What was once only widely available and known to industry agents and contractors has now been made available for residential users. Liquid rubber has several applications in waterproofing and its versatility against its very low cost has made it one of the go-to items for those working in the field. However, what is it exactly? Its a rather difficult question to answer and many of us just take the idea of liquid rubber for granted. Ive done considerable research into the topic and will reveal my comprehensive investigation into identifying what it is and what its used for. So, what is liquid rubber? Lets find out.

What Is Liquid Rubber?

Liquid rubber is a variation of synthetic rubber, which is supplied in its liquid form rather than being heat-treated into a solid. When liquid rubber is used and heat is applied to it, the rubber will cure into the elastic-like property were familiar with when we think of rubber and conform to the desired shape. It is mostly used as a roof sealant and other light crack sealer, but is being increasingly used in the automotive industry where it is being tested as a replacement for weather stripping on windshields.

What Is It Used For?

Liquid rubber is also used for the creation of rubber molds. This is a typical choice for mold creators because rubber will not stick to the casing of the mold, which makes it very easy to remove once the rubber has hardened and is ready to be used. Liquid rubber can also be sprayed or painted into an object to create a cast, which is an idea that has recently experienced a considerable surge in popularity.

Despite its malleable nature, liquid rubber is also used for its adhesive properties. When applied properly, liquid rubber is able to create a watertight seal and is often used as a coating in waterproofing. Its also used in the creation of medical implants and tools when mixed with a silicone based in order to ensure theyre impermeable to bacterial and viral agents.

The above uses seem rather technical and beyond the needs of many users. It is indeed a specialist liquid, but more uses and being uncovered by the day. Today, liquid rubber is marketed as a do-it-yourself home repair item that usually lists exterior uses as most appropriate. For many, liquid rubber is used to seal various exterior cracks that form naturally over time. These include small cracks in a rooftop, sealing rain gutters, and patching small holes in vinyl siding. Whats best is many liquid rubbers today are able to be color treated, so that they may be dyed to match the homes exterior. No, liquid rubber wont leave any discolored bulges. Users can match liquid rubber to just about any color they require!

Around the house, liquid rubber is used for sealing leaky windows and doorways.  It can also be used to patch small cracks in a ceiling, but this is best done externally to ensure water damage doesnt spread to surrounding surfaces. Nonetheless, it can be combined with an external treatment to ensure a roof cannot leak any more!

Are All Liquid Rubbers Created Equal?

Not necessarily. Because variations in manufacturing processes exist, there can be differences in the quality of a certain brands liquid rubber. Most of these quality differences will be seen in the heat treatment processes that the liquid rubber will be required to undergo. Normally, exposure to sunlight is all of whats required, but an inferior liquid rubber will require the use of expensive heat lamps.

What Is the Best Liquid Rubber?

Here is the fun part. After extensive research into finding the best liquid rubber, I was able to eliminate many of the lesser-quality products. However, there was one product that stood out as a cut above the rest. That product was FlexSeal.

FlexSeal is liquid rubber within a pressurized can. It is this specific trait that makes the product one of the best choices on the market today. When canned, liquid rubber can be directed at an intended target more easily. This ensures a coat of liquid rubber is more even and this achieves a much better seal. My research is only confirmed by the several pleased users who have left their reviews on the Internet. Some users had to say this about FlexSeal:

For these reasons and more, I wouldnt hesitate recommending FlexSeal to prospective buyers. To know how this liquid rubber works, its benefits, and real user experiences, refer to our review on Flex Seal.