Kinda-sorta. It's hard to get paint to stick well to plastic, so be prepared that the paint will peel quite quickly.
yes
VERY difficult. -It's easier to paint over it with special grout paint.
Depending on where you purchase the grout, you can actually have the grout colored to any color of your choice. Like paint, you can take in a color swatch and get the grout dyed to match the decor.
Chalkboard paint is fairly easy to make. It takes 1 part non sanded grout to 8 parts paint. Non sanded grout is available at any home improvement store.
Most likely if bleach has lightened it, you will not be able to simply reverse the problem. The easiest solution is to paint the grout. Most tile stores will sell this. It is thinner then paint, but you will see very good and quick results. The only other real option is to regrout the floor. Since this is time consuming and messy, grout paint is the best choice.
If the grout is dirty there is a chance that the new grout will not stick over it. If you clean it out first the likelihood of it working increases, as well as looking better in the long run.
You can try to clean it with bleach or a special grout cleaner. White grout tends to turn yellow with time. You may want to dig out some of the grout and put new over it. Then be sure to seal the grout - an ongoing process.
If it's only a bit of glue you're referring to that's fine. You woulldn't want to grout over a continuous run of it.
It depends on the type of grout you used. Typical cement-based grouts cannot adhere to existing grout in lines of less than 1/8" deep, and it's advisable to remove all the grout and do over. If your grout is an epoxy-based grout, or some varieties of pre-mixed grout, it might be possible. Check the label to see if it adheres to existing grout, and at what thickness.
You remove oil based paint on tile floors by using a strong detergent mixed with water and a soft cloth
Yes.
AnswerMix up a paste of bicarbonate of soda and water. Best to use a paintbrush or something similar to paint the paste onto the grout. Leave for a few hours and then wash off. Grout should be sparkling white. For really stubborn stains, use the same paste on a soft toothbrush and some old fashioned elbow grease.There is a product from Australia that is a broom on mop off grout cleaner no nasties www.pinkstuff.com.au
Prime first with gray metal primer. Measure and mask off grout lines with 1/2" masking tape. Paint what's left with brick red paint.