Products & Services - Colas Solutions

Treatments

SealCoat is a protective measure, designed to keep an asphalt pavement sealed from water and UV degradation. The surface layers in an asphalt pavement are under continuous attack by the weather and other destructive elements and will develop minor surface cracks. This then results in the aggregates starting to unravel producing minor cracks, which widen and deepen with time. The damage will continue if proper protective actions are not taken.

The characteristics of bitumen which make it most suitable for use in asphalt are its strong adhesiveness (gluing), water resistance and flexibility properties. The asphalt pavement that you see is only the roof which covers a bed of graded stone aggregates of varying depths according to ground conditions as well as the traffic requirements. The base of aggregate is what really carries the load of the traffic.

SealCoat is designed to:

Protect the surface against Water, Frost and UV Damage. Asphalt surfaces are sufficiently porous to allow water to seep into the base courses. The water softens the aggregates and reduces the overall load carrying capacity of the pavement. More severe damage is caused by the expansion of the trapped water in the pavement during winter months. The freeze-thaw cycles create large cracks and the problem is steadily worsened. SealCoat forms an impervious barrier that does not allow the water to seep into the pavement, thus protecting it.
Protect against weathering. The bitumen binder in the pavement is shielded from ultraviolet rays.
Protect against attack by petrochemicals and deicing salts.
Beautifies the asphalt pavement and adds improves its value.
Saves money for the asset owner.

An application process that save your time and money.

Our dedicated workforce is highly skilled and experienced in applying SealCoat to all types of asphalt surfaces. The SealCoat application process is both advanced and efficient: in suitable conditions application can be completed in just one day. After an initial engineering assessment of the condition of the pavement surface, we undertake the following 5-step process:

Maintenance

In preparation for the SealCoat, the surface is prepared by undertaking pothole patching, crack sealing, pavement rutting and depression correction.

Pre-surface treatments such as new spray seals are also applied.

Cleaning

The pavement surface is rigorously cleaned using either mechanical brooms or suction sweepers, and industrial mobile blowers to remove fine dust particles.

Protection

Surrounding buildings or concrete structures such as kerb and channel, footpaths, crossovers and planter boxes are covered for protection against wayward spray.

Application

The SealCoat is applied utilising specialised machinery to either squeegee or spray applies SealCoat depending on the existing surface texture and job environment.

Linemarking

Lines are marked on the new surface, and any road management structures such as speedhumps or traffic signs are reinstated.