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).
Grout is often considered the last step in a tile installation -- the one that pulls the look together. But grout isnât as resilient as the tiles it surrounds, so protecting it with sealer is a smart decision. Common tile grout is a cement-based product thatâs mixed into a spreadable paste with plain water.