How to Install Sound Deadener

How to Install Sound Deadening Material in a Car

How to Install Sound Deadening Material in a Car

How to Install Sound Deadener

We've built Damplifier Pro and Damplifier to be the best sound deadening mats money can buy. We have specifically formulated our butyl rubber sheets with enhanced elastomeric properties. Nobody can match the thickness and quality of Damplifier Pro's butyl or our foil constraint layer. The result is the best vibration control and heat dissipation for your vehicle.

Add to that our extra-strength adhesive and Damplifier Pro is going to stick to your vehicle for its entire life. It will never become a sticky mess for you to clean up. It will not fall off. Excuses are for the other guys.

Alright, let's get to how to soundproof a car. Installing sound deadening mats is a straight-forward process, but there are some tricks to doing it right that will save you time and money.

Step 1

Remove upholstery to expose the bare sheet metal. Ensure no debris, rust, or waxy oils. Clean surface with denatured alcohol.

Step 2

Cut sound deadening material to the desired size using a sharp utility knife. For smaller surface areas, measure dimensions and cut to fit.

Step 3

Peel off the paper liner and adhere to surface. Roll on with a hand roller to remove any air pockets and ensure a proper bond.

That's all there is to it. Seriously. For those of you that are visual learners, check out a several videos of people installing Damplifier Pro.

Sound Deadening Application FAQ: Tips & Tricks

How do You Apply Sound Deadening Material?

We sell our Second Skin sound deadening mat products in easy-to-work-with sheets. If you can measure, peel, and stick you can install Damplifier™ and the twice-as-thick Damplifier Pro™ sound deadening mats. You’ll want to apply pressure with your hand to position the mat, and then use one of our wooden hand rollers to stick it down firmly to the metal surface.

If you're applying a whole sheet, some customers find it easier to peel back a small portion of the release liner at a time and work their way across the panel. If you have any air bubbles, you'll want to roll them out with your hand roller or puncture them and then roll them out.

What Tools Do You need to Use?

You only need a few. Use a utility knife to cut the sound deadening mats to fit into irregularly shaped parts of the car. We recommend using a sharpie and a ruler to measure and trace before you make any precise cuts. After sticking the mats to the metal with your hand, use a wooden hand roller to ensure you've you've bonded the mats to the metal. We always use wood because we've found that metal or rubber rollers can either damage the mats (metal) or don't do a good enough job of rolling them down (rubber).

We sell both the utility knife and the wooden hand roller together at a discount in our Sound Deadening Mat Tool Bundle.

Where Do you Apply the Sound Deadening Mats?

Our sound deadening materials can be applied directly to all types of metal. All Damplifier™ sheets use a very strong adhesive, so they can even be applied straight to fiberglass, plastic, and wood surfaces, although those materials don’t tend to vibrate as much as sheet metal or aluminum. You can make a meaningful difference in structural noise to all of your vehicle's metal surfaces: the doors, floor pan, trunk, firewall, hood, and roof.

How Much Surface Area Should You Cover?

To see noticeable sound deadening, you must cover at least 25% of the surface with the Damplifier™ mats. We recommend at least 60% coverage while focusing on covering all the flat metal panels, because the curved parts of the car tend to be more structurally sound. That strategy will get you to 95% total effectiveness. Many customers choose to cover as close to 100% of any metal surface as possible, either because they also want to thermally insulate their car or they just want to max out their results while they have the interior of their car on the floor of their garage.

For parts of the car you want to thermally insulate (usually the roof, outer door skins, firewall, and hood), 100% coverage is always preferred for the extra heat insulation.

How Do You Ensure It Sticks Well?

Second Skin sound deadening mats create a very strong bond with sheet metal; it’s honestly hard to make it not stick. To ensure the best bond, we strongly recommend cleaning the metal surface first and then following the product specific instructions.

  1. Start by removing the upholstery and carpet from your car. Vacuum the entire area to remove loose debris and dirt. Then clean any greasy spots with denatured alcohol. If you use another solvent or degreaser, you may leave behind a film that will prevent a solid contact surface. Allow the metal to dry.
  2. Cut Damplifier mats to the desired size with a sharp utility knife. We recommend wearing gloves because the foil edges are sharp.
  3. Peel the wax paper liner from the back of the mat, and adhere the tacky butyl side to the sheet metal. Slowly work the Damplifier onto the panel with a hand roller to ensure it bonds.

If you want to learn more about other soundproofing materials you can use in combination with Damplifier, take a look at our Installation Guide. You can also give us a call and we'll be happy to help out.

Complementary Soundproofing Materials to Consider

Max Out Your Results WITH Sound Blocking Material

Have you ever closed the door to a luxury vehicle and felt the world go silent around you? That’s why we recommend our customers combine Luxury Liner Pro with their sound deadening solution. Using the two products together will add a layer of airborne protection to your structural sound deadener and give you the silence of a luxury car.

Too Much UnderHood Heat

No problem. Damplifier and Damplifier Pro will handle up to 450 degrees Fahrenheit, which is a 50% higher temperature rating than many of our competitors’ products, and plenty high to go on the inside of your firewall.

While the thick foil, butyl rubber combo in Damplifier serves as a radiant barrier and reduces thermal transfer, sometimes you need additional heat insulation. If you need even more thermal protection, check out Mega Block, our best automotive heat shield.

Or Take A Look at All our Soundproofing Options