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Miracle Sealants 511 Spray-On Grout Sealer, 15 oz
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At a Glance
Quick Decision Guide
Container Size
15 Oz. Aerosol
Coverage
Up to 250 Linear Feet
Finish
Invisible Penetrating Sealer
Application Area
Interior & Exterior
Water Vapor Transmission
Yes
Stain Protection
Water, Oil & Stain Resistant
Weather Resistance
UV, Acid Rain & Freeze/Thaw Resistant
Suitable Grout
Sanded & Unsanded Cementitious Grout
Why Choose This Product
Key Benefits
Fast Project Turnaround
Can be applied as soon as two hours after grouting when the grout's cure requirements are met
Directional Aerosol
Targets grout joints for efficient sealing on tile and stone installations
Invisible Penetrating Barrier
Resists water, oil and stains without forming a topical coating or changing the grout's natural look
New and Existing Grout
Protects clean, dry sanded or unsanded cementitious grout in fresh and established installations
Interior and Exterior Defense
Helps protect grout from salt intrusion, weather, acid rain and freeze/thaw conditions
Tile and Stone Compatibility
Will not harm listed ceramic, porcelain, glass and natural stone surfaces when used as directed
Product Information
Product Details
Specifications
Brand
Miracle Sealants®
Part Number
GRTSLRAEROCS
UPC
753927513640
Product Type
Penetrating Grout Sealer
Container Size
15 Oz. Aerosol
Sealer Type
Solvent-Based Penetrating Sealer
Application Method
Directional Aerosol Spray
Appearance
Invisible
Surface Finish
Natural Look
Application Time
As Little as 2 Hours After Grouting
Suitable Grout
Sanded & Unsanded Cementitious Grout
Suitable Surfaces
Cementitious Grout Joints
Safe Around
Ceramic, Porcelain, Glazed, Quarry & Glass Tile, Marble, Granite, Limestone, Travertine, Slate & Natural Stone
Protection
Water, Oil, Stains, Alkalis & Salt Ion Intrusion
Weather Resistance
UV Transparent, Acid Rain & Freeze/Thaw Resistant
Water Vapor Transmission
Allows Moisture Vapor to Escape
Interior/Exterior
Yes
CFC Content
None
Container
Recyclable
About This Product
Fast Penetrating Grout Sealer for New or Existing Joints
Miracle Sealants® 511 Spray-On Grout Sealer is a ready-to-use, solvent-based penetrating sealer made for sanded and unsanded cementitious grout in tile and stone installations. Its directional aerosol targets grout joints, helping homeowners and professionals protect new work or refresh existing grout without coating the surrounding finish. When grout cure requirements are met, it can be applied as soon as two hours after grouting to help keep projects moving.
Invisible Resistance to Water, Oil and Stains
The formula penetrates porous grout and creates an invisible barrier that resists water and oil absorption, stains, alkalis, and salt intrusion. Because the protection sits within the grout instead of forming a topical coating, moisture vapor can still escape and the grout retains its natural appearance. This provides discreet protection in areas exposed to splashes, spills, and daily use.
Interior and Exterior Protection for Tile and Stone Installations
Designed for indoor and outdoor grout installations, 511 Spray-On Grout Sealer is suitable for showers, kitchens, backsplashes, countertops, floors, patios, pool decks, walkways, and commercial spaces. It is UV transparent, will not yellow, and helps defend grout against weather, acid rain, and freeze/thaw conditions. When used as directed, it will not harm listed ceramic, porcelain, glass, quarry, glazed tile, or natural stone surfaces.
Product Resources
Documentation & Downloads
Common Questions
Frequently Asked Questions
Is 511 Spray-On Grout Sealer a tile sealer or stone sealer?
It is a solvent-based penetrating sealer made for new or existing sanded and unsanded cementitious grout joints, rather than a tile sealer or stone sealer for the entire surface. It is not a water-based impregnator. Natural stone may require a separate compatible sealer before grouting to protect it from grout haze.
How soon can 511 Spray-On Grout Sealer be applied after grouting?
For newly installed grout, the manufacturer allows application as soon as two hours after grouting, provided grout residue has been removed and the grout has met its cure requirements. Existing grout must be clean, dry, and free of sealers, coatings, dirt, mineral deposits, grease, and other contaminants before it is sealed.
How does 511 Spray-On Grout Sealer protect grout?
The sealer penetrates cementitious grout and forms an invisible barrier that resists water and oil absorption, staining, alkalis, salt intrusion, and freeze/thaw damage. It is not a topical coating, so it allows moisture vapor to escape and does not alter the grout's natural appearance.
Will the spray harm surrounding tile or natural stone?
When used as directed, the sealer will not harm ceramic, porcelain, glazed, quarry, or glass tile, or marble, granite, limestone, travertine, slate, and other natural stone. Natural stone should be sealed before grouting to protect against grout haze, and nearby wood, carpet, metal, landscaping, and other non-masonry surfaces should be protected.
Can 511 Spray-On Grout Sealer be used indoors and outdoors?
Yes. It is intended for interior and exterior grout installations in kitchens, bathrooms, showers, backsplashes, countertops, floors, patios, pool decks, walkways, restaurants, hotels, retail spaces, and public work areas. The grout must still meet the manufacturer's preparation and application conditions.
How much grout does one 15 oz can seal?
One 15 oz aerosol can seals up to 250 linear feet of grout, which the manufacturer equates to approximately 125 square feet of installed tile. Actual coverage varies with grout texture and porosity, so highly absorbent joints may require more product or a second application.
How long does 511 Spray-On Grout Sealer take to cure?
At standard laboratory conditions, the sealer is dry to the touch in one to three hours, permits light use after about two hours, and reaches full cure in 24 hours. Keep the treated area dry and free from staining materials during that 24-hour cure period for optimal results.
What conditions and precautions apply when using this aerosol sealer?
Use the aerosol only in a well-ventilated area and protect wood, carpet, metal, landscaping, and other non-masonry surfaces from spray. The manufacturer specifies an application range of 32°F to 120°F, advises against direct sunlight, and requires no rain in the forecast for 24 hours on exterior projects.