The FSA AE (Fast Sealing Additive for Asphalt Emulsion) has all the same benefits as the FSA but it’s specifically formulated for asphalt emulsion sealer. Since coal tar sealers are restricted in some states, asphalt emulsion mixed with FSA AE is a great alternative.
Asphalt emulsion sealers have a lower durability point and less bonding factor compared to coal tar sealers and blends. FSA AE helps asphalt emulsions gain strength and stability to give your customers a great output.
- Asphalt Emulsion – 100 gallons
- FSA AE – 2 to 5 gallons
- Water – 10 to 20 gallons
- Sand – 300 to 500 lbs
Coverage for FSA AE/sealer mixtures containing sand will range from 6 to 10 square yards per coat (3 to 5 sq. yards for two coats) per gallon mix. Actual coverage will depend on pavement porosity and method of application.
The formulation above is only a suggested starting point. Actual mix ratio will depend on the job requirements, as well as what works best for your crew and equipment. Generally:
- More FSA AE will shorten the sealer drying time.
- Up to a point, more FSA AE will result in a thicker, more viscous sealcoat. Past that point, any more FSA AE added will actually thin out the mixture. This point varies according to sealer brand and type.
- More sand will thicken the mixture.
- More sealer will thicken the mixture.
- More water will thin out the mixture. Too much water will cause issues with handling and drying time.
Mixing the Sealcoating Material:
FSA AE does not require pre-dilution but should be mixed well before using. Add prepared FSA AE and some water into the predetermined amount of sealer, and then begin agitation. It is better to start with only a small amount of water and continue adding as needed to avoid thinning the mixture too much from the start.
- Fog spray the pavement with water to dampen it, but do not use too much. Too much water will leave puddles and thin out the pre-mixed sealer.
- FSA AE-fortified sealer can be applied using a sprayer system, squeegee, or brush.
- When applying sealer, ambient temperature should not fall below 50⁰F, and no rain must be forecasted with 24 hours after application.
- If necessary, apply a second coat if the first coat has dried enough without scuffing. After allowing the second coat to dry, check to make sure no tracking or scuff marks are visible before opening the pavement for regular use and traffic.
Note: If you own the AK130, AK230, Drum Spray System, Tote Spray System or Portable Spray System, you cannot use sand. Use FSA AE without sand in these machines.