How to Grout a Bathtub
Grout is one of a number of building materials used in bathroom applications such as bathtub installation. Like caulk, grout is used to fill in and seal gaps between the bathtub and both the wall and floors or tile. Over time this grout can become discolored, cracked or simply worn away. This means that you may find yourself having to grout the tub all over again. With the right tools, this is a simple procedure that can be done quickly and relatively inexpensively. Does this Spark an idea?
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Instructions
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Mix the grout powder with water in a bucket to create the paste that will be applied to the bathtub. Alternate the addition of water and powder to slowly build to the consistency you require. Aim for a grout thickness where it cannot be sloshed around or poured out on its own but rather has to be scooped out in clumps.
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Apply a liberal amount of grout to the joints of the bathtub where the fixture comes into contact with another surface. This includes the walls that butt against the tub, as well as the flooring and anywhere else that may be applicable depending on how the tub is positioned in the bathroom.
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Pack the clumps of grout deep into the joints, using a trowel. Fill the joints thoroughly with the mixture so no air pockets are left between the tub and the wall surface. Excess grout is fine as it will be removed later. Just focus on completely filling the gaps.
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Remove the excess grout from the surface with a grout float and a damp sponge. The float will allow you to sweep away the majority of excess while leaving a smooth grout surface even with the surface of the tub. Use the damp sponge to gently rub away any grout left on the tub or wall itself so it doesn't dry and stain. Allow several hours for the grout to set and dry.
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Lay down a line of waterproof latex plumbing caulk over the grouted joints. This will seal the grout and prevent it from becoming discolored and worn down by moisture.
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Tips & Warnings
Depending on your water supply, hard or dirtier water has been known to discolor the grout and cause unsightly spots in it as it dries. To avoid this, consider using distilled water to mix the grout.
