Best Caulk Reviews 2018

Caulk is simply a home improvement hero. No doubt about that. No matter how skilled you are, or how good your construction materials are, there will always be small gaps and cracks that will need sealing, especially around the windows, gutters, concrete, molding, roof, or plumbing. The right caulk will do the job and bridge all those gaps like they never existed. To help you get the right one for your project, we have researched five top brands on the market and have chosen one great caulk from each one of them. If the ones we have featured are not exactly what you are looking for, remember each of these brands has other options available.
Overview
PROS
CONS
Our Top Choice
Great Stuff Gaps and Cracks Insulating Foam Sealant
Great Stuff is all about caulks and sealants. Its Gaps and Cracks Insulating Foam Sealant forms a permanent air-tight seal in most construction materials.
Permanent weather-tight seal. Good adhesion to building materials. Can be used indoors or outdoors.
A bit pricey because of the quality make.
Best Value
3M Black Super Weatherstrip Adhesive Tube
3M addresses challenges of everyday living with a childlike curiosity. The 3M Black Super Weatherstrip Adhesive Tube is a strong rubbery adhesive that can withstand vibrations.
Comes with 2 pairs of gloves. Can hold rubber and paper gaskets. Good value for money.
Cannot work on concrete and metal.
Dicor EPDM Self-Leveling Sealant for Manufacturers
Since 1984, Dicor has been a leader in the supply of premium roofing products. Its Self-Leveling Sealant for Manufacturers helps create a watertight seal.
Works on a number of materials. Remains flexible even after drying out. UV stabilized.
A bit pricey because of the sealant’s capability.
Flex Seal Liquid Rubber Sealant
Flex Seal has been in the businesses of sealants for many years, striving to bring the best products that truly work. The Liquid Rubber Sealant seals out moisture, water and air.
Stops vibrations and noise. Prevents rust and corrosion. Chemical and mildew resistant. Affordable.
Doesn’t work well on metal and PVC.
Dap Alex Plus Acrylic Latex Caulk with Silicone
Through acquisition and innovation, Dap continues to expand its product base. The Alex Plus Acrylic Latex Caulk with Silicone is great for caulking around door frames and windows.
Affordable. Secure and sturdy construction. Excellent adhesion to wood, metal and ceramic.
Not long-lasting.

(Updated )
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How Do I Choose the Best Caulk?

A trip to your local home improvement store for a tube of caulk can be a confusing experience because not only do you have to select from a myriad of caulking gun models, but you also have to choose from the several different types of caulks available. The words “caulk” and “sealant” are often used interchangeably, and, even though both products serve the same purpose i.e. to fill gaps in building materials and to keep air and water at bay, the significant difference between the two is that the former works well in spaces that require minimal expansion and contraction, whereas the latter is great for areas that are prone to expansion and contraction.

Depending on how much caulk is used, you should ideally allow the sealant ointment to dry and then sand the surface—preferably with an orbital sander—before painting over it with a top of the line paint sprayer. Before heading out shopping for the best caulk, it is important to consider the materials you will be working with because some sealants adhere to certain materials better than others. Next, you should also consider how easy the caulk is to apply given that some spills can be easily cleaned up with water while others will require the use of solvents.
Price
Caulking can be an expensive task because you may have to caulk your exteriors in the spring and re-caulk tubs and showers that may have been affected by mildew. The price of caulk for the most part depends on the type you need. Latex-based sealants are the most common and are inexpensive compared to silicone caulk. The price of caulk will also depend on the amount that comes in each tube, so if you just need to use it for small fixes, buying a large tube is certainly not recommended. This type of sealant is inexpensive for the most part, so there’s no reason to buy cheap caulk because, after you’ve used it, you will have a bigger problem to deal with than when you first started.

There are a few caulk manufacturers that include extras along with the package such as gloves and quick stop straws, saving you money from buying them separately. If you have a large caulking task to deal with, it is wise and cost efficient to buy sealant in packs of two or three, which not only saves you a few dollars but also saves you trips to the hardware store. But to give you a rough idea of prices you can expect to see on the shopping trail, caulk can cost anywhere between $15 for a 20-ounce tube to $150 for a pack of 20 or more tubes.
Features
Before you set out to buy the best caulk, you should determine the type of sealant you need to get the job done right.

That said, here are a few factors to consider when going through the myriad of options:
  • Type –Caulk is often made from latex or silicone or a mix of the two
  • Amount –This is the amount of sealant that comes in a single tube and is generally measured in ounces
  • Accessories –Some caulk manufacturers include handy accessories along with the package such as gloves
  • Shelf Life –Although it may be tempting to buy a pack of two or three tubes, remember that caulk does expire
  • Brand –Buying from a reputable brand ensures that you get high-quality sealant
Construction and Design
There are different types of caulk available for kitchens, bathrooms, molding, gutters, interior and exterior jobs, and more. There are four different types of caulk available namely butyl, silicone, latex, and polyurethane.
  • Latex sealants are the most preferred choice as they are water soluble, making them easy to use and clean up. Their best use is on highly-porous surfaces such as wood and wallboard and can be used both on the inside and outside.
  • Butyl-rubber caulk is a great choice for tasks such as flashings, chimneys, and gutters and can be used in extremely wet conditions.
  • Silicone caulk is extremely flexible but does require solvent such as alcohol for cleanup. Another aspect about silicone caulk worth mentioning is that in most cases it is not paintable and is not a good fit for redwood, cedar, masonry, or stone.
  • Polyurethane caulk can be difficult to apply but boasts a very high-tensile strength, making it compatible with almost any type of surface including wood, concrete, glass, plastic, and metal.
Apart from the types of caulk mentioned above, there is also an array of specialty caulks—such as adhesive caulk and concrete caulk—that are each designed for a specific purpose.
Performance and Ease of Use
Some caulks require a caulk gun for application, while others are available in squeeze tubes or aerosol containers. Squeeze tubes of caulk are an ideal choice for small tasks but completing large projects efficiently does require a good caulk bead with gun. If you’re going to be applying caulk in tight areas, narrow-tipped aerosol cans prove helpful. If you’re going to be caulking in cold weather, you may want to use silicone caulk but ensure that you store it indoors before use to keep it warm and allow it to flow smoothly. Although silicone caulk is extremely durable, it can go bad at some point. The shelf life of this type of caulk is shorter than other caulks. Therefore, silicone caulks might harden in an unopened tube if more than a year old. If the caulk does turn hard, you may want to try warming it up until it flows out, but this doesn’t guarantee that it will offer the same sealing properties as when it was in its youthful phase.

What is the Best Caulk?

Basically, companies are making silicone or latex caulks, each of which is suited for a specific purpose. The caulk you would use to seal fabric would not work well on concrete. While there are all-purpose models, it’s wise that you first understand what your project entails so that you can make sure you get the right one. But don’t worry because we have all the information you need in our review. We have considered factors such as type, application, formulation, and, of course, the size of the tube/can.
Our Top Choice
The Gaps and Cracks Insulating Foam Sealant is made to provide a permanent air-tight seal, minimizing insect infestation and drafts in your home. Need something to keep out drafts from your entrance ways? Take a look at Great Stuff’s Window and Door Insulating Foam Sealant.
Great Stuff Gaps and Cracks Insulating Foam Sealant – Creates Permanent Weatherproof Seal

Great Stuff Caulk – Set of 3 16 oz Cans


Features
Great Stuff is one of the most renowned producers of caulks and sealants, helping home improvement enthusiasts and professionals alike do it like pros! If you are ready to do neat work and dial up the speed of your project, then you are ready to use one of their insulating foams.

The Gaps and Cracks Insulating Foam Sealant is made to attack all those air leaks in your home with a vengeance. It’s a foam is designed to spray into cracks and gaps up to 25 mm (1”) in diameter, expanding to bridge the shapes. And do you know what the results are? A long-lasting and water-resistant seal!

Retailing at around $36.14, you can get this spray caulk in 3 packs of 16 ounces or just a single pack of 20 ounces for $15.25. In case you want another sealant instead, check out other models we came across during our research below:
  • GREAT STUFF Fireblock 12 oz Insulating Foam Sealant
  • GREAT STUFF PRO Window & Door 20 oz Insulating Foam Sealant
  • GREAT STUFF Pestblock 12 oz Insulating Foam Sealant
Best Value
The 3M Black Super Weatherstrip Adhesive Tube is an excellent, strong adhesive made to hold paper, rubber and cork gaskets in place. It can withstand extreme temperatures, vibrations, grease and oil. If you were looking for a waterproof caulk that dries clear, 3M has many, such as the great Marine Grade Silicone Sealant.
3M Black Super Weatherstrip Adhesive Tube – Adhesive Caulk Bonds Fabric to Metal

3M Caulk 08008 – 2 Weatherstrip Tubes w/ Latex Gloves


Features
3M is a major brand based in the US, best known for adhesive dispensers and sealants, converter solutions, fasteners, masking tapes and fire-stopping products. It has been in this industry for ages, producing quality products to make life easier.

The 3M Black Super Weatherstrip Adhesive Tube is a unique caulk used to bond weatherstripping to sun roofs, moon roofs, T-tops, trunks and car doors. It is also excellent for holding paper, rubber or cork gaskets in place whenever you are doing installations. If you get this adhesive sealant you will also receive a pair of strong, flexible gloves.

This caulk is available for around $19.19 for 2 packs of 5 oz tubes and a pair of gloves. However, if you wish to get just the 5-ounce tube without the gloves you can choose that option on Amazon for $10.44.

Since 3M is known for quality products, we thought that you would appreciate knowing about a few more sealants it offers so that you can compare them and get just the right fit. Some of which we came across include:
  • 3M 08987 General Purpose Adhesive Cleaner, 15 oz
  • 3M 21210 Super 77 Spray Adhesive
  • M 08061 Plastic and Emblem Adhesive Tube - 5 oz
  • 3M Super 77 Multi-Purpose Adhesive, 4.37-Ounce
The Self-Leveling Sealant by Dicor can work on many materials, including Galvan, vinyl, wood, mortar and aluminum. The package comes with 12 10.3-ounce tubes. Don’t need so many? Dicor’s 501LSW-1 Lap Sealant, sold in individual tubes, also offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal, and concrete.
Dicor RV Rubber Roof Self-Leveling Sealant - UV Stabilized, 10.3 Ounce Tube, White

Dicor Caulk 502-LSW - Box of 25 Tubes


Features
Dicor is a well-established brand in the manufacturing industry, providing quality components for roofing repair and wheel covers. Each of its products is tested for RV use and quality so that it can provide value to customers.

The Self-Leveling Sealant by Dicor is designed for use with some TPO roofing and single-ply EPDM. You can use it to fill joints and voids around penetrations, pipes and vents for an air-tight fit. The unique thing about this sealant is that it is UV stabilized in order to prevent discoloration and deterioration.

The Self-Leveling Sealant is available at around $179.99. However, this price is not for one tube, but 25 of them. This means that if you have a large project, you can make a one-time payment and get enough sealant to complete the job. In case this is expensive for you or just want a different caulk, here are more options that you could also get on Amazon:
  • Dicor 501LSW-1 Lap Sealant - 10.3 oz
  • Dicor 551LST-1 Rubber Roof Kit
The Flex Seal Liquid goes on smooth and covers fast, sealing out moisture, air and water on rubber. It’s non-toxic and works to prevent rust and corrosion on materials. You may also want to check out Flex Seal’s spray products – they offer an easy way to spray liquid rubber into cracks and holes, creating a flexible, watertight coating.
Flex Seal Liquid Rubber in a Can – Comes in 3 Colors, Different Can Sizes Also Available

Flex Seal Caulk LFSBLKR16 – Black, 16 Ounce


Features
Flex Seal does one thing and does it well – it produces some of the best sealants in the market! From the liquid type to the foam type to the gel type, you would literally find any sealant you want for any application by Flex Seal.

The Liquid Rubber Sealant is just one of the examples that show the undying commitment of Flex Seal to produce nothing but quality products. From the many customer reviews, we can clearly see why it’s a #1 Best Seller on Amazon. You can brush it, dip it or roll it on anywhere you want to seal, especially on rubber and vents. The caulk is non-toxic and non-hazardous, and works to prevent corrosion and rust, in addition to providing an airtight seal.

This sealant retails at around $14.99, which is a good bargain for a 14-ounce can. You can get it on Amazon in three different colors: black, clear and gray. In case you prefer a different sealant by Flex Seal, check out more options we came across on Amazon during our research:
  • Flex Seal As Seen on TV Liquid Rubber Sealant in a Can - Variety of Colors
  • Flex Seal Black
  • Flex Seal Brite
  • Flex Shot White
The Alex Plus Acrylic Latex Caulk with Silicone is made for household use, including sealing gaps on door frames and windows. Need caulk for doors and siding? Check out Dap’s 100% silicone rubber sealant that provides waterproof and mildew-resistant protection, and it comes in your choice of six colors.
Dap Inc Alex Plus Acrylic Latex Caulk with Silicone – All-Purpose Caulk, Available in Ten Colors

Dap Caulk 18152 – White


Features
Can you believe that Dap traces its roots back over a century ago? That’s right! Dap was founded by Elmer Wiggim and Robert H. Dicks in 1865, when the duo began to produce sealing wax meant for food canning. Since then, the company has evolved to become one of the major suppliers of sealants in today’s era.

The Alex Plus Acrylic Latex Caulk with Silicone is one of America’s most popular latex caulks, offering a durable and highly flexible solution for those who want a waterproof seal. It is an excellent adhesive that’s resistant to mildew and mold, meaning that it can be applied both indoors and outdoors.

This caulk is available on Amazon in ten different colors at a retail price of $6.81. Just to give you a flexible choice, we did research on more great sealants by Dap and picked some of which we believe could come in handy in a number of applications. Check them out should you need a different caulk:
  • Dap 18013 Kwik-Seal All-Purpose Caulk, 5.5-Ounce, Almond
  • Dap 00688 Household Waterproof Adhesive Sealant, 100% Silicone, 2.8-Ounce Tube
  • DAP 18895 Kwik Seal Ultra, 5.5 oz, Clear

Get the Best Caulk of 2018!

There you have it! Whether you are looking to seal those gaps around your tub, hide unsightly cracks in your moldings, or just keep the winter chills away, then you will find these caulks useful. Go ahead and take another good look if you are still undecided. We hope to be able to help make your project a reality!

Our Top Choice
Great Stuff Gaps and Cracks Insulating Foam Sealant
Best Value
3M Black Super Weatherstrip Adhesive Tube
Dicor EPDM Self-Leveling Sealant for Manufacturers
Flex Seal Liquid Rubber Sealant
Dap Alex Plus Acrylic Latex Caulk with Silicone