Chemwash Top of the South

New Zealand's Leading House Wash & Exterior Cleaning Company

Residential & Commercial Soft Washing Experts

We Soft Wash Buildings, Home Exteriors & More

Locally owned and operated, Chemwash was the first New Zealand company to utilise soft washing cleaning methods. Soft washing is a low-pressure technique that uses specialised detergents to remove dirt, grime, and buildup. The low-pressure system is specialised for house washing and cleaning of all exterior surfaces. We provide comprehensive cleaning services for residential and commercial properties, including buildings, shopfronts, concrete washing, paths, gutter cleaning, roof treatments, fences, wooden decking, and outdoor structures. We’re proud to be House Washing Nelson experts, also servicing Blenheim, Marlborough Sounds, Golden Bay, St Arnaud across onto the West Coast.

Our environment is full of microscopic organisms that can cause unsightly buildup and growth on the exterior of your property. To prevent your outdoor surfaces from being compromised, it’s important to have them soft washed to remove these spores. This not only extends the life of your surfaces but also helps to protect your health by eliminating harmful bacteria.

Our Chemwash Cleaning System provides specialised sanitisation, which effectively cleans and disinfects all exterior surfaces, helping to eliminate algae, spores, and viruses. We can ensure zero face-to-face contact throughout the process to protect our community’s most vulnerable.

Chemwash Top of the South employs locally, and now is the time to support local businesses. Request your free quote today. Stay safe, and be kind to one another.

About Us
About Us

We are experts in soft washing and maintaining your property, whether it’s your home sweet home or large commercial building.

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Request a Quote

Have you got a query? Contact us and let's have a conversation.


We use a low-pressure system for residential and commercial exterior cleaning.

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What our clients are saying


Atawhai, Nelson

Thank you for your prompt service, your boys are so polite and helpful in moving my pot plants before the house wash.