APE July 2025 | Page 29

Asphalt Emulsion Sealers
Composition: Made from asphalt( bitumen) and emulsified in water, combined with fillers like sand or clay, and additives for flexibility and adhesion. They contain fewer VOCs than coal tar sealers. Application: Similar to coal tar, AE is applied with a squeegee, spray or brush, in one to two coats. The pavement must be cleaned, and cracks repaired prior. Curing typically takes 24-36 hours under dry, warm conditions( warmer than 50 ° F). Spray systems are common for larger areas due to ease and speed. This sealer has been known to be finicky under trees, cool conditions and excess ground moisture. Notes: These are more environmentally friendly and easier to apply than coal tar but may offer less resistance to oil and gas spills, but the“ non skin burn” is the real win for me and my crew.
Acrylic Sealers
Composition: Made from acrylic polymers, suspended in a water-based solution, often fortified with additives for UV resistance and durability. They may include sand for texture or fast-drying agents. This is likely the most technical sealer of them all. Application: Applied in thin coats( one to two layers) using a sprayer or roller after thorough surface cleaning and crack repair. They dry faster than other sealers( often within 4 – 8 hours) but require warm, dry conditions. Not suitable for squeegee application due to their thinner consistency. Notes: Acrylic sealers are premium, offering excellent UV protection and a glossy finish, but they are more expensive and less resistant to oil stains compared to coal tar.
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