Exterior Building Cleaning

Protect your brand image and property value by providing a clean & safe working environment for your workers, customers and visitors.

Regularly cleaning the exterior of your premises is critical for property maintenance. Our building cleaning services are designed to keep buildings clean, safe and preserve the structural integrity of your building, giving you a clean and safe environment for your workers, customers and visitors.

Over time, building exteriors can accumulate dirt, pollution, algae, mould, bird droppings, and other contaminants that can degrade materials, diminish the building’s appearance, and even impact property values. Regular exterior cleaning not only enhances the appearance but also helps extend the life of the building materials, protecting them from environmental damage and reducing the need for costly repairs.

Our commercial building cleaning is suitable for,

  • For All Workplaces

  • Factories & Commercial Buildings

  • Retail Outlets & Shopping Centres

  • Schools, Public & Community Centres
  • Industrial buildings

building exterior
working at heights

Multi-Storey (Heights Certified) Cleaning Services

Safety is our #1 Priority. All work provided by Dunbar Services is strictly done to Australian Standards and Worksafe Australia. In high-rise commercial properties, our trained and licensed professionals often use suspended platforms or scaffolding to access the upper floors safely. Where necessary we can install anchor points and height safety access equipment.

  • High Level pressure cleaning for multi-storey buildings and office towers

  • Multi storey and office tower exterior window cleaning

  • Multi storey storm water drainage system cleaning

  • Multi storey gutter & downpipe cleaning

Commercial Building Exterior Cleaning Services

Building Facade Cleaning & Building Washing

Our building washing services provide a comprehensive cleaning solution that includes the façade, windows, and other exterior surfaces like walkways, canopies, and signage. This service often combines low-pressure washing with eco-friendly detergents to safely clean large surface areas, removing dirt, mildew, and organic matter.

Building facade cleaning focuses on the visible, outer surfaces of a building, such as walls, windows, and architectural details. It typically involves specialised techniques to remove dust, grime, and pollutants without damaging the surface. Cleaning methods vary depending on the façade material (e.g. glass, stone, metal, or concrete), with each requiring specific cleaning solutions and methods to achieve optimal results.

Commercial building washing is particularly beneficial for maintaining brand image, as a well-kept building communicates professionalism and attention to detail. This service can be scheduled as a routine maintenance practice or on-demand to address seasonal buildup or after extreme weather events that may leave a building looking dirty or weathered.

Regular façade cleaning not only improves the building’s visual appeal but also prevents the buildup of contaminants that can cause long-term material degradation.

Exterior Pressure Washing

Pressure cleaning, or power washing, is a highly effective method for removing stubborn stains, algae, mould, and graffiti from a building’s exterior. High-pressure water jets are applied to the surfaces, lifting off dirt and contaminants quickly and efficiently.

Exterior building pressure washing is ideally suited for,

  • Brick Building Cleaning
  • Sandstone Building Cleaning
  • Concrete Panel Wall Cleaning
  • Cement Render Cleaning

Pressure cleaning is commonly used on durable surfaces like concrete, brick, and certain types of building facades. However, it requires a skilled hand to ensure the pressure is appropriately adjusted for each surface type to avoid damage. By removing contaminants that could contribute to material wear and deterioration, pressure cleaning is not only beneficial for appearance but also plays a role in preserving the structural soundness of the building.

Chemical Stripping

Chemical stripping is a process used to remove paint, coatings, or other surface treatments by applying a chemical agent to a substrate. In the case of painted metals like steel, chemical strippers are commonly used to dissolve and loosen the organic binders within the paint, effectively breaking the bond between the paint and the metal surface. The chemical agent is usually applied as a liquid or gel, then left to dwell for a specified period to penetrate the layers of paint. During this dwell time, the chemicals react with the paint’s binders, weakening the structure and making it easy to scrape or wash off. This method can be especially effective on complex surfaces where abrasive methods may struggle to reach or could damage intricate details.

Once the chemical stripper has sufficiently softened the paint, the residues are removed, often by scraping or pressure washing, leaving the bulk of the paint and stripper residues off the surface. After stripping, it’s essential to neutralize any residual chemicals to prevent potential issues in later stages, especially when repainting is planned. This cleaning process often involves washing the surface with water, solvents, or specialised neutralisers to remove any lingering chemicals that might otherwise interfere with new coatings or affect the substrate’s integrity over time.

While highly effective, chemical stripping does require proper ventilation, personal protective equipment (PPE), and disposal procedures, as the chemicals involved can be hazardous to both health and the environment.

Commercial Window Cleaning Services (Interior & Exterior)

Clean windows can make a significant difference in creating a welcoming atmosphere for clients, tenants, or visitors, and can even help reduce lighting costs by allowing more sunlight to enter the space. Commercial window cleaning is an essential service for businesses looking to maintain a clean, professional, and welcoming appearance. Over time, windows can accumulate dirt, dust, fingerprints, smudges, and water spots, which can obstruct natural light, diminish views, and create an unappealing look. Both interior and exterior windows require regular cleaning to maintain the overall aesthetic and functional quality of a building.

Interior window cleaning typically involves removing smudges, fingerprints, dust, and other particles that settle on the inside surfaces. Our professional window cleaners often use a combination of microfiber cloths, squeegees, and non-toxic, streak-free cleaning solutions to produce a clear, polished finish without leaving residue or streaks. This service can include cleaning frames, ledges, and blinds, which are also prone to collecting dust and grime. Regular cleaning of interior windows not only keeps spaces looking bright but also contributes to a healthier environment by reducing dust and allergens that can accumulate on the glass.

Exterior Window Cleaning

Exterior window cleaning is more complex due to environmental factors like weather exposure, pollution, bird droppings, and hard water stains, which tend to build up on outdoor surfaces. For mulit-storey buildings, we use specialised equipment, including water-fed poles, scaffolding, or lift systems, to safely reach higher windows. Whether performed on a regular schedule or on-demand, our professional exterior commercial window cleaning is an investment in the property’s overall appearance and the quality of the indoor environment.

Gutters, Downpipes & Storm Water Drainage System Cleaning

Cleaning gutters, downpipes, and stormwater drainage systems is a crucial maintenance task in commercial environments, helping to prevent structural damage, water pooling, and costly repairs. Over time, gutters and downpipes can become clogged with leaves, dirt, bird nests, and other debris, which obstructs the flow of water. Without proper maintenance, this buildup can cause overflow during heavy rain, leading to water damage, flooding, and even foundation erosion. Regular cleaning of these systems helps to ensure that rainwater is directed away from the building efficiently and safely. A proactive approach to regular maintenance not only preserves the structure and aesthetics of the property but also reduces the risk of unexpected repairs and costly water damage, making it a wise investment for long-term building maintenance.

Gutter Cleaning

In commercial settings, gutters can quickly accumulate debris, especially in areas with nearby trees, industrial dust, or pollutants. Our professional gutter cleaning service involves removing this debris and inspecting for signs of wear, rust, or potential leaks. Cleaning can be done manually or with specialised tools like gutter vacuums, which are efficient and safer for hard-to-reach areas. For multi-story commercial buildings, we often use ladders, lifts, or even robotic cleaning systems to access and clear the gutters safely. Regular gutter cleaning reduces the risk of overflow, which can cause water damage to roofing, facades, and even the building’s interior.

Downpipe Maintenance

Downpipes are essential for channelling water from gutters to ground-level drainage systems. When downpipes are clogged, they can cause gutters to back up, leading to overflow and potential damage. Our commercial downpipe maintenance services include inspecting for blockages, flushing out debris, and checking connections for leaks or rust. A thorough cleaning schedule can help prevent downpipe clogging, particularly during seasons when leaves, twigs, and dirt are most likely to accumulate. Ensuring downpipes are clear keeps water flowing smoothly away from the building, preventing potential damage to walls, foundations, and landscaped areas.

Stormwater Drainage System Cleaning

Commercial stormwater drainage systems manage larger volumes of water, directing it safely away from the property to prevent flooding and erosion. Over time, these systems can also become blocked with silt, sediment, litter, and organic matter. If not regularly cleared, blocked stormwater drains can lead to overflow and flooding, damaging property and potentially disrupting business operations. Our stormwater drainage cleaning service involves using high-pressure water jets, vacuum systems, and specialised cameras to clear blockages, assess conditions, and ensure all components of the system are functioning properly. Regular maintenance is particularly important before heavy rainfall seasons to minimize flood risks and maintain proper drainage.