External Window Cleaning in Perth: Methods, Costs and What to Expect

External windows in Perth face a daily assault of dust, pollen, bird droppings, spider webs, and — in coastal areas — salt spray. Professional external window cleaning restores clarity and protects glass long-term. Here's what to know.

Purified Water Systems vs Traditional Cleaning

The gold standard for external window cleaning in Perth is the pure water / water-fed pole system. Tap water is filtered through reverse osmosis and deionisation (RO/DI) to remove all minerals. This ultra-pure water is fed through a brush on an extendable pole, scrubbing the glass and frames. When it dries, pure water leaves no spots or streaks — unlike tap water, which leaves mineral deposits. This method is safer (no ladders for accessible windows), faster, and produces superior results on modern double-glazed windows.

Traditional method (squeegee and solution) is still used by many operators and works well, particularly for single-pane glass. The skill of the operator is more critical with traditional methods — a good squeegee technician can produce excellent results.

What's Included in External Cleaning?

A standard external clean covers the glass, frames (aluminium or uPVC), sills, and tracks. Screens are sometimes extra — confirm before booking. Cobwebs around window surrounds are usually removed as part of the service.

Frequency in Perth

Most homes benefit from external cleaning every 6–12 months. Coastal homes within 5km of the ocean need more frequent cleaning — every 3–6 months — as salt spray builds up quickly and, if left too long, can etch into glass. Homes near construction or dust-prone areas may also need more frequent cleans.