Why Seal Concrete?
Sealing concrete provides several important benefits:
- Prevents water damage – Concrete is porous and sealing helps prevent water from penetrating into the concrete and causing cracks, pitting, and spalling damage from freeze-thaw cycles.
- Reduces salt damage – Salt used for deicing can damage and deteriorate concrete over time. A sealer helps protect the surface.
- Prevents stains – Spilled liquids like oil, grease, and food can be absorbed into concrete and leave unsightly stains. A sealer makes the concrete more stain resistant.
- Enhances appearance – Sealers enhance the color of concrete and provide a protective coating that keeps it looking cleaner and newer.
- Extends life – By protecting concrete from weathering, staining, and other damage, a sealer extends the life expectancy of driveways and patios.
When to Seal Concrete
The ideal time to apply a concrete sealer depends on the age and condition of the concrete:
- New concrete – Wait a minimum of 30-90 days for new concrete to fully cure before applying a sealer. This allows moisture to escape properly.
- Existing concrete – Seal established concrete every 1-3 years to maintain protection. Look for signs of fading color or damage to determine if it’s time to reseal.
- Damaged concrete – Seal compromised surfaces as soon as possible to prevent further damage. Cracks, stains, and spalling call for prompt sealing.
Sealing is best done in moderate temperatures above 55°F. Avoid sealing during excessively hot, cold, or humid conditions which can impact sealer performance.
Choosing a Concrete Sealer
There are several major types of sealers for concrete:
- Acrylic sealers – Offer minimal protection but enhance appearance well. Require frequent reapplication.
- Polyurethane sealers – Provide good protection against water and stains. Offer durable coating.
- Epoxy sealers – Heavy-duty coating that resists automotive fluids and salt. Highly durable.
- Penetrating sealers – Absorb into concrete for long-lasting protection. Allow vapor transmission.
Consider acrylics for decorative concrete with mild conditions. Use polyurethane or epoxy for driveways and commercial applications. Penetrating sealers work for a wide range of residential uses.
How to Seal Concrete
Sealing concrete properly involves following key preparation and application guidelines:
- Clean the surface thoroughly to remove dirt, oils, debris that can prevent adhesion.
- Repair cracks, chips, spalling before sealing for best results.
- Read manufacturer instructions for application rate and drying time.
- Apply sealer with a sprayer, brush, or roller in thin, even coats.
- Allow sealer to dry completely between coats if applying multiple layers.
- Avoid walking or driving on sealed surfaces for 24-48 hours.
- Properly dispose of any leftover sealer rather than pouring down drains.
Be patient after sealing and avoid heavy use until the sealer has time to fully cure. This helps ensure maximum durability.
Sealing Concrete Yourself vs Hiring a Pro
You can certainly seal concrete yourself to save money, but hiring professionals has advantages:
DIY Sealing
- More budget-friendly option
- Allows you to seal on your schedule
- Satisfaction of doing it yourself
Professional Sealing
- Experts properly assess conditions and select best sealer
- Professionals have right equipment for efficient application
- Experienced applicators provide quality, long-lasting results
- Warranties often provided for professional sealing services
For large or heavily trafficked areas like commercial spaces, professional sealing is likely the best option. For residential projects, DIY sealing can work well if done properly.
Key Takeaways on Sealing Concrete
- Annual sealing protects concrete and prevents costly damage
- Sealers enhance appearance, prevent stains, and extend concrete life
- Penetrating and high-solids sealers offer the most durable protection
- Proper prep work and application techniques ensure best results
- Professionals can provide expert sealing for important projects
Sealing concrete driveways and patios at the right time is a sound investment. Understanding what sealer to use and how to apply it properly helps ensure your concrete surfaces stay looking like new for years to come. With this knowledge, you can keep your concrete surfaces in tip-top shape.
Frequently Asked Questions
What to Know About Sealing Concrete Driveways and Patios?
Sealing concrete driveways and patios provides important protection against damage from water, salt, and stains. It also enhances the appearance and can extend the life of concrete surfaces. Sealers should be applied every 1-3 years to maintain performance. Professional installation often provides the best results.
When is the Best Time to Seal Concrete?
Ideally, seal established concrete every 1-3 years. Allow new concrete to cure for 30-90 days before sealing. Moderate temperatures above 55°F provide good sealing conditions. Avoid applying sealers in very hot, cold, or humid weather.
What is the Best Concrete Sealer to Use?
Penetrating silicone or acrylic sealers provide the most durable water repellent protection for driveways and patios. Polyurethane and epoxy sealers also work well for high-traffic areas. Acrylic sealers offer decorative enhancements.
Should I Hire a Professional or Do It Myself?
You can save money by sealing concrete yourself but professionals have the proper equipment, expertise, and experience to ensure optimal results. For decorative or residential projects, DIY sealing can suffice if done properly.
How Long Does a Concrete Sealer Last?
On average, concrete sealers last 1-3 years for driveways and patios. Harsher weather and traffic can shorten sealer lifespan. Reapply as needed when you notice fading, discoloration, or damage. Proper prep and application lead to maximum sealer durability.
Conclusion
Regularly sealing concrete surfaces is one of the best ways to protect your investment and keep driveways, patios, and other areas looking their best. Be sure to use the right sealer for your needs and properly prepare and apply it. With the right knowledge, sealing concrete is a relatively easy process that yields lasting benefits. Protect your concrete surfaces today with professional sealing services or a quality do-it-yourself project.