Is it going to prevent the deterioration from happening to your asphalt?

No, But it’ll slow down the deterioration process. The reasons for sealcoating revolve around the constraints of the asphalt pavement exposure in oxidation of the asphalt. Which will results in a loss of plasticity. Oxidation allows the interest of water molecules, which accelerates surface raveling and fatigue and thermal cracking.

Thus reasons are associated with what sealcoating can do to address these issues.

Assuming that many asphalt pavements are designed and assembled properly meaning the foundation is sound and compacted, the right base material is compressed and placed correctly, and the correct thickness of hot mixture is placed and compacted correctly. Sealcoating will extend pavement life by shielding the asphalt binder from oxidation, slowing down that the inevitable corrosion.

Sealer is as good as the asphalt but it will not prevent the breaking of pavements caused by voids, mix equilibrium that is poor compaction or use areas. Since asphalt pavement offers poor resistance to ultraviolet rays along with sunlight, it begins in order to deteriorate as a consequence of oxidation exposure to air and sun as soon as its assembled. Oxidation deteriorates asphalt that the binder in asphalt pavement rapidly.

Oxidation speeds up that the aging of asphalt pavement, so anything you may do to slow that the oxidation process will prolong asphalt life.