Bluestone is a durable, dense stone that benefits from a careful sealing strategy. The right sealer protects against oil and water stains, minimizes weathering, and preserves the stone’s natural look while allowing vapor to escape. This guide highlights five sealers that work well with Bluestone, Basalt, and other natural stones, explaining how each product performs, what finish it delivers, and how to choose the best option for outdoor patios, driveways, or indoor stone surfaces. You’ll find a quick summary table below to compare key details at a glance.
| Product | Brand | Size / Form | Top Benefit |
|---|---|---|---|
| Rockstar Bluestone Sealer | Rockstar Sealing | 1 Liter | Oil and water repellency; UV stable |
| Armor WL550 Matte Wet Look | Foundation Armor | 5 Gallon | Deep penetration; long-lasting matte wet look |
| Armor WL550 Matte Wet Look | Foundation Armor | 1 Gallon | Same penetrating protection in a smaller package |
| Rain Guard Stone Sealer Concentrate | Rain Guard Water Sealers | Concentrate (makes 1 gallon) | Clear, invisible finish; long-lasting protection |
| Get Serious Paver Sealer | Black Diamond Stoneworks | 4 Ounces | All-in-one paver protection with sand lock |
Rockstar Bluestone Sealer
Rockstar Bluestone Sealer is designed specifically for Bluestone and Basalt. The formula provides oil and water repellency and stain resistance while remaining UV stable, helping reduce surface aging from sun exposure. It does not change the stone’s natural appearance and it does not inhibit water-vapor permeability, preserving breathability essential for outdoor stone and indoor installations. The product is promoted as fast-curing, which can shorten downtime between sealing and use. Applied as a penetrating sealer, it safeguards Bluestone patios, walkways, and interior stone features without forming a visible film on the surface.
Best used on dense Bluestone surfaces exposed to weather or household spills, the RockStar sealer aims to offer durable protection with minimal maintenance. Since it penetrates rather than coats, it tends to resist darkening the stone while still imparting a protective barrier. For larger outdoor areas, consider the high-coverage potential of the 1 liter container alongside compatible, larger-volume options if you’re sealing extensive Bluestone installations. Always follow surface prep steps—clean, dry, and free of efflorescence—for consistent results.
Armor WL550 Matte Wet Look 5 Gallon
Armor WL550 is a deep-penetrating, solvent-based matte wet look sealer designed to protect concrete, brick, flagstone, Bluestone, and other masonry surfaces. Its penetrating chemistry creates a water-repellent barrier beneath the surface, which helps reduce the absorption of water and other liquids by up to a substantial margin. The finish remains matte without a surface film, so the natural texture and color depth of Bluestone are preserved while still gaining protection. This product is noted for long-lasting results, with protection potentially extending across several years, depending on traffic and environment.
Key advantages include its breathable formulation, which minimizes trapped moisture that could cause cracking, and its lower VOC profile for a solvent-based system. It’s suitable for exterior patios and interior stone features alike, provided ventilation is adequate during application. A single coat application simplifies the process, making it a practical choice for large Bluestone installations such as driveways or expansive flagstone paths that require a durable, low-gloss finish with strong water repellency.
Armor WL550 Matte Wet Look 1 Gallon
This 1-gallon version of Armor WL550 brings the same deep-penetrating, matte wet look protection to small projects or test patches. Like the 5-gallon variant, it penetrates below the surface to form a durable, water-repellent barrier that helps reduce liquid absorption and freeze-thaw damage. The appearance remains natural with no heavy surface film, so Bluestone retains its texture and color depth while gaining protection against moisture-related deterioration. It is well-suited for boutique installations, small patios, steps, or indoor stone surfaces that require a lasting matte finish.
Because WL550 seals below the surface, you’ll often notice a subtle darkening upon application as the sealed stone drinks in the resin. After curing, the surface should look and feel as it did pre-seal, minus the rapid absorption of moisture. Adequate surface drying time and proper ventilation are important with solvent-based products, especially in enclosed spaces or areas with limited air flow.
Rain Guard Stone Sealer Concentrate
Rain Guard Stone Sealer is a premium stone sealer designed for indoor and outdoor stone surfaces, including Bluestone. The product is a concentrate, which yields a blend that can cover substantial areas when prepared, typically up to 250 square feet per batch depending on dilution and surface texture. It dries to an invisible, stain-resistant finish that does not yellow or alter surface texture. The Micro-Lok technology helps create a long-lasting hydrophobic barrier, protecting against weathering, salt, dirt, and UV exposure without forming a visible film.
Because the finish is designed to remain clear, it’s especially suitable for light-colored Bluestone or high-traffic areas where a natural look is desired. It’s appropriate for walkways, chimneys, patios, and stone walls. For best results, follow recommended mixing ratios and apply evenly with a sprayer, roller, or brush, allowing sufficient cure time between coats and after final application to maximize penetration and durability.
Get Serious Paver Sealer
Get Serious Paver Sealer is a versatile, water-based sealant designed for cement, brick, natural stone, slate, Bluestone, patios, and driveways. It provides a gloss finish that helps lock in sand joints in paver installations, reducing the risk of sand migration into adjacent areas. The product emphasizes durability and ease of maintenance, making it a practical choice for outdoor Bluestone surfaces where joint stabilization is a concern. Although offered in a small 4-ounce size, it serves as a testing option for color, sheen, and performance before applying to larger Bluestone areas.
For Bluestone projects that include paver beds or jointed installations, Get Serious can deliver a protective layer that helps maintain a clean, finished look with reduced weed growth and surface wear. As with any solvent- or water-based sealant, ensure proper ventilation during application and follow manufacturer instructions for curing times and reapplication intervals to preserve the seal’s effectiveness over time.
Buying Guide
Key factors when choosing a Bluestone sealer
Consider whether you need a penetrating sealer or a surface film. Penetrating sealers, like Armor WL550 and Rockstar, preserve the stone’s natural texture and color while imparting water repellency. Film-forming sealers create a surface layer that can alter sheen or color slightly but may offer enhanced protection in high-traffic areas. For Bluestone, a penetrating, low-visibility sealant is often preferred to maintain natural appearance and breathability.
Penetrating versus film-forming options
Penetrating sealers work below the stone’s surface, forming a hydrophobic barrier without a shiny, surface film. They are generally better for outdoor Bluestone exposed to weather and temperature swings. Film-forming options can enhance color or gloss but may require maintenance to prevent peeling or hazing in some environments. Review surface texture, porosity, and desired finish when selecting a sealer type.
Indoor versus outdoor use and weather resistance
Outdoor Bluestone faces moisture, freeze-thaw cycles, UV exposure, and dirt. Sealers with strong water repellency and UV stability perform best in exterior settings. Indoor applications may favor odor, VOC, and low-emission formulations. When sealing outdoor Bluestone, choose products with proven weather resistance and long-term protection for areas like patios and walkways.
Appearance: color change and sheen
Sealants can darken or slightly alter color while sealing. Penetrating sealers often darken less than surface coatings, producing a subtle, natural look. Matte wet look sealers add a soft sheen without a noticeable film. If preserving the stone’s natural color is a priority, test a small area first or opt for a clear, penetrating sealer designed to minimize visible change.
Maintenance and reapplication
Durability varies by product, environment, and foot traffic. Many penetrating sealers last several years, with some estimates around 5–7 years in outdoor conditions. Reapplication may be needed after signs of wear, staining, or increased absorption. For high-traffic Bluestone features, plan for periodic evaluation and longer-term maintenance using the same or compatible products to maintain uniform protection.
Application tips and safety considerations
Prepare the surface by cleaning, allowing it to dry completely, and removing any mold, weeds, or efflorescence. Follow manufacturer directions for coverage rates and curing times. Work in dry weather with good ventilation, especially for solvent-based products. Wear protective gear as recommended and avoid sealing during extreme temperatures to ensure proper penetration and cure.