You can use the flooring as a parking pad, so you don't need exact dimensions. If you are planning an adhered, wall-to-wall installation, you would measure the width and length that you would need to cover your garage with the flooring all going in the same direction.
Yes, if you enter 12 for the quantity, you will receive a 12' long x 10' wide piece of flooring. It would only be multiple pieces if you ordered over 100'.
The flooring is 100% vinyl and is completely waterproof. It can be installed outdoors using a full glue down installation. Be sure to use an acrylic based adhesive that is suitable for vinyl and is rated for outdoor use. Follow all manufacturer's instructions for installation.
It is recommended that the flooring be installed over a smooth, clean and dry sub-floor. It does not require an underlayment, but you could add one as long as it still provides a solid, smooth, clean and dry sub-floor. It can be fully adhered using a acrylic based vinyl adhesive.
Probably will lift some depending on how much suction you would use. I have 35' of it in my garage floor and it seems to be fairly heavy material.
The linear foot weight is 6 lbs., so the total for 22 feet would be 132 lbs.
For outdoor installation, it is recommended that the product be fully glued down to a smooth level subfloor with an acrylic based adhesive, suitable for vinyl and rated for outdoor use. This flooring is extremely durable and will not break down from sunlight; however, it is not fade proof and direct sunlight may cause the color to fade.
This product is high quality and extremely thick
So happy we got this! Makes it easier to sweep leaves