The three main types of concrete sealers used to seal driveways are silicate sealers, Silane-Siloxane sealers, and acrylic sealers.
Silicate sealers, also known as concrete densifiers, chemically react below the surface to form a calcium silicate hydrate barrier within the pores, increasing the strength and density of the concrete. If your concrete is showing signs of deterioration or weakness from surface abrasion, such as dusting, a silicate sealer like the Armor S2000 or Armor L3000 are a great choice. They are designed specifically for unsealed concrete surfaces.
Silane-Siloxane sealers, also known as water repellent sealers, chemically react below the surface to form a hydrophobic barrier within the pores that will reduce the absorption of water by up to 45%. Silane Siloxane sealers, like the Armor SX5000 WB and Armor SX5000, are the most popular type of concrete sealer for driveways because they won’t change the look or color of the concrete, and they won’t leave behind a visible surface film. Silane-Siloxane sealers are designed specifically for unsealed concrete, brick, pavers, and natural stone. They can also be applied over surfaces previously sealed with a silicate sealer.
Acrylic sealers are designed to enhance and protect the concrete by creating a film over the surface of the concrete. Water based acrylic sealers like the Armor WB15 and Armor WB25 will leave behind a protective gloss surface film, while solvent-based acrylic sealers like the Armor AR350 and Armor AR500 will darken the concrete to make it look wet, and protective it with a gloss surface film. Acrylic sealers are designed for use on concrete and concrete pavers.
The type of concrete sealer is best for your driveway will depend on what you want your driveway to look like once sealed, and what you currently have down for a driveway sealer.