Removing line marking paint from tarmac can be a bit tricky, but it’s doable with the right approach. Whether you need to refresh old lines or remove incorrect markings, here are a few methods you can try:
1. Mechanical Removal
- Grinding: One of the most effective methods is using a grinder or scarifier. These machines physically remove the paint by grinding away the surface of the tarmac. It’s a powerful method, but care must be taken to avoid damaging the tarmac itself.
- Blasting: Another option is shot blasting or sandblasting. This method involves blasting the surface with high-pressure air mixed with abrasive materials. It’s a less invasive option than grinding but still requires skill to avoid damaging the tarmac.
2. Chemical Removal
- Solvents: You can use specific paint-removing solvents designed for tarmac. Apply the solvent to the paint and let it sit according to the product instructions. Afterward, you can scrub the area with a stiff brush or pressure wash it away. Always test a small area first to ensure it doesn’t damage the tarmac.
- Paint Removers: There are paint strippers designed for use on tarmac. Apply these products similarly to solvents, following the manufacturer’s guidelines. After the paint softens, scrape it off gently.
3. Thermal Removal
- Heat Gun: A heat gun can be used to soften the paint, making it easier to scrape off. This method is best for smaller areas or more delicate jobs where you want to preserve the tarmac.
- Infrared Heaters: Infrared heaters are sometimes used by professionals to remove line markings by heating the paint until it becomes pliable enough to be scraped away.
4. High-Pressure Washing
- Using a high-pressure washer can help to remove loose or degraded paint. This method is less effective for completely removing well-adhered markings but can be a good initial step before using other methods.
Professional Assistance
If you’re not confident in doing it yourself, consider hiring professionals who specialise in line marking removal. Companies like CR Ltd, one of the country’s leading line marking companies, offer expert services in removing old or incorrect line markings without damaging the underlying surface. They use advanced techniques to ensure a clean and smooth finish.
Choosing the right method depends on the size of the area, the type of paint, and the condition of the tarmac. It’s important to approach this task carefully to avoid damaging the tarmac, especially if it’s relatively new or in good condition.