What is GTMAT?

GTMAT is the new standard for Automotive Sound Insulation! GTMAT offers aluminum backed sheet material in several formulations, an asphalt based elastomeric compound, and an all butyl rubber product, and a liquid that may be brushed or sprayed on.

Thousands of customers have used GTMAT to improve their car audio experience and now you can too! 

See more details about our products here.

Not sure product which is right for your current project? Check out our GT Sound Control Product Comparison Chart.

Does GTMAT have an odor?

Our asphalt based products are low odor and our butyl products are no odor.

How do you apply GTMAT?

GTMAT is a peel and stick material. So peel back protective coating opposite side of aluminum place against vehicle surface and apply pressure with roller applicator.

What is the shelf life of GTMAT?

GTMAT may be stored at temperatures of 50 degrees Fahrenheit to 90 degrees Fahrenheit for up to 1 year before use.

May GTMAT be applied in cold temperatures?

Yes, GTMAT may be applied in cold temperatures but for best results applying heat with heat gun or hair dryer to either material or body of vehicle will help with adhesion. This will also allow for product to stretch to reach smaller creases and crevices. Keeping the material stored in recommend room temperature will also help with pliability and ease of installation.

What if I run into a problem or have questions during my installation?

We offer toll free technical support during business hours at: 855-487-6863

Why Choose Us Over the Other Guy?

GTMAT Sound Deadener has a superior temperature adhesion that is much higher than the leading discount deadener or hardware store variety products. Consider this feature when using an insulator in hot weather, or in heated auto areas such as hood or firewall - You do not want to use a mat that does not stick! Adhesive temperature range is -100F to 300F (-60C to 150C).

GTMAT Sound Deadener is an extremely durable product. Rated at 20 years fail-free for exterior use, this product will deliver a lifetime of service in your automobile. GTMAT is water, oil, solvent, salt, rust, and heat resistant.

GTMAT Sound Deadener is the perfect automotive sound insulation. The rubberized compound absorbs sound energy reducing distortion noise and eliminating panel rattle. Additionally, GTMAT adds mass to all applied panels, thus lowering the audible vibration resonance.

Just one layer of GTMAT sound dampener will reduce up to 5 DB of unwanted noise, thus making your ride sound quieter, and your stereo sound sublime! Because GTMAT is easy to apply, is permanent, creates no mess, and half the price of the leading brand, it is the obvious choice when choosing a sound dampening solution! Order GTMAT today, install it tomorrow, and finally hear what everyone has been talking about!

Where are you located?

Granger, TX - USA

What are your office hours?

Monday-Thursday: 8:00am - 5:00pm CST
Friday: 8:00am - 4:00pm CST
Sunday-Saturday: Closed

Holiday Closures 2017:

Memorial Day
Independence Day
Labor Day
New Year's Day


Do you offer free shipping?

We offer free domestic shipping to the lower 48 states. Alaska, Hawaii and International Customers please contact us directly for a personalized quote. You can reach us at 855-487-6863, or shoot us an e-mail.

When will my item ship?

We Process Orders VERY Quickly! Most items are shipped within 1-2 business days of your Cleared Payment! If you need express shipping, need to change your address, or have a special request for your order, you should phone us immediately after purchase so your concerns can be met before the item flies out the door!

Call Toll Free 1-855-GT-SOUND (855-487-6863)!



100% SATISFACTION GUARANTEE: Buy with confidence! Your order is guaranteed to arrive without defects or errors on our part or you are entitled to a 100% refund or replacement, including shipping costs in certain situations.

Our primary goal is your satisfaction, and we offer a NO-HASSLE return policy that allows you to return your order for any reason within 30 days. Rules and restrictions do apply, so please read the following very carefully before bidding on our items. Purchasing items from GT SOUND CONTROL LLC assumes agreement with our terms - if you do not agree to abide by these rules, please avoid buying.

Most all listings/items are eligible for our guarantee, but some listings may be exempt. The product description in each listing will indicate if the item is covered under this guarantee and for how long, or may indicate the item is sold AS-IS with no guarantee. Due to the extreme shipping cost and transit times international orders are usually not covered under our Standard Guarantee.

Our guarantee is simple and easy to support. Got an issue? Call us TOLL FREE 1-855-GT-SOUND (855-487-6863). We appreciate your choosing GT SOUND CONTROL and your complete satisfaction is important to us. Therefore, we allow any order to be returned for any reason within 30 days of purchase. We do have rules for the return process and restrictions for certain situations, but our customer service department will work hard to earn your business and MAKE IT RIGHT!

If you would like to return your order for refund or replacement, you must first contact us for Return Authorization. Customers must obtain and purchase their own shipping for returning orders. Return shipping costs are generally not refundable. In order to process the return, customers will be asked to:

Contact us for an authorized return merchandise (RMA) number. 

Still not satisfied? Let us know how we should have handled your order so we can continue to improve our product and services!


What payments do you accept?

We accept all major credit cards by phone: 1-855-GT-SOUND (855-487-6863)

We accept PayPal instant and eCheck payments.

Regardless of how you pay, we will delay your shipping until all funds have been received and Cleared.

PayPal eCheck payments often take 3-4 business days to clear, so if you have paid via eCheck instead of Instant Payment, we will delay your shipping until the eCheck has cleared.

We are required to collect 8.25% sales tax for items shipped to Texas addresses.


Please contact us either through our online contact form, or directly call us toll free at: 855-487-6863.