Search  for anything...

SOOMJ 10mm/394mil 390" x 39" 107.6sqft Self-Adhesive Car Sound Deadener Road Noise Dampener Sound Deadener & Heat Barrier Mat

  • Based on 236 reviews
Condition: New
Checking for product changes
$509.99 Why this price?

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by SOOMJ®

Arrives Nov 29 – Dec 21
Order within 3 hours and 27 minutes
Available payment plans shown during checkout

Size: 390" x 39" (107.6sqft)


Color: 10mm/394mil


Features

  • 100% Brand New, fiberglass material, Thickness: 10mm, High quality tri-layer, twin density lightweight foam laminate
  • High noise reduction & thermal insulation properties Non-flammable, flame retardant
  • The fire proofing grade with the mat is B2 and its distortion temperature is 200C.High temperature resistance Easy to cut & fit, strong adhesive backing
  • Size:About 1000mm*10000mm*10mm(394mil 390" x 39" 107.6sqft) Raw Material:High Quality foam rubber with foil Aluminum:0.1mm thickness pure aluminum / Smooth Function:Soundproof Stick:Best Self-adhesive Type:Car Deadening Material: Insulating alumina fiber &Sound insulation cotton
  • Applications: Exterior bulkhead, firewall, hood, engine compartment, engine bays. boot, wheel arch, body panels, load floor, under seat, floor, interior bulkhead. Also ideal for under floor applications as it has great load resistance properties.

Manufacturer: ‎CHINA


Brand: ‎SOOMJ


Item Weight: ‎18.76 pounds


Package Dimensions: ‎40 x 15 x 14.5 inches


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎SOOMJ-AT005


Date First Available: July 6, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 29 – Dec 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • A royal pain to install ...but excellent adhesion and very good noise/heat blocking properties.
Size: 78" x 39" (21.13sqft) Color: 10mm/394mil
BOTTOM LINE: After looking at the various manufacturers & products here on Amazon I decided to try this SOOMJ sound & heat proofing; it works pretty well and was within my budget. (I've used Dynamat before and highly recommend their products, but they had nothing big enough for my needs that didn't cost and arm & a leg.) For the SOOMJ - be prepared to spend the longer time required to properly, carefully install this stuff - or you'll end up extremely frustrated with a complete mess on your hands. THE STORY: I recently purchased a lightly used 2014 Grasshopper ZTR mower. I had an older model for years and I did the same modification to it that I'd intended for this 'new' one: install sound baffling under the engine hood, muffler shroud, operator's seat & main deck shield in order to quiet down the beast so that I can mow for hours without suffering from noise fatigue by the end of the day. Sound & Heat baffling/insulation can be applied to pretty much anything you're trying to quiet down or protect from heat (or, in my case, both). The SOOMJ baffling arrived quickly, in good shape and well-packaged; no damage to the fairly fragile product inside. THOUGHTS: First impression was of flimsiness. I unhappily discovered that, unlike Dynamat, (which has a spongy yet cohesive cloth-like texture), this SOOMJ matting gives you ZERO chance to nudge it &fudge it during installation. It's like black cotton candy fused to a sheet of thick aluminum foil. Once that brown paper backing comes off, whatever you touch with it - and I mean ANYTHING; intentional or accidental - is glommed with the SOOMJ. It instantly sticks but thankfully is just as easily removed. However the ultra-tacky adhesive sticks to whatever it touches, including your fingers, so you may want to wear a pair of thin surgical-type gloves or else you'll be washing, rubbing & scrubbing that black gummy gunk off of your fingertips for hours. The sound-deadening material itself is fluffy, almost like cotton wadding - but about as cohesive as jello. (Imagine air-whipped black paint and you'll get the general idea.) The style I purchased was in one huge sheet, like 3ft x 6ft. I quickly discovered that it's best to make a mock up pattern of what the SOOMJ will go on, tracing it onto something like heavy butcher's paper or cardboard, then transfer the pattern onto the backing or the foil side, (I used a Sharpie marker), of the SOOMJ. Just remember: preparation is the key! Measure, remeasure and then measure one more time BEFORE you cut. The aluminum heat-blocking part of this product is fairly thin and thankfully gridded (see my pics), which makes measuring & tracing on it much easier. As I said, this stuff is VERY unforgiving. Remember: once you press it, it's stuck there! Installing it was sort of like working with a giant film of partially-liquefied gummy bears fixed to a thick sheet of Reynolds Wrap. I got better at it as I went, but regardless this product scored zero points from me for user-friendliness. LOL But it's the end results that count and so far I'm quite pleased. I placed it around the rear engine/exhaust guard, mere centimeters from the muffler, and after over a month of mowing (in temps soaring close to 100 degrees) the SOOMJ has stayed intact, with no signs of breakdown or decomposition despite the intense heat generated inside that compact space over the coarse of a long hot summer's day. The install under the seat and on the underside of the primary deck shield are also holding up very well. The noise of my Grasshopper 930D has been noticeably quieted down. It's still loud make no mistake, but it's more like a Piper Cub now than a 747. With a few reservations I would definitely recommend SOOMJ to others. Just take the mistakes that I made to heart and hopefully you'll avoid them yourself - IF you decide to buy this product. ... show more
Reviewed in the United States 🇺🇸 on August 11, 2019 by SciFi-Kaiju-Guy @ TeePublic SciFi-Kaiju-Guy @ TeePublic

  • Happy so far.
Size: 390" x 39" (107.6sqft) Color: 10mm/394mil
Happy so far.
Reviewed in the United States 🇺🇸 on April 2, 2023 by Tyann Means

  • great quality product
Size: 78" x 39" (21.13sqft) Color: 10mm/394mil
i used this on several rv projects over the last two years. it seems to stick well and appears to be a good quality product. its firm not chincy
Reviewed in the United States 🇺🇸 on March 27, 2023 by Janet

  • Works very well, don't forget the tape!
Size: 78" x 39" (21.13sqft) Color: 10mm/394mil
So far so good, I used the old heat shield as a template to cut the new insulation before removing the paper backing. Make SURE to get aluminum tape to finish the edges if you want this stuff to look good and last, I used ADHES 2" wide heat resistant tape that I also ordered from Amazon. It worked perfect and was very thin and formed well. If you don't use aluminum tape on the edges I don't think that you can get a nice cosmetic finish, in addition I believe that the wind would eventually work under the adhesive of the insulation, get debris on the adhesive and eventually cause it to fail. In my photo you can see that I was fairly aggressive forming it to the shape of the underside of the hood, this causes the aluminum backing of the insulation to crack where you are stretching it, this was expected and easily repaired by adding some additional foil tape where I had cracked the covering. I will now be doing the engine cover on my boat and the firewall in another vehicle. Five stars, exactly what I needed. ... show more
Reviewed in the United States 🇺🇸 on April 17, 2022 by SavageGreene SavageGreene

  • Well worth the money - it is think - but works good
Size: 78" x 39" (21.13sqft) Color: 10mm/394mil
This stuff seems to work good. If your looking for a one source for heat and sound then this is the way to go. It is a little think but it works very well for noise and heat. I’m running a big block and this did great on the interior firewall and floors and trunk .. quieted the car right down and made it a lot cooler in the summer. Try it out only down side I can say is it is think ... show more
Reviewed in the United States 🇺🇸 on January 16, 2021 by Jason

  • Strong adhesion and close fitting, perfect for boat use
Size: 78" x 39" (21.13sqft) Color: 10mm/394mil
I used this product inside the fiberglass enclosure of my engine compartment that sits above the deck and doubles as a seating area. I needed to reduce the noise. The adhesion was better than expected, in fact i dont see this coming off unless you were to scrap and use some pretty tough remover. The depth was just right as i could not have the product hang into the engine area, needed a close fitting buffer, yet still needed a sound barrier. This definitely helped. Good product and price when i looked around at other comparable marine application products. ... show more
Reviewed in the United States 🇺🇸 on April 27, 2019 by Jennifer Amon

  • More material for the money.
Size: 78" x 39" (21.13sqft) Color: 10mm/394mil
I used it for sound reduction of undercarriage it does a fair job.
Reviewed in the United States 🇺🇸 on May 25, 2021 by Homeychick

  • Vette
Size: 78" x 39" (21.13sqft) Color: 10mm/394mil
This product was used in a 1971 Corvette to shield the firewall and transmission tunnel (both inside the car and between the transmission and a chassis). It was able to reduce but not eliminate the significant heat which pours off the engine. Not sure about the noise. The vette is made of fiberglass and noise ... show more
Reviewed in the United States 🇺🇸 on July 8, 2019 by Jim Perkins

Can't find a product?

Find it on Amazon first, then paste the link below.