This is a photo of a flat roof being installed in Sevenoaks, Kent. Installation carried out by Sevenoaks Roofers

Introduction: Repairing slipped tiles on your roof requires careful preparation to ensure the job is done effectively and to prevent future issues. Properly preparing the roof surface before starting repairs enhances the fix’s durability and contributes to the overall longevity and stability of your roofing system. Here’s a comprehensive guide on how to prepare the roof surface before repairing slipped tiles:


  1. Safety First: Before starting any roof repair work, prioritise safety. Ensure you have appropriate personal protective equipment (PPE), such as gloves, safety goggles, and non-slip footwear. Use a stable ladder that reaches at least three feet above the roof edge for safe access.
  2. Assess the Damage: Carefully inspect the area where the tiles have slipped to assess the extent of the damage. Look for cracked or broken tiles, loose nails or fasteners, and potential water damage to the underlying roofing materials. Note any areas where tiles are displaced or misaligned.
  3. Gather Necessary Tools and Materials: Collect all the tools and materials you’ll need for the repair, including replacement tiles, roofing nails or screws, a hammer or screwdriver, roofing adhesive or sealant, a pry bar or tile lifter, and a broom or brush for cleaning debris.
  4. Clear Debris and Clean the Area: Use a broom or brush to remove debris, leaves, and dirt from the roof surface around the repair area. Clearing debris ensures a clean work area and prevents contaminants from interfering with the adhesion of new tiles or sealants.
  5. Secure Surrounding Tiles: Before replacing the slipped tiles, secure any surrounding tiles that may be loose or at risk of slipping. Use roofing adhesive or additional fasteners to reinforce adjacent tiles and prevent further movement or displacement.
  6. Remove Damaged Tiles Carefully: Use a pry bar or tile lifter to lift and gently remove the damaged or slipped tiles. Avoid excessive force to prevent damaging surrounding tiles or the roof substrate. Dispose of damaged tiles properly and safely.
  7. Inspect and Repair Underlying Roofing Materials: Inspect the underlying roofing materials, such as felt underlayment or flashing, for any signs of damage or deterioration. Replace damaged or worn-out materials as necessary to ensure a solid foundation for the new tiles and prevent future slipping issues.
  8. Install Replacement Tiles: Carefully position and align the replacement tiles in their correct place. Secure the tiles using roofing nails or screws, ensuring they are fastened securely but not over-tightened to avoid cracking the tiles. Apply roofing adhesive or sealant under the edges of the tiles to provide additional stability and weatherproofing.
  9. Check Alignment and Finish: Once all replacement tiles are installed, check the alignment and ensure they blend seamlessly with the existing roof pattern. Smooth out any excess adhesive or sealant and clean the surrounding area to maintain a neat and professional finish.
  10. Perform a Final Inspection: Inspect the repaired area to ensure all tiles are securely fastened and properly sealed. Check for any gaps, loose nails, or potential areas of concern. Address any remaining issues promptly to prevent future slipping or water infiltration.


Conclusion: Properly preparing the roof surface before repairing slipped tiles is essential for a durable and effective repair. By following these steps and taking the necessary precautions, homeowners can ensure their roofs remain stable, secure, and protected against the elements. Investing time and effort in thorough preparation extends the roof’s lifespan and enhances its overall performance and reliability.


Taking a proactive approach to roof maintenance and repairs helps preserve the integrity of your home’s roofing system and prevents costly damage in the long run. By understanding the importance of preparation and using proper techniques, homeowners can confidently maintain a safe and functional roof that withstands the challenges of time and weather.

Call us on: 01732 440691
Click here to find out more about Sevenoaks Roofers
Click here to complete our contact form and see how we can help you with your roofing needs.