Every spring the same discovery: the patio that went grey-green over winter, the brick path slick enough to skate. The machine that fixes it in an afternoon can also scar soft stone, blast joints hollow and shred the border planting, which is why the trigger deserves judgement.
Gemzas Garden Maintenance and Landscaping runs high pressure cleaning for patios and bricks across Sevenoaks gardens, and this is the damage-free version of the transformation.
Pressure matched to the surface
Surfaces have constitutions: concrete and dense modern paving take firm pressure happily; clay brick asks moderation, especially older soft-fired paths; Indian sandstone bruises under a tight lance, wand-marks etched forever by an over-keen pass. The fan width, distance and pressure are chosen per surface, not per habit.
The photograph's wet sandstone mid-clean shows the method: wide fan, even passes, the surface brightening without a single lance stripe. Clean is the easy half; unmarked is the craft.
- Concrete firm, brick moderate, sandstone gentle.
- Wide fans and even passes, never tight lances on soft stone.
- The test patch in a corner before any full clean.
Why shade regrows the green
The film is biology with a postcode: algae and moss colonise wherever surfaces stay damp, which in a Sevenoaks garden means the shaded returns, north-facing terraces and anywhere overhung. Cleaning resets the surface; the conditions decide the rebooking date.
The gardener's advantage is treating causes alongside symptoms: crowns lifted or hedges thinned where the garden can spare the shade, leaf-fall cleared before it composts on the slabs, and drainage or falls corrected where water lingers. A patio that dries fast stays clean longest.
- Damp shade is the film's habitat.
- Light and airflow lengthen the clean.
- Leaves off the slabs before they feed regrowth.
Protecting joints and planting
The wash's collateral is avoidable: jointing sand blasted out unless the lance respects the lines, mortar joints opened where they were already tired, and borders flattened by runoff and spray. Method keeps all three safe, angles along joints rather than across, tired pointing noted rather than excavated, planting sheeted or rinsed clear.
The finishing discipline is Gemzas Garden Maintenance and Landscaping standard: block-paved areas re-sanded once dry, any pointing that failed flagged honestly for repair, and the garden left as tidy as the slabs. A clean that costs the joints was not a clean; it was a loan.
After the wash: sealing and the calendar
Freshly cleaned and fully dried surfaces take sealant well where owners want longer intervals: it slows staining and regrowth on patios and brick alike, at the price of reapplication seasons later. On shaded stone it earns its keep; on sunny concrete it is optional polish.
The honest calendar suits most gardens: a proper spring clean, a light autumn attention where leaves gather, and the in-between kept by brushing. Bundled into the maintenance rhythm, the surfaces simply stop being a spring shock.
Related pages
Questions customers ask
Will pressure washing damage Indian sandstone?
A tight lance can mark it permanently: soft stone wants wide fans, sensible distance and even passes. Cleaned that way it brightens beautifully without a stripe.
Why does my shaded patio green up so fast?
Because damp shade is the algae's habitat: it recolonises wherever surfaces stay wet. More light and airflow, cleared leaves and quick-drying falls stretch every clean.
Do joints need attention after pressure cleaning?
Block paving needs re-sanding once dry, and any tired mortar the wash exposed should be repointed rather than ignored. Protecting joints during the clean keeps both jobs small.
Match the pressure, respect the joints, treat the shade, finish the sand: that is the patio transformed without a scar to show for it.
Gemzas Garden Maintenance and Landscaping cleans Sevenoaks patios and brickwork with a gardener's judgement. The contact page books the spring reset.
