Should you use fabric reinforcement tape with this? Like is recommended with FlashSeal?

Are you talking about the mesh material. First cut your pieces or have a pair of scissors I find her easier to use. Get a cheap paint brush take your time paint above flashing onto the brick above the flashing and lay the mesh over. You got about 10-20 seconds to play with it …after that she gets hard to work with, and you’ll make it look worse. If you need to do a second coat wait until it dries then go back and put a second coat. If you try to go back and add more before it’s dry you’ll just mess it up. This is the type of information it takes years to acquire through trial and error. if you don’t do it right, it’s a pain to remove and then you’re really getting into a sticky situation. So recap. Depending on the size of the chimney, and I would do med/ large sections at a time. I have your pieces ready put your first coat on lay you mesh pieces and make sure you put your second coat thick enough that you can’t see the mesh.

Masonrydefender Chimney Flashing Sealer Flexible Coating That Protects Chimney Flashings

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

💧 Seal the deal on leaks before they start!

GENEROUS COVERAGE - Covers up to 14 sq. ft. per half gallon—efficient for multiple projects.
FLEXIBLE DURABILITY - Remains pliable over time—no cracking, chipping, or brittleness.
ULTIMATE LEAK DEFENSE - Seals chimney flashings to stop water penetration where roof meets chimney.
VERSATILE ROOF PROTECTION - Also seals skylights, vents, and other roof protrusions for comprehensive waterproofing.
QUICK SIMPLE APPLICATION - Brush on easily for fast, long-lasting protection without special tools.

MasonryDefender Chimney Flashing Sealer is a flexible, waterproof coating designed to protect chimney flashings and other roof penetrations from water leaks. Easy to apply with a paint brush, it remains flexible over time to prevent cracking and provides up to 14 sq. ft. of coverage per half gallon. Dries to touch within an hour and fully cures in 6-12 hours, ensuring durable, long-lasting protection.

Reviews

A**E

Worth it

Great oroduct

10.07.2026

M**K

SO FAR SO GOOD

This stuff seems phenomenal , I applied it [ Colorado ] we have had a very wet 2023 Summer , now it [ October ] seems like a drought again . Go figure ... however after EVERY storm this year [ by the way , I did the flashing on my chimney ] it has been soaked and getting to my cinder block foundation . This is not good . Anyway , after this last heavy rain , I looked , behind fireplace ... perfecto ! This stuff sealed my chimney base , so far so good and it applies very easily . The application is VERY easy , it is water based , dries like oil based , that is seems strong , not lingering wet . By the way , other reviews say the paint brush is shot afterwards , not if you wash it pretty soon after application , it is acrylic , so it washes away . Mine did ... so far so good , we will see next Spring . I think it's a winner Thanks

11.10.2023

G**.

Great product

Great product, recommended

29.05.2026

F**T

Much better than expected

I expected this to put a thin layer of protection over the metal on the chimney flashing, but it was far thicker and easier to apply than I imagined. It was able to fill in all the little gaps easily, and the finished cured coating seems tough, flexible, and thick enough to withstand the weather. I could not be happier, really.

11.08.2025

A**I

Easy to use

Brilliantly executed and very easy to use, would recommend it for anyone looking to save money by doing it yourself. With the the fiber roll you can’t beat the results.

28.10.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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€ 195.74

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In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Manufacturer	SaverSystems
Item Weight	2.23 Kilograms
Package Dimensions	17.4 x 16.61 x 13 cm; 2.23 kg
Batteries Included?	No
Batteries Required?	No

MasonryDefender Chimney Flashing Sealer - Flexible Coating That Protects Chimney Flashings from Water Leaks

Description

Specifications

Reviews

Common Questions