does this darken the color of the stone? does the stone look different at all after it dries- including sheen?

I saw no change in color at all.

Does this product need to be diluted with any other thing?

No this product is ready to use and does not need to be diluted.

If you are sealing around outside windows, do you need to tape off the windows? Does this harm windows or metal painted trim around windows?

I used it on brick and stone and actually coated a metal mailbox with no issues. I would probably tape off the glass.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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MasonryDefender All Purpose Brick Stone & Concrete Sealer - Transparent Penetrating Waterproof Coating for Outdoor Masonry Surfaces - 2.5 Gallon

Product ID: 123161638

Details

Brand
Item Weight
8.6 pounds
Material
Style
Protection
Water Resistance Level
Waterproof

⏳Long-lasting weather resistance

💧Deep-penetrating waterproof barrier

🧱Multi-surface compatibility

VT98992

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Seal in strength, seal out worry — your masonry’s best defense!

DURABILITY THAT LASTS - Engineered to withstand harsh weather and heavy foot traffic, keeping surfaces pristine year-round.
EFFORTLESS APPLICATION - Easy spray-on formula designed for DIY pros and contractors alike, ensuring even, deep penetration.
PRESERVE NATURAL BEAUTY - Transparent formula maintains the authentic look of your outdoor masonry while enhancing longevity.
ULTIMATE WATERPROOF SHIELD - Protect your masonry with a clear, invisible barrier that repels moisture without altering appearance.
VERSATILE SURFACE DEFENDER - Seals concrete, brick, stone, limestone, granite, and more—one gallon covers up to 150 sq. ft.

MasonryDefender All Purpose Sealer is a premium Silane-Siloxane formula that penetrates deeply to waterproof and protect outdoor masonry surfaces like concrete, brick, and stone. Offering clear, invisible protection, it covers up to 150 sq. ft. per gallon and resists harsh weather and heavy use, making it ideal for both DIY enthusiasts and professionals seeking long-lasting durability without compromising natural aesthetics.

Specifications

ASIN	B083WLLCZ5
Best Sellers Rank	#77,623 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #263 in Hardware Sealers
Brand	MasonryDefender
Brand Name	MasonryDefender
Color	clear
Compatible Material	Marble
Customer Reviews	4.3 out of 5 stars 873 Reviews
Item Form	Liquid
Item Weight	22.3 pounds
Manufacturer	SaverSystems
Material	Silicone
Material Type	Silicone
Number of Items	1
Part Number	300653
Style	Protection
Style Name	Protection
Surface Recommendation	Concrete, brick, patio stones, limestone, granite, sidewalks
UPC	709057001151
Unit Count	320 Fluid Ounces
Water Resistance Level	Waterproof

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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