Patio & Driveway Cleaning Specialists Serving Alnwick
Get your patio in Alnwick properly treated for black spot lichen and cleaned to an even finish. Free, honest quotes from Annual Cleaning Solutions today.
The honest answer is that pressure washing on its own won't solve it long-term. Lichen has a root structure that grips into sandstone and limestone, so it needs a biocide treatment to kill it off before any cleaning happens, otherwise it's back within months.
It's not just about how it looks on the day either. Treating lichen properly rather than just pressure washing it means the result actually lasts, and a sensible sealing conversation afterwards protects the finish through the next few wet seasons.
Indian Sandstone
- Indian sandstone is porous and slightly variable in hardness between batches, which means it can hold onto black spot lichen and algae stains more readily than denser stone. It responds well to biocide treatment followed by gentle steam or low-pressure cleaning rather than high pressure, which can strip the natural texture off the surface.
- Sealing is often worthwhile on sandstone once it's clean and dry, as it helps resist future staining and makes the next clean considerably easier.
What a Proper Clean Actually Achieves
The result we're aiming for is a patio that's genuinely even in colour, with the black spot lichen dead and gone rather than just faded, joints cleared of moss, and no streaking left behind from the wash itself.
That result comes from the order we work in - treat, wait, clean, rinse - rather than any single powerful tool. A biocide treatment followed by the right pressure for the material is what gets a lasting result, and sealing afterwards, where appropriate, helps keep it that way.
Modern Estate Patios
Newer builds around Alnwick more often have Indian sandstone, porcelain or block paving laid within the last decade or two, usually with better drainage falls than older properties. That means less standing water, but black spot lichen can still establish quickly in shaded corners near fences and conifers.
Because the stone is younger, sealing is often a realistic option here - a treated, cleaned and sealed modern patio can stay looking close to new for several seasons if the joints and surface are in good condition to start with.
Side Passages, Steps and Tight Access
Not every patio is reachable in a straight line from the road - side passages, steps down to a sunken garden, or a shared access path all change how a job's approached. We ask about this at quoting stage so there are no surprises on the day.
Longer hose runs or hand-carrying equipment through a tight passage can add a little time, which we'll factor honestly into the price rather than springing it on you afterwards.
What Actually Moves the Price
Four things drive most of the variation in a quote: the total area, the material (porous stone generally needs more treatment time than porcelain), how established the lichen or algae is, and access - a patio reachable straight off a driveway costs less to work on than one down a narrow side passage with everything carried through by hand.
| Straightforward access, light growth | typically at the lower end of our range |
|---|---|
| Restricted access or heavy growth | typically £20-£80 more |
| Combined patio + block paving driveway | often quoted as one job, ask for a combined price |
Covering Alnwick and the Surrounding Area
We work across a roughly 45-mile radius of our Washington base, which takes in Alnwick and the towns and villages around it as part of our regular schedule rather than a special trip.
That regular coverage means we can often fit patio work in Alnwick around other jobs nearby, which keeps things efficient and flexible on timing.
Patio Cleaning near Alnwick
Patio Cleaning in Alnwick — common questions
A patio in Alnwick covered in black spot lichen or green algae doesn't need replacing - it needs treating properly before it's cleaned. We handle sandstone, limestone, porcelain, concrete flags and block paving, with honest advice on sealing and re-pointing where it's actually needed.
If your patio's looking patchy, dark or slippery, it's very likely lichen or algae rather than anything more serious, and it's fixable. We treat it properly, clean it thoroughly, and tell you honestly if anything else - like re-pointing - needs attention.
Get Your Patio Looking Its Best Again
Damp weather is exactly when black spot lichen spreads fastest - get it treated and cleaned now before it takes hold across the whole patio.
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