Repairing tarmac drives promptly saves you time and
Paving your driveway is often a sizeable investment so when tarmac repair is needed it
is best to do it quickly. This will prevent your driveway from getting worse which could end up costing you even
more to repair.
There are several defects that show up over time that are fairly common to tarmac driveways. These include:
- Fuel and/or oil spillage.
Caught early enough these small tarmac repairs can be handled by most
handymen by using cold tarmac repair.
Tarmac Repair to Driveway Cracks
There are several different types of cracks that could affect you as a driveway owner. The type of crack is
dependent on what the problem with the driveway is.
It is important however that you try and seal all cracks that are a quarter of inch across or bigger. Failure to
seal them will allow water to go in and damage the underlying foundation layers. Your driveway will then
deteriorate even further and require more than just the basic tarmac repair
products. DIY tarmac repair would also be out of the question and
expensive professionals would be needed to fix it.
These cracks are:
- Alligator or crocodile depending on which part of the world you live in
These are cracks that have come through the tarmac surface from the
underlying foundation layers. Movement in the underlying layer causes the cracking. The direction of the crack can
be longitudinal, transverse, diagonal and even block shaped and generally follows straight lines. The use of cement
to strengthen the layers below the tarmac surface will cause this type of cracking to occur.
Alligator or Crocodile Cracking
These cracks are interconnected and take on the appearance
of chicken wire or look like the skin of a crocodile. Tor the underlying foundation layer may have been substandard
quality or saturated with water. The tarmac as it ages becomes brittle and cracks. Crocodile cracking generally
starts off as small localized areas. These should be repaired quickly before they spread and become potholes or
These cracks are at right angles to the centerline of your driveway and are
transverse. They are caused by the shrinking or the contracting of the tarmac surface because of low temperatures.
As the temperature falls the surface contracts and because the bitumen binder is unable to relieve the stresses the
With block cracking your tarmac driveway becomes divided into square or
rectangular sections. These can vary in size from a square foot to up to ten square feet. The cause of this is the
underlying foundation layer or layers not being compacted as well as they should be.
Unless you have a particularly wide drive way it is unlikely yours will
suffer from linear cracking. The most common reason for this happening is the difficulty in properly compacting the
joint between two lanes of paving.
These are quite a common problem with driveways. Often the edges of a driveway
construction are not compacted to the same quality as the rest of it. Over time the edges fall away and cause the
These are the main types of cracking that you could experience with your driveway. The most important thing you
can do if you come across them is to do the tarmac repair quickly. Leaving them will allow water
to get in and further deterioration to take place.
Potholes come in all sorts of shapes and sizes. They will often start life as a small crack allowing water to
get into the base and progressing from there. Other factors like poor materials, a lack of drainage, too thin a
surface, badly compacted foundation layers and even poor driveway maintenance can also cause them. Repairing
potholes as they occur will prevent a bad situation getting worse.
Using a tarmac repair kit or tarmac
repair bags to patch them is easy enough for most home owners to do
This can be a big problem particularly if your car is an older model and prone to the odd oil leak here and
there. If you can’t stop the leaks then you need to manage them. Place a tray under your vehicle whenever it is
parked on your driveway.
On areas where leaks have already occurred it is best to remove the affected area by digging a nice square hole.
Then you can patch it with one of the many available brands of tarmac repair kits. If these areas are left to
themselves they will develop into potholes. More extensive and expensive repair work will then be needed.
The bottom line when it comes to tarmac repair is, do it as soon as the need for it is evident.
This will save you time and money.