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Hereford Paving Contractors
Vincent Carey Rd, Rotherwas Industrial Estate, Hereford HR2 6FE

Easy Block Paving Repair Guide

Repairing and Looking After The Block Paving On Your Driveway, Patio and Garden

Easy Block Paving Repair Guide: Refill & Seal Like a Pro

Block paving is popular for driveways and patios, offering a durable and aesthetically pleasing surface. However, it’s not uncommon for blocks to shift, sink, or become damaged over time. Repairing block paving isn’t just about maintaining appearances; it’s crucial for safety and prolonging the life of the paved area.

Fortunately, fixing block paving is a task that many homeowners can tackle with a bit of know-how and the right tools. Whether dealing with a few loose blocks or more extensive damage, understanding the repair process is the first step towards restoring your paving to its former glory.

In this guide, they’ll walk you through the essential steps to effectively repair your block paving, ensuring a smooth and even surface. They’ll cover everything from assessing the damage to the final touches, so you can confidently tackle the job and enjoy a revitalised outdoor space.

Assessing the damage

Before starting the repair process, It Is Crucial to Assess the damage to your block paving. A thorough inspection will determine the extent of the repairs needed and help create an effective plan of action.

Begin by looking for any loose or unstable blocks. These are usually evident as they move or have visible gaps around them when stepped on. Such blocks could be a tripping hazard and should be marked for replacement or repositioning.

Next, check for cracks and chips on individual paving blocks. While minor imperfections might be purely aesthetic, larger cracks could indicate underlying issues with the base layer or the need for a complete block replacement.

It’s also important to look for signs of sinking or raised areas. These could be symptomatic of problems below the surface, such as sub-base erosion or improper drainage. Addressing these areas may involve more extensive repair work, including excavation and re-laying of the blocks.

Lastly, evaluate the condition of the jointing sand. If the sand is missing or washed out, it can increase movement and damage to the blocks. Replenishing jointing sand is a simpler aspect of the repair process, but its importance shouldn’t be underestimated.

Documenting the damage with photographs can be helpful, especially if you’re planning to seek advice or assistance. It provides a clear reference point for the areas needing attention and can be useful when purchasing materials for the repair.

For a more extensive look at protecting your paving, make sure to look at sealing and protecting your block paving for further details.

After a comprehensive damage assessment, you’ll better understand the scope of repair required. This sets the foundation for gathering the necessary materials and tools, and it ensures that the repair process, once started, can be carried out smoothly and efficiently.

Gathering the necessary tools and materials

Once the damage to the block paving has been meticulously assessed, the next step is to gather all the tools and materials required for the repair. Essential tools for this job typically include:

  • A mallet or hammer
  • Chisel
  • Stiff-bristled brush
  • Sweeping brush
  • Shovel
  • Knee pads for comfort
  • Spirit level

For materials, one will need:

  • Replacement paving blocks
  • Jointing sand
  • Sharp sand for the base

Having high-quality replacements and proper jointing compounds is essential to ensure the repaired paving matches the rest of the installation and that the integrity of the paving is maintained.

Sifting through the types of materials is crucial. Replacement blocks should be identical to texture, colour, and size. This ensures a uniform appearance post-repair. Finding the closest match is of utmost importance if the exact type of block isn’t available. Jointing sand plays a key role in block paving stability. It must be fine-grade, encouraging strong bonding and solid interlock between the blocks.

For the sharp sand base, it’s important to get sand with angular grains rather than rounded grains; this aids in better compaction and stability. The sand should also be free from clay and silt to prevent future settling.

It’s also recommended to have extra materials on hand to account for any unforeseen complications that might arise during the repair process.

Preparing the workspace and ensuring all tools and materials are within easy reach can significantly streamline the repair process. Organising the materials by type and size helps quickly identify and apply them during the repair, enhancing efficiency.

Preparation and organisation are key to ensuring that once the repair work begins, it can proceed without interruptions or delays. It’s all about setting the stage for a repair that seamlessly restores the block paving to its original state.

Removing and replacing damaged blocks

Once the tools and materials are ready, it’s time to address the damaged blocks. The first step is to remove the faulty blocks without disrupting the surrounding paving. Using a flat chisel and a hammer, lift the damaged blocks carefully from their position. It’s crucial to avoid damaging the edges of adjacent blocks to prevent additional repairs.

For blocks that are difficult to remove, tapping around the block with the hammer before lifting can loosen it effectively. If they’re really stubborn, one might need to break them into smaller pieces, which should be done cautiously to minimise the impact on the rest of the paving.

After removing the damaged blocks, it’s time to prepare the base. Remove any debris and ensure the base is level. If necessary, add new sharp sand and compact it to provide a sturdy foundation for the new blocks.

The next step is to install the new blocks by carefully placing them in the voids. It’s imperative to match the orientation and pattern of the original design for a seamless look. Once in place, use a rubber mallet to gently tap the blocks down, ensuring they are level with adjacent blocks.

Fine-grade jointing sand is then brushed into the gaps around the new blocks. This helps to lock them in place and maintain the structural integrity of the paving.

Remember, weather conditions can affect the repair process. Dry and mild weather ensures the sand settles well and the materials bond effectively. If rain is expected, consider covering the repair area to prevent washouts or delays in the setting process.

Lastly, by walking over the repaired paving or gently compacting the area with a plate compactor, the blocks will be bedded in, and the surface will be made even, creating a stable and aesthetically pleasing finish.

Re-leveling and stabilising the area

Once the damaged blocks have been removed and the base prepared, re-levelling is crucial for the longevity of the paved area. Poor foundation preparation can lead to further sinking and dislodgment of blocks. Begin by checking the level of the existing base and remove any irregularities or debris that might have been overlooked initially. Areas that are uneven will need to be filled with new sharp sand, which should be carefully spread across the base.

For the re-leveling process, they’ll need a long and straight timber plank to act as a screed. Drag the plank over the sand to create a flat surface, checking the level as they go along. This method ensures a uniform thickness of the sand, which is vital for the paving’s stability.

After screeding, walk across the area to identify any soft spots that could indicate further compaction is needed. Additional sand should be used to fill and level these pockets if they find any. Following this, a vibrating plate compactor can be used over the area to ensure a well-compacted and flat base ready for the new blocks.

Installing the new blocks begins by carefully placing them onto the compacted sand. They should be seated in the correct pattern and orientation, ensuring the blocks are snug against the surrounding ones. After laying out the blocks, they may need readjustment to sit flush with the existing surface. Using a rubber mallet, lightly tap the blocks into place, confirming the surface remains level with a spirit level.

Ensuring the blocks are level and stable before proceeding to the joint-filling stage. The jointing sand, which serves the dual purpose of filling gaps and locking the system together, contributes to the pavement’s overall stability and can only be applied effectively to a level surface.

Refilling joints and applying finishing touches

Jointing sand becomes the next vital ingredient once the new blocks are firmly in place. Its application is not merely pouring and sweeping; precision matters. One begins by sprinkling sand over the freshly laid blocks and using a broom to sweep it into all the gaps. Compacting with a plate compactor is recommended to ensure the sand settles properly. This helps in distributing the sand evenly, filling any voids that are not visible to the naked eye.

Following this initial pass, more sand is added to top up any joints that appear less than full. The meticulous process repeats, ensuring all spaces between the blocks are packed tight. It’s important not to skimp on sand as it’s the locking agent that contributes to the structural integrity of the paving.

After the joints are filled, a leaf blower can clear away excess sand from the surface. This ensures a clean final appearance and prevents any surplus sand from hardening on top of the blocks, which could spoil the aesthetic result.

Notably, block paving is not complete without addressing edge restraints. These elements play a crucial role in keeping the pavers from shifting. Before considering the job done, it might be necessary to check that existing restraints are secure or install new ones.

The correct use of sealant adds a protective layer against stains and enhances the colour contrast of the paving blocks. However, one must wait for the sand to settle and the blocks to be completely dry before applying the sealant; this can take several days.

Optimal maintenance includes brushing and rinsing the paved area regularly and checking for signs of movement or subsidence. Immediate attention to any issues will sustain the pavement’s condition and appearance in the long term.


Repairing block paving is a manageable task that can significantly enhance your outdoor space’s aesthetics and durability. Precision in refilling joints and using a plate compactor are crucial steps to ensure a solid, even surface. Remember, allowing the sand to settle and the blocks to dry thoroughly before sealing is essential. With these tips, your paving will look impeccable and stand the test of time. Don’t forget regular maintenance is key to preserving the beauty and integrity of your block paving.