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How To Choose Good Blacktop Sealers: Coal Tar Versus Asphalt Emulsion

Knowing what is in blacktop sealers is such an important part in choosing a good one. Especially when you take the time to compare coal tar and asphalt emulsion. This is important to everyone who either gets their driveway sealed or is in the business of sealcoating. Knowing what is going on the asphalt, and why, is the only way for success.

What Matters: Way too often we hear the question “Why does it matter what is used to seal asphalt?” First of all, the properties of the two types are different and it affects how they stand up to use. Secondly, how you buy and apply have challenges you need to be aware of.

Asphalt Emulsion Blacktop Sealers: Although there have been vast improvements made in this type of sealer, there are some really important differences when compared to coal tar. Take a look at how it stacks up when you compare.

  • Requires warmer temperatures when applying
  • Curing is negatively affected in high humidity
  • Temperature and humidity troubles mean a 24 hour dry time before a second coat can be applied
  • Needs 5lbs silica sand per gallon to try to make it last longer and dry faster
  • Not as resistant to gas and oil spills
  • Not standardized and is not consistent from brand to brand and even from batch to batch resulting in differently colored applications
  • Fades faster with sun exposure

The consistency of coal tar products is certainly the most important to thing anyone who seals driveways for business. The color variation on asphalt emulsion sealers is a nightmare to deal with, even when you’re dealing with the same batch! The coaltar sealcoating clearly deliver better protection, more consistently, in a wider range of temperature and humidity conditions. Now you know how to choose blacktop sealers for asphalt, and why.

Click Here To Learn More On What To Look For

4 thoughts on “How To Choose Good Blacktop Sealers: Coal Tar Versus Asphalt Emulsion”

  • Darrell W. Mills June 18 at 1:43 pm

    I have a 5/6,000 sq ft driveway that has been sealed several times. The last using asphalt which has not done well. How many gallons of the coal tar do I need, where can I get it and who much does it cost?

    • Hello Darrel;

      If you are applying the sealer by hand or with a broom or squeegee you will require 2 X 55 Gal drums of sealer to complete your job. If you are spraying sealer on you only require one drum. You can order directly from our store and have enough sealer shipped directly to you for FREE with NO sales tax. Simply click the link below to see our sealer store.

      Our sealer covers at 50 square feet per gallon applied by hand and 100 square feet per gallon sprayed.

      Sealer Store : http://www.asphaltkingdom.com/supply-store/sealer-store.html

      Spray Systems: http://www.asphaltkingdom.com/sealcoating-equipment/spray-systems.html

      We look forward to earning your business. Please contact me if you have any additional questions at 866 399 5562 ext 22 or directly at 438 288 3994.

  • Jay (Josephine) Stewart July 4 at 7:26 pm

    I am tasked with researching coal tar vs. asphalt emulsion spray coating for our community consisting of about 2 miles of roadway (including clubhouse and guest parking spaces). I have obtained two estimates from reliable sources, however each one advocates using one over the other. Would you be kind enough to give me your opinion on which process we should use. Our current roadway has been tested and has about 10 years of life left, so we only want to spray coat it at this time. TIA, J. Stewart

    • Without a doubt, if it is legal in your state to use coal tar sealer, that is the best choice. It is held to the highest regulatory standard so you know you are getting a quality product, and the Federal Aviation Administration, for example, will only allow runways to be sealed with coal tar sealer. If it's good enough for 747s, it will likely be right for your job too. Hope that helps!

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