The answer is generally no, as screed is a semi-liquid material that hardens over time. Once it has cured, it becomes difficult to remove or plane down any lumps or bumps. Therefore, it is crucial to address any issues during the screeding process itself.
Preventing Lumps in Screed
To avoid the presence of lumps in screed, it is important to follow best practices during the installation process. Here are a few tips to prevent lumps:
- Correct Mixing: Ensure the screed mixture is well-mixed, with consistent ratios of cement, sand, and water. Follow the manufacturer’s guidelines to achieve the right consistency.
- Proper Application: Apply the screed evenly and smoothly, using the appropriate tools. Avoid depositing excessive screed in one area, as it may lead to lumps or unevenness.
- Professional Installation: Hiring experienced professionals for screed installation can significantly reduce the risk of lumps. Experts possess the knowledge and skills to ensure a smooth and level finish.
Addressing Uneven Screed
In cases where screed is already cured and lumps are present, it is not possible to plane down the screed itself. However, there are alternatives to rectify the issue:
- Grinding or Sanding: If the unevenness is minimal, grinding or sanding the surface may help to level out any slight imperfections. This method can be effective on small areas or isolated lumps but may not work for larger sections.
- Self-Leveling Compounds: Self-leveling compounds, also known as floor levelers, can be used to correct uneven screed. These compounds are poured over the existing screed and then spread evenly. They are designed to flow and settle into any low areas, creating a smooth and level surface.
- Overlaying with New Screed: In severe cases of uneven screed, overlaying with a new layer of screed may be necessary. This method involves applying a fresh layer of screed over the existing surface to create a level finish. However, it is essential to determine the cause of the initial unevenness to prevent the recurrence of the issue.
Consulting Professionals
Rectifying uneven screed is a task that requires precision and expertise. To ensure the best possible outcome, it is recommended to consult with flooring professionals or screeding specialists. They will have the necessary knowledge and equipment to accurately assess the situation and suggest appropriate solutions tailored to your specific needs.
While it is not possible to plane down lumps in screed, preventing them during the initial installation process is crucial. Following correct mixing and application techniques, and seeking professional help if needed, will help you achieve a level surface. In cases where issues have already occurred, options such as grinding, self-leveling compounds, or overlaying with new screed can rectify the unevenness. Remember to consult experts to ensure proper implementation and achieve the best results for your flooring project.