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.
However, when grout is used in place of caulk, the grout can cause structural and aesthetic problems. 1  The grout will crack allowing moisture to penetrate. 2  Where the grout is sufficiently strong, movement in the walls, floor, or countertop can damage the tile.  Grout cannot hide corner cuts as well as caulk.
Cement-based grout. Grout comes in two basic types, and the choice of which one to use depends not on the tiles but on the width of the joints between them. Narrow joints of 1/8 inch or less call for unsanded grout, a pudding-smooth blend of Portland cement and powdered pigments mixed with water.