Will this work underwater?

I don't know. I wasn't under water when put it on.

What is the best way to clean my garden sprayer afterwards? Seems that my nozzle is clogged.

Add hot water and pump, spray. If that does not work take sprayer apart and clean head with hot water and if necessary an old toothbrush to get out remaining residue.

Can I use my Graco airless paint sprayer to apply this?

I see no reason why you can't as it's a water based coating.

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MasonryDefender Patio Paver Sealer - Low Gloss, Water-Based, Clear Sealant for Stone - 1 Gallon

MasonryDefender Patio Paver Sealer - Low Gloss, Water-Based, Clear Sealant for Stone - 1 Gallon

Product ID: 64274422

Details

Brand
Item Weight
9 Pounds
Material
Acrylic
Style
Protection
Water Resistance Level
Waterproof

💧Water-based, eco-friendly formula

🖌️Covers up to 150 sq ft per gallon

🛡️Seals joints, locks sand, prevents weeds

€ 257.58

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Protect your patio like a pro—seal in style and durability!

JOINT SAND STABILIZER - Locks in sand to prevent weed growth and ant invasion
LOW ODOR EASY CLEANUP - Safe indoor/outdoor use with simple soap and water cleanup
CRYSTAL CLEAR LOW GLOSS FINISH - Enhances natural stone beauty without yellowing or fading
VERSATILE SURFACE COMPATIBILITY - Perfect for pavers, bricks, and concrete patios
EFFORTLESS APPLICATION FAST DRYING - No mixing needed; dries in 1-2 hours for quick project turnaround

MasonryDefender Patio Paver Sealer is a premium water-based acrylic sealant designed to protect and enhance stone, brick, and concrete surfaces. Offering a clear, low gloss finish, it waterproofs and stabilizes joint sand to prevent weed growth and ant colonization. Easy to apply with no mixing required, it covers up to 150 sq ft per gallon and dries quickly with low odor, making it the smart choice for long-lasting outdoor surface protection.

Specifications

ASIN	B076CQLKPK
Best Sellers Rank	#108,607 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #370 in Hardware Sealers
Brand Name	MasonryDefender
Color	white
Compatible Material	Concrete, Stone
Customer Reviews	4.6 4.6 out of 5 stars (573)
Item Form	Liquid
Item Weight	9 Pounds
Manufacturer	SaverSystems
Material Type	Acrylic
Number of Items	1
Part Number	300551
Style Name	Protection
Surface Recommendation	Stone
UPC	709057000055
Unit Count	128.0 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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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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