How Often Should You Wash Your House in New Zealand?
New Zealand’s weather can take a toll on your home’s exterior. Rain, humidity, shade and changing temperatures can contribute to the build-up of mould, algae, dirt, cobwebs and other organic growth on exterior walls, eaves, soffits and window frames.
Regular exterior house washing helps keep your property looking its best while removing the grime that gradually builds up over time. But how often should you wash your house, and what is the best way to clean it?
How Often Should You Wash Your House?
For most homes in New Zealand, an exterior house wash every 12–24 months is a reasonable starting point. However, the ideal frequency depends on your property’s location, surrounding vegetation, exposure to moisture and the type of exterior cladding.
You may benefit from more frequent house washing if your property is surrounded by trees, receives limited sunlight, is exposed to coastal conditions or develops mould and algae quickly.
Regular maintenance can help prevent heavy build-up and keep your home’s exterior looking clean throughout the year.
Why Does Your House Develop Mould and Algae?
Mould, algae and grime commonly accumulate on exterior surfaces exposed to moisture and limited sunlight. You may notice green growth on shaded walls, dark streaks beneath windows, cobwebs around eaves or dirt collecting around downpipes and exterior fittings.
These areas can gradually make your property look tired and neglected.
Professional exterior house cleaning removes much of this surface build-up and helps restore a fresher appearance. Regular cleaning also makes it easier to manage organic growth before it becomes more established.
What Is Soft Washing?
Soft washing is a low-pressure cleaning method that uses suitable cleaning solutions to help remove dirt, mould, algae and other organic build-up from exterior surfaces.
Unlike high-pressure water blasting, soft washing relies on low-pressure application rather than forceful water pressure. This makes it a suitable approach for many residential house washing jobs when the correct cleaning method and solution are selected for the surface.
At Metro Water Blasting, we specialise in exterior cleaning, including low-pressure chemical house washing. Our approach is designed to clean the outside of your home without unnecessarily relying on high pressure.
What Does a House Wash Include?
A standard house wash can help clean the main exterior walls and surrounding exterior fittings, including:
- Exterior walls and cladding
- Exterior windows
- Eaves and soffits
- Spouting and downpipes
- Cobwebs and general surface grime
The exact scope depends on the property and the agreed service. Roofs, gutters, driveways, decks, fences and other additional areas may require separate cleaning services.
If you’re looking to freshen up more than just the exterior walls, ask about combining your house wash with other exterior cleaning services.
Get More Done With a House Washing Package
If your property needs more than a house wash, combining services can be a convenient way to maintain your home’s exterior.
Metro Water Blasting can help with additional services such as:
Roof treatment: Helps control moss, mould and lichen, with the roof gradually becoming cleaner over time.
Gutter cleaning: Removes accumulated leaves and debris to help restore proper water flow.
Driveway and concrete cleaning: Removes built-up dirt, grime and organic growth from suitable hard surfaces.
Combining services can help you tackle several exterior cleaning jobs as part of one visit. Contact our team to discuss your property and the most suitable options.
When Is the Best Time to Wash Your House?
House washing can be carried out throughout the year, depending on weather conditions and the requirements of the property.
Spring is a popular time to remove the grime accumulated over winter and prepare your home for the warmer months. Summer is also a good opportunity to freshen up exterior walls, windows and outdoor entertaining areas.
Rather than waiting until the build-up becomes heavy, regular exterior house cleaning can help maintain your property’s appearance all year round.
Book Your House Wash With Metro Water Blasting
Whether your home has developed mould, algae, cobwebs or general exterior grime, Metro Water Blasting can help bring it back to a fresher, cleaner appearance.
We provide exterior house washing and soft chemical washing services across our service areas in New Zealand, with local teams ready to help.
Contact Metro Water Blasting today for a house washing quote. Ask us about combining your house wash with roof treatment and gutter cleaning for a convenient exterior cleaning package.
Get your home looking its best with Metro Water Blasting.