Can tarmac be laid in the rain? Tarmac is a popular choice for driveways, roads, and commercial surfaces due to its durability and smooth finish. However, weather conditions play a crucial role in the quality and longevity of a tarmac surface. One of the most frequently asked questions is, can tarmac be laid in the rain? In this blog, we will explore how rain affects tarmac installation and whether it is advisable to carry out the work in wet conditions.
How Rain Affects Tarmac Installation
Tarmac is laid while it is hot, typically at temperatures between 120°C and 180°C. The process involves applying the material to a prepared base and compacting it to create a smooth and durable surface. Rain can interfere with this process in several ways:
- Cooling Too Quickly – Rainwater can cause the tarmac to cool down too fast, preventing proper compaction and leading to weak spots.
- Surface Damage – Moisture can create imperfections, such as holes and cracks, which can affect the structural integrity of the surface.
- Poor Adhesion – A wet base can make it difficult for the tarmac to bond correctly, increasing the risk of future deterioration.
Is It Possible to Lay Tarmac in the Rain?
While it is technically possible to lay tarmac in light rain, it is not recommended. Professional contractors, such as RJB Paving, prefer to schedule tarmac installations during dry weather to ensure a high-quality finish. In some cases, minor drizzle may not significantly impact the process, but heavy rainfall can lead to major issues that compromise the lifespan of the surface.
Best Conditions for Laying Tarmac
For optimal results, tarmac should be laid under the following conditions:
- Dry Weather – A rain-free day is ideal for ensuring proper compaction and adhesion.
- Moderate Temperatures – Extreme heat or cold can also affect the installation process.
- Proper Ground Preparation – The base should be dry and well-compacted to support the tarmac layer.
What to Do If Rain Is Forecast
If rain is expected on the day of installation, it is best to postpone the project. A reputable contractor will monitor the weather and advise on the best time to proceed. At RJB Paving, we always assess conditions carefully to ensure that every project is completed to the highest standard.
Conclusion
So, can tarmac be laid in the rain? While it is possible in light showers, it is not advisable due to the risk of poor adhesion, premature cooling, and long-term damage. Choosing an experienced contractor like RJB Paving ensures that your tarmac surface is installed in the best possible conditions for durability and performance.
