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Mixing Bathroom Tile Grout

Mostly, bathroom tile grout, including wall and sanded floor grouts are made from Portland cement. Sometimes powdered latex or acrylics are added to make them last longer and bond more easily. You can add acrylics in a liquid form, but some people find that they do not mix well with the pigment in colored grouts.

Bathroom tile grout should be purchased in a plastic-lined bag so that no moisture or air vapor can spoil the grout. Never use grout that has lumps in it. That means moisture has spoiled the grout and it will become crumbly and disintegrate after a while. There is another reason that this can happen. If too much water is added to the grout when mixing, it will also disintegrate. The consistency of the grout should be that of a paste, not runny. It should stick on the grout float and not sag or drop off. If, by accident, you do add too much water, add more dry powder to thicken it to the right consistency. You should never prepare more grout than you can use up in half an hour.

After that it is going to start setting. Don’t add more water, it will just break the bonding that is forming, and it will not set again properly. The funny thing about grout, and other cement-based products, like concrete, is that although it is destroyed by the addition of water after the initial mixing, it should dry very slowly. Maintaining this moisture actually helps to cure the cement so that is gets very hard.

The secret is not to mix too much water in, but to keep it damp once the initial drying out has begun. Paper towels dampened and laid over the tiles and kept just damp enough to stick with a soft mist spray can help. Just be careful not to let water run and mix with the grout. A humidifier would also work.

Bathroom Tile Grout – Grouting

There are different types of grout for different tiles. If you are using marble tiles, use a sand free, or acrylic latex bathroom tile grout. A sanded type will scratch the marble. In other cases, the type of grout depends on the width of the spaces between your tiles. If the spaces are less than 1/8 inch, use an unsanded grout. If they are wider, use a sanded grout. When your newly fixed tiles have dried up overnight, mix the grout to the correct proportions. Apply the bathroom tile grout with a grout float, working small areas at a time. Use the float to spread the grout, and press it into the spaces filling them completely. Hold the float at an angle and squeegee off the excess. If the tiles are more than 1/8 inch apart (usually floor tiles), use a grout shaper to make neat concave hollows between the tiles, or, if you prefer leave them flat.

As you work, keep a bucket of water and damp sponge to wipe away the excess grout from the upper edges of the tiles. Be very careful firstly, not to use a wet sponge, but a well squeezed out damp one or else you will be adding water to the bathroom tile grout and weakening it. Secondly, just give each joint one wipe so that you don’t scrape out grouting from the spaces. When you are finished, let the grouting dry overnight, then clean the tiles with a damp rag then polish them with a dry cloth to remove the dusty haze left behind. You can apply a grout protector with a paintbrush when there is no trace of moisture left. It will preserve the color.

Bathroom Tile Grout – Re-grouting

If the bathroom tile grout is not actually damaged or disintegrating, you can use a grout reviver, which is like a paint, to restore the color. For damaged grouting, re-grouting is the only way. It is much the same as grouting, except that you have to remove the old grouting first. Matching color can be tricky, unless you have a spare tile to take into the store. You should get a color chart from your dealer and bring it home to check against the existing tiles. Replacement grout for tile counter tops should be mildew and stain resistant. Carefully use a grout saw to remove the old grout. Then you can use a 50/50 dilution of vinegar to clean out the spaces where the old grout has been removed. While the joints are slightly damp (not wet), apply your bathroom tile grout, and finish off in the normal way.

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