Yes, it can be suitable, but it depends on the surface condition and how well it is prepared. You can lay tarmac over concrete if it has a clean, stable base and is structurally sound. Laying tarmac or modern asphalt over concrete gives it a polished finish.
If the surface is cracked or poorly prepared, it can cause problems and reduce your driveway’s lifespan. You must understand the key factors to consider before doing so and follow the main steps for a better finish. Let’s explore the benefits of laying tarmac over concrete.
Not every surface is suitable for laying tarmac directly, so check these factors carefully before laying tarmac over concrete. Considering the following factors will help you decide whether your surface is ready for tarmac.
Laying tarmac over concrete isn’t as simple as applying a layer. It follows a step-by-step process to deliver a smooth, long-lasting finish. Here are the main steps to follow for laying tarmac over concrete.
Examine the site to ensure the subbase is stable and won’t shift under heavy loads. Check for damage and cracks, and repair them. Level uneven surfaces or height differences to prepare the surface for laying tarmac.
Remove all dirt, debris, and filth, then jet-wash the surface to clean it thoroughly, as a clean surface is essential for adhesion when laying tarmac over concrete. Let the surface dry completely before starting.
Once the surface is clean and dry, apply a layer of asphalt and bitumen emulsion to improve adhesion between the tarmac and the concrete surface. This sticky layer strengthens the bond and helps prevent delamination.
Pour heated tarmac over the prepared area over the dried tack coat. Spread the required thickness using a rake. Ensure the tarmac is evenly spread across the surface, removing all the bumps and dips.
Compact the tarmac using a big roller or compaction plate. Make multiple passes to cover all areas thoroughly, as good compaction is essential to avoid air pockets and achieve a durable, smooth finish.
After laying the tarmac, let it dry completely and avoid using it during this period. Once dry, apply a sealant to prevent wear and extend its lifespan while giving it a long-lasting, appealing look.
Laying tarmac over concrete offers aesthetic appeal and lower upfront costs. It gives your driveway long-lasting strength and resistance to environmental factors. It offers several benefits, including:
Tarmacing your surface is a worthwhile, practical solution, but it depends on your surface condition and intended use. From inspecting the surface to applying a final smooth finish after sealing, every step of laying tarmac over concrete is essential.
You can lay tarmac over existing concrete only if it is in good structural condition and has a strong, stable base, because poor concrete can cause damage and reduce the lifespan of the tarmac. If you are looking for reliable sources to choose the best material for your driveway, you can contact Ready Mix Concrete London, which provides high-quality, durable material.