Best Exterior Sealants Under $20: Waterproofing On A Budget

That little trickle of water seeping in through your window frame after a heavy rain, or the persistent draft whistling through a crack in your siding—these are the silent villains attacking your home’s integrity and comfort. We’ve all been there, staring at a growing problem and wondering how to tackle it without breaking the bank. The good news? You absolutely can protect your home from the elements without emptying your wallet.

This is where we step in. We understand the frustration of searching for affordable solutions that actually deliver on their promises. Our goal is to provide you with reliable information and reviews to help you find the best exterior sealants under $20. Let’s dive into our guide and discover the perfect, budget-friendly fix for those nagging exterior issues, ensuring your home stays cozy and protected, all year round.

We will review the best exterior sealants under $20 later in this article. But before that, take a look at some relevant products on Amazon:

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Don’t Let Cracks Break the Bank: Sealing Your Home on a Budget

Okay, let’s talk about that nagging feeling you get when you spot a crack in your siding, a gap around a window, or crumbling caulk around your door. You know water is the enemy, and those little imperfections can quickly lead to bigger, more expensive problems down the road. But the thought of spending a fortune on sealants and hiring a professional? Nobody wants that! The good news is, you absolutely don’t have to. Sealing up your home’s exterior is a manageable DIY project, and you don’t need to empty your wallet to do it right.

Think of exterior sealant as your home’s first line of defense against the elements. According to the U.S. Department of Energy, proper sealing and insulation can save homeowners up to 15% on heating and cooling costs. That’s real money back in your pocket! But where do you even begin? With so many products on the market, it’s easy to get overwhelmed. Don’t worry, we’re here to guide you through the best options that won’t break the bank.

This article is all about finding the sweet spot between quality and affordability. We’re focusing on the best exterior sealants under $20, proving that you can protect your home without sacrificing performance or exceeding your budget. We’ll cover different types of sealants, what they’re best used for, and how to apply them like a pro, all while keeping that price point firmly in mind.

So, grab your caulk gun, put on your DIY hat, and get ready to learn about the best exterior sealants under $20 to keep your home protected and your wallet happy. Let’s get started and show those cracks who’s boss!

5 Best Exterior Sealants Under $20

DAP Alex Plus Acrylic Latex Caulk Plus Silicone

DAP Alex Plus is a solid all-around performer for basic sealing needs. It’s super easy to apply, smooths out nicely with just a wet finger, and cleans up with water. Think filling in gaps around windows, doors, or baseboards – that kind of thing. It’s paintable too, which is a big plus if you’re aiming for a seamless finish. However, don’t expect miracles in high-movement areas, or where it will be constantly exposed to water.

While it does contain silicone for improved flexibility, it’s not as robust as a 100% silicone sealant. It’s more susceptible to cracking over time, especially if the weather gets extreme. Think of it as a dependable choice for indoor or light outdoor use, where ease of application and paintability are top priorities and heavy-duty performance isn’t a must.

GE Silicone 1 All Purpose Silicone Sealant

Looking for something simple and reliable for a variety of tasks? The GE Silicone 1 All Purpose Sealant might just be your answer. This stuff sticks to pretty much anything: glass, metal, plastic, you name it! It provides a watertight seal that’s perfect for bathrooms, kitchens, or even some outdoor projects where you need to keep moisture out. Plus, it’s mildew resistant, which is a lifesaver in damp environments.

Now, it’s not paintable, so you’re stuck with the color you choose (clear, white, black, almond). Also, silicone can be a bit tricky to work with, as it doesn’t smooth as easily as latex caulk. But, with a little patience and the right tools, you’ll have a durable and long-lasting seal. Perfect for those small sealing jobs that need a durable seal.

Loctite PL Premium Polyurethane Construction Adhesive

Loctite PL Premium isn’t technically a sealant in the traditional sense, but it works wonders as one for exterior projects where you need a super strong, waterproof bond. This stuff is seriously tough, designed to glue and seal just about anything to anything! We’re talking siding, trim, landscaping blocks – you name it. It expands slightly as it cures, filling gaps and creating an incredibly tight seal.

Be warned: this adhesive is PERMANENT. It’s not easy to remove once it’s cured. And while it’s paintable, it’s quite thick, and you’ll definitely need to tool it properly for a smooth finish. Also, it has a strong odor, so be sure to use it in a well-ventilated area. If you need a bond that’s going to withstand pretty much anything Mother Nature throws at it, this is your go-to.

Red Devil Duraguard Kitchen & Bath Siliconized Acrylic Caulk

The Red Devil Duraguard Kitchen & Bath sealant is an excellent choice when dealing with moisture-prone areas. It’s primarily designed for kitchens and bathrooms, but it works just as well on the exterior of your home. It’s fairly easy to apply, adheres well to most surfaces, and boasts impressive mold and mildew resistance, which is a huge plus for preventing unsightly stains. It’s also paintable, allowing for a seamless blend with existing décor or exterior paint schemes.

However, it’s not as flexible as a 100% silicone sealant, so it might not be the best choice for areas with significant movement. It will handle the expansion and contraction that your house does in the summer. While it offers decent weather protection, it is best to inspect the areas that you apply the sealant.

Gorilla Waterproof Caulk & Seal 100% Silicone Sealant

The Gorilla Waterproof Caulk & Seal delivers on its promise of creating a watertight seal. This 100% silicone sealant is a fantastic option for both indoor and outdoor use, particularly in areas exposed to heavy moisture. Think around windows, doors, gutters, and even marine applications. It’s highly flexible, so it can handle movement without cracking, and it’s resistant to both mold and mildew.

The downside? Like most silicone sealants, it’s not paintable, and the available colors might be limited. It also requires a bit more finesse to apply smoothly compared to acrylic latex caulk. However, the superior waterproof and weather-resistant properties make it a worthwhile trade-off for projects where durability and protection are paramount.

Why You Need Exterior Sealants Under $20!

Homeownership comes with a constant stream of little maintenance tasks, and keeping water out is paramount. Think about those tiny cracks around your windows, doors, or even along the foundation of your shed. Rainwater can seep in, causing wood rot, mold growth, and even attracting unwanted pests. Addressing these small issues proactively with an inexpensive exterior sealant can save you from much larger, more expensive repairs down the line. Why pay for a professional when you can easily tackle this DIY project and prevent serious damage with a product costing less than your lunch?

Imagine you’ve noticed a little dampness around your basement window after a heavy rain. Ignoring it might seem easier, but water infiltration can slowly degrade the structure of your home and lead to significant health problems. A tube of exterior sealant under $20 is a quick and affordable fix. It creates a waterproof barrier that prevents water from entering, protecting your investment and your family’s well-being. Think of it as an affordable insurance policy against water damage!

Now, you might be thinking, “Are these really effective if they’re so cheap?” The answer is a resounding yes! There are fantastic exterior sealants available for under $20 that are designed to handle the elements. They’re formulated to be weatherproof, flexible enough to accommodate movement, and some even resist mildew and UV rays. Plus, most are super easy to apply with a caulk gun – a simple task that anyone can learn with a quick online tutorial.

Choosing the best exterior sealant under $20 is a smart move for any homeowner. It’s a cost-effective way to prevent water damage, protect your investment, and keep your home healthy and comfortable. Don’t wait for a major leak to force your hand; take a proactive approach and seal those potential problem areas today! You’ll be amazed at how such a small investment can deliver so much peace of mind.

Surface Preparation: The Foundation of a Lasting Seal

Before you even think about squeezing that sealant tube, remember this: proper surface prep is your best friend. Think of it like painting – a lousy base coat ruins the whole job. With sealants, dirt, grime, old caulk, and moisture are your enemies.

Imagine this: you’re sealing around a window frame before a big storm. You rush the job, slapping sealant over a layer of dust and old, cracked caulk. Guess what? The rain finds its way in anyway, rendering your efforts useless and leaving you with a bigger mess to clean up.

So, grab your tools. Scrape away any loose material with a putty knife or scraper. A wire brush can help tackle stubborn debris. Then, thoroughly clean the area with a mild detergent and water. Make sure it’s completely dry before applying the sealant – moisture hinders adhesion like crazy.

Don’t skip this step! Taking the time to properly prepare the surface will dramatically increase the lifespan of your sealant and prevent future headaches (and water damage!). It’s a small investment of time that pays off big in the long run.

Application Techniques: Mastering the Sealant Gun

Alright, you’ve got your surface prepped and your sealant ready to go. Now it’s time to master the art of the sealant gun. Think of it as wielding a paintbrush, but instead of art, you’re creating a watertight barrier.

Picture this: you’re sealing a gap between your siding and a brick foundation. You aim the nozzle, squeeze the trigger, and… a massive glob of sealant squirts out, creating a lumpy, uneven mess. Frustrating, right?

Start by cutting the nozzle at a 45-degree angle to the desired bead size. Practice on a piece of cardboard first to get a feel for the gun’s trigger response. Apply steady, even pressure as you move along the joint. Avoid stopping and starting, as this creates unsightly bumps.

For a professional finish, use a wet finger or a sealant smoothing tool to create a smooth, concave bead. This not only looks better but also helps the sealant adhere better to the surfaces. Remember, practice makes perfect. So, grab that cardboard and start experimenting!

Curing Time and Environmental Factors: Patience is a Virtue

Once you’ve applied your sealant, resist the urge to immediately put it to the test. Sealant needs time to cure, which means it needs time to fully harden and bond with the surrounding surfaces. Rushing this process can lead to cracks, shrinking, and ultimately, a failed seal.

Imagine this scenario: you’ve sealed a crack in your driveway on a sweltering summer day. You figure it’ll dry quickly in the heat, so you park your car on it an hour later. Big mistake! The sealant is still soft, and the tire pressure creates an unsightly indentation, compromising the seal.

Curing time varies depending on the type of sealant, temperature, and humidity. Check the manufacturer’s instructions for specific recommendations. Generally, allow at least 24-48 hours for the sealant to fully cure before exposing it to moisture or stress.

Also, be mindful of the weather forecast. Applying sealant in freezing temperatures or during a rainstorm is a recipe for disaster. Aim for a dry day with moderate temperatures for optimal results. Patience is key – give your sealant the time it needs to do its job properly!

Maintenance and Longevity: Protecting Your Investment

You’ve chosen a great sealant, prepped the surface perfectly, applied it like a pro, and let it cure properly. Now what? It’s time to think about maintenance to ensure your sealant lasts as long as possible.

Think about this: you’ve sealed around your bathtub, preventing water from seeping behind the tiles. Over time, you notice mold and mildew starting to grow on the sealant. Ignoring it not only looks unsightly but also degrades the sealant, eventually leading to leaks.

Regularly inspect your sealant for cracks, peeling, or discoloration. Clean it periodically with a mild detergent and water to remove dirt, grime, and mildew. If you notice any damage, address it promptly. Small repairs are much easier (and cheaper) than replacing the entire seal.

Consider reapplying a fresh bead of sealant every few years, especially in high-stress areas like around windows and doors. By taking proactive steps to maintain your sealant, you can significantly extend its lifespan and protect your home from water damage for years to come. It’s a small effort that yields significant rewards!

Your Guide to Scoring the Best Exterior Sealants Under $20

Hey there, friend! So, you’re on the hunt for an exterior sealant without breaking the bank? Smart move! Exterior sealants are unsung heroes, protecting your home from the elements, preventing costly repairs, and keeping things looking shipshape. But with so many options out there, especially when you’re aiming for budget-friendly picks, it can feel a little overwhelming. Don’t worry, I’ve got your back. This guide is your trusty companion, walking you through the key things to consider so you can snag the best exterior sealants under $20 for your project. Let’s dive in and find the perfect match for your needs!

What Material Are You Sealing? (And is it Moving?)

First things first, think about what you’re actually sealing. Are we talking about filling gaps between siding planks, sealing around windows or doors, or patching up cracks in concrete? Different materials play differently with different sealants. Some sealants are fantastic for wood but might not adhere well to concrete, and vice versa. Figuring this out early will save you a ton of headache (and wasted sealant!) later. Check the product label – it should clearly state which materials it’s compatible with.

And here’s a little secret: consider whether the surfaces you’re sealing are likely to move. Buildings shift with temperature changes, wind, and even settling. If you’re sealing a joint that experiences movement, you’ll need a sealant with good flexibility and elasticity. A rigid sealant might crack and fail, leaving you right back where you started. Look for language like “flexible,” “elastomeric,” or “high movement capability” on the product description. This is crucial when considering the best exterior sealants under $20, as some budget options compromise on flexibility.

Weather Resistance: Can it Handle Mother Nature?

Exterior means exposed to the elements, plain and simple. Your sealant needs to be a tough cookie, able to withstand rain, sun, snow, and temperature swings without cracking, shrinking, or losing its adhesion. Pay close attention to the sealant’s weather resistance claims. Does it say it’s UV resistant? This is super important, especially if you live in a sunny area, as UV rays can break down some sealants over time.

Think about your local climate too. If you live in a region with harsh winters, make sure the sealant is freeze-thaw resistant. This means it can repeatedly freeze and thaw without losing its integrity. High-quality, yet affordable options often boast excellent weather resistance. Checking reviews from people in similar climates can also offer valuable insights. The best exterior sealants under $20 will have clear weather resistance specifications.

Application: How Easy is it to Use?

Let’s be honest, nobody wants to wrestle with a sealant that’s goopy, difficult to apply, or dries too quickly. Application is key, especially if you’re a DIY enthusiast. Consider the sealant’s consistency – is it easy to extrude from the tube or cartridge? Does it spread smoothly? Some sealants are self-leveling, which means they’ll fill gaps and cracks evenly without requiring a lot of tooling.

Also, think about the tools you’ll need. Some sealants require a caulk gun, while others come in squeeze tubes for smaller jobs. Consider the curing time as well. Faster curing times are great if you need to get the job done quickly, but they might give you less time to correct mistakes. Reading product reviews can give you a sense of how easy (or difficult) a particular sealant is to apply. Some of the best exterior sealants under $20 are known for their user-friendly application.

Durability & Lifespan: How Long Will it Last?

No one wants to be reapplying sealant every year. Durability and lifespan are major factors. Look for sealants that are known for their long-lasting performance. The product label should give you an estimated lifespan, often measured in years. Keep in mind that the actual lifespan can vary depending on the climate, the surface you’re sealing, and the quality of the application.

Think about the cost per year of protection. A slightly more expensive sealant that lasts twice as long could actually be the more economical choice in the long run. Read customer reviews to get a sense of how well a sealant holds up over time. The best exterior sealants under $20 strike a balance between affordability and longevity, giving you good value for your money.

Paintability: Will it Take a New Coat?

If you plan to paint the sealed area, make sure the sealant is paintable. Not all sealants are created equal in this regard. Some sealants will repel paint, causing it to bead up or peel off. This can be frustrating and result in a less-than-professional finish. Look for sealants that specifically state they are paintable.

The product label may also recommend a specific type of paint for best results (latex vs. oil-based, for example). It’s always a good idea to test the sealant’s paintability in an inconspicuous area before applying it to the entire surface. Consider how well the sealant’s texture will blend with the surrounding painted surface too. Thankfully, several best exterior sealants under $20 are designed for easy painting.

Color Options: Does it Match Your Project?

While paintability is a great feature, sometimes you just want a sealant that already matches your project’s color scheme. Many exterior sealants come in a range of colors, from classic white and clear to shades of brown, gray, and even black. Choosing a color that closely matches the surrounding surfaces can help to create a seamless, professional-looking finish.

Consider the color of your siding, trim, or other building materials when selecting a sealant color. Keep in mind that some sealants may yellow or fade over time, especially when exposed to direct sunlight. If you can’t find a perfect color match, you can always opt for a clear sealant and then paint over it. When exploring the best exterior sealants under $20, don’t overlook the importance of color.

Price & Value: Getting the Most Bang for Your Buck

Okay, let’s talk money! You’re looking for the best exterior sealants under $20, so you’re already budget-conscious. But remember, the cheapest option isn’t always the best value. Consider the amount of sealant you get per tube or cartridge, as well as its coverage area. A smaller tube might seem cheaper at first, but if you need to buy multiple tubes to complete your project, it could end up costing you more in the long run.

Also, factor in the other criteria we’ve discussed, like durability, weather resistance, and ease of application. A slightly more expensive sealant that lasts longer and performs better could actually be a better value in the long run. Read customer reviews and compare prices from different retailers to find the best deal. With a little research, you can definitely find a high-quality exterior sealant that fits your budget and meets your needs.

FAQs

What exactly *is* an exterior sealant, and why do I need it?

Exterior sealants are like the superhero of home maintenance! They’re special compounds designed to create waterproof and airtight barriers, filling gaps and cracks around windows, doors, siding, and anywhere else your home meets the elements. Think of them as caulk’s tougher, more weather-resistant cousin.

Using an exterior sealant prevents water, air, and even pesky insects from sneaking into your home. This is crucial for preventing water damage (like rot and mold), improving energy efficiency by stopping drafts, and keeping unwanted critters out. A good sealant saves you money in the long run by avoiding costly repairs and lowering energy bills!

How do I choose the right sealant for my specific project?

Choosing the right sealant can feel a little overwhelming with so many options! But don’t worry, it’s simpler than you think. First, consider the materials you’re sealing. Some sealants work best on specific surfaces like wood, vinyl, or concrete. Read the product label carefully to ensure it’s compatible.

Next, think about the weather conditions your sealant will face. If you live in an area with extreme temperatures or lots of rain, look for a sealant that’s specifically designed for harsh climates. Also, consider the joint movement – is it a static gap or one that experiences a lot of expansion and contraction? For joints with movement, you’ll want a sealant with good elasticity.

How important is surface preparation before applying sealant?

Surface preparation is honestly one of the most critical steps for a long-lasting sealant job. Think of it like painting – the paint won’t stick well to a dirty or uneven surface. The same goes for sealant! A clean, dry surface allows the sealant to bond properly.

Before you start, remove any old sealant, dirt, debris, mold, or mildew. You can use a scraper, wire brush, or even a utility knife for this. Then, clean the surface with a mild detergent and water, and let it dry completely. A properly prepared surface is key to a strong and durable seal!

What are the differences between acrylic, silicone, and polyurethane sealants?

Acrylic, silicone, and polyurethane are all popular types of exterior sealants, but they each have their strengths and weaknesses. Acrylic sealants are generally more affordable and paintable, making them a good choice for areas where aesthetics matter. They’re great for lower movement joints.

Silicone sealants are known for their excellent flexibility and water resistance, making them ideal for bathrooms and kitchens. They’re also good for sealing around windows and doors, but keep in mind that they can be difficult to paint. Polyurethane sealants are the toughest of the bunch, offering superior adhesion and durability. They’re great for high-movement joints, like those in concrete, but they can be more expensive and harder to apply.

How can I get a smooth, professional-looking sealant application?

Achieving a professional-looking sealant application is easier than you might think! The key is to take your time and use the right tools. Start by cutting the tip of the sealant tube at a 45-degree angle. This will help you apply a consistent bead of sealant.

Apply the sealant in a smooth, even motion, making sure to fill the entire gap. Then, use a wet finger or a sealant smoothing tool to create a clean, professional finish. Wipe away any excess sealant with a damp cloth. Don’t be afraid to practice on a piece of cardboard first to get the hang of it!

How long does exterior sealant typically last?

The lifespan of exterior sealant can vary depending on several factors, including the type of sealant, the weather conditions, and the quality of the application. Generally, you can expect a good quality exterior sealant to last anywhere from 5 to 10 years, or even longer.

However, it’s important to inspect your sealant regularly for any signs of cracking, peeling, or shrinkage. If you notice any damage, it’s best to reapply the sealant as soon as possible to prevent water damage and other problems. Proper maintenance can significantly extend the life of your sealant!

Is it possible to apply sealant in cold or wet weather?

While it’s generally best to apply sealant in dry conditions with moderate temperatures, sometimes you need to make repairs regardless of the weather. Some sealants are specifically formulated for cold weather application, so look for products labeled as such.

However, avoid applying sealant in wet conditions, as the moisture can prevent it from bonding properly. If you absolutely must apply sealant in damp weather, make sure the surface is as dry as possible and consider using a sealant that’s designed for wet applications. Remember to read the manufacturer’s instructions carefully!

Final Words

Alright, so now you’re armed with the knowledge to find some of the best exterior sealants under $20! Think of the possibilities – you can finally tackle those pesky cracks around your windows, stop that water leak before it causes serious damage, and generally give your home’s exterior a refresh without breaking the bank. This isn’t just about buying caulk; it’s about taking control and protecting your investment with your own two hands.

Go ahead and pick the sealant that feels right for your project and your comfort level. Don’t be afraid to get a little hands-on and take pride in knowing you found an affordable solution that will last. You’ve got this! And remember, a little sealant can go a long way in preserving your home and giving you peace of mind.

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