What sound efficiency tests have been done with this material to prove scientifically works? what is its’ stc (sound transmission class)

The data can be found on our website, here it is also: Sound Transmission Loss - Luxury Liner Pro Mass Loaded Vinyl 1 lb/ft² + Closed Cell Foam: (Sound Transmission Loss, in dB, Frequency in Hz) Frequency (Hz) 125 250 500 1000 2000 4000 Sound Transmission Loss (dB) 20 21 25 28 32 42 STC 26 Luxury Liner Pro Thermal Value Test: DIRECTION OF HEAT FLOW R-Value LLP UP 9.50 DOWN 17.75 HORIZONTAL 11.22 R-VALUE PER INCH 4.45 Tested in accordance with ASTM C-177 and ASTM C-518

What’s the R-value of this product?

DIRECTION OF HEAT FLOW R-Value Heat Wave Pro R-Value Luxury Liner Pro UP 7.85 9.50 DOWN 16.39 17.75 HORIZONTAL 9.91 11.22 R-VALUE PER INCH 3.91 4.45 Tested in accordance with ASTM C-177 and ASTM C-518

Does it have to be glued down. Could it just be layed over butyl and then covered with the carpet

I would say it doesn’t have to be glued down. I just finished a 1970 Chevelle from the firewall to the top of the back wall. I did tack glue it on the sides at the door jam and kick panels just so the carpet lays flat, otherwise the mat “lifts” at the edge and disturbs the lay of the carpet. Also I made relief cuts over the compound curves and sealed the seams with 2” wide vinyl strips.

Will this work for exhaust drone?

Yes, Luxury Liner Pro Mass Loaded Vinyl is the material that blocks out exhaust drone, engine/diesel/turbo noise, and other air borne noises. Luxury Liner Pro is Mass Loaded Vinyl infused with Closed Cell Foam so it is ready to attach to your CLD vibration mats or the metal of your trunk, floor, doors, and walls. Keep in mind barrier layers like MLV need to be as close to 100% coverage as possible to fully block out sound. You want to get this product between you and the noise source (i.e. cabin floors, trunks, cabin firewalls). Luxury Liner Pro also offers a great thermal insulation barrier to keep your A/C inside the vehicle and the hot air out and vise versa in winter.

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🔇 Transform your ride into a quiet luxury sanctuary

DOUBLE WALL DEFENSE - Closed cell foam side down creates a powerful sound and thermal barrier with a ‘double wall’ effect.
HEAVYWEIGHT CHAMPION - At 1.25 lbs per sq ft, this mass loaded vinyl delivers serious sound deadening power—no ceiling hanging allowed.
PRECISION FIT MAXIMUM COVERAGE - Flexible 3/8” thick sheets contour perfectly with minimal gaps to seal out noise and heat.
SILENCE THE ROAD OWN THE DRIVE - Luxury Liner Pro blocks engine, tire, and road noise for a serene cabin experience.
MADE IN THE USA TRUSTED WORLDWIDE - Crafted by Second Skin Audio with 20 years of expertise in premium automotive sound insulation.

Second Skin Luxury Liner Pro is a 3/8” thick, 9 sq ft mass loaded vinyl sound barrier fused with closed cell foam, designed to reduce airborne noise by over 10 decibels inside vehicles. Ideal for floors, firewalls, and trunks, it blocks engine, tire, and road noise while also insulating against heat. Heavy and flexible, it requires strong adhesive application and is proudly made in the USA by a trusted industry leader.

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Manufacturer	Second Skin
UPC	731236583011
Country of Origin	USA
Item model number	LYSB01NAFWT3S-ELECTRNCS
Product Dimensions	60.96 x 0.64 x 137.16 cm; 5.44 kg
ASIN	B01NAFWT3S

Second Skin Luxury Liner Pro MLV Mass Loaded Vinyl Closed Cell Foam Sound Deadener - 9 sqft Sheet

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