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 a cement based grout normally used on smaller tile joints. It is recommended in floor and wall tiling projects with grout joints spacing between 1/16th to 1/8th inch. When non-sanded grout is used to fill wider joints, the grout could possibly crack due to the lack of bonding that the sands provide. This grout is designed for use in tile surfaces that are dry when the grout is applied. The water retentive additive allows the grout to stay moist until the cement cures properly.