A leaking pipe is more than a nuisance. It can lead to costly water damage, mold, and sky-high energy bills. That’s where a good spray foam sealant becomes a homeowner’s best friend. These expanding foams quickly fill gaps and cracks around pipes, creating a durable, water-resistant seal that stops leaks and drafts in their tracks. This roundup cuts through the clutter to bring you the top-performing spray foams, tested and reviewed to help you find the perfect fix for your plumbing woes.
In This Article
- 1 Quick Product Comparison
- 2 Our Top 10 Best Spray Foam For Leaking Pipes Reviews – Expert Tested & Recommended
- 2.1 1. Great Stuff Spray Foam for Leaking Pipes and Cracks, 12 Ounce Cream
- 2.2 2. BEEST FullStop Spray Foam Kit for Pipe Leaks and Insulation, 240 Board Feet with Pro Gun
- 2.3 3. Stanley Expanding Foam Sealant for Leaking Pipes and Wide Cracks, Indoor and Outdoor, 24 Oz 2-Pack
- 2.4 4. BEEST FullStop Spray Foam Kit for Sealing Pipe Leaks and Insulation, 20 Board Feet with Gun
- 2.5 5. Red Devil Spray Foam for Small Pipe Leaks and Cracks, Expanding Polyurethane Sealant, 12 Ounce
- 2.6 6. Red Devil Spray Foam for Large Pipe Leaks and Gaps, Expanding Polyurethane Sealant, 8 Ounce
- 2.7 7. BEEST FullStop Spray Foam Kit for Insulating and Sealing Pipe Leaks, 480 Board Feet with Gun
- 2.8 8. STANLEY F 990P Supercoat Spray Foam Insulation Kit – Closed Cell Spray Foam Covers Up to 40 Sq.Ft…
- 2.9 9. Great Stuff 157911 Insulating Foam Sealant, 20 Ounce, Ivory
- 2.10 10. 12 Pack Self-Adhesive Pipe Insulation Foam Tubes for Winterizing Outdoor Pipes with Seam Tape
- 3 Complete Buying Guide for Best Spray Foam For Leaking Pipes
- 4 Frequently Asked Questions
Quick Product Comparison
Our Top 10 Best Spray Foam For Leaking Pipes Reviews – Expert Tested & Recommended
1. Great Stuff Spray Foam for Leaking Pipes and Cracks, 12 Ounce Cream
This Great Stuff foam is a reliable go-to for sealing those annoying gaps around pipes. It expands to fill cracks and stops right where you stop spraying, making it less messy than other options. It’s a solid choice for quick fixes that save energy and prevent drafts.
Key Features That Stand Out
- ✓ Reduces drafts and saves energy by sealing gaps effectively.
- ✓ No drips and less mess with precise application control.
- ✓ Durable formula perfect for daily use around the home.
- ✓ Ideal for small to medium pipe leaks and cracks.
Why We Recommend It
We recommend this foam because it’s user-friendly and gets the job done without fuss. It’s a trusted brand that delivers consistent performance for common household leaks.
Best For
Homeowners looking for a quick, reliable sealant for small plumbing leaks and insulation gaps indoors.
Pros and Cons
Pros:
- Easy to use with minimal mess.
- Effective at sealing and insulating.
- No strong odor during application.
- Dries quickly for a neat finish.
Cons:
- Can be tricky to clean from the nozzle for reuse.
- Coverage may be limited for very large gaps.
Customer Reviews
“Great stuff gets the job done and easy to use. Hides holes and cracks! No smell and the color is not bad.”
“Product: 2 stars• I have embarked on a marvelous voyage into the world of Xbox customization, thanks to the Great Stuff Gaps and Cracks Insulating Foam Sealant with Quick Stop Straw, a spray foam that fills, seals, and insulates gaps and cracks.• This spray foam is specially designed to…” (Note: User mentioned application for non-pipe use, but highlights its filling capability.)
2. BEEST FullStop Spray Foam Kit for Pipe Leaks and Insulation, 240 Board Feet with Pro Gun
This BEEST kit is a powerhouse for larger projects. It comes with a pro gun and enough foam to cover 240 board feet, making it ideal for serious insulation and leak sealing. The foam expands consistently for a tight seal that boosts energy efficiency.
Key Features That Stand Out
- ✓ High-coverage kit with 12 cans and a heavy-duty spray foam gun.
- ✓ Exceptional thermal insulation and soundproofing with a high R-value.
- ✓ Hybrid one-component foam that expands controllably.
- ✓ Recommended for temperatures between 68–77°F for best results.
Why We Recommend It
We recommend this kit for its professional-grade results and ease of use. The included gun offers better control than standard straws, perfect for DIY enthusiasts tackling big jobs.
Best For
Extensive pipe insulation projects, sealing large leaks, or whole-home energy efficiency upgrades.
Pros and Cons
Pros:
- Excellent coverage and insulation performance.
- Pro gun provides precise, easy application.
- Great for both sealing leaks and general insulation.
- Foam adheres well to various surfaces.
Cons:
- Higher upfront cost compared to single cans.
- Requires careful temperature control during application.
- Can be overwhelming for very small repairs.
Customer Reviews
“I used the spray foam kit on a hunting blind, and wow — what a difference. The foam filled in every seam and sealed it tight. Even in cold mornings, it holds warmth really well.I liked that the kit didn’t feel intimidating. Followed the instructions, took it slow, and it turned out great. A little p…”
“Very happy with the results and coverage. Gun that came with the kit was excellent- better quality than GREATSTUFF. Spray was easy to apply and the adjustment knob just made it a dream to spray from a can. BEEST does have a big social media presence but I’m glad their product backs itSmall gripe is …”
3. Stanley Expanding Foam Sealant for Leaking Pipes and Wide Cracks, Indoor and Outdoor, 24 Oz 2-Pack
This Stanley 2-pack offers great value for money. It’s designed to fill wide gaps up to 3 inches, making it versatile for both indoor and outdoor pipe leaks. The foam works in extreme temperatures, so it’s reliable year-round.
Key Features That Stand Out
- ✓ High-yield foam for large gaps up to 3 inches wide.
- ✓ All-season performance from -103°F to +239°F.
- ✓ Adheres to multiple surfaces like concrete, wood, and metal.
- ✓ Comes in a convenient 2-pack for multiple projects.
Why We Recommend It
We recommend this for its budget-friendly price and robust performance. It’s a solid choice for tackling bigger leaks without breaking the bank.
Best For
Sealing large pipe leaks, wide cracks, or for use in varying weather conditions.
Pros and Cons
Pros:
- Excellent value with two large cans.
- Strong expansion for filling big gaps.
- Versatile for indoor and outdoor use.
- Durable and weather-resistant.
Cons:
- Can be messy if not applied carefully due to high expansion.
- Requires proper surface preparation for best adhesion.
Customer Reviews
“Aside from instructions/warnings on label, I recommend using a drop cloth for when foam expands; especially for indoor use.Very easy to use, however if planning on using again, clean tube thoroughly before drying. Seems like quality foam insulation, adhered well as it fills; though prepare for leaki…”
“Happy with this item. It is a tall can and definitely a wide gap foam. I would not use it in an application where the not enough surrounding strength to stop the expanding foam from doing damage. It was easy to use and apply.”
4. BEEST FullStop Spray Foam Kit for Sealing Pipe Leaks and Insulation, 20 Board Feet with Gun
This smaller BEEST kit is perfect for moderate projects. It includes a gun and covers 20 board feet, offering professional-quality sealing without the bulk of larger kits. It’s great for targeted pipe leak repairs.
Key Features That Stand Out
- ✓ All-in-one kit with 1 can and a heavy-duty spray foam gun.
- ✓ Provides exceptional thermal insulation and soundproofing.
- ✓ Hybrid foam that expands controllably for precise application.
- ✓ Ideal for temperatures between 68–77°F.
Why We Recommend It
We recommend it for its balance of quality and manageability. The gun makes application smooth, and it’s enough foam for several small to medium leaks.
Best For
Homeowners who want a gun-applied foam for precise sealing of pipe leaks without committing to a large kit.
Pros and Cons
Pros:
- Professional gun included for better control.
- Good insulation properties for energy savings.
- Easy to use with clear instructions.
- Compact kit suitable for DIY repairs.
Cons:
- Coverage is limited compared to multi-can kits.
- May require practice to master the gun adjustment.
Customer Reviews
“I used the spray foam kit on a hunting blind, and wow — what a difference. The foam filled in every seam and sealed it tight. Even in cold mornings, it holds warmth really well.I liked that the kit didn’t feel intimidating. Followed the instructions, took it slow, and it turned out great. A little p…”
“Very happy with the results and coverage. Gun that came with the kit was excellent- better quality than GREATSTUFF. Spray was easy to apply and the adjustment knob just made it a dream to spray from a can. BEEST does have a big social media presence but I’m glad their product backs itSmall gripe is …”
5. Red Devil Spray Foam for Small Pipe Leaks and Cracks, Expanding Polyurethane Sealant, 12 Ounce
This Red Devil foam is a classic for minor repairs. It’s designed to fill small holes and cracks around pipes, both indoors and outdoors. It’s sandable and paintable, so you can blend it seamlessly after curing.
Key Features That Stand Out
- ✓ Perfect for insulating and preventing drafts in small gaps.
- ✓ Can be used inside or outside the home.
- ✓ Sandable, paintable, and stainable after curing.
- ✓ Reliable polyurethane formula for durability.
Why We Recommend It
We recommend it for its versatility and finish options. It’s a straightforward product that works well for quick touch-ups around pipes.
Best For
Small pipe leaks, crack filling, and projects where you need a paintable finish.
Pros and Cons
Pros:
- Easy to use for beginners.
- Paintable finish allows for customization.
- Effective for draft stopping and insulation.
- Affordable and widely available.
Cons:
- Limited expansion for larger gaps.
- Can be messy if over-applied.
Customer Reviews
“1st time using this kinda product.Made to use onceGood for the priceGets the job done”
“Works great. Easy to use. Used to fill in some cracks through the house. Love that I can spray on a hole and cut off the excess easily”
6. Red Devil Spray Foam for Large Pipe Leaks and Gaps, Expanding Polyurethane Sealant, 8 Ounce
This Red Devil variant is tailored for larger leaks. It expands significantly to fill big gaps around pipes, making it ideal for vertical applications where foam might otherwise sag. It’s a strong sealant for tough jobs.
Key Features That Stand Out
- ✓ Designed to fill large holes, gaps, and cracks effectively.
- ✓ Suitable for both indoor and outdoor use.
- ✓ Sandable, paintable, and stainable after curing.
- ✓ Polyurethane formula ensures a durable seal.
Why We Recommend It
We recommend it for its powerful expansion on vertical surfaces. It sticks well and doesn’t fall out, perfect for sealing around pipes in walls or foundations.
Best For
Large pipe leaks, wide gaps, and sealing areas where pests might enter.
Pros and Cons
Pros:
- Strong expansion for filling big gaps.
- Adheres well to vertical surfaces.
- Versatile for various repair scenarios.
- Can be finished with paint for aesthetics.
Cons:
- Smaller can size (8 oz) may require multiple applications for very large areas.
- Expansion can be hard to control if not experienced.
Customer Reviews
“My decoy broke. This fixed it enough to use. This and duct tape, or should I call it duck tape since it was a duck decoy. It floats now and that’s what matters.”
“It really expands quickly to fill large vertical gaps when you’d think it would just fall out but it doesn’t. My back cement steps have shifted away from the house about 3 to 4 inches and squirrels had squeezed in the and were digging their wainup under the siding. I sealed the area during the day w…”
7. BEEST FullStop Spray Foam Kit for Insulating and Sealing Pipe Leaks, 480 Board Feet with Gun
This is the heavy-duty option from BEEST, covering 480 board feet with 24 cans and a gun. It’s for major insulation projects where you need to seal multiple pipe leaks and improve overall home efficiency.
Key Features That Stand Out
- ✓ Massive coverage with 24 cans and a professional spray foam gun.
- ✓ High R-value for superior thermal insulation and soundproofing.
- ✓ Hybrid one-component foam for controlled expansion.
- ✓ Best applied at 68–77°F for optimal performance.
Why We Recommend It
We recommend this kit for large-scale DIY or semi-professional use. It’s cost-effective per board foot and delivers consistent, high-quality results.
Best For
Big projects like insulating entire basements, attics, or sealing numerous pipe leaks in commercial or residential settings.
Pros and Cons
Pros:
- Extremely high coverage for the price.
- Professional-grade insulation performance.
- Gun allows for efficient, waste-free application.
- Great for energy-saving upgrades.
Cons:
- Very high initial investment.
- Requires significant time and effort to apply.
- Not suitable for small, quick fixes.
Customer Reviews
“I used the spray foam kit on a hunting blind, and wow — what a difference. The foam filled in every seam and sealed it tight. Even in cold mornings, it holds warmth really well.I liked that the kit didn’t feel intimidating. Followed the instructions, took it slow, and it turned out great. A little p…”
“Very happy with the results and coverage. Gun that came with the kit was excellent- better quality than GREATSTUFF. Spray was easy to apply and the adjustment knob just made it a dream to spray from a can. BEEST does have a big social media presence but I’m glad their product backs itSmall gripe is …”
8. STANLEY F 990P Supercoat Spray Foam Insulation Kit – Closed Cell Spray Foam Covers Up to 40 Sq.Ft…
This Stanley kit uses closed-cell foam for superior insulation. It covers up to 40 sq. ft. and creates a seamless barrier that’s excellent for sealing pipe leaks and improving energy efficiency.
Key Features That Stand Out
- ✓ Advanced polyurethane closed-cell foam for high R-value insulation.
- ✓ Seamless monolithic application without gaps or junctures.
- ✓ Low thermal conductivity for effective heat and sound insulation.
- ✓ Covers up to 40 square feet per kit.
Why We Recommend It
We recommend it for its professional-grade insulation properties. The closed-cell foam is moisture-resistant, making it great for leak-prone areas around pipes.
Best For
Areas requiring high insulation value, such as around pipes in crawl spaces or basements where moisture is a concern.
Pros and Cons
Pros:
- Excellent thermal and sound insulation.
- Moisture-resistant closed-cell formula.
- Easy application with good coverage.
- Durable and long-lasting seal.
Cons:
- Higher cost per kit compared to some open-cell foams.
- May require specific cleaning agents for tools.
Customer Reviews
“Bought a 12 packIt covered about 176 board feet between 1-2”Each “panel in my shop is 11’x8’“ and it sprays nice . I let the foam sit in my house overnight at 65* then sprayed it quick. Dipped sprayer tip in silicon grease and didn’t have to change the tip once . Cleaner worked well too.I’m happy ov…”
“Worked great. Easy. Coverdale nice and stuckRead more”
9. Great Stuff 157911 Insulating Foam Sealant, 20 Ounce, Ivory
This Great Stuff foam is a versatile 20-ounce can for general insulation and air sealing. It’s easy to apply in various areas, including around pipes, and provides a smooth finish for a clean look.
Key Features That Stand Out
- ✓ Expanding foam sealant for effective insulation and air sealing.
- ✓ 20-ounce can for ample coverage in multiple applications.
- ✓ Ivory color for a neutral, blendable appearance.
- ✓ Ideal for daily use in home maintenance.
Why We Recommend It
We recommend it for its reliability and larger can size. It’s a workhorse for sealing pipe leaks and other gaps without frequent re-purchases.
Best For
General-purpose sealing around pipes, windows, and doors where insulation and draft prevention are needed.
Pros and Cons
Pros:
- Larger can offers good value for money.
- Easy to use with a standard straw applicator.
- Dries quickly with a decent appearance.
- Trusted brand with consistent quality.
Cons:
- Nozzle can clog if not cleaned properly after use.
- May require multiple passes for very deep gaps.
Customer Reviews
“The only thing I don’t like about this stuff is if you just need a little bit and then you store it away you can’t use it once that stuff hardens up in the spray nozzle so what I did this time was I made sure to clean out the excess material out of the nozzle in the can itself as well as the straw w…”
“easy to use, dried quick with a decent appearance. could be cheaper but hey its 2025 what do you expect.”
10. 12 Pack Self-Adhesive Pipe Insulation Foam Tubes for Winterizing Outdoor Pipes with Seam Tape
This isn’t a spray foam, but a set of foam tubes with self-adhesive and seam tape. It’s perfect for winterizing outdoor pipes to prevent freezing and leaks. The kit includes everything needed for easy installation.
Key Features That Stand Out
- ✓ 12 self-adhesive foam tubes, aluminum foil joint tape, and cable zip ties included.
- ✓ Each tube is 1.3 feet long, cuttable to size, with a total of 15.6 feet.
- ✓ Rubber insulation foam wrapped in aluminum foil for durability and weather resistance.
- ✓ Ideal for protecting pipes from freezing and reducing heat loss.
Why We Recommend It
We recommend it as a preventive measure rather than a repair. It’s great for wrapping pipes before leaks occur, especially in cold climates.
Best For
Winterizing outdoor pipes, preventing freeze-related leaks, and adding insulation to exposed plumbing.
Pros and Cons
Pros:
- Complete kit with all necessary accessories.
- Easy to install with self-adhesive design.
- Effective at preventing pipe freezing.
- Durable and weather-resistant materials.
Cons:
- Not for sealing active leaks; it’s preventive insulation.
- May be overpriced for the quantity compared to bulk options.
Customer Reviews
“We live on the tundra of western South Dakota. Our harsh winters (think 40 below at times) require pipe wrapping in the fall in advance of the onslaught. It is important to check those pipes every year and make sure the insulation is still in place. Temperature extremes, barn cats and other creatur…”
“This is a good set. I like that they insulation tape is pre-attached and all you have to do is peel the remaining back off. The foam is a decent thickness and dense. I love that it comes with zip ties and extra tape to seal up the seams. I do this for only 12 pieces its a bit overpriced which is why”
Complete Buying Guide for Best Spray Foam For Leaking Pipes
Essential Factors We Consider
When picking the best spray foam for leaking pipes, think about a few key things. First, check the expansion rate—some foams expand a lot for big gaps, others less for precision. Next, look at cure time; faster drying is good for quick fixes, but slower can mean stronger bonds. Also, consider application temperature; some foams work best in warm weather, others are all-season. Don’t forget coverage area per can to estimate how much you need. Finally, ensure it’s suitable for indoor or outdoor use and adheres well to your pipe material.
Budget Planning
Spray foams range from cheap single cans to expensive kits. For small leaks, a budget-friendly can under $20 might do. For larger projects, kits with guns offer better value per board foot but cost more upfront. Remember, investing in a quality foam can save money on energy bills and prevent costly water damage. Balance initial cost with long-term benefits.
Final Thoughts
Choosing the right spray foam depends on your specific leak. Assess the gap size, location, and your skill level. Always wear safety gear like gloves and goggles. Test on a small area first. With the right product, you can seal leaks effectively and improve your home’s efficiency.
Frequently Asked Questions
Q: How long does spray foam take to cure fully?
A: Most spray foams cure to the touch in 1-2 hours, but full curing can take 8-24 hours. It depends on the product and humidity. Avoid disturbing the foam until it’s fully cured for the best seal.
Q: Can spray foam be used on all types of pipes?
A: Yes, spray foam generally adheres to common pipe materials like PVC, copper, and steel. However, for very hot pipes, check the foam’s temperature tolerance. Always clean the pipe surface first for better adhesion.
Q: Is spray foam waterproof?
A: Many spray foams are water-resistant, but not always fully waterproof. Closed-cell foams offer better moisture resistance than open-cell. For active leaks, ensure the foam is rated for wet areas or use it as a supplement to proper repairs.
Q: How do I remove excess spray foam?
A: Use a utility knife or saw to trim cured foam. For uncured foam, wipe it with a rag and acetone or a specialized foam cleaner. Always follow the product’s instructions for cleanup.
Q: Can I paint over spray foam?
A: Yes, most spray foams are paintable once fully cured. Sand it smooth first for a better finish. Use a latex-based paint for best results.
Fixing leaking pipes with spray foam is a smart DIY move that can save you time and money. From the precise control of Great Stuff to the heavy-duty coverage of BEEST kits, there’s an option for every need. Remember, for major leaks, consult a professional, but for most common gaps, these foams work wonders. Assess your project, pick the right product from our list, and take action to protect your home. Ready to seal those leaks? Check out the links above to find the perfect spray foam for your pipes today!
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