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Color of Blacktop Driveways

The color of blacktop driveways will vary over time. The guide below is one factor in determine the condition of your blacktop driveway.

1. BlackNew surface is smooth and crack free.After curing, deterioration starts. Much like a finish on a new car, sealcoating provides a wearing surface that preserves the original surface.
2. Dark GreyOxidation is starting. Small shrinkage cracks appear and allow
surface water to penetrate below the surface.
Sealcoating will fill small cracks and will halt oxidation. Sealcoating provides a complete surface seal.
3. GreyShrinkage cracks are getting longer and wider. Surface oxidation
pronounced. More surface water is penetrating to the base.
Sealcoating, along with crack repair, stops surface damage. The
surface will be sealed and original appearance is restored.
4. Light GreyReaching critical point where increasing moisture penetration is damaging base. Surface lines are being abraded and surface is getting rough.Adequate repair and sealcoating will stop surface deterioration. Some larger cracks, though sealcoated and reduced, might remain visible. Asphalt is sealed to prevent further weather and oxidation damage.
5. Light Grey to WhiteOxidation, cracking, abrading, and base damage occurring at increasing rate. Surface stones are being dislodged by traffic. Surface texture is open and rough.This is your last chance for proper sealcoating! Further deterioration will inevitably lead to an expensive overlay or complete replacement of asphalt.
6. Light Grey to WhiteGeneral disintegration rate accelerated due to previous base and surface damage. Shrinkage at curb lines creating large gaps.If moisture damage to base is not too great, sealcoating or an overlay may extend surface life. It is no longer practical to sealcoat until after extensive repairs are completed.
7. Bone WhiteBase failure has allowed affected area to settle and crack in gator pattern. Base failure hastened by previous water penetration. Base and surface failure spreads from this point. Surface is disintegrating rapidly.Extensive infrared repairs or an overlay is a must! Sealcoating will not stop base collapse.
8. WhiteAreas are breaking up. Loose blocks are rocking and can be dislodged. General surface is very poor.An overlay or complete replacement of asphalt is required.
9. WhiteLarge pieces of pavement are breaking off edges. Traffic is forced to slow down to avoid large holes.An overlay or complete replacement of asphalt is required.
10. WhiteBase materials are splashed out. Surface is heaved and generally broken.Replacement of asphalt is required.