Imagine your beautiful home, standing strong against the rain and snow. But what happens when the water starts to sneak in? It can damage your walls, create mold, and cost a lot to fix. That’s why protecting your home from water is super important!
Choosing the right exterior waterproofing membrane can feel like a puzzle. There are so many types, and they all promise to keep water out. But not all of them work the same way, and picking the wrong one can lead to leaky problems down the road. You want a membrane that will keep your house dry and safe for years to come.
In this blog post, we’ll break down what an exterior waterproofing membrane is and why it’s a superhero for your home. We’ll explore the different kinds available and what makes them special. By the end, you’ll feel much more confident about choosing the best one for your needs. Let’s dive in and make sure your home stays dry and happy!
Our Top 5 Exterior Waterproofing Membrane Recommendations at a Glance
Top 5 Exterior Waterproofing Membrane Detailed Reviews
1. MFM SubSeal40 Waterproof House Wrap – 40 mil (1
Rating: 9.4/10
The MFM SubSeal40 Waterproof House Wrap is a tough protector for your building’s foundation. This 40-mil thick wrap gives you serious defense against water, especially below ground. It’s designed to move with your building, so it won’t crack or break.
What We Like:
- It’s really strong and stretchy. This means it can grow and shrink with your building’s walls.
- The outside of the wrap works well with many building sealants.
- It’s perfect for foundations that are underground. It’s made to keep out lots of moisture.
- It protects Insulated Concrete Forms (ICFs) and foam boards during the backfilling process.
- The rubbery asphalt stays flexible and doesn’t dry out or crack.
- It seals itself around nails, staples, and screws, stopping leaks.
- It has a steady thickness for reliable protection.
- Putting it on is quick and easy.
What Could Be Improved:
- The specific dimensions (1, 36in.) might require careful planning for larger projects.
- While it self-seals, using proper fasteners and sealing techniques is still important for the best results.
Overall, the MFM SubSeal40 offers excellent waterproofing and durability for below-grade applications. It’s a smart choice for safeguarding your foundation against moisture.
2. MFM SubSeal60 Waterproof House Wrap – 60 mil (1
Rating: 9.1/10
Protect your home from water damage with the MFM SubSeal60 Waterproof House Wrap. This strong wrap offers excellent protection for your building’s foundation and structure, even in tough weather. It’s designed to keep water out and your home dry, making it a smart choice for any construction project.
What We Like:
- It stretches and moves with your building, so it won’t crack.
- The outside layer works well with different sealants.
- It’s made to stop a lot of moisture.
- The rubbery asphalt stays flexible and doesn’t dry out.
- It seals itself around nails and screws to stop leaks.
- It has a steady thickness for reliable protection.
- It’s great for foundations and parts of the building that are underground.
- It’s quick and simple to put up.
- Meets important building standards like ASTM D 1970.
What Could Be Improved:
- The roll weight (72 pounds) might make it a bit heavy for one person to handle easily.
- While it’s compatible with most sealants, specific testing might be needed for certain brands.
The MFM SubSeal60 is a top-notch product for waterproofing. It provides dependable defense against moisture, ensuring your building stays sound for years to come.
3. Liquid Rubber Basement and Foundation Repair Sealant – Waterproof Concrete Sealer & Crack Filler – Flexible Coating for Indoor & Outdoor Use – Waterproofing Paint – Black
Rating: 9.4/10
Tired of damp basements and foundation leaks? Liquid Rubber Basement and Foundation Repair Sealant is your answer. This black, one-gallon container holds a powerful, flexible coating designed to create a permanent waterproof barrier. It’s like a tough, rubbery shield for your home’s foundation, keeping water out and protecting your concrete, masonry, wood, and metal surfaces from damage. Whether you’re tackling a leaky basement, a cracked foundation, or even waterproofing planter boxes, this sealant is made to last.
What We Like:
- Super flexible sealant with 900% elongation, preventing future cracks and leaks effectively.
- Offers complete basement waterproofing, going beyond basic paints and sealers.
- Works as a versatile concrete crack filler, adhering well to various materials like concrete, masonry, wood, and metal.
- Easy to apply like paint by brush, roller, or sprayer, with zero VOCs for safe indoor use.
- Maintains flexibility in all temperatures, ensuring long-lasting protection.
What Could Be Improved:
- Coverage varies significantly based on the number of coats needed for interior and exterior applications.
- Not suitable for walking surfaces due to its cured tackiness.
- For best results, it’s recommended to use with Liquid Rubber Geo-Textile on joints and transitions, which is an additional purchase.
This Liquid Rubber sealant provides a robust, flexible solution for your waterproofing needs. It’s a smart choice for protecting your home from water damage and ensuring a dry, secure foundation.
4. BXI SBS Modified Bitumen Waterproofing Membrane Roll
Rating: 8.7/10
Protect your home from water damage with the BXI SBS Modified Bitumen Waterproofing Membrane Roll. This tough, flexible material acts as a powerful shield against leaks, making it perfect for a variety of outdoor and indoor projects. Its unique self-healing ability means it can fix small tears on its own, giving you long-lasting peace of mind.
What We Like:
- Excellent dual waterproofing creates a strong, watertight barrier.
- Self-healing feature automatically seals minor damages, extending its life.
- Works in all weather, from very cold (-4°F) to hot temperatures, without cracking or melting.
- Super flexible, so it fits easily around corners and curves.
- Resists tears, punctures, chemicals, UV rays, and aging for tough protection.
- Easy to install with torch application or waterproof glue.
- Can be cut to any size needed with a sharp knife.
- Versatile for many uses like roofs, foundations, bathrooms, balconies, and more.
What Could Be Improved:
- The product has a noticeable asphalt odor.
This BXI membrane offers reliable protection for many areas of your home. It’s a smart choice for keeping water out and your property safe.
5. Liquid Rubber Waterproof Sealant – DIY Leak Repair Coating for Flat
Rating: 8.7/10
Tired of leaks? This Liquid Rubber Waterproof Sealant is your DIY hero for fixing those annoying drips and seeps. It creates a super strong, rubbery shield that keeps water out on almost any surface. Whether it’s your roof, foundation, or even a leaky gutter, this black sealant is ready to tackle the job.
What We Like:
- It’s made with tough, industrial-strength bitumen that works where others don’t.
- It stays flexible, stretching over 950% so it won’t crack or peel when things move or the weather changes.
- You can brush, roll, or spray it on, making application easy.
- The water-based formula is safe to use, with no harsh smells or harmful stuff.
- It sticks really well to metal, concrete, and wood.
- Both pros and regular homeowners use it because it gives professional results.
What Could Be Improved:
- It needs several coats to create a thick enough layer for flat roofs, so you might use more than you expect.
- The sealant stays a bit sticky after it dries, so it’s not good for places where people walk a lot.
This Liquid Rubber Sealant offers a robust solution for waterproofing your home. It’s a dependable choice for anyone looking to stop leaks and protect their property.
Your Shield Against Water: A Guide to Exterior Waterproofing Membranes
Water is a powerful force. It can cause damage to your home if it gets in where it shouldn’t. Exterior waterproofing membranes act like a superhero cape for your building, protecting it from rain, snow, and moisture. This guide will help you choose the best one.
Why You Need an Exterior Waterproofing Membrane
These membranes create a barrier. This barrier stops water from seeping into your walls, foundations, and other exterior surfaces. This prevents problems like mold growth, rot, and structural damage. A good membrane keeps your home dry and healthy.
Key Features to Look For
1. Durability and Longevity
You want a membrane that lasts. Look for products that are tough and can withstand years of weather. They should resist tears and punctures. A long-lasting membrane saves you money and hassle in the long run.
2. Flexibility
Buildings can shift and settle a little. A flexible membrane can stretch and move with the building. This prevents it from cracking. Cracks let water in, so flexibility is important.
3. Adhesion
The membrane needs to stick well to the surface. Good adhesion means it won’t peel or lift. This ensures a continuous barrier against water.
4. Breathability (Permeability)
This might seem strange, but some membranes need to let moisture vapor escape from inside the wall. This is called being “breathable.” It helps prevent trapped moisture, which can also cause damage. However, for certain applications like foundation waterproofing, you want a non-breathable membrane to keep water out completely.
5. Ease of Application
Some membranes are easier to install than others. Consider if you’re doing it yourself or hiring a professional. Some are roll-on, others are spray-on, and some are self-adhesive sheets.
Important Materials
Exterior waterproofing membranes are made from different materials. Each has its own strengths:
- Asphalt-Based Membranes: These are common and affordable. They are usually rolled onto surfaces. They offer good water resistance.
- Polyurethane Membranes: These are very flexible and durable. They are often used for foundations and roofs. They can be sprayed or rolled on.
- Bitumen Membranes: Similar to asphalt, these are also good at repelling water. They are often reinforced with fiberglass for extra strength.
- Liquid-Applied Membranes: These are applied as a liquid and cure to form a seamless, waterproof layer. They are great for tricky shapes and details.
- Sheet Membranes: These come in large rolls or sheets. They are typically self-adhesive or require a special adhesive. They offer a consistent thickness.
Factors That Improve or Reduce Quality
What Makes a Membrane Better?
- High Tensile Strength: This means it’s hard to stretch or break.
- Good UV Resistance: If exposed to sunlight, it shouldn’t break down.
- Chemical Resistance: It shouldn’t be damaged by common chemicals found in soil or on surfaces.
- Proper Installation: Even the best membrane won’t work if it’s not installed correctly.
What Can Make a Membrane Worse?
- Poor Adhesion: If it doesn’t stick, it won’t protect.
- UV Degradation: Sunlight can weaken some materials.
- Physical Damage: Sharp objects can puncture the membrane.
- Incorrect Application: Applying it in the wrong temperature or on a dirty surface can cause failure.
User Experience and Use Cases
Homeowners often use these membranes on foundations to stop basement leaks. They are also used on exterior walls behind siding to protect against rain. Roofs are another common place for waterproofing membranes to prevent leaks.
A good user experience means the product is easy to work with and provides peace of mind. Knowing your home is protected from water damage is a great feeling. A poorly chosen or installed membrane can lead to costly repairs and frustration.
Frequently Asked Questions (FAQ)
Q: What is the main purpose of an exterior waterproofing membrane?
A: Its main purpose is to stop water from getting into your home’s exterior walls and foundation.
Q: Are all waterproofing membranes the same?
A: No, they are made from different materials and have different features, making some better for certain jobs than others.
Q: How long do exterior waterproofing membranes usually last?
A: Many quality membranes can last for 20 years or more, but this depends on the material and installation.
Q: Can I install a waterproofing membrane myself?
A: Some types are DIY-friendly, especially sheet membranes. However, others, like spray-on polyurethane, are best left to professionals.
Q: What is “breathability” in a waterproofing membrane?
A: Breathability means the membrane allows water vapor to escape from inside the wall while still blocking liquid water.
Q: When should I consider using a waterproofing membrane?
A: You should consider it when building a new home, doing major renovations, or if you are experiencing water damage or leaks in your foundation or exterior walls.
Q: Does the climate affect which membrane I should choose?
A: Yes, in very cold or very hot climates, you might need a membrane that can handle extreme temperatures and expansion/contraction.
Q: How much does an exterior waterproofing membrane cost?
A: Costs vary widely depending on the type of material, the area to be covered, and whether you hire a professional. It’s an investment in protecting your home.
Q: What happens if a waterproofing membrane fails?
A: Failure can lead to water intrusion, causing mold, rot, structural damage, and costly repairs to your home.
Q: Can I put a waterproofing membrane over existing paint?
A: Generally, no. The surface needs to be clean and properly prepared for the membrane to adhere correctly and function effectively.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.
I’m the recipe developer and food photographer behind Air Fryer at Tiffany’s. I’m also a wife, mom to two adventurous little boys, registered nurse, and live in the great Midwest. Join me as I show you new ways to use your air fryer that you never knew possible.