Render on Irish properties often shows dark streaking and green growth after repeated cycles of wind-driven rain and coastal salt exposure. Cleaning addresses the surface layer without damaging the underlying finish, which is especially relevant where older sand-and-cement or acrylic renders meet modern insulated systems.
Customers typically request the service when staining becomes visible on gables or when damp patches appear after storms. The work can include low-pressure washing, biocide application to control regrowth, and careful removal of mineral deposits that collect on north-facing walls common in the region.
Scope depends on render age, texture, height and how sheltered or exposed the elevation is. Agricultural sheds, retail units and houses all appear on the same routes because the same weather patterns affect them.
Access, water runoff control and protection of adjacent surfaces are planned before any equipment is set up. The job finishes once the surface is rinsed and any excess moisture has been managed to limit immediate re-soiling.
Technician insight
In Galway, the thing that catches most people out with Render Cleaning is how the combination of heavy Atlantic rain and older single-skin walls lets moisture sit behind the surface, so algae returns faster than on newer insulated renders.
Render Cleaning Services We Offer
✓Soft Washing Render
Low-pressure application of approved wash solutions to lift moss and algae without forcing water into the substrate.
✓Algae and Moss Removal
Targeted treatment and brushing of biological growth on roughcast and smooth renders.
✓Efflorescence Cleaning
Removal of white salt deposits that appear on new or repaired render after wet periods.
✓Render Sealing After Cleaning
Application of breathable sealer once the surface is clean and dry to slow future staining.
✓High-Reach Render Cleaning
Use of telescopic poles or safe access methods on two- and three-storey elevations.
✓Agricultural Building Render Cleaning
Cleaning of external walls on sheds, milking parlours and outbuildings where feed dust and rain combine to mark surfaces.
How it works
- 1
Site Assessment
Walk the elevations to note render type, staining patterns, access points and any nearby planting or drainage that must be protected.
- 2
Preparation
Mask windows, doors, pipes and ground surfaces, then set up water capture where required by local runoff rules.
- 3
Cleaning Work
Apply treatment solution, agitate where needed, and rinse using controlled pressure suited to the render texture.
- 4
Final Check and Tidy
Inspect all elevations, remove protection, and confirm runoff has been directed away from foundations.
Pricing
Scope and cost are influenced by property height, render texture, extent of growth and site access.