Understanding Caulks and Foams

Written by Lee Wyatt (last updated January 19, 2018)

Whether you are looking to weatherproof your home, or you simply want to increase its overall energy efficiency then you need to look at using caulks and foams. Before you go out and purchase just any kind of caulking or foam, you need to make sure that you understand the basics. By understanding caulks and foams, you can be sure that you choose the right one for your specific needs. Here is a brief guide that you can use to help ensure you make the right decision.

  • Foam sealants. Foam sealants are primarily used for filling gaps that measure at least 1/2 inch in width. Ideally these are used to fill these gaps, but care should be taken. As these foams cure, they will expand. This means that they will fill up the cracks on their own, but if forced into extremely small areas (such as a window frame) they can end up warping the frame.
  • Kraton-base caulking. This type of caulking will stick to just about anything, you can paint on it, and best of all it comes in a variety of colors. As opposed to foams, this caulking will shrink as it cures. If you need to clean up this stuff, make sure that you use mineral spirits to do so.
  • Styrene-bautadiene rubber. Also called SBR caulking is ideal for working with damp wood, or even treated lumber. This type of caulking is extremely easy to work with, but needs to have plenty of ventilation since the fumes are fairly toxic. If you decide to paint this caulking, make sure that you use paint thinner to clean up any mess.
  • Oil-base painter's caulk. This particular type of caulking is perhaps the least expensive on the market, but will not last as long as the other variants. Typically this caulking will have a life of about three years before you need to replace it. It also isn't very elastic, which means that has a tendency to pull away during cold weather, but is paintable when it is finally cured.
  • Latex caulk. Latex caulking is primarily intended for indoor use only. It goes on very easily, and sticks only to porous materials. In addition, this type of caulking will last for a good 10 years before you really need to replace it, but is not particularly elastic.
  • Silicone caulk. Best known for its use in plumbing this type of caulking can last for around 50 years, if the proper care is taken. However, if you accidentally make a mess, you will need to use a solvent to clean it up. In addition, not all silicone caulking is paintable, and often requires a primer in order to apply it.
  • Acrylic latex. Particularly sticky, this caulking is good for just about all materials, even those which are damp. You can paint this caulking when it is dried, and is especially good for use around windows or doors. Best of all, this caulking can be cleaned up quickly if there is a mess by simply using some water.
  • Butyl-rubber caulk. This caulking will last between three years and ten years, is highly elastic, and exceptionally resistant to water. Unfortunately, this caulking is fairly difficult to work with so care needs to be taken when you do so.
  • Elastomeric copolymers. Another type of caulking that will last for up to 50 years if proper care is taken. This type of caulking can be applied to damp surfaces, and will stick to a large variety of surfaces. If you happen to make a mess, you will need to clean it up with the help of a lacquer thinner. Unlike any other caulking, you can apply this type of caulking in the middle of freezing weather, which can be exceptionally helpful in certain circumstances.
  • Urethane caulks. While this will stick to most surfaces, even brick and stone, it usually requires a primer to apply it. Be aware that while this is a very durable caulking (which can last between 20 and 50 years) it will not stick to damp materials.

Author Bio

Lee Wyatt

Contributor of numerous Tips.Net articles, Lee Wyatt is quickly becoming a regular "Jack of all trades." He is currently an independent contractor specializing in writing and editing. Contact him today for all of your writing and editing needs! Click here to contact. ...

MORE FROM LEE

Getting a Home Improvement Loan

One of the most mind racking parts of any home improvement project is how are you going to pay for it. Before making any ...

Discover More

Cottage Style Home Decorating

If you are looking for a taste of the country, but don't want to appear too rural, then cottage style home decorating is ...

Discover More

Cleaning Burnt Rice

Have you ever noticed just how difficult cleaning burnt rice can be? It often seems like no matter how hard you try, you ...

Discover More

Cordless, Compact, and Powerful! DeWalt's 20-volt drill-driver kit packs a big punch in a small package, with a powerful high-performance motor tucked away inside a compact design. A great addition to the tool chest of any professional or DIYer! Check out DeWalt 20-Volt Drill/Driver Kit today!

More Home Improvement Tips

Saving Energy in Your Home

Saving energy in your home is not just a good idea when you are looking to save some money on your energy bills. By ...

Discover More

Weatherproofing Your Home

Weatherproofing your home is an important task, regardless of what the weather may currently look like. Surprisingly, ...

Discover More

Choosing Energy Efficient Light Bulbs

It is becoming more and more popular to make the home as energy efficient as possible. One of the more common methods ...

Discover More
Comments

If you would like to add an image to your comment (not an avatar, but an image to help in making the point of your comment), include the characters [{fig}] (all 7 characters, in the sequence shown) in your comment text. You’ll be prompted to upload your image when you submit the comment. Maximum image size is 6Mpixels. Images larger than 600px wide or 1000px tall will be reduced. Up to three images may be included in a comment. All images are subject to review. Commenting privileges may be curtailed if inappropriate images are posted.

What is three less than 4?

There are currently no comments for this tip. (Be the first to leave your comment—just use the simple form above!)