Can you clean K-rend?

Yes. K-rend is soft washed with biocide and rinsed at low pressure — never pressure washed, since the coloured finish is thin enough to be damaged by force.

What causes the green staining on my walls?

That's usually algae, which establishes on damp, shaded render and brick. It's cosmetic rather than structural, but it does spread if left, which is why we treat the growth with biocide rather than just rinsing the surface.

Will the biocide harm my plants or pets?

We cover or move planting before we start and are spill management trained to handle and dispose of chemicals properly, minimising any risk to plants, pets or the surrounding area.

Do you offer a free quote?

Yes — send a few photos or ask for a site visit and we'll give you a proper quote based on render type, size and access, with no obligation.

Can render cleaning be done in winter?

Yes, as long as it's above freezing and dry enough on the day — biocide needs to dwell on the surface rather than be washed off by rain straight after application.

How do I book a render or brick clean?

Call Trevor on 07501 060609 or send a few photos of the property — we'll give you a quote and get a date in the diary.

Algae, Lichen & Black Streak Removal — Gosforth

Gosforth render cleaning specialists. Soft wash treatment for K-rend, monocouche, pebbledash and sand-and-cement render, plus brick and steam cleaning.

07501060609 Get a free quote

Get Your Free Quote!

Enter your details below and one of our experts will be in touch to discuss the work needed and give you your free no-obligation quote.

Call Trevor on 07501 060609 for a quote based on elevation size, render type and access, or ask for a free look at the property first if you're not sure what you're dealing with.

We check the render system before we touch it, then treat Gosforth properties with biocide soft washing and steam where it's needed, so the finish comes back clean without putting the coating itself at risk.

That's the difference soft washing makes. Biocide does the work of killing algae, lichen and black fungal growth, and a gentle low-pressure rinse finishes the job without disturbing the render coat or the brick pointing underneath it.

Our coverage area

We work across roughly 45 miles from our Washington base, which takes in Gosforth and the towns and villages around it comfortably. Render and brick cleaning doesn't need to be a local specialist-only job, and we bring the same soft wash standard wherever we go.

Gosforth, Tyne and Wear — 12 neighbouring areas plotted within 5.6 miles. Distances are straight-line from Gosforth centre.

Render & Brick Cleaning (Soft Wash) near Gosforth

Proof, not just promises

Before-and-after photos: Every job documented so you can see exactly what changed.
Biocide trained (2024): Treatment applied to a proper standard, not a quick spray-and-go.
Fully insured: Covered work from a trained operator, not a side gig.
Spill management trained: Runoff and product handled responsibly around your property.

The biocide and methods behind a proper render clean

The core of a proper render clean is the biocide treatment — a professional-grade solution applied to kill algae, lichen and the black fungal growth that causes streaking, rather than just washing the surface growth away.

We're biocide trained (2024), so application rates and dwell times are matched to the render type and how bad the growth actually is, not a standard spray-and-rinse. Steam is used where black staining on brick needs extra lift, and low-pressure rinsing finishes both render and brick without disturbing the surface underneath.

Our standard render and brick cleaning process

1
Survey
We check the render type, growth level and any existing cracking or damage before quoting.
2
Protection
Windows, doors, plants and any nearby vehicles are covered or moved clear.
3
Biocide application
Biocide is applied to kill algae, lichen and black fungal growth at the surface.
4
Dwell time
The treatment is left to work into the growth — rushing this step is where poor results come from.
5
Low-pressure rinse
Dead growth is rinsed away at low pressure, never with a pressure washer on render.
6
Final check
We walk the elevations with you, or send photos, to confirm the finish before we leave.

Protecting what's around the property

Before any biocide goes on, we cover or move planting, garden furniture and anything nearby that shouldn't come into contact with it. We're spill management trained, so runoff and unused product are handled and disposed of properly, not left to find their way into drains or beds.

Access for commercial and multi-site jobs

For larger or commercial properties near A167, we plan access and parking in advance so equipment can be set up without disrupting deliveries, customers or shared yards.

Render & Brick Cleaning (Soft Wash) in Gosforth — common questions

We soft wash render and clean brick across Gosforth, using biocide treatment and low pressure to lift algae, lichen and black streaking without risking the render coat or old mortar. Fully insured and biocide trained (2024) — get in touch for a quote.

From Victorian brick terraces to modern K-rend estates, we adjust our soft wash approach to what's actually on the wall. Fully insured, biocide trained (2024), and covering Gosforth and the surrounding area.

Algae, lichen and black streaking don't need a pressure washer to shift — they need the right biocide treatment and a bit of patience. That's what we bring to every render and brick job in Gosforth.

A cleaner home without the risk

Algae and lichen only get more established the longer they're left — the sooner it's treated, the less work it takes to put right. Book your soft wash now.

Get started Call 07501060609

Render & Brick Cleaning (Soft Wash) in Gosforth — the elevation part-way through treatment, in the Newcastle upon Tyne area

Render & Brick Cleaning (Soft Wash) in Gosforth — the finished render drying in the sun, in the Newcastle upon Tyne area