Eastwood X-MAT® Underhood and Headliner 51x39x1/4

Apply under the hood and headliner to reduce road noise and heat.

Eastwood X-MAT Underhood and Headliner 51x39x1/4 - EW15825

Eliminate road noise, body panel vibration and excess heat from your vehicle!

▶   X-MAT® Lightweight Sound and Audio Barrier provides the ultimate in acoustic and thermal protection for your muscle car, street rod, boat or RV
▶   Lightweight X-Mat with 2 layers offering great temperature and sound reduction capabilities
▶   Closed-cell foam with waffled foil facing supplied in one sheet for large areas
▶   Easily trimmed and installed under roof panels under hoods, trunks and more so you can enjoy your ride in greater comfort
▶   Conforms well to complex interior contours and shapes
▶   Withstands up to 350℉, reduces heat as much as 105℉ and sound by as much as 8dB
▶   Covers 13.8 square feet

Eastwood's X-MAT® Products lead the way in automotive sound control and heat abatement technologies.X-MAT® is engineered for both classic and late model vehicles to accommodate the needs of today's demanding environments. X Mat Underhood and headline Mat is perfect for outer paint protection, heat absorption as well as reducing rattles and road noise. Maximum temperature 350℉, reduces heat by as much as 105℉ and a decibel reduction as much as 8 db or 9%. Easy to cut and contour and the strong adhesive back ensures they will stay in place for years to come. Includes 1 sheet 51In. x 39In. x 1/4In.

Features & Benefit

Features & Benefit


Always wear gloves and eye protection when cutting and installing this material.

Watch X-Mat Series Video

X-Mat Series | Sound Deadening & Thermal Protection Solutions

X-Mat Series | Sound Deadening & Thermal Protection Solutions

This video goes over the X-Mat product series, which includes a number of specialized products that will help keep your ride cool and quiet!

  • Simple installation - great results!
    I had to take the interior out of my '94 GMC Yukon due to some other work. With the headliner out, that expanse of bare sheetmetal just begged for attention. The X-Mat cut easily with scissors and wasn't a problem to install by myself. Just peel back the backing along an edge, press it firmly to the sheetmetal, and then slowly pull the rest of the backing off and press it in place. With the diesel engine, the Yukon had a fair amount of resonance and vibration before the X-Mat installation and that is now gone.
  • Easy Install and Worked Great
    Wow, what a difference. A quick cut and install of this and the noise inside the cab dropped dramatically. I can't wait for rain so I can not hear it echo in the truck
  • perfect size
    Replaced the 50+ yr. old headliner material in my project car with x-mat, easy installation, perfect size. Deadened the drumming of the sheet metal nicely. Seemed to adhere as it should. Only time will tell if it stays in place under hot sun conditions at car shows
  • Perfect fit
    I replaced my fiberglass original headliner insulation. This product fits much better and keeps my car quieter.
  • Easy install.
    Purchased for a friends 48 Plymouth. Just follow instructions, make sure surface is clean and in no time its up. Much better than the old jute insulation
  • Sound deadning
    Application was easy, haven't gotten to actually test it ( hence 4*) since I'm doing a frame off but sure it will.