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).
Non-sanded grout is used most on vertical surfaces, like shower walls, because it is stickier than the sanded version aiding in tile adhesion to a wall. Epoxy grout is the premium selection in marble grout. It contains little or no sand, will withstand prolonged use and is waterproof as well as stain resistant.