Here's a comparison chart I was able to find. However, all this information does vary, so it's probably best to check it against your own research, but it should definitely give a rough idea. The engineered wood fiber (EWF) surfacing needs to be maintained, and raked out often, since it gets kicked out from under swings and at the base of slides especially; and it also needs to be topped off when it gets below the target amount for a certain fall height. The rubber requires less maintenance, but yes, it does need to be replaced eventually (the manufacturer's warranty should tell you about how long it lasts).
Also, if you're figuring in the cost of EWF v. rubber surfacing, you need to take into account the different types of site preparation needed. Rubber is installed over a level concrete pad, and EWF is installed over a level dirt surface. So, if you're starting with dirt and wanted to install rubber, you'd have to add the cost of laying down a concrete pad in addition to the actual cost of the rubber surfacing. Similarly, if you're starting with a concrete surface but wanted to use EWF because it was less expensive, you'd have to see how much it would cost to tear up the concrete pad because after all that site prep you may not be saving that much money in the end. It's really really important not to put EWF directly over a concrete surface.
Thanks for asking such a great question! If you end up deciding on rubber, and you're starting with a dirt surface, you have a couple of install method options (laying concrete and then doing a surface mount installation of playground equipment, or installing the equipment first into holes in the dirt surface and then pouring the concrete pad afterwards), and I can explain those in greater detail as well.
Type of Surfacing
ADA Accessibility
Estimated cost per sq foot
Estimated cost per
2500 sq feet
Fall height to meet CPSC standards with 9 inches of surfacing
Rubber Tiles
Yes
$9
$22,500
12 feet
Engineered Wood Fiber
$1
$2,500
6 feet
Poured-In-Place Rubber
$12
$28,000
Shredded Rubber
*Yes
$4
$10,000
Gravel
No
.5 - $1
$1250 - $2500
Sand
5 feet
Grass / Dirt
$0
0 feet
Backyard Mulch
*N/A
* Depends on vendor