doors or a trunk for the price
  • Butyl core damps panel vibration without the mess of asphalt mats
  • Peel-and-place backing with grid lines speeds up cutting
  • 2 mm thickness stays thin enough for door panels and trim
  • Low entry price at $30.49 at eBay
Cons
  • A roller is not included, and hand pressure alone bonds poorly
  • 2 mm is thin for floors and firewalls; heavy noise needs more layers
  • Butyl mats add weight, so full-car coverage adds up fast
  • No foil face, so it does little for heat or airborne noise

Siless 80 mil Sound Deadening Mat prices at every store

  • eBayNew

    In stock

    $30.49Free shippingObserved at 4:34 PM
    Visit store
  • WalmartNew

    In stockSold by Siless

    $72.95Free shippingObserved at 4:34 PM
    Visit store

Siless 80 mil Sound Deadening Mat price history

Lowest price we've seen: $30.49 on Nov 4 at eBay. Tracked across 2 stores since Nov 4.

What reviewers say

Owners of budget deadening mats like this generally report less door rattle and a tighter, quieter cabin when the mat is rolled down properly. Complaints center on adhesion when surfaces are not cleaned and on the thinness for serious noise control.

Pros
  • Noticeable reduction in panel rattle and road drone
  • Easy to cut and shape with the grid backing
  • Good value per square foot
Cons
  • Needs a roller and clean, warm surfaces to stick
  • Thin for floors and firewalls
  • Can smell briefly when new

Specifications

Material Composition
Butyl
Product Type
Sound Deadening mat, Sound deadener, Sound deadening insulation
Subtype
Vibration Dampening Material
Thickness
2 mm
Length
59.9 cm
Width
40.5 cm
Area
36 sqft
Form Factor
Mat, Sheets
Intended Use
Automotive
Surface
Paint
Installation Method
Peel and place application, Hand roll to ensure good adhesion
Installation Tools
Roller is not included in the package
Ideal Locations
Car
Typical Users
Car enthusiast
Color
Black
Pattern
Grid measurements on the backing
Certifications
Industry approved BmastiC ™
Features
Peel and place application

Questions and answers

Is the Siless 80 mil mat worth it?
For a first deadening job on doors or a trunk, yes. At $30.49 at eBay as of November 4, 2026, 36 sq ft is a low-cost way to cut rattle. For full-floor or firewall work, plan on two layers or a thicker product.
Do I need a roller to install it?
A roller is not in the box, and it matters. Clean and warm the panel, press the mat down, then roll it firmly so the butyl bonds; a cheap hand roller is worth buying.
How much area does one box cover?
About 36 sq ft in 2 mm sheets. That is roughly enough for two to four doors or a trunk floor, depending on how much you overlap and trim.
Is it better than asphalt-based mats?
Butyl mats like this one are cleaner and less prone to odor than asphalt mats. They cost more per square foot than the cheapest asphalt sheets but are easier to work with.
Will it fit under door panels and trim?
At 2 mm it is thin enough for most door skins and trim panels. Check clearance around clips and wiring before pressing it down.
When is the price lowest?
Listings like the $30.49 eBay price as of November 4, 2026 tend to be the floor for this size. Watch for multi-box bundles, which often cost less per square foot than single boxes.
Where is the Siless 80 mil Sound Deadening Mat cheapest?
At eBay, for $30.49, as of our latest check.
Where can I buy the Siless 80 mil Sound Deadening Mat?
2 stores we checked sell it, including eBay, Walmart.