How-to
Tiling

How to seal grout: protect tile floors and showers

Sealing grout prevents staining and mold growth. Here's how to do it correctly and how often.

5 min read
Table of contents

What you need before starting

Gather the right tools and materials before you begin. For sealing grout, you'll typically need basic hand tools, safety equipment, and the correct replacement parts or materials.

Step-by-step process

Start by turning off power or water as appropriate. Remove the old component carefully, noting how it was installed. Install the new part following manufacturer instructions and local code requirements.

Common mistakes to avoid

Don't skip safety shutoffs, don't overtighten fittings, and don't assume all parts are universal. When in doubt, consult the manufacturer's guide or call a licensed tiling contractor.

When to call a professional instead

If you encounter unexpected damage, the job requires a permit, or you're unsure at any step — stop and call a licensed tiling contractor. The cost of a pro is far less than fixing a DIY mistake.

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