Block Paving driveways can look great and an asset to any home if the paving that has been properly laid and regularly maintained.
But most individuals who have this particular surface in the home do not recognize the upkeep that is required to maintain it appearing at presentable, or rather in it is a best possible condition.
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Homeowners pay a good deal of cash to have these kinds of pavers set up, therefore it isn't sensible to leave the paving before it's coated in dirt and weeds until regular maintenance is performed.
Before cleaning the deck or driveway pre-treating the region using a weed killer will look after weeds, and healing with a fungicidal wash will look after algae, moss, lichen and so forth.
If these exist then it is important they are pre-treated otherwise once you use a power washer or you'll be just carrying the heads of those growths and departing the origins behind, this normally implies a few weeks after they'll be growing back more powerful than ever.
Cleaning it with a high-pressure water jet may work wonders in eliminating all the aforementioned and departing the paving looking like new. A note of warning, block paving needs to just really sometimes be pressure washed since this may undermine the sand bed the block paving is put on causing it to sink.
That is the reason I would always recommend sealing the block paving after it's cleaned to ensure any prospective cleaning requires just a hosing down rather than a vigorous pressure washing machine.