About Us

New Zealand's leading building and house wash exterior cleaning company.

Chemwash History

Chemwash Cleaning was formed in 1981, with the goal to utilise low pressure and environmentally-friendly detergents in the exterior house cleaning industry. We were the first company in New Zealand to use this approach, and have remained pioneers in exterior cleaning to this day.

Our unique detergents were developed by a leading industrial chemist to be effective for all exterior surfaces, yet completely safe for use in the environment, and around people and pets.

Chemwash continues to grow and develop, improving our detergents and processes as we go. We are now the largest exterior cleaning company in the country, with over thirty local owner operators spread across most regions of New Zealand.

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Licensed Agents

Each Chemwash branch is operated with qualified, licensed agents, who have passed a series of stringent conditions and checks, including police background checks.

Chemwash is also fully insured, and we strive to offer the most up-to-date cleaning practices in the industry. All Chemwash staff undergo ongoing training in maintaining a safe and healthy workplace for customers. Many are ITO certified in height and fall arrest systems.

We ensure quality service through customised product and equipment application, regular inspections, and of course, our quality guarantee.

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Low Pressure Cleaning

The Chemwash Low Pressure system is specialised for cleaning all exterior surfaces safely, without sacrificing great results. Our fan spray nozzles eliminate the possibility of damage to surfaces, unlike high pressure water blasting which brings a much higher risk. Low pressure washing also uses a lot less water. This means that the Chemwash system is not only safer, but also better for the environment.

Low pressure cleaning involves firstly applying our environmentally friendly detergents, and then rinsing off with a low water pressure of about 600-1000psi (compared with 2000-5000+psi for a lot of water blasters). The detergent does most of the ‘hard work’ when it comes to the cleaning, rather than relying on sheer pressure. This means we can still produce fantastic results, with no risk of harming your surfaces.

Maintenance programmes may also include ‘Spray & Leave’ treatments for roofs, concrete cleaning, or house washing for mould & lichen. These treatments work with the weather, naturally reactivating whenever it rains, providing long term protection and results.

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We would love to hear what you think of our service

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      You are always assured of our best service and a top-quality job. Our workmanship and your satisfaction are fully guaranteed.

      What Our Clients Are Saying

      Jan

      Rotorua

      ⭐⭐⭐⭐⭐ - Chemwash Rotorua did a fantastic job at our property - looks fresh & will get even better with time! Also want to acknowledge Karen - she was communicative & responsive to our questions. Highly recommend this company.