How Sealants Enhance Hardwood Floor Refinishing

By Cezar

Hardwood floors can add warmth and beauty to any home. However, without proper care, wood can become dull, scratched, and worn over time. Refinishing floors helps restore their luster and protect the surface. Wood floor sealant provides important benefits that enhance the results of refinishing hardwood floors.

The Role of Sealants in Floor Care

Resistance Against Scratches and Scuffs

Applying a protective wood floor sealant is one of the most important steps when refinishing floors. The coating acts as a barrier on top of the hardwood, protecting it from damage. As people walk across the wood, dirt, and grit on shoes can scratch and scuff the surface. Furniture sliding across the floor also leaves scratches and gouges. Even pet nails can damage surfaces over time. According to studies, unsealed hardwood can show signs of scratching and wear in less than a year of normal use. The finish provides a smooth, uniform layer that resists everyday wear and tear. Wood floor sealants fill in the microscopic pores and grains in the wood, creating an even surface that is more scratch-resistant. High-quality polyurethane wood floor finishes have been found to protect against scratches for 5–10 years on average before needing renewal.

Moisture and Spill Protection

Sealants also form a moisture barrier to prevent water damage to wood floors. Water is one of the biggest threats to hardwood. Industry experts estimate over 20% of hardwood damage claims are related to water exposure. Spilled liquids that are not quickly cleaned up can warp cupboards. Water causes the wood to swell, leading to raised edges. It also promotes mildew and mold growth in damp hardwood, creating unsightly black spots. Excessive moisture dulls the finish and strips away shine. In the kitchen, dining room, and bathrooms, spills occur frequently. A proper sealant shields the wood from moisture penetration. It resists water damage and prevents spills from soaking in. This protection is crucial in any room prone to wetness. The floor sealant creates a barrier between the hardwood and moisture, protecting the integrity of the flooring.

Making Wood Look Its Best

In addition to protective properties, sealants help enhance the natural look of hardwood. The sealant soaks into the grain and brings out the depth of color in the wood. It provides a clear, glossy layer that highlights the natural pattern and beauty of the surface. The smooth application accentuates the variations and visual appeal of the surface. The treated hardwood has a lustrous, transparent shine. The clarity of the finish allows the wood’s color and grain to take center stage. The proper application transforms a floor from drab and worn to stunning. It makes the wood “pop” and completely changes the look of a home’s interior.

Choosing the Right Sealant

Polyurethane Sealants: The Durable Protector

Polyurethane is the most popular and effective sealant for protecting hardwood floors. The main benefit of polyurethane is its superior durability. It forms a strong plastic-like coating over the wood that is highly resistant to scratches, gouges, and moisture damage. Polyurethane offers many advantages:

  • Recommended by over 70% of flooring professionals for refinishing
  • Bonds tightly to wood fibers for longevity
  • Does not chip or peel easily
  • Withstands years of foot traffic without wear
  • Provides complete protection for high-traffic areas
  • Resists scratching 2–3 times longer than other sealants in tests
  • Polyurethane sealants also come in various sheens ranging from satin to semi-gloss to high gloss. This allows homeowners to customize the look from subtle to shiny. Those wanting maximum protection and shine will benefit the most from polyurethane sealant.

Polyurethane Wood Floor Sealant

Wax Sealants: The Traditional Choice

Wax-based sealants provide a classic, natural look to wood floors. Wax has been used for centuries to protect surfaces. Wax offers some benefits:

  • Seeps gently into the grain to provide soft luster
  • Allows subtle wood textures and markings to show through
  • Provides a mellow, muted sheen

However, wax has some drawbacks:

  • Does not offer protection from moisture and wear
  • Requires reapplication every 1–2 years for continued performance
  • Best for low-traffic areas not exposed to significant moisture
  • Works well for furniture but not high-traffic floors
  • Wax is best for homeowners wanting a traditional, natural look without robust protection.

Acrylic Sealants: The Eco-Friendly Option

For those wanting a “green” floor finish, acrylic sealants are a good choice. Acrylic offers advantages like:

  • Derived from non-toxic acrylic polymer resins
  • Decent moisture and wear protection
  • Zero VOCs for good indoor air quality
  • Easy soap and water cleanup
  • Quick drying time for multiple coats in one day

However, acrylic has some limitations:

  • Less durable and scratch-resistant than polyurethane
  • Protection sufficient only for low to moderate-traffic areas
  • Lacks the longevity of polyurethane sealants
  • Overall, acrylics are a good environmentally-friendly option when heavy-duty protection is not required.

Caring for Your Sealed Hardwood Floors

Once sealed, hardwood is easier than ever to maintain. Simple steps like sweeping and mopping using the proper wood floor cleaners will keep the surface looking clean and new. Doormats placed inside and outside entranceways prevent dirt, sand, and grit from being tracked onto floors, which can quickly dull finishes. Area rugs in high-traffic areas add a second layer of protection. Furniture leg pads prevent scratches from chairs and tables being slid across floors. Keeping pet nails trimmed also reduces scratching. Staying on top of spills right when they occur prevents moisture damage. Avoiding steam mops or excess water preserves the floor’s shine and sealant protection. Reapplying sealant every few years will keep high-traffic areas protected. With proper maintenance habits, sealed hardwood will stay beautiful for a lifetime.

Economic Benefits of Proper Floor Sealing

Investing in high-quality sealing provides economic benefits for many years after the initial cost. Well-maintained wood floors that keep their shine and protection over decades will increase a home’s value significantly. Buyers recognize the value of pristine hardwood, meaning larger profits when selling the home. The upfront cost of finishes seems small when amortized over a lifetime of use. Proper application also minimizes expenses from wood floor repairs, replacements, and refinishing. It prevents water damage that leads to warping, swelling, and mold. The protective coating protects the structural integrity of the flooring. For homeowners, finishing hardwood is a value-adding improvement that pays dividends for the entire time they own the home.

DIY vs. Professional Application

Applying sealant to wood floors can either be done as a DIY home project or hired out to professional hardwood floor refinishing contractors. DIY refinishing is more budget-friendly but requires the homeowner to rent equipment, purchase products, and learn techniques for applying the sealant properly. This takes considerable time and effort. Mistakes made during the sealing process can lead to uneven finishes, improper coating, brush marks, and other flaws. Professionals have specialized equipment like drum sanders to prep and level the floors. They have experience determining how many coats to apply for maximum protection. Professionals use high-quality commercial products and application techniques refined over many years of experience. This leads to superior results. For homeowners with extensive hardwood flooring throughout their house, it often makes sense to hire professionals and avoid the hassle and uncertainty of DIY refinishing. The complexity of your hardwood and desired finish should dictate whether to DIY or hire a trusted flooring contractor.
Refinish or Reseal Your Hardwood Floors

Innovations and Future Trends in Floor Sealants

Technology keeps improving the formulas, durability, and ease of use of floor sealants. Water-based polyurethanes have been developed that offer easier application and faster drying compared to traditional oil-based versions. Combination products are now available that combine floor cleaners and sealants for efficient maintenance. Environmentally friendly sealants derived from renewable soy, cork, and other plant sources provide green options without sacrificing quality. Enhanced chemical resistance will lead to finishes that withstand a wider range of spills and accidents. Expect sealants to become even more protective and cost-effective as technology keeps advancing.


Applying a protective sealant allows hardwood floors to look and perform their best. Wood floor sealants prevent scratches, gouges, and moisture damage. They enhance the natural beauty of wood. With proper sealing techniques, regular maintenance, and reapplication when needed, hardwood will stay gorgeous for a lifetime. Sealants transform floors into a cherished asset that adds value and elegance to a home.