Restoring Render Without High-Pressure Damage
Modern renders like K-Rend, silicone renders, and traditional wet-dash roughcast are prone to dark organic staining caused by Trentepohlia (red algae), green algae, and lichen. High-pressure jet washing damages the outer render matrix, dislodges aggregate, and forces water into structural cavities.
We utilize low-pressure soft-washing and specialized biocide treatments that target the root system of organic growth, restoring original render colour and providing long-term protection against reinfection.
Our Render Care Process
- Initial Assessment & Surface Inspection: Identifying render composition, structural cracking, and specific algae strains affecting the building envelope.
- Soft-Wash Application: Applying specialized biodegradable biocides that break down organic biofilms safely without abrading the surface.
- Low-Pressure Steam Rinse: Gentle steam rinsing to clear residual biological residue and atmospheric pollution.
- Residual Biocide Protection: Applying a clear, preventative treatment to inhibit future spore germination for extended cleanliness.
Render Types We Treat
- Monocouche & K-Rend Systems: Removing red and green staining while preserving original factory pigments.
- Traditional Roughcast & Pebble Dash: Clearing heavy organic infestation from deeply textured surfaces.
- Painted Masonry Renders: Gentle surface cleaning prior to repainting or to avoid costly redecoration.