Choosing the right grout for your backsplash is one of the most important decisions you’ll make when renovating your kitchen or bathroom. The grout acts as the filler between the tiles, so its color, texture, and durability will greatly impact the overall look and feel of your backsplash. With so many grout options on the market, the selection process can be overwhelming. This comprehensive guide will walk you through the key factors to consider when selecting grout for your backsplash installation or repair project.
Types of Grout
When it comes to grout, you have several options to choose from. Here are the most common types of grout available:
Cement Grout
This is the most basic and affordable type of grout. It consists of cement, sand, and water mixed into a thick paste. Cement grout is suitable for most indoor and outdoor tiling projects. However, it can be prone to cracking and discoloration over time, so it may not be the best choice for kitchen backsplashes.
Pros:
- Inexpensive
- Works with most types of tile
- Available in wide color range
Cons:
- Not as durable as epoxy or urethane grouts
- Requires sealing to avoid staining
- Can shrink and crack over time
Epoxy Grout
Epoxy grouts contain epoxy resins that create a durable, water-resistant bond when cured. Epoxy grout is resistant to cracks, shrinkage, and chemicals. It offers excellent stain resistance. The downside is that epoxy grouts can be more difficult to work with and are more expensive.
Pros:
- Extremely durable and long-lasting
- Stain resistant
- Resists shrinking and cracking
Cons:
- More difficult to work with than cement grout
- Requires skillful installation
- More expensive than cement grout
Urethane Grout
Urethane grout contains polyurethane resins that make it flexible and waterproof when cured. It won’t shrink or crack over time. Urethane grouts provide good stain resistance and a nice even color. However, they can be tricky to install and come at a higher cost.
Pros:
- Flexible – won’t shrink or crack
- Stain resistant
- Makes a waterproof seal
Cons:
- Difficult installation
- Expensive compared to other grout types
- Requires sealing for maximum stain resistance
Grout Characteristics to Consider
When selecting grout, keep the following characteristics in mind:
Grout Color
Grout comes in a huge range of colors from basic white and gray to dynamic blues, greens, browns, and more. The grout color you choose can complement, match, or contrast your tile to create different aesthetic effects. For kitchen backsplashes, popular choices are white, light gray, and soft beige hues that highlight the beauty of natural stone or ceramic tiles. Darker grout colors can provide a more dramatic or modern look. Take into account your overall kitchen or bathroom color scheme when selecting a grout color.
Grout Texture
Standard grouts have a smooth finish, but you can also find grouts with a more coarse or porous texture. The texture of the grout impacts the look and feel of the finished backsplash. Smooth grouts provide a sleek, uniform appearance. Textured grouts add visual interest and traction. Consider whether you want your grout lines to stand out more or blend in seamlessly when choosing texture.
Grout Stain Resistance
For backsplashes in kitchens and bathrooms, staining from water, oils, foods, and household chemicals is a major concern. Make sure to select a grout that offers maximum stain resistance and easy cleanability for your application. Epoxy and urethane grouts provide the best stain resistance. Cement grout will need to be sealed regularly to avoid staining.
Grout Durability
The long-term durability of grout is essential in backsplashes that see heavy daily use. Epoxy and urethane grouts are the toughest, most durable grout options. Cement grout is prone to cracking and deterioration over time. Make sure the grout you choose is suitable for your tiling material and can withstand the traffic, moisture, and cleaning products it will be exposed to.
How to Choose Grout Width
The spacing between the tiles, known as the grout joint or grout width, ranges from 1/16 inch to 5/8 inch or more. The grout joint size you use will determine the look and feel of your backsplash. Here are some guidelines on choosing grout width:
- Small Joints (1/16 to 1/8 inch): Best for minimalist contemporary designs or mosaic tiles. Enhance the smooth, uninterrupted look of tile surface. Can be difficult to work with and require more precision. Higher risk of cracking and grout loss over time.
- Medium Joints (1/8 to 3/8 inch): The most common and versatile grout line size. Allow for inevitable uneven tile edges. Easier to work with than narrow joints. Provides just enough grout to bind tiles firmly.
- Wide Joints (3/8 to 5/8 inch): Creates a more rustic, handmade appearance. Works well with natural stone tiles and textured surfaces like travertine, slate, or textured ceramic. Requires more grout material. Can collect more dirt and grime than smaller joints.
Consider the tile size, texture, and desired aesthetic when deciding on grout width. Wider grout lines are more suitable for uneven hand-cut tiles, while uniform manufactured tiles look best with thinner joints.
Grout Selection Guidelines Based on Tile Type
Follow these general guidelines on choosing the best grout for different tile materials:
Ceramic and Porcelain Tile Grout
Ceramic and porcelain tiles are relatively easy to grout. For kitchen backsplashes, cement or epoxy grout usually works well. Avoid dark grout colors which can show dirt more visibly. Make sure cement grout is sealed properly.
Natural Stone Tile Grout
Use cement or epoxy grout for granite, marble, travertine, limestone, and slate backsplashes. Check stone porosity and follow manufacturer guidelines. Certain stones may react poorly with epoxy. Make sure to seal grout lines to prevent staining.
Glass Tile Grout
Use a white or light colored grout to showcase the brilliance of glass tiles. Epoxy or urethane grout is highly recommended for their durability and stain resistance. Avoid abrasive cleaners that can scratch the tile surface.
Mosaic Tile Grout
Choose an epoxy or urethane grout for mosaic sheets to get a strong durable bond within the small grout joints. Take extra care to fully seal the grout to prevent uneven coloring or staining of the mosaic tiles over time.
Follow manufacturer instructions for specialty tiles like metal, resin, or recycled glass to ensure grout compatibility. An experienced tile installer can help select the ideal grout.
Grout Considerations by Application Area
Tailor your grout selection to the specific demands of the application area:
Kitchen Backsplash Grout
Prioritize maximum stain resistance and easy cleaning. Epoxy or urethane grout is ideal for resisting cooking oils, spices, and food stains. Avoid porous grouts that absorb stains readily. White or light grout shows less grime buildup over time.
Shower and Tub Surround Grout
Use waterproof urethane or epoxy grout able to withstand constant moisture and cleaning products. Cement grout will deteriorate quickly in wet areas. Make sure to re-seal grout annually to maintain water resistance and prevent mildew growth.
Countertop Grout
Epoxy grout stands up best to heavy use and abuse from spills, stains and impacts. Make sure to use grout meant for countertop installation for proper adhesion and longevity. Test stain resistance before sealing.
Floor Tile Grout
Select a durable grout like epoxy or urethane for high-traffic floor areas. For cement grout, use a latex fortified mix for added flexibility and resistance to cracking under foot traffic. Consider a wider grout joint of 3/8 – 1/2 inch for easier cleaning between floor tiles.
Outdoor Tile Grout
Use cement grout for outdoor applications. Verify it contains polymers, latex or other additives to improve adhesion and withstand weather elements. A sanded grout with an aggregate material performs best outdoors. Reapply sealant every 1-2 years.
Always check that the grout meets ANSI specifications for its indicated use. An experienced tile installer can help select grout suited for each unique application.
How to Apply and Seal Grout
Installing and sealing grout correctly ensures your backsplash looks beautiful and lasts. Follow these tips:
- Wait the recommended time after tile setting before grouting to allow mortar to fully cure and prevent discoloration. This is often 48-72 hours.
- Apply grout using a rubber grout float or squeegee, pressing firmly into joints to avoid air pockets. Hold float at a 45° angle and use diagonal strokes for smooth consistent coverage.
- Go slowly and grout in small sections so the grout doesn’t dry too quickly before you can remove the excess, usually 10-20 minutes per section.
- Once grout becomes firm, use a damp sponge in a circular motion to smooth joints and remove excess grout from tile surface. Rinse sponge frequently.
- Use as little water as possible for grout cleanup to avoid washing out joints or altering grout color. Avoid scrubbing aggressively.
- Allow grout to cure fully for 72 hours or per manufacturer instructions before sealing or exposing to water.
- Apply a penetrating grout sealer like Aqua Mix Sealer’s Choice Gold to cement and epoxy grout once fully cured. Reapply yearly.
- Avoid steam cleaning, harsh chemicals, or abrasive scrubbing on grout. Use a pH neutral cleaner.
Proper grouting and sealing techniques will keep your backsplash looking pristine for years to come. Consider hiring a professional installer if uncomfortable doing it yourself.
Grout Maintenance Tips
Regular maintenance keeps grout lines clean, sealed, and crack-free:
- Sweep or vacuum backsplash weekly to prevent dirt buildup. Use a soft brush attachment around grout lines.
- Spot clean grout as needed with a toothbrush and mild non-abrasive cleaner. Avoid acidic cleaners.
- Re-apply grout sealer every 1-2 years for maximum stain protection, especially in kitchens.
- Inspect for cracks in grout annually. Re-grout any areas that show signs of damage or deterioration.
- Watch for signs of mildew growth in bathroom grout and treat quickly with Tilex Mold and Mildew Remover. Improve ventilation to prevent recurring mold.
- Re-caulk corner joints if cracks appear between tile and sink/tub. Match caulk color to grout for a seamless appearance.
- Planning a kitchen remodel? Consider grout color refreshing or regrouting instead of a full tile replacement for a budget-friendly update.
Proper sealing and cleaning of grout lines will maintain the beauty and integrity of your backsplash for 10-15 years or longer. Monitor grout closely in wet areas prone to damage.
Grout Troubleshooting Tips
Some common grouting problems and their solutions:
Crumbling, Cracking Grout:
Indicates that cement grout was poorly mixed, cured too fast, or lacks sufficient elasticity for the application. Remove and re-grout problem areas with latex-fortified sanded grout. Ensure proper curing time.
Grout Haze:
A white, chalky film left on tile surface after grouting. Avoid excessive water during cleanup. Use grout haze remover solution after curing. Check that tiles are fully cured before grouting.
Efflorescence:
White powdery deposit on grout surface. Caused by moisture reacting with minerals in cement grout or mortar. Allow grout to fully cure and dry out. Use an efflorescence cleaner. Improve ventilation.
Staining:
Sealant failure or porous grout allowing dyes, oils etc to soak in. Determine if staining is on surface or penetrated into grout. Reseal then attempt removal with hydrogen peroxide or stain removers. May require re-grouting if pervasive.
Grout Coloring or Discoloration:
From not cleaning immediately, uneven drying, or chemicals reacting with minerals in grout. Can possibly be improved with grout color sealer. May require re-grouting for uniform color.
Mildew Growth:
Indicates excessive moisture and lack of ventilation. Scrub with chlorine bleach mixture. Improve air flow and ventilation. Re-apply grout sealer.
Loose, Crumbling Grout:
Sign of a poor bond and incorrect installation. Remove loose grout and re-grout affected areas. Ensure proper spread rate and joint packing to remedy.
Careful grout installation, sealing, and maintenance will help avoid many common grouting problems in backsplash areas. Don’t hesitate to consult a tile professional for specialized grout repairs.
Grout FAQs
What’s the easiest grout to work with?
Premixed smooth cement-based grouts are the most beginner-friendly. Epoxy and urethane grouts require more skill to mix and install correctly.
Should I seal all types of grout?
Sealing is strongly recommended for cement grout to prevent staining. Pre-sealed and epoxy grouts may not need sealing but can benefit from added protection in heavy use areas.
How long does grout take to dry?
Cement grout takes 24-72 hours to cure initially. Epoxy grouts cure in 24 hours. Don’t expose to water or seal grout until fully cured.
Why is my grout cracking/crumbling?
Insufficient curing time, poor installation, underlying movement/shrinkage, or damage from moisture allows cement grout to crack. Epoxy and urethane grout resist cracking.
Do I need to use a sealer on epoxy grout?
Epoxy grouts are inherently stain-resistant and less porous than cement. However, applying a sealer provides added protection for heavy use backsplashes.
How do I get a haze off my tiles after grouting?
Grout haze remover solutions or a 50/50 vinegar and water solution can safely remove grout haze once tiles are fully cured. Avoid acidic cleaners on polished stones.
What’s the most stain-proof grout for a kitchen backsplash?
Epoxy grouts provide the best stain resistance. Urethane grouts also resist staining well. Cement grout will need diligent sealing and maintenance.
How soon can I get my backsplash wet after grouting?
Cement grout requires a 72 hour cure time before exposure to moisture. Epoxy and urethane grouts can handle water after 24 hours but benefit from longer curing.
Is it OK to mix grout brands?
It’s not recommended. Different brands may use incompatible ingredients that result in poor bonding or curing. Stick to products from a single manufacturer.
Choosing the Right Grout for Your Project
Selecting the ideal grout involves considering factors like tile material, durability needs, stain resistance, color, budget, and application area. Ultimately, you want a grout that matches the functional and aesthetic vision for your backsplash. Don’t simply default to basic cement grout. Improved epoxy and urethane grouts are designed to provide the best performance in high-demand kitchen and bathroom settings.
Take time to review grout types and their characteristics. Look at grout color options and joint widths to find a style that complements your tiles. Check that your grout meets ANSI standards and manufacturer specifications for its intended use. With the right grout choice and proper installation, your backsplash can stay beautiful and protected for years to come.