Sandstone Patio and Roof Cleaning
Aylesbury, Buckinghamshire

From the air, the roof of this Aylesbury home told the story: moss had settled along every course of its slate-effect concrete tiles, with yellow lichen spreading across the slopes and around the chimney. Left in place, moss holds water against the roof and sheds into the gutters.

At ground level the same growth had taken hold of everything else — the sandstone patio, the stone walls and copings around it, the brick garden walls, the paving and the fencing. Cleaning one surface would simply have left the others to re-seed it.

The brick walls that enclose the garden carried moss along the full length of their copings, with algae on the faces below — exactly where it would wash straight back down onto a freshly cleaned patio.

The fencing, the window sills, the front paving, the pathway and the block paved driveway all needed the same attention, so the house could be finished as one surface rather than a clean patio beside dirty walls.

A powered access platform brought Chiltern Surface Co technicians right up to the roof, close enough to work every tile at the lowest pressure the surface would take and with the most detail possible.

The moss and lichen were cleared at low pressure across both slopes and around the chimney — you can see the cleaned tiles beside the untouched ones — and the roof was protected with Chiltern EverGuard™ once it was clean.

The sandstone was the heart of this job. Soft washing lets the chemistry do the work: Chiltern Surface Co holds a range of treatments and the knowledge of which to use on which surface, and when. That judgement is what separates a clean that lasts from one that looks good for a month.

The black spot was treated and substantially improved, and the stone was cleaned and brightened without being driven at — leaving the surface and its jointing sound. The concrete patio was given a full clean of its own.

Chiltern EverGuard™ is our proprietary surface protection system, with a professional biocide at its heart. It penetrates the pores of the material, kills the growth living inside it and inhibits regrowth. It went on as the final stage, once everything else was clean — to the roof, the sandstone patio, the stone and brick walls and their copings, and the fencing.

It keeps working after it goes on: any remaining black spot continues to die back and weather away over the following weeks, so the surfaces carry on improving after the team has left.

Chiltern Surface Co carried out this project in Aylesbury, Buckinghamshire: the sandstone patio cleaning in Aylesbury, the concrete tile roof, and the walls, fencing and paving around the house. We also offer patio cleaning, driveway cleaning, roof cleaning and roof moss removal across Buckinghamshire, Oxfordshire, Berkshire, Hertfordshire and Surrey, including Goring, Watlington, Cookham and Twyford.

Moss, lichen and black spot live in the pores of a surface, not just on it, which is why a lasting result is a staged process — controlled cleaning, targeted treatment and protection with Chiltern EverGuard™ — rather than a single pass with a pressure washer.