Following a thorough jet washing, the block paving will need re-sanding. Sand is important to the stability of block paving; without the sand the block paving will be less stable. The sand also restricts the growth of weeds, which are blown between the blocks from nearby plants. Please wait until the block paving is adequately dry before re-sanding, also ensure it is not raining when sanding. If the block paving or joints are wet the sand clumps up and becomes very difficult to sand.
Type of Sand
90% of the time kiln dried sand is used for re-sanding. As the name says, it is dried in a kiln to remove all the moisture, this makes it perfect for block paving. Whilst also being cheap and easy to use, makes the perfect companion.
There is other more specialist sand you can get, such as those designed to restrict weed growth. Although, from experience these provide limited extra protection, whilst also coming at a premium.
Another, less common sand is coloured sand. These are tinted any colour you request, but are very expensive. Some customers have requested black and grey sands in the past. Although, they do look nice, the customer must weigh up the advantages and disadvantages.
Once the right sand for you is chosen, place bags onto the surface and carefully cut open the bag onto the paving then pour evenly, the next step is to brush in the sand.
Type of Brush
If you are brushing in the sand as a one off, you can choose to use any broom you find at home. Ideally, not the one from the kitchen. If you brush in sand regularly, picking the best brush is essential to saving you time and frustration.
We recommend starting with a squeegee broom. Because of its long flat surface area you can cover the whole block paving quickly and easily. We then follow up with a heavy-duty bulldozer broom. These brooms have a combination of soft and hard PVC bristle. Which are perfect for brushing the sand into those gaps in between the paving. Once all the adequately filled with sand, the perfect tool to finish off the sanding is a petrol leaf blower. The leaf blower removes all the surface sand and last bits on top, leaving a beautiful finish. An extra option is to use a plate compactor to compress the sand a bit further; although we feel this is not always necessary.
In sum, it is essential to re-sand your block paving following a thorough jet wash. We recommend using any broom for a domestic user. Whilst professionals to use a squeegee and bulldozer broom then finish off with a petrol leaf blower. Always use suitable PPE such as gloves to reduce risk of blisters. Whilst goggles to stop sand going in your eyes. For free advice and to book a clean and re-sand called Surrey Jet Washing.