---
product_id: 63690755
title: "- ChimneySaver FlashSeal Elastomeric Roof Chimney Flashing Sealant - Flexible and Long Lasting Waterproof Sealant to Stop Leaks Around Chimneys, Stacks, Vents & Skylights - 1 Gallon (Black)"
brand: "chimneysaver"
price: "132582 Ft"
currency: HUF
in_stock: true
url: https://www.desertcart.hu/products/63690755-chimneysaver-flashseal-elastomeric-roof-chimney-flashing-sealant-flexible-and-long
store_origin: HU
region: Hungary
---

# 100% waterproof barrier 1 gallon easy-apply liquid 7-year durability warranty - ChimneySaver FlashSeal Elastomeric Roof Chimney Flashing Sealant - Flexible and Long Lasting Waterproof Sealant to Stop Leaks Around Chimneys, Stacks, Vents & Skylights - 1 Gallon (Black)

**Brand:** chimneysaver
**Price:** 132582 Ft
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal smart, leak less—your roof’s new best friend!

## Quick Answers

- **What is this?** - ChimneySaver FlashSeal Elastomeric Roof Chimney Flashing Sealant - Flexible and Long Lasting Waterproof Sealant to Stop Leaks Around Chimneys, Stacks, Vents & Skylights - 1 Gallon (Black) by chimneysaver
- **How much does it cost?** 132582 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/63690755-chimneysaver-flashseal-elastomeric-roof-chimney-flashing-sealant-flexible-and-long)

## Best For

- chimneysaver enthusiasts

## Why This Product

- Trusted chimneysaver brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Adhesion:** Bonds permanently to asphalt shingles, metal, brick, and more for versatile roofing repairs.
- • **Leakproof Confidence:** Creates a flexible, waterproof seal that stops leaks around chimneys, vents, and skylights.
- • **Effortless Application:** Smooth brush-on liquid consistency ensures quick, mess-free sealing and easy cleanup.
- • **Flexibility That Lasts:** Synthetic rubber formula stays pliable for years—no cracking, chipping, or brittleness.
- • **Warranty-Backed Peace of Mind:** Enjoy a 7-year warranty when paired with FlashSeal Fabric—long-term protection guaranteed.

## Overview

ChimneySaver FlashSeal is a premium elastomeric roof chimney sealant designed to create a flexible, waterproof barrier that prevents leaks around chimneys, vents, stacks, and skylights. Made from durable synthetic rubber, it resists cracking and remains flexible over time. This 1-gallon liquid sealant applies smoothly with a brush and bonds permanently to various roofing materials. Backed by a 7-year warranty when used with FlashSeal Fabric, it offers reliable, long-lasting protection for your roof.

## Description

FlashSeal is a versatile and easy-to-use flashing repair system that, when dry, forms a flexible, waterproof membrane. It’s formulated for permanent adhesion to asphalt shingles, metal flashings, brick, and other chimney and roofing materials. Use FlashSeal to solve problem leaks around the base of chimneys, stacks, and vents. It is also great for sealing around skylights.  Repairing flashings that have been tarred over, split, cracked, or are in disrepair is easy with FlashSeal. It’s like installing a custom-fit rubber boot at the base of the chimney! It remains permanently flexible and has a 7 year warranty when used with FlashSeal Reinforcement Fabric.

## Features

- STOPS WATER LEAKS: Ideal for chimney flashing repair, FlashSeal creates a flexible waterproof barrier to stop leaks where chimneys meet the roofline; also works great for sealing around vents, stacks, and skylights
- LONG-LASTING FLEXIBILITY: Made from durable synthetic rubber, this roof chimney sealant won’t crack, chip, or become brittle; it stays flexible over time, ensuring reliable protection without hardening or losing its effectiveness
- EASY TO APPLY ELASTOMERIC SEALANT: This flashing chimney sealer applies smoothly with a brush (not included); apply about 1/8” of coating to the surface, making sure to fill all cracks and holes; cleans up easily with soap and water
- STRONG ADHESION: This chimney waterproofing sealant is designed for permanent bonding to asphalt shingles, metal flashing, brick, and other roofing materials; available in black, brown, and tintable white to match or complement your surface color
- CHIMNEY REPAIR PRODUCTS WITH 7-YEAR WARRANTY: Backed by a 7-year warranty when used with FlashSeal Fabric (sold separately), this chimney roof flashing sealant provides long-lasting protection and peace of mind for chimney flashing repairs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Synthetic Rubber |
| Brand | ChimneySaver |
| Style | Custom |
| Item Weight | 14 Pounds |
| Item dimensions L x W x H | 9 x 9 x 9 inches |
| Water Resistance Level | Waterproof |
| Item Form | Liquid |
| EU Spare Part Availability Duration | 7 Years |
| UPC | 709057740012 784497141964 |
| Unit Count | 128.0 Fluid Ounces |
| Number of Items | 1 |
| Color | Black |
| Surface Recommendation | Fabric |
| Manufacturer | SaverSystems |
| Part Number | 300049 |
| Item Weight | 14 pounds |
| Product Dimensions | 9 x 9 x 9 inches |
| Item model number | 24636 |
| Is Discontinued By Manufacturer | No |
| Size | 1 Gallon |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Synthetic Rubber
- **Brand:** ChimneySaver
- **Style:** Custom
- **Item Weight:** 14 Pounds
- **Item dimensions L x W x H:** 9 x 9 x 9 inches

## Images

![- ChimneySaver FlashSeal Elastomeric Roof Chimney Flashing Sealant - Flexible and Long Lasting Waterproof Sealant to Stop Leaks Around Chimneys, Stacks, Vents & Skylights - 1 Gallon (Black) - Image 1](https://m.media-amazon.com/images/I/61yvek86fYL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: does cloth come with the sealant?**
A: Negative. As of 12/5/2016, there isn't a 'with cloth' option.

**Q: Does the finished seal need to be coated to provide uv protection and extend the life?  if so, what coatings are acceptable?**
A: No, not to my knowledge. My metal flashing rusted out and I had a temporary patch with some other product (applied like caulking), but that failed in a year. Then I tried this product because I knew it was going to be temporary also because my roof was going to be replaced eventually. So, the reinforcement fabric is a must and follow the directions carefully. It held for 4 years until I eventually replaced my roof. I did not apply any sealant or UV protection product over it.

**Q: Has anyone used this around the flashing of a skylight?**
A: No, but if you use the correct detail around the skylight curb, I do not see why it would not work.

**Q: Where can I get a copy of the Material Safety Data Sheet on Flash Seal?**
A: http://chimneysaver.com/product-datasheets/https://saversystems.s3.amazonaws.com/product-data/chimneysaver-flash-seal-sds.pdf

## Frequently Bought Together

- FlashSeal Elastomeric Flashing Sealant, 1 Gallon (Black)
- FlashSeal Reinforcement Fabric, 1 roll 6"  x 150 ft
- ChimneyRx 300119 Masonry Chimney Water Repellent - Siloxane Based, Non-Film-Forming, Breathable, and Transparent Waterproof Coating for Brick Chimneys & Other Vertical Surfaces - 1 Gallon

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-01-22*