Sealing Blacktop Driveways
For sealing blacktop driveways, you will find both oil-based (solvent-based) and water-based asphalt emulsion products on the market
A true "oil-based" sealer, also called Gilsonite sealer, is formulated to penetrate and rejuvenate old, dried-out asphalt surfaces by restoring flexibility. In comparison, water-based asphalt emulsion sealers create a protective layer on top of the surface.
Oil-based (Gilsonite) asphalt sealer
Oil-based sealers are petroleum-based, solvent sealers that penetrate deep into the asphalt to replenish lost oils, which can make them a good option for older, faded driveways.
Product
- For Driveways or Parking Lots: Available from Asphalt Sealcoating Direct, this solvent-based sealer penetrates the surface to restore worn asphalt.
Benefits
- Rejuvenates dry pavement: By soaking into the surface, it restores oils that have oxidized and aged over time.
- Long-lasting flexibility: The deep penetration helps soften brittle asphalt and restore flexibility to the pavement.
- Resilient in colder climates: Oil-based sealers create a strong, flexible barrier that can better withstand the constant contraction and expansion of asphalt in regions with freeze-thaw cycles.
- Glossy finish: These sealers leave a rich, glossy black finish that enhances the curb appeal of your property.
Water-based asphalt emulsion sealers
The most common type of consumer driveway sealer is water-based asphalt emulsion. These products consist of asphalt blended with water and emulsifiers, making them an eco-friendlier alternative to coal-tar-based products.
Oil-based vs. Water-based sealers
The right choice of sealer depends on your priorities regarding durability, appearance, and ease of application.
| Feature | Oil-Based (Gilsonite) Sealer | Water-Based (Emulsion) Sealer |
|---|---|---|
| Formula | Solvent/petroleum-based, penetrates into asphalt. | Water-based emulsion, coats the surface. |
| Best for | For new asphalt deep penetration sealer to protect the stones of the asphalt put the glue back in or old driveways that's never been sealed before need of rejuvenation. | for old driveways or routine sealing for protective topcoat. |
| Durability | Creates a strong, flexible, long-lasting barrier. Resilient in extreme weather. | Good protection, but may need more frequent reapplication, especially in high-traffic areas. |
| Finish | Rich, glossy black finish. | Often a matte finish. |
| Ease of Application | Deeper penetration requires more precise application to avoid unevenness. | Easier and faster application, with many no-stir formulas available. |
