Render & Wall Cleaner
Restore the clean, crisp appearance of your home’s exterior with Brook & Bramble Render & Wall Cleaner — a powerful, chlorine-based formula designed to remove green algae, black mildew, and environmental staining from vertical surfaces.
Ideal for painted walls, rendered finishes, stone, and brickwork, this treatment works quickly to break down organic build-up and brighten tired exteriors without the need for aggressive scrubbing. Whether you’re freshening up before painting or tackling unsightly algae streaks, our cleaner offers fast, visible results with minimal effort.
Revive Vertical Spaces, Gently.
Discolouration and weathering often show first on walls and render. This cleaner is designed to lift stains from vertical surfaces without streaking or harsh runoff. Perfect for garden walls, outdoor buildings, and architectural details, it restores brightness with a controlled, careful finish.
- Rendered walls (e.g. K-Rend, Monocouche)
- Painted masonry and concrete
- Stone and brick façades
- Garden walls, outbuildings, and boundary surfaces
Removes algae, mildew, and staining from exterior walls
Brightens dull or weathered render quickly and safely
Clings to vertical surfaces for effective dwell time
Easy to apply with a sprayer or brush
No pressure washer needed (but compatible for enhanced results)
- Dilute 1 part cleaner with up to 3–4 parts water. For heavy staining, apply neat.
- Apply generously to dry surfaces using a low-pressure sprayer or soft brush.
- Allow to dwell for 30–60 minutes, keeping surface damp during this time.
- Rinse thoroughly with clean water. For best results, follow up with a soft brush or hose.
- Wear gloves and eye protection when handling.
- Do not apply in direct sunlight or to hot surfaces.
- Avoid contact with plants, painted wood, or glass – rinse off immediately if splashed.
- Store upright in a cool, well-ventilated place out of reach of children and pets.
Always test on a small, inconspicuous area before full application, especially on coloured or delicate renders.
Restore the Walls & Then What’s Around Them
