Last Updated on May 30, 2022 by Mark Brian
Caulking gives a neat and professional look to the walls, windows, and doors in any home. So, using the best caulk for baseboards is a great way to fill any ugly gaps in a wall, making it durable and beautiful.
Various types of baseboards are used in houses such as natural wood, composite wood, PVC, etc. So, apart from the aesthetic reasons, caulking baseboards also prevents dust buildup and spills from seeping into them. Moreover, it prevents insect infestations in the baseboard gaps as well.
Our Top Picks for Best Caulk for Baseboards – 2022
- Good Adhesion with Wood Baseboards
- 7X Stronger Adhesion
- Neutral Odor
- Lifetime Guarantee
- Mold and Mildew Resistant
- Does not Yellow
Customer’s Reviews for Best Caulk for Baseboards – 2022
White Lightning W13000010 Painter’s Preferred Acrylic Latex Caulk
Adhesion is excellent, and I have often used White Lightning not just as caulking, per se, but as construction adhesive. It also seems to stay flexible for years instead of getting brittle. – Customer’s Review
Gorilla White 100% Silicone Sealant Caulk
This caulk works well, is easy to use and doesn’t crack when dry. The caulk takes a while to dry but when it does it has a hard but slightly spongy consistency, which is fine for silicone caulk. – Customer’s Review
GE Sealants & Adhesives M90006 Supreme Silicone Sealant Caulk
I used to use this brand many years ago, the new formula has NO SMELL! and what a big difference, this is a truly high quality seal, true 100% pure silicone. – Customer’s Review
Red Devil 08465I RD Pro Construction Grade Siliconized Acrylic Sealant Caulk
One large benefit of this product is that it dries to a flat color like grout so it looks much better than a glossy black silicone bead. – Customer’s Review
DAP DYNAFLEX 230 Premium Elastomeric Interior and Exterior Sealant Caulk
Goes on smooth, thick and it made it air proof, waterproof and sun proof!! Love it! It kind of is a nice touch to have it apply as white so you can see exactly where it is, and then turn clear over the next few days. – Customer’s Review
Expert’s Reviews on Best Caulk for Baseboards 2022
1. White Lightning W13000010 Painter’s Preferred Acrylic Latex Caulk
|Material||Rubber Acrylic Latex|
|Liquid Volume||10 oz.|
White Lightning acrylic caulk is easy to apply and flows seamlessly. Its beads stick the baseboard perfectly with the wall. Also, it is flexible with a curing time of just 30 minutes. It is a good option for small gaps that require immediate filling.
Another good feature of this polymer acrylic caulk is its paintability. You can paint it in any color or keep its original white one. However, its correction window is small after application. So DIYers choose to apply it before painting the baseboards.
2. Gorilla White 100% Silicone Sealant Caulk
|Type||100% Pure Silicone|
|Resistant||Mold and Mildew Resistant|
|Curing Time||24 Hours|
Gorilla is the best silicone caulk out there for baseboards. It requires minimal pressure to apply and glides on the baseboards smoothly. Although the manufacturer has endorsed 30 minutes curing time, thorough curing requires at least 24 hours.
It is 100% waterproof and does not yellow over time like other silicone caulks. This makes it a great fit for damp places. Moreover, it is mildew and mold resistant as well. However, it cannot be painted. Also, its adhesion is not good for brick, masonry, and cement.
3. GE Sealants & Adhesives M90006 Supreme Silicone Sealant Caulk
|Adhesion||7X Stronger Adhesion|
GE sealant is also a silicone caulk with more adhesion to porous surfaces like brick or cement. It is flexible and does not discolors metals or yellows over time. Moreover, it is crack proof to keep all moisture out.
This silicone sealant is resistant to 50% ground movements as well. However, it dries from clear to white so apply it to the bottom of baseboards. Using thin beads of the GE sealant ensures compact binding and waterproof adhesion.
4. Red Devil 08465I RD Pro Construction Grade Siliconized Acrylic Sealant Caulk
|Dimensions||2 x 2 x 11.25 inches|
Acrylic latex with silicone is the best combination for waterproofing and painting baseboards, at once. Red Devil siliconized acrylic sealant caulk for flexibility and waterproofing. Moreover, its “emulsion polymer” increases adhesion to porous surfaces, wood, and PVC.
Due to its water based formula, it has less odor and dries fast. It is available in four different matte colors. However, the color may fade a bit after drying.
5. DAP DYNAFLEX 230 Premium Elastomeric Interior and Exterior Sealant Caulk
|Gap Filling||Up to 2 inches|
|Curing Time||2 hours|
The Dynaflex elastomeric sealant is the best caulk for baseboards if there are huge gaps. It can expand up to 500% and fill up to 2 inches gaps. Old homes have a lot of ground shifting and uneven floors, so this sealant is perfect for leveling and joining baseboards. The initial curing time is 2 hours, but it can take up to 5 to 7 days to clear from the initial white color. The best thing about this caulk is that it is paintable.
Types of Baseboard Caulks
There are a few options for filling and attaching the baseboards. Window or plumber putty is the cheapest option, but it is prone to cracks and is not long lasting. This makes caulk an optimal choice.
However, a number of commercial and industrial grade caulks are marketed, it is crucial to know their performance level. For example, refractory caulk is an excellent choice for the fireplace area due to its heat resistance but it is not a good option for baseboards.
The best caulk for baseboards is either silicone or acrylic latex, depending on the requirements where it is applied. Polymer acrylic latex or painter’s latex is versatile, while silicone caulk is more durable.
Often referred to as acrylic latex, is flexible and has the best adhesive qualities. It has the fastest curing or drying time among all other caulks. Moreover, it is paintable and comes in a variety of colors as well. Acrylic or oil based paints can be easily used with the latex caulk.
Pure Silicone Caulk
Pure silicone is 100% waterproof and gives lifetime durability. Moreover, silicone has the most elastomeric properties that are useful for filling big gaps. It is the best caulk to use in damp areas as it is also mildew and mold resistant. However, its curing time is at least 24 hours, and it is prone to yellowing over time.
Latex with Silicone Caulk
Latex with silicone caulk combines the best of two worlds. It is waterproof as well as paintable. Also, the elasticity is better than simple latex caulks. So, it does not crack over the years. Moreover, it is a water based, environment friendly product than pure silicone caulk.
Things to Consider While Buying the Best Caulk for Baseboards
A number of factors can help you decide the best caulk for baseboards in your home or office. For example, if it is a damp area like a kitchen or bathroom, silicone caulk will be perfect. On the other hand, latex caulk will be the best if baseboards are painted later on. So, consider the following points before buying caulk.
Choosing a caulk from a trusted brand will benefit you in the long term. A good quality caulk is durable but a bit expensive compared to its cheaper counterparts. DAP, Gorilla, Red Devil, and Sashco are some of the best brands for baseboard caulk.
Houses shift or set in overtime as a result of ground movements. This makes significant gaps between walls and flooring, or in other cases, the floor can be uneven. It is fairly common in older houses, so a flexible or elastomeric caulk is the best for it. For instance, ⅜ inches of caulk elasticity is considered good.
Ease of Use
Applying caulk can become messy in no time. So, how easily a caulk can be applied should also be considered. The standard way to test is by cutting the nozzle and applying a test bead on the wall before use.
Curing or drying time is the time required by the caulk to set and harden. Latex caulks are the fastest to dry and take only 30 minutes. However, silicone caulks take up to 24 hours to dry thoroughly.
Silicone caulks can be deceptive as they appear dry to touch within an hour but are not set thoroughly. In contrast, latex caulk sets very rapidly. After 2 to 3 minutes of application, latex caulk has to be scraped to remove in case of a mistake.
A good latex or silicone latex baseboard caulk can last up to 25 to 40 years. Silicone caulk can last a lifetime is the most durable.
It is important to consider if the baseboards are applied before or after paint. Pure silicone comes in white and clear colors, but it cannot be painted. Contrarily, acrylic latex caulk is paintable. So, silicone caulk should be avoided in living rooms as it yellows as time passes.
The kitchen and bathroom are exposed to water and dampness. So, there is a chance of molds and mildews growing on the fringes of the wall. Therefore, silicone or silicone with latex caulk works as a waterproof material. On the other hand, latex caulk is not waterproof at all, so it should be avoided in damp places.
Different materials have variable porosity which affects the adhesion of the caulk. Acrylic latex has the best adhesion for masonry, cement, and brick walls. While silicone caulk works great with wooden walls.
Pure silicone caulk has a strong odor and can be difficult to work with without proper gear. On contrary, latex caulks are water based and have no or mild odor. A third option is a silicone with latex caulk, and it has a tolerable odor.
Steps to Apply Caulk to Baseboards
Anyone can apply perfect caulk to baseboards with the right tools and a little practice. As a general rule, caulk is usually applied to the bottom of the baseboard and the top is nailed to the wall for a better finish. Following are some steps to apply caulk to baseboards:
- Get a good caulking gun. It can help with stability during the even application of the caulk.
- Before applying caulk to the baseboards, vacuum the area and remove as much dust as you can. Because if it will be trapped between baseboards it can give way to dust pockets and maybe insects as well.
- Use a low tack painter’s tape as a marking within which the caulk should stay. Avoid using masking tape for this purpose.
- Cut the nozzle at 45 degrees and keep it small. You can enlarge it later on as per the need.
- Apply a test bead to the baseboard to check the consistency and flow of the caulk.
- Smooth the caulk after applying with a wet finger.
- Apply the caulk with a steady speed and consistency. Caulk can set quite fast so make sure to clear the area of any obstacle to have maximum access.
- Remove the painter’s tape before the caulk has completely dried to avoid lifting it.
Frequently Asked Questions (FAQs)
Should you caulk baseboards before or after painting?
For seamless finishing, applying caulk to baseboards before painting them is recommended. Also, it gives a chance to correct any mistakes, if they occur. However, if you are a professional with a steady hand for caulking then it can be done after painting.
Can you caulk over old caulk on baseboards?
Yes, you can caulk over old caulk on baseboards after cleaning them of any dust and oil. Also, make sure that the old caulk is dry and extend the new caulk to caulk free area of the wall to adhere well.
How thin should caulk be?
A bead or ¼ inch of the caulk is sufficient to apply to baseboards. It shrinks upon drying and makes a tight seal that improves the life of baseboards.
Choosing the best caulk for baseboards can give a positive look to your walls and keep them as new for years to come. We have tried to cover all aspects of caulking the baseboards. If you have any queries, feel free to ask. We will be more than happy to help.