| Key Takeaways |
|---|
| Average Cost to Seal a Chimney: $150 – $400 |
| Average Cost to Waterproof a Chimney: $160 – $420 |
| Combination Cost: $170 – $820 |
| DIY Costs: Sealing – $85 – $240, Waterproofing – $70 – $200 |
| Professional Costs Vary Based on Material, Labor, and Size of Chimney |
| Frequent Maintenance Needed Every 5 to 7 Years |
Cost To Seal Or Waterproof A Chimney
Sealing and waterproofing your chimney is essential to protect it from moisture damage, which can lead to significant structural problems. The costs associated with these services vary depending on different factors. Below, we outline the costs for both professional and DIY approaches to sealing or waterproofing a chimney.
Chimney Sealing Or Waterproofing Cost
| Factor | Professional Cost | DIY Cost |
|---|---|---|
| Sealing a Chimney | $150 – $400 | $85 – $240 |
| Waterproofing a Chimney | $160 – $420 | $70 – $200 |
| Sealing & Waterproofing a Chimney | $170 – $820* | $100 – $300 |
Chimney Sealant Costs
Several types of sealants can be used for chimneys, each with different pricing. Here are the costs for some popular options:
| Sealant | Average Cost per Gallon |
|---|---|
| Black Diamond | $55 |
| Chimney Saver | $90 |
| Flex Seal | $35 |
| LastiSeal | $60 |
| Masonry Defender | $38 |
Chimney Waterproofing Costs
Waterproofing your chimney requires the purchase of specific compounds designed to keep moisture out. Here are some of the average costs:
| Waterproofer | Average Cost per Gallon |
|---|---|
| ChimneySaver | $60 |
| ChimneyRX | $38 |
| Eco Advance | $22 |
Chimney Sealing & Waterproofing Cost Factors
Several factors influence the cost of sealing or waterproofing a chimney, whether you hire a professional or do it yourself.
DIY Chimney Sealing Costs
To properly seal or waterproof your chimney yourself, you will need several materials and tools. Here’s a list of typical supplies and their average costs:
| Material | Purpose | Average Cost |
|---|---|---|
| Brick Cleaner | Seal: Ensures nothing is between the sealant and brick Waterproof: Helps compound penetrate | $25 per gallon |
| Safety Goggles | Protects eyes from splattering | Disposable: $2 Reusable: $5 – $60 |
| Disposable Gloves | Prevents chemical burns or irritation | $10 (100 count box) |
| Paintbrush | Applies the sealant or waterproofing compound | $5 – $15 |
| Sprayer | Applies the sealant or waterproofing compound | $10 – $25 |
| Ladder | Reaches the upper half of the chimney | $50 – $100+ |
Chimney Sealing & Waterproofing FAQs
How Often Does A Chimney Need To Be Sealed?
Chimneys generally need to be sealed or waterproofed every 5 to 7 years. Proper maintenance can protect your chimney from costly repairs in the future and extend its lifespan.
Does Sealing A Chimney Extend Its Lifespan?
Yes, sealing a chimney can significantly extend its lifespan by preventing moisture from seeping into the bricks and mortar. This helps to prevent cracking, spalling, and other structural damage.
Is Sealing A Chimney The Same As Waterproofing?
Sealing involves applying a protective layer to the surface to block air and moisture, while waterproofing penetrates the masonry to provide long-term moisture resistance. Both processes are essential for comprehensive chimney protection.
How To Seal A Chimney
Sealing a chimney involves a series of steps such as cleaning the surface, applying the sealant, and allowing it to dry. It can be a DIY project, but professional services ensure a thorough job.
Getting Quotes From Chimney Sealing Professionals
When seeking quotes from professionals to seal or waterproof your chimney, it’s crucial to ask the right questions to ensure quality service. Some key questions to ask include:
Questions To Ask
- What type of sealant or waterproofer will you use?
- How long will the process take?
- What is the expected lifespan of the sealant?
- Can you provide references from previous clients?
- What is the warranty on the work performed?
By understanding the costs and processes involved in sealing and waterproofing your chimney, you can make an informed decision that ensures the longevity and safety of your home.
