There are 4 colors on the Home Depot web site: Cedar Wood, Shadow Gray, Graphite and Spring Grass.
The XL Tiles should be installed over a solid surface. You can install over dirt but you want to be sure the dirt is firmly tamped down. Additionally we recommend putting a weed protection mat down between the tiles and dirt to prevent grass or weeds growing up through the tiles. We do not recommend installing over grass.
Yes, these are slip-resistant.
We recommend putting a underlayment (even as simple as weed block fabric): the legs underneath the tiles may puncture the epdm rubber w/out the underlayment. TIles can be cut to fit your space using an electric saw. The tiles interlock on all 4 sides but you will not need the interlocking tabs on the outer portion of the deck. Most people will leave the edges as is for 2 sides of the deck and trim the other 2 sides to fit the space.
The XL Tiles are very comfortable underfoot.
Hello MB, Thank you for the inquiry about the XL Tiles 1.24 ft. x 1.24 ft. PVC Deck Tiles in Shadow Gray, 35-Tiles per Case, 54 sq. ft. What I found on homedepot.com is that the case of 35 tiles is .18 cents less per tile than the case of 14 tiles. Please make sure you have accessed our website using the link above and your ship to zip code for the most accurate pricing. For any other questions, please call us at HomeDepot.com Customer Service 800-430-3376. Thank you for shopping Home Depot.