Question 1

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

Accepted Answer

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

Question 2

What’s the R-value of this product?

Accepted Answer

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

Question 3

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

Accepted Answer

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.

Question 4

Will this work for exhaust drone?

Accepted Answer

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.

Product dimensions	137.2L x 61W centimeters
Manufacturer	Second Skin
UPC	731236583011
Part number	LLP
Item Weight	5.44 Kilograms
Item model number	LYSB01NAFWT3S-ELECTRNCS
Size	1 Sheet, 9 Sq Ft
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

Second Skin Luxury Liner Pro - 2 in 1 Sound Insulation for Cars - Mass Loaded Vinyl and Closed Cell Foam - MLV Noise Barrier Made in USA (1 Sheet)

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