How often should grout be sealed?

Grout should be sealed every 1-2 years in most bathroom applications, though the frequency depends on the type of grout, sealant quality, and bathroom usage patterns.

Sanded grout used in wider joints (over 1/8") typically needs sealing annually, while unsanded grout in narrow joints may last 18-24 months between applications. High-traffic bathrooms, especially those used by multiple family members daily, will need more frequent sealing than guest bathrooms. The key indicator is water absorption - if you notice water soaking into grout lines rather than beading on the surface, it's time to reseal.

Quality matters significantly when it comes to grout sealers. Premium penetrating sealers can extend protection to 2-3 years, while basic topical sealers may only last 6-12 months. In Ottawa's climate, where temperature fluctuations can cause expansion and contraction in bathroom materials, using a high-quality, flexible sealer helps maintain the protective barrier longer.

Epoxy grout is the exception to regular sealing requirements. This premium option, commonly used in high-end renovations, is naturally stain and water-resistant and typically doesn't require sealing. However, it costs significantly more and requires professional installation due to its quick setting time and specialized application techniques.

Signs your grout needs resealing include water stains, discoloration, or water absorption when you drop water on the grout lines. Regular sealing prevents costly water damage behind tiles and extends the life of your bathroom renovation. For best results, clean grout thoroughly before applying new sealer and ensure the bathroom is well-ventilated during application.

For professional grout sealing or bathroom tile work, Ottawa Bathrooms can connect you with experienced contractors who understand proper waterproofing techniques essential in our climate.

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Ottawa Bathrooms connects you with vetted, licensed renovation contractors from the Ottawa Construction Network:

• Justyn Rook Contracting ✓
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