a few tiles are cracked near the sink. How can i fix it temporarily ( is it worth it?) or should i replace the tiles or the whole thing? how would i go about doing that?
You need to chip out the grout and cracked tile, and replace them, if you can find an exact match, otherwise replace them all on that side, then you can either match it to the other side or use another color, or style, like if you have four inch tiles on the remaining side, use subway (rectangular) tiles on the sink side. or go for an checkerboard with square tile in white and an accent color.
If you can find the same tile, or even very similar tile, you should take up the exising tile and replace it with new ones. You will need to start by removing the grout between the tiles. You can buy a grout removal tool at most hardware stores, but it is 10 times easier if you have a rotary tool like a dremel or rotozip. With the grout near the effected tiles removed, you can use a rigid putty knife to pry the damaged tiles off the countertop surface. You may need to use a hammer to tap the tip of the putty knife under the broken tiles. Try not to touch undamaged tiles! Once the tiles are out, use the same putty knife (and hammer if necessary) to remove all or most of the mortar and grout from the exposed surface. You will need to mix new thinset or mortar to lay the new tile in. Lowes and Home Depot usually sell thinset and grout in smaller packages for small jobs or repair work. If the tiles are small, you will not be able to properly spread the mortar. Put a dollop of mortar in the center of where each tile should go and press the tile ontop of it to spread the mortar around. If it leaks out the side and comes up to the surface of the tile, make sure to clean it up before it dries. Once the new tiles are in place, let the mortar dry for a few hours (longer if it is humid). You can then mix the grout and spread it in the gaps near the new tile. Let the grout dry for about 10 or 15 minutes and then wipe the tiles clean and smooth the new grout with a damp sponge. The mortar and grout can be mixed with just water, especially for such a small job. Some stores might try to get you to buy the liquid additives for each. These are designed to keep the mortar and grout pliable for longer periods of time and are not necesssary for small jobs. Good Luck. If you need more info on a given step just say so.
see if you can find new tile same color at store, then chip it out, buy some thin set or use liquid nails, then mix up a small amount of grout or buy the liquid squeeze out of a can grout,