Does terrazzo need to be sealed?

Are you considering terrazzo flooring for your home? It's a beautiful and durable option, but you might be wondering if it really needs to be sealed. The short answer is yes! Sealing terrazzo floors is essential to maintain their beauty and protect them from stains and damage.

In this guide, we’re going to explain everything you need to know about sealing terrazzo. We’re going to cover:

• Why you need to seal terrazzo
• Types of sealers to use
• How to seal terrazzo
• Maintenance and resealing
• Costs
• Common myths and the actual facts
• FAQs

Policrete is Melbourne’s leading concrete specialist, so we know a thing or two about terrazzo. If you’d like to learn more about it, book a consultation with our terrazzo flooring experts.

Why do you need to seal terrazzo floors?

Sealing terrazzo floors is crucial to protect against stains, etching, and damage from spills and heavy traffic. By sealing terrazzo, you enhance its durability and appearance, ensuring maximum stain resistance. A well-sealed terrazzo floor is easier to clean and maintain, preserving its aesthetic appeal for years to come.

The benefits of sealing terrazzo

Sealing terrazzo floors offers several benefits, making it a worthwhile investment for any homeowner:

• Enhanced longevity: Sealed terrazzo is more resistant to wear and damage, extending the life of your floor. This is especially important in high-traffic areas or homes with children and pets.
• Easier cleaning and maintenance: A sealed surface is easier to clean and maintain, saving you time and effort. Spills can be wiped up quickly without worrying about staining or damage.
• Preserving aesthetic appeal: Sealing helps maintain the terrazzo's beautiful appearance, ensuring it looks stunning for years. Whether you prefer a natural matte finish or a glossy shine, sealing will keep your floors looking their best.
• Improved hygiene: Sealed terrazzo floors are less likely to harbour bacteria and allergens, making them a healthier choice for your home. This is particularly beneficial for households with allergies or respiratory issues

Types of terrazzo floor sealers

When it comes to sealing terrazzo, choosing the right sealer is key to ensuring the best protection and finish. There are two main types of terrazzo sealers: penetrating sealers and topical sealers.

• Penetrating sealers: These sealers soak into the terrazzo, providing protection from within. They create a barrier below the surface that repels water and oils, making the floor resistant to stains without altering its appearance. Penetrating sealers are ideal for those who want to maintain the natural look of terrazzo while offering strong protection. They are especially useful in high-traffic areas or places where spills are common.
• Topical sealers: These sealers form a protective layer on the surface of the terrazzo. They offer excellent protection against spills, wear, and tear, but may require more maintenance than penetrating sealers. Topical sealers can enhance the colour and shine of the terrazzo, giving it a glossy or satin finish. They are a good choice for areas where aesthetic appeal is a priority and where regular reapplication is manageable.
• Choosing the right sealer: The choice between penetrating and topical sealers depends on your specific needs. If you prioritise ease of maintenance and a natural look, a penetrating sealer is the way to go. If you want to enhance the colour and add a glossy finish, a topical sealer would be more appropriate. In some cases, a combination of both types can be used to provide comprehensive protection and aesthetics.

How to seal terrazzo

Sealing terrazzo floors and tiles involves several important steps to ensure a thorough and even application. Here’s a basic overview of the process so you understand what your concrete specialist will need to do.

1. Clean the surface: Start by removing surface dirt and debris with a neutral cleaner. This step is crucial as it ensures that the sealer adheres properly. Use a mild, pH-neutral cleaner to avoid damaging the terrazzo. It's also essential to allow the floor to dry completely before applying the sealer.
2. Prepare the floor: If there is an existing sealer, it may need to be removed before applying a new coat. Use a sealer remover or stripper recommended for terrazzo to ensure all residues are eliminated. This preparation step helps the new sealer bond effectively with the terrazzo surface.
3. Apply the sealer: Use a high-quality terrazzo sealer, either penetrating or topical, depending on your preference. Apply the sealer evenly across the surface using a lambswool applicator or a sprayer for larger areas. Make sure to cover the entire floor and seal surrounding grout surfaces to prevent staining. Apply multiple thin coats rather than one thick coat for better penetration and coverage.
4. Allow to dry: Let the sealer dry completely, following the manufacturer's instructions for drying time. This usually takes a few hours, but it's best to avoid heavy traffic on the floor for at least 24 hours to ensure the sealer sets properly.

Terrazzo maintenance and resealing

Regular maintenance is essential to keep your sealed terrazzo floors in top condition. Here are some tips for maintaining and resealing your terrazzo floors:

• Terrazzo cleaning: Use a neutral cleaner to clean the floors regularly. Avoid harsh chemicals and abrasive scrubbers, which can damage the sealer and the terrazzo itself. Sweep or vacuum frequently to remove dirt and grit that can scratch the surface.
• Resealing: Depending on the type of sealer used and the traffic the floor receives, you may need to reseal the terrazzo every 1-3 years. Penetrating sealers typically last longer than topical sealers, but both types will require reapplication over time. Signs that your terrazzo floor needs resealing include a dull appearance, increased staining, and water not beading on the surface.
• Spot treatment: For areas with heavy wear or stains, you can perform spot treatments between full resealings. Clean the area thoroughly, apply a small amount of sealer, and allow it to dry completely.

If you need to seal, reseal and maintain your flooring, take a few minutes to learn about our  concrete grind and seal service.

The cost of sealing terrazzo

The cost of sealing terrazzo floors can vary based on several factors, including the type of sealer used, the size of the area, and whether you hire professionals or do it yourself. Here’s a general idea:

• Initial sealing: Costs can include cleaning, preparation, and application of the sealer. DIY projects are typically less expensive but require time and effort. Professional services are more convenient and ensure a thorough job, but come at a higher cost.
• Resealing: Resealing generally costs less than the initial sealing since the preparation work is less intensive. It’s important to budget for regular resealing to maintain the floor’s appearance and protection.
• Factors influencing cost: The type of sealer (penetrating or topical), the condition of the existing sealer, and the complexity of the floor design can all affect the overall cost. Consulting with a professional like Policrete can provide a more accurate estimate based on your specific needs.

If you need detailed pricing or have specific questions about the costs involved, book your consultation for a tailored quote

Common myths about sealing terrazzo

There are several misconceptions about sealing terrazzo that can lead to confusion and improper maintenance. Here are some common myths and the facts to set them straight:

Myth: Terrazzo doesn't need to be sealed because it's durable.
Fact: While durable, terrazzo still benefits from sealing to protect against stains, spills, and wear. Sealing enhances the natural strength of terrazzo and adds an extra layer of protection.

Myth: Any sealer can be used on terrazzo.
Fact: To ensure proper protection and performance, it's essential to use sealers designed explicitly for terrazzo. Generic sealers may provide less protection and can sometimes damage the terrazzo.

Myth: Sealing terrazzo makes it slippery.
Fact: Properly applied sealers can enhance the slip resistance of terrazzo floors. Using the correct type of sealer and following application guidelines will ensure a safe and non-slippery surface.

Myth: Sealing terrazzo is a one-time job.
Fact: Regular resealing is necessary to maintain the sealer's protective benefits. Over time, the sealer wears off due to foot traffic and cleaning, so periodic reapplication is required.

Frequently Asked Questions

How often do terrazzo floors need to be sealed?

Terrazzo floors typically need to be sealed every 1-3 years, depending on the type of sealer used and the amount of traffic the floor receives. Regular sealing ensures maximum stain resistance and maintains the floor's appearance.

What not to use on a terrazzo floor?

Avoid using harsh chemicals, acidic cleaners, and abrasive scrubbers on terrazzo floors, as these can damage the sealer and the terrazzo itself. Stick to neutral cleaners designed for terrazzo maintenance.

How long does the sealing process take?

The sealing process can take a few hours to a day, depending on the size of the area and the drying time required for the sealer. Ensure the floor is thoroughly dry before allowing foot traffic.

Can I seal terrazzo floors myself?

Yes, you can seal terrazzo floors yourself with the right tools and materials. However, for the best results and to ensure even application, it is often recommended to hire professionals like Policrete

What are the signs that my terrazzo floor needs sealing?

Signs that your terrazzo floor needs sealing include a dull appearance, increased staining, and water not beading on the surface. Regular inspection can help determine when it's time to reseal.