Asphalt repair: That's how it works

Also on the asphalt gnaws the rage of time - and especially the weather. Especially temperature changes and harsh winters can clog asphalt. You can find out in detail how asphalt can be repaired yourself in detail in our article.

Damage in the asphalt

Damage to the asphalt often occurs due to severe frosty weather and the change from frosty weather to thawing. This can cause cracks to form or even larger holes. But even movements or instabilities in the ground (possibly also under-flushing of the substructure) can lead to the formation of cracks.

Since these potholes can clog the suspension of the car when overlooked, and cracks tend to spread further, an immediate repair is required. Repairs on the asphalt can be carried out with fairly simple means.

Fill deep holes

If holes are particularly deep (deeper than about 10 cm) you should preferably be filled with compressible material (when renovating with cold asphalt) or stabilized by pouring concrete to a depth of about 6 cm. Otherwise, new cracks can threaten.

Repair with liquid bitumen

Very often liquid bitumen is used to repair asphalts. It can be applied easily and usually gives a good result. Suitable products are also often marketed as "Crack Filler for Asphalt".

Repair with liquid bitumen - step by step

  • liquid bitumen
  • very fine sand
  • cement
  • small shovel
  • brush

1. Clean the crack

First, take a close look at the crack. Carefully clean it with the scoop of any loose components. If, after cleaning, there is very dry soil inside the crack, moisten it gently with a little water. Then wait with the filling until the water is completely absorbed. There must be no more water.

2. Edit the edges of cracks

Spread a little bit of crack filler on the side edges of the crack to stabilize it. Use a brush for this.

3. Fill in the crack

Mix the filler with a little fine sand until a spreadable mixture is obtained. Carefully fill the crack with the trowel. At the end, smooth out the filler cleanly. Let dry. In the end, sprinkle with cement to remove the last buildup. You can also use sand for dusting.

Fill holes and cracks with cold asphalt

Cold asphalt is an even easier way to close damage in the asphalt. The material only needs to be introduced and compacted.

For small holes (smaller than 0.2 m²), you can simply use a hand-tappet to compact, and for larger-sized holes, use a bottom compactor (vibrating plate). It's also easier if you have to patch several holes.

Holes deeper than 10 cm should also be stabilized with concrete when mending from below. The holes are cleaned as described above when filling with liquid bitumen, cleaned, moistened if necessary and freed from loose material. But they are usually drivable immediately after compaction.

Tips & Tricks

If your substructure has weaknesses or is not sturdy enough, the asphalt surface can break very often. So pay particular attention to the load-bearing capacity and stability of the substructure underneath the asphalt. Otherwise, you will have to rehabilitate very often.

Video Board: Driveway Pothole Repair - Asphalt Driveway Repair