FatMat vs. Dynamat vs. Hushmat vs. Peel and Seal

So you’ve decided to upgrade your car stereo system? Don’t ever forget to put “adding a sound deadening material” on your to do list. Sound deadening materials are very effective at making your sound system perform at its very best.

Have you ever noticed that the music sounds great in your car when you’re parked than when you’re on the road? Have you ever asked yourself why? Have you ever wondered if there’s a way to cut down the noise in your car?

We’ve worked and installed hundreds of car audio systems over the years, and we still love that smile on our customer’s faces when they step into their vehicle after it’s been fitted with a sound deadening material.

Sound deadening materials play a major role in cutting down the noise coming from tire hum, engine whine, wind, exhaust, nasty rattles and vibrations, so you can listen to your music without that unwanted, extraneous noise.

Aside from cutting the unwanted, extraneous noise, sound deadening materials also make your vehicle acoustically sound. How?, Well, let me ask you a question: have you ever heard or seen a speaker mounted in a metal enclosure?  Absolutely not. A metal enclosure isn’t the ideal material to make a speaker enclosure with. Yet, that’s exactly what’s inside your vehicle and that’s how your car door speakers are mounted. They’re mounted in a tin can, literally.

To remedy that problem and make your vehicle acoustically sound, you must use a sound deadening material. The problem is that the sheer number of sound deadening materials available online or in car audio stores is enough to make your mind spin.

We’ve had a ton of requests from people asking about a good sound deadening material. So, instead of replying to each email individually, we’ve put together this complete, all-inclusive guide to help you know what makes the difference between Fatmat vs Dynamat vs Hushmat vs Peel & Seal.

The Witness: Dynamat

In this corner, we’ve got Dynamat! Which is one of the best sound deadening materials on the market. It might a bit expensive than most sound dampening materials out there, but it’s a very well-engineered sound deadening material that’s very efficient at cutting down unwanted noise and making your vehicle acoustically sound.

Dynamat offers different kits for the doors, the trunk, the headliner, and the hood. If the budget isn’t an issue, you can buy Dynamat in bulk and wrap the whole cabin in it.

You’ll get noticeable results even with partial coverage. The minimum coverage recommended by Dynamat for basic resonance control is 30% of the area of any panel when using Dynamat Xtreme.

Of course, while a little Dynamat can make noticeable difference , more is better. In fact, Dynamat says that doing the whole cabin  vehicle can reduce road noise by 9 – 18 dB. For reference, a 10 dB drop cuts road noise in half.

The Witness: Fatmat

Fatmat is another well-known sound deadening material. It’s twice cheaper than Dynamat, and it’s less efficient. Fatmat is asphalt based. It has a distinctive freshly paved road smell to it. It’s not recommended for high temperature situations. So, if you’re living in a hot climate area like Florida or Texas, Fatmat is a big NO-NO for you.

The key is to look for a sound deadening product made with rubberized material or butyl rubber because these materials won’t excrete stinky smells or melt when it gets hot.

The Witness: Hushmat

Hushmat is a sound deadening materials tha we can say is relatively similar to Dynamat in terms of sound deadening, thermal insulation and adhesion. The best part is that Hushmat is a bit cheaper than Dynamat. It also thinner but offers significantly higher density that competing products.

Because there are no cheap/plastic fillers or asphalt resins, Hushmat does not produce any odor even at high temperature degrees.

The Witness: Peel and Seal

Peel & Seal is another great cheaper alternative to Dynamat. It’s a decent sound deadening material at its price point. However, it’s not better than Dynamat. Sound deadening materials are one product that really does abide by the rule “you get what you pay for”.

Peel And Seal is asphalt based. And It’s well-known that exposure to asphalt can lead to serious health problems such as headache, skin rash, sensitization, throat and eye irritation, cough, and skin cancer.

That said, and in case the budget isn’t an issue, I’d honestly recommend going with some other non-asphalt based sound deadening material especially if you’re living in a warm climate area.

FatMat vs. Dynamat vs. Hushmat vs. Peel and Seal

 Dynamat-XFatmatHushmatPeel & Seal
Price> $4/sqft< $2/sqft>= $4/sqft< $2/sqft
Asphalt in MixtureNOYESNOYES
Asphalt OdorNOMoreNOMore
Sag Temp Rating > 240 °F< 240 °F> 240 °F< 240 °F
Nominal Thickness (mil)6750/8050/8045