best caulk for aluminum windows

Best Caulk For Aluminum Windows: 5 Great Options

Aluminum windows are a popular choice for homeowners because they’re durable, low maintenance, and affordable. 

The problem is that aluminum windows can be difficult to seal properly, which means water can easily seep into the frame and cause rot or mold. 

In that case, you’ll need to use a good quality caulk to seal the cracks and joints around your windows. The question is, what is the best caulk for aluminum windows?

Throughout this post, we’ll take a look at some of the top caulks for aluminum windows, along with some buying guides and FAQs.

EDITOR’S CHOICE

Best Overall
71s05zAFLRL. AC SL160

Gorilla Silicone (‎8060002)

Best Value

GE Silicone Sealant (GE5050)

Most Affordable
61Vqci bTKL. AC SL160

GE Silicone Caulk (‎GE5000)

Top 5 Best Caulk For Aluminum Windows Review

There are many different types of caulks and sealants on the market, but not all of them will work well with aluminum. Below are five of the best sealant for windows that are safe to use with aluminum.

1. Gorilla Silicone Sealant Caulk (‎8060002)

71s05zAFLRL. AC SL500

Gorilla White 100% pure silicone caulking is perfect for a variety of sealing needs around the home. This is a 10-ounce cartridge that is white in color. It’s especially good for aluminum windows, as it forms a strong and durable seal that won’t peel or crack over time. Plus, it’s easy to use, just apply it to the surface and wait for it to dry.

It is perfect for sealing gaps or cracks between two surfaces, much better than polyurethane caulk for this task, and can be used on a variety of materials, including windows, doors, kitchen appliances, bathrooms fixtures, and more. Gorilla caulk is also great for automotive or marine applications.

Gorilla silicone sealant caulk is an excellent choice for those who are looking for a waterproof sealant for aluminum windows. It is more durable than latex caulk, can be used both indoors and outdoors, and it is 100% waterproof. It dries quickly so that you can get back to your projects in no time.

This caulk is known for its superior quality when it comes to caulking aluminum windows. It won’t yellow, shrink or crack over time, making it a long-lasting solution for your caulking needs.

Pros:

  • 100% silicone sealant
  • Bonds to a variety of surfaces
  • Waterproof & Dries quickly
  • Superior quality for caulking aluminum windows
  • Won’t yellow, shrink or crack over time

Cons:

  • It is not paintable

Verdict:

If you are looking for a quality sealant that is specifically designed for caulking aluminum windows, then Gorilla Silicone Sealant Caulk is a perfect choice. It is 100% silicone, waterproof, and dries quickly. Plus, it won’t yellow, shrink or crack over time, making it a long-lasting solution.

2. GE Advanced Silicone Caulk (‎GE5000)

61Vqci bTKL. AC SL500

GE5000 advanced silicone caulk is perfect for use on aluminum windows. It dries quickly and cures to a clear, tough finish, making it ideal for both indoor and outdoor applications. GE silicone sealant is also mold and mildew resistant, making it a great choice for areas that are prone to moisture.

This GE Sealants 10.1oz tube is a great product to help keep your aluminum windows watertight, and the clear color allows it to blend in with your window or door frame. The sealant sets quickly, forming a durable and waterproof seal that’s resistant to extreme weather conditions.

If you’re looking for a reliable way to seal your aluminum windows, GE caulk is the perfect option. It provides 40% more flexibility than other brands, and the 5X stronger adhesive means it’ll stay put no matter what. Plus, it’s easy to apply, so you’ll be able to get the job done quickly and efficiently.

GE advanced silicone caulk is designed to be rain-ready in as little as 30 minutes. Whether you’re dealing with light rain or a downpour, GE’s caulk can handle the weather.

This stuff is shrink and crack-proof, meaning that it won’t warp or split no matter how much the weather fluctuates. So if you’re looking for a long-lasting seal that can take a beating, GE’s caulk is definitely worth a try.

Pros:

  • Perfect for use on aluminum windows
  • Dries quickly and cures to a clear, tough finish
  • Mold and mildew resistant
  • Provides 40% more flexibility than other brands
  • 5X stronger adhesive

Cons:

  • Intended to be used where the paint will not occur

Verdict:

If you’re looking for a high-quality sealant to use on your aluminum windows, GE’s Advanced Silicone Caulk is definitely worth a try. It dries quickly and cures to a clear, tough finish, making it the best caulk for exterior windows and doors as well as interior ones.

3. Red Devil Siliconized Acrylic Caulk (‎0846)

31CggyrpWmL. AC SL500

This Red Devil caulk is perfect for repairing and sealing aluminum windows. It is a siliconized acrylic caulk that will provide a long-lasting seal. The white color will help it blend in with the window frame.

It has a very elegant and smooth finish, making it perfect for those who want their windows to look as good as new. Not only does it have a great finish, but it’s also extremely user-friendly, making it the perfect choice for anyone who wants to quickly and easily fix up their aluminum windows.

This is an advanced siliconized acrylic formula that reduces drafts and cold spots to increase energy efficiency. It is designed to provide a weathertight seal around window frames and sashes, and its easy-to-use application makes it perfect for the DIY homeowner.

This siliconized acrylic caulk performs better than acrylic latex caulk and is a great choice for anyone looking to do larger or multiple jobs. It comes in a 10.1 oz cartridge and is manufactured in China. It has excellent adhesion to many surfaces. It can be painted, making it perfect for both interior and exterior caulk applications. Plus, it cleans up easily with water, making it a breeze to use.

Pros:

  • Siliconized acrylic caulk
  • It blends in well with window treatments
  • Paintable & easy to use
  • Weathertight seal around window frames and sashes
  • 10.1 oz cartridge & excellent adhesion to many surfaces

Cons:

  • Eventually, it may crack

Verdict:

Ultimately, this caulk is a great option for anyone who wants an easy-to-use sealant that will help them fix up their aluminum windows quickly and easily. It may eventually crack, but overall it is a reliable choice that will provide a weathertight seal around.

4. GE Caulking For Windows (GE5050)

The GE GE5050 silicone sealant is a great choice for those looking to seal aluminum windows. The silicone-based formula provides a watertight seal and helps to prevent rust and corrosion. The metallic gray color is perfect for matching most aluminum finishes.

If you are looking for a quality caulk for your aluminum windows, then GE caulk is a great option. This product weighs 10.1 ounces and has a liquid volume of 9.8 fluid ounces. It is made to provide a great seal for your windows.

This caulk is sunproof, freezeproof, and flexible, meaning that it will not shrink, crack or break down over time. GE caulk cures quickly, with just 30 minutes of dry time and a full cure in just 24 hours.

It is able to withstand temperatures from -60 degrees Fahrenheit to 400 degrees Fahrenheit, making it ideal for a variety of climates. Additionally, its specific gravity is 1.05, making it heavier than many other caulks on the market. This helps it to stay in place and prevents it from dripping. 

This is also effective in bonding granite, masonry, metal, aluminum, and stainless steel. GE caulk is easy to apply and dries quickly, making it an ideal choice for all your weatherproofing needs. GE caulk is also mold and mildew resistant, which keeps your window repair looking new for longer.

Pros:

  • Withstands a wide range of temperatures
  • Bonds a variety of materials, such as aluminum 
  • Mold and mildew resistant
  • 10.1 ounces in weight
  • 9.8 fluid ounces in volume
  • Sunproof, freezeproof, and flexible

Cons:

  • Not compatible with plastic and glass

Verdict:

GE silicone caulk is a great choice for those looking for a quality sealant to protect their aluminum windows. The silicone-based formula is sunproof, freezeproof, and flexible, making it ideal for a variety of climates. Although it is not compatible with plastic and glass, GE caulk is great for bonding granite, masonry, metal, and stainless steel.

5. GE Supreme Silicone Caulk (M90015)

61e5O1sptQL. AC SL500

The GE M90015 is a silicone window and door caulk that is meant to provide a strong and durable seal. The sealant comes in white, so it can be easily matched to most replacement window and door frames. It is also meant to be resistant to extreme temperatures, making it a good option for climates that have wide temperature variations.

It is a tenacious adhesive that bonds well to the window frame, and it has excellent weather resistance. This is weightless and comes in a liquid volume of 10.1 fluid ounces. It also dries quickly, so there is little downtime between the application and protection from the elements.

GE supreme silicone caulk is a great product that is made in the United States. It is a great option for those who are looking to seal their aluminum windows. The package dimensions are 18″ L x 18″ W x 21″ H, making it easy to store and use.

This is the perfect choice for sealing aluminum windows. It creates a durable seal that’s weatherproof, sun-proof, and freeze-proof. Plus, it stands up to tough weather conditions such as snow, rain, hail, and more.

GE’s Silicone Rubber Sealant is perfect for a wide variety of applications, both indoors and outdoors. This sealant is incredibly versatile, with a performance temperature range of 40 degrees to 100 degrees Fahrenheit. It cures in just 24 hours, so you don’t have to wait long to see the finished result. Plus, it only takes 30 minutes to apply, making it simple to use.

Pros:

  • It comes in a liquid volume of 10.1 fluid ounces
  • Little downtime between the application
  • The package dimensions are 18″ L x 18″ W x 21″ H
  • Perfect choice for sealing aluminum windows.
  • It creates a durable seal that’s weatherproof

Cons:

  • The container tube is of poor quality

Verdict:

Overall, GE’s Silicone Rubber Sealant is a great product that can be used for a variety of applications. Plus, it has a performance temperature range of 40 degrees to 100 degrees Fahrenheit, so you can use it for a variety of projects. The only downside is that the container tube is of poor quality. However, this is still a great sealant that is worth considering.

Tips For Choosing The Best Caulking For Windows Aluminum

Tips For Choosing The Best Caulking For Windows Aluminum

Not all caulks are created equal, and it’s important to choose the right caulk for your needs. Here are some tips for choosing the best caulk to seal windows with aluminum.

Compatibility

Make sure the caulk you choose is compatible with both the material of the window frame and the type of sealant you are using. Some caulk specifically designed for use with aluminum windows, while others may not be as effective.

Weather Resistance

Choose a caulk that is weather-resistant and can stand up to the elements. This is especially important if your windows are exposed to the outdoors.

Appearance

Consider the appearance of the caulk before you choose it. Some caulk is clear, while others have a white or off-white color. It’s important to pick one that will match the appearance of your windows and surrounding trim.

Adhesion

In order to find the best adhesive for window installation, the caulk you choose should also have good adhesion so that it will stay in place and not peel off over time. However, it should also be easy to remove if needed.

Temperature Range

Choose a caulk that has a wide temperature range so it can be used in both warm and cold air climatic conditions. This will help ensure that it stays effective no matter what the weather is like.

Size

The caulk you choose should be the right size for your needs. Some caulks come in a cartridge form, while others come in a squeeze tube. Make sure to pick one that is easy to use and will fit the size of your window frame.

Mold And Mildew Resistant

Choose a caulk that is mold and mildew resistant to help keep your windows looking clean and fresh. Moreover, this will help keep your window frame from becoming damaged by these types of organisms.

Drying Time

Make sure the sealant dries quickly so you can get back to using your window as soon as possible. Some caulks take hours or even days to dry, which can be inconvenient.

Brand

When it comes to caulking, brand name matters, choose a brand that you trust and has a good reputation. This will ensure that you get a quality product that will last.

Budget

Consider the price of the caulk before you buy it. Some caulks are more expensive than others, but it’s important to choose one that is worth the investment.

Durability

The caulk you choose should be durable and able to withstand frequent use. This will help ensure that it lasts for a long time. So, consider the durability of the sealant before you make a purchase.

Ease Of Use

The caulk you choose should be easy to use so that you can apply it quickly and easily. This will help save time and ensure that the window is properly sealed. Therefore, consider the ease of use before you make a purchase.

So, the best window caulk with aluminum depends on a variety of factors, including the type of sealant you’re using, the material of the window frame, the weather conditions, etc.

How Do You Caulk Around Aluminum Windows?

How Do You Caulk Around Aluminum Windows

Caulking is an important part of window maintenance, and it’s especially important to do a good job around aluminum windows. Here’s how to caulk around aluminum windows:

Clean the Window Frame and Caulk Joints

Make sure the window frame is clean and free of any dirt, dust, or debris. This will help ensure a good seal between the caulk and the frame. So, use a clean cloth to wipe down the frame before you start caulking.

Apply Caulk to the Joints

Squeeze some caulk onto your finger and apply it to the joints between the window frame and the caulk. You can also use a caulking gun to accomplish this task. Make sure to fill in all of the gaps for a proper seal. You may need to use a backer rod if the gap is wide.

Smooth Out the Caulk

Use a damp cloth or your finger to smooth out the caulk. Make sure it’s evenly applied, and there are no bumps or ridges. To do this, you may require a putty knife. Be certain there is no excess caulk.

Let the Caulk Dry

Leave the caulk to dry for several hours before using the window. Once it’s dry, you can safely open and close the window. However, avoid touching the caulk until it’s fully dry.

Repeat as Necessary

If needed, you can repeat these steps to ensure a good seal around your aluminum windows. Just make sure to wait for the caulk to dry before using the window again.

So, these are some tips on how to caulk around aluminum windows. By following these steps, you can create a strong and durable seal that will protect your windows from the elements.

FAQ’s

The following are some common questions regarding the best window caulking.

Does caulk stick to aluminum?

Caulk will stick to aluminum, but it’s important to clean the surface first so that there is a good bond. Make sure to remove any dirt, dust, or debris from the window frame before caulking.

What kind of caulk is best for exterior windows?

There is a variety of caulks that are suitable for exterior window installation, but it’s important to choose one exterior caulking that is weather-resistant and durable. If you are looking for the best exterior caulk, make sure it is designed for outdoor use.

How do you remove old caulk from windows?

If you need to remove old sealant from windows, use a caulk remover or a scraper to scrape it off. Be careful not to damage the aluminum window frame while removing the caulk.

How to seal windows with silicone?

To seal windows with silicone, first make sure the window frame is clean and free of any dirt, dust, or debris. Apply a layer of silicone to the aluminum frame and smooth it out with your finger. Let the silicone dry for several hours before using the window.

Should you caulk inside of windows?

Caulking the inside of windows is not generally necessary, but it can help protect the window from moisture and debris. If you choose to caulk the inside of your windows, make sure to use a weather-resistant caulk that is designed for indoor use.

Final Thoughts

Caulking your windows is an important part of regular window maintenance. By following these simple steps, you can identify the best caulk for aluminum windows and create a durable and weather-resistant seal.

Remember to let the caulk dry before using the window again. We hope this guide was helpful. If you have any questions, please feel free to contact us. Thanks for choosing us.

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