I'm asking because I've never seen or used one:
I have no idea what they feel like, how cushy, how much insulation or how durable they area. I'd like your opinion about the following, to compare and contrast....
When I put my floor in, I had extra underlayment. Specifically Quick Step Combi Floor Plus:
"This unique, three-in-one underlayment offers improved sound-absorption, moisture protection and embossed self-leveling."
I squared it off by eye and came out with this piece:
The GG Thinlight 1/8 specs are:
19 3/8in x 59 1/8in x 1/8in
high end weight: 92g
The Underlayment piece specs are:
61in x 26in x 1/8in
measured weight: 106g
By my calculations...
0.080310986 grams per sq in
0.069508197 grams per sq in
Can someone check my math? Also, anyone that has used the GG piece and handled underlayment, can you compare?
When laying on my hard, hard, laminate floor with this stuff under my back, it actually makes a noticeable difference. *shrugs*