[turbo6bar]

BG, for the floors, I use a product called 'Sealer's Choice.' It is about $80-120 for one gallon and you probably need no more than a pint. It is available in smaller containers, I believe. You can choose to seal just the grout, or the grout and tile. For the floors, I use a simple squeeze bottle that has a cap with brush tip. I run the brush across the grout and squeeze the bottle to dispense the sealer. It's quick and don't worry about putting down too much. I usually put down enough to obtain a healthy 3/16" bead of sealer on top of the grout.

I don't have any hints for the wall tile. I would apply the stuff with a rag in several sessions until the grout accepts no more.

For the floors, I have found one application does the job. On vertical surfaces it will take more than one application, obviously.

For the Sealer's Choice, call a few tile stores (not Home Depot or Lowe's). You will pay more for the sealer, but it is the one the pros recommend. I have some rental properties with tile. The sealed grout will still get dirty on the surface, and I use a hydrogen peroxide solution (designed for cleaning floors) and a carpet extractor (steam cleaner) to clean the tile floors. This makes the floors look great.

Good luck,
jurgen