We often get asked if professional pressure washing services are safe for block paving, and the most straightforward answer is yes – but there are conditions.

What is pressure washing?

High-pressure washing, or jet washing as some like to call it, relies on an intense jet of water which quite literally blasts away dirt, mould, moss and algae, lichen from exterior surfaces. While power washing is famous for its low environmental impact, using moderate pressure and heated water, it can sometimes acknowledge as a more expensive option, with many reaching out to professionals who possess the equipment and the know-how to do a good job.

What do we need to know before deciding to pressure wash our paving?

• Regular use can do more damage than good.
• The flow of water can – and should – be altered depending on the area to wash.
• Always test the flow before pointing it at your block paving.
• Clear away as much debris as you can before turning on the pressure washer.
• A professional will do the job quickly and safely – and could save you money. (Read on to find out how!)

A professional pressure washer will already be aware of these conditions and the ways around them. Mainly, the fee you pay them will not only be for their time but also their knowledge and expertise.
After all, you may think it cheaper to give pressure washing a go yourself, but if anything goes wrong and you end up damaging your block paving, the expenses for repair could be huge.
And this leads perfectly into the first condition of pressure washing your block paving. Don’t use it too regularly, and make sure you aren’t placing too much emphasis on a particular area for too long.

The high-pressure water jet can displace block paving and disrupt the foundations, creating cracks, breaks and an uneven surface which may be dangerous in the long run.
The best way to combat this is to first alter the jet stream of the washer, to the gentlest flow possible. The nozzle on most models is easily adjustable, so choose an area to test it on before turning to your block paving, and ensure you are happy with the flow of the water before starting.

Another pre-pressure washing tip is to sweep the block paving first, clearing away any debris.
And finally, the essential rule of pressure washing block paving – keep the jet angled at 30 degrees, allowing the water to hit and bounce off the surface in one fluid movement. An angle more direct than this will prove too powerful and ultimately cause that damage we previously discussed.

Should I do it myself or pay a professional?

In short, you can pressure wash your driveway yourself, or you can bring in a professional. But remember, the power of a professional is much more than just saving yourself time and hassle – you could be saving yourself some damage fees as well. Make sure you know the technique before picking up the hose!