Full House Render Cleaning in Northampton (February 2024)

In February 2024, we completed a full house render clean on a residential property in Northampton. The render had developed green algae buildup and general weathering stains across multiple elevations, leaving the property looking dull and discoloured. We used soft wash methods to clean all elevations and restore a consistent, clean finish.

Project Overview

• Location: Northampton
• Date: February 2024
• Property type: Residential
• Main issue: Green algae and weathering
• Method: Soft wash + rinse

The Challenge

Working in February meant shorter daylight hours and cooler temperatures, both of which affect dwell times and drying. The cleaning schedule had to account for reduced working light while still achieving a thorough result.

Algae had established itself across all elevations of the property - not just the typical shaded sides. Green growth was visible from the front, sides, and rear, meaning every surface needed treatment for the finish to look consistent. The textured render surface required careful pressure control throughout to avoid damaging the finish or driving water behind the render layer.

Our Approach

1. Soft wash treatment applied to all elevations - A cleaning solution was applied at low pressure across every affected surface. The softwash method breaks down algae and biological growth without the risk of high-pressure damage to the render.
2. Controlled dwell time - The cleaning solution was given appropriate dwell time to work through the organic growth before rinsing. In cooler February temperatures, dwell times were adjusted slightly to ensure the treatment was fully effective.
3. Systematic rinse working top to bottom - Each elevation was rinsed methodically from the top down to prevent dirty water from streaking across already-cleaned areas. This top-to-bottom approach is essential for an even, streak-free result.
4. Detail work around windows, doors, and soffits - Areas around window frames, door surrounds, and soffits were cleaned carefully by hand where needed. These detail areas tend to accumulate the most visible staining and runoff marks, so they get extra attention.

Results

The render was restored to a clean, uniform appearance across all elevations. The green algae and weathering stains were fully removed, and the property looked noticeably brighter and fresher from every angle.

Before and After

The project gallery below includes before and after photos showing the condition of the render prior to cleaning and the results after treatment. The difference is most visible on the elevations where algae coverage was heaviest.

Related Services

• Render Cleaning