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Cleaning and Sealing Block Paving


Why Block Seal?

Over time, block paving can become faded, develop stains and even start to become overgrown with weeds. Cleaning your block paving can restore it to its original appearance but for a lasting result the paving should be cleaned and sealed with Block Seal.

Block Seal is an easy-to-apply resin that gives a smart semi-gloss finish, whilst binding together the sand grains in the joints. This helps to strengthen the paving and also slows down the growth of weeds in the joints between the blocks. In addition if you get oil spills from a vehicle it can be easily wiped clean.


Cleaning Your Paving

The surface should be thoroughly cleaned of all dirt and debris, which can be removed using a stiff brush and pressure washer (it is possible to hire one if you don't own one yourself). 

Weeds, grime, moss, algae, lichens should be removed using a fungicidal wash and then left to dry

To ensure the best possible finish, the joints in between the blocks should be filled with clean and dry compacted sand up to the bottom on the chamfer and then swept clean. The block paving should be completely dry before you apply Block Seal.

Applying Block Seal

You can apply the sealant with a roller but a paint brush is often required for those hard to reach areas.

Apply Block Seal sparingly and don’t allow the product to gather in the joints or settle on the blocks. 

The surface should not be brought back into use until the sealant is completely dry.

Note: you should only apply Block Seal in temperatures above 10°C and when rain is not expected for at least 24 hours, as the sand in the joints should not get wet.