Control arms hold front wheels, allowing up and down movement. of the front suspension. The control arm is an important part of the front suspension. It connects the steering knuckle (the part that holds the front wheel) to the vehicle's frame or body, see the photo.
Often, installers use grout in place of caulk for these reasons: 1  The caulk may not exactly match the grout color.  Even when the caulk exactly matches the grout color when installed, it may not match six months later (caulk will age differently from the grout).
Epoxy tile grout is a durable, stain-resistant substance used to fill in the spaces between rows when installing tile. Epoxy grout is different in its make-up and offers some useful properties that regular grouts do not. It is most commonly used for projects that require a more impervious surface, such as those exposed to grease, chemicals, or high amounts of traffic.