BIODEGRADABLE
Highly Concentrated!
Exterior House Wash Cleaner Concentrate
Concentrated Professional Exterior House Wash Cleaner | Safe for NZ Plants & Gardens
$89.00 Incl. GST $44.90 Incl. GST-50% OFF
Power Up Your Home’s Exterior with Exterior House Wash Cleaner
Superior Dilution Ratio of up to 1 : 40 parts water!
Meet House Wash, the game-changer in exterior cleaning. Our unique concentrated blend of biodegradable chemicals is designed to tackle a wide range of challenges, from greases and oils to stubborn soils, mold, mildew, and dirt. What sets House Wash apart is not only its impressive cleaning power but also its commitment to environmental responsibility. It won’t harm your plants, (contains no bleach or caustic phosphates,) and is gentle on all painted surfaces.
For heavy or stubborn mould, lichen or moss infestations, we recommend using our dedicated Moss and Mould Killer – Highly Concentrated as a safe 2-Step process.
Product Features:
- Comprehensive Cleaning: House Wash takes on a variety of tasks, including exteriors, greases, oils, soils, mold, mildew, and dirt, simplifying your cleaning routine.
- Plant-Friendly: Rest assured, House Wash won’t damage your plants, ensuring a green and vibrant environment.
Advanced Benefits:
- Fungus and Moss Prevention: House Wash goes beyond cleaning; it prevents the re-growth of fungi, lichen and moss, keeping your surfaces cleaner for longer.
- Corrosion Inhibitors: Our Exterior House Wash Cleaner formula contains corrosion inhibitors, safeguarding your surfaces against deterioration.
- Eco-Friendly: We’re committed to environmental safety – Exterior House Wash Cleaner is safe for the environment.
- Concentrated: Dilution Ratio of up to 1 : 40 parts water = Great Value!
House Wash Directions:
Follow these steps to achieve optimum cleaning of your house exterior:
- Step 1: Dilute: Mix 1 part concentrate with up to 40 parts water (1:40).
- Step 2: Apply: Spray the house exterior (bottom to top).
- Step 3: Dwell: Allow the solution to sit for 10 minutes (without drying).
- Step 4: Rinse: Rinse thoroughly with a pressure hose (adjust pressure as needed).
Product Benefits:
- Effortless Cleaning: Say goodbye to tough stains and growths, as House Wash makes cleaning a breeze.
- Plant Protection: Your beautiful plants remain unharmed, thanks to our plant-friendly formula.
- Long-Lasting Results: Enjoy cleaner surfaces for an extended period with built-in prevention features.
- Environmental Responsibility: Contribute to a greener planet with Exterior House Wash Cleaner’s eco-friendly approach.
Quick Specs
| Quick Specs | Details |
|---|---|
| Primary Use: | General House Cleaning (Dirt, Grime, Traffic Film) |
| Dilution Ratio: | Up to 1:40 (Extremely Concentrated) |
| Plant Safety: | 100% Plant-Friendly & Biodegradable |
| Contains: | Corrosion Inhibitors |
| Application: | Safe for all painted surfaces, cladding, roofs, and decks. |
House Wash Usage Cases:
- Cleaning the house’s walls, roof, and decks
- Brightening up driveways, sidewalks, and patios
- Restoring the original look of wooden decks
- Clearing off mold and mildew from outdoor furniture
Typical Application Rate
The typical coverage area for 1 litre of Exterior House Wash Cleaner depends on the dilution ratio and the type of surface being treated. The numbers below are estimates based on standard application rates, which can vary depending on the porosity of the surface and the dirt buildup.
The standard rule of thumb for our diluted Exterior House Wash Cleaner is that 1 litre of ready-to-use solution covers approximately 10 square metres.
- 10 m² per litre for less porous surfaces like painted walls, sealed decks, or light dirt buildup.
Other surface types and uses.
- 5 m² per litre for very porous surfaces like unsealed concrete/driveways, old timber, or heavy dirt buildup.
Coverage for 1L of House Wash Concentrate
Based on these application rates, here are the estimated coverage areas for 1 litre of concentrate:
1. At the 1:40 Dilution Ratio
This ratio is for general house cleaning, suitable for dirt, grime, traffic film and maintenance.
- Total Ready-to-Use Solution: 1L concentrate + 40L water = 41 litres of solution.
- Typical Coverage Area: Using the 10m² per litre rate for light dirt on non-porous surfaces, the total coverage would be:
This is generally enough to cover an average 3-bedroom house.
- Typical Coverage Area: Using the 10m² per litre rate for light dirt on non-porous surfaces, the total coverage would be:
In summary, 1L of House Wash concentrate can cover approximately 400 m², depending on how it’s diluted and the condition of the surface.
🛡️ Professional Upgrade: The “Chemical Wash”
For professional-grade fast results on surfaces with heavy organic growth, our Exterior House Wash Cleaner can be mixed with ChemShop XY Plus (15% Sodium Hypochlorite).
While our Exterior House Wash Cleaner is an exceptional detergent for lifting dirt, grease, traffic film and light mould & aglae, adding XY Plus creates a potent biocidal solution that kills deeper mould, algae, and lichen infestations at a cellular level, preventing regrowth for much longer than a standard wash.
Why use the XY Plus + House Wash Duo?
- Industrial Strength: XY Plus (15%) is 3x stronger than retail bleach, requiring less product per wash.
- The “Stick & Dwell” Factor: Our Exterior House Wash Cleaner acts as a high-performance surfactant, making the mix “cling” to vertical walls and gutters so the chlorine can work effectively.
- Corrosion Protection: Our formula contains built-in inhibitors to help protect metal fixtures and joinery from the oxidizing effects of concentrated sodium hypochlorite.
Mixing Guide – 10L Ready-to-Use Batch
This is a general guide only – it is up to you to determine appropriate/safe dilution rates for your situation.
| Strength | XY Plus (15%) | Water | House Wash | Best For: |
|---|---|---|---|---|
| Standard (1%) | 650ml | 9.25L | 100ml | General siding & painted walls |
| Medium (2%) | 1.3 Litres | 8.60L | 100ml | Heavy algae & gutters |
| Strong (3%) | 2.0 Litres | 7.85L | 150ml | Concrete, brick & heavy lichen |
Application Steps
- Saturate Foliage: Soak all nearby plants and grass with fresh water before and after application to help protect them.
- Apply Bottom-to-Top: Spray the mix from the bottom up to prevent permanent “run streaks.”
- Dwell Time: Allow 10–15 minutes of dwell time. Do not let the solution dry on the surface.
- Rinse Top-to-Bottom: Rinse thoroughly with fresh water, paying close attention to window joinery.
⚠️ Important: Safety & Compatibility Warning
Adding XY Plus (15% Sodium Hypochlorite) to your wash provides exceptional biocidal power, but requires strict safety protocols:
- Surface Risks: High concentrations can “chalk” dark paint or fade powder-coated joinery. Avoid use on natural Cedar as it can damage wood fibers.
- Metal Corrosion: This mix is highly oxidative. It must be rinsed thoroughly from all metal flashings, gutters, and window hardware.
- Plant Protection: You must heavily saturate surrounding plants with fresh water before and after application to help minimise any foliage damage.
- Chemical Safety: Wear full PPE (eye protection, gloves, and mask). NEVER mix with acid-based cleaners, as this creates toxic chlorine gas.
💡 Unsure? We suggest our safer 2-Step Process: If you are concerned about surface compatibility, plants or application safety, skip the XY Plus. Instead, clean the dirt away with Exterior House Wash Cleaner and follow up with an application of Moss & Mould Killer. This provides a professional, deep-penetrating clean with 12 months of protection and significantly lower risk to your property.
Buy in Bulk Online & SAVE :
Our Exterior House Wash Cleaner for homes in NZ s available here at CHEMSHOP. As a leading New Zealand house cleaner provider, we deliver throughout the country. Order online and get your Exterior House Wash Cleaner and other chemical products delivered to your door!
Experience the power of House Wash, the eco-friendly solution for exterior cleaning. Say goodbye to stains, protect your plants, and embrace environmental responsibility. Get House Wash today!
Why Buy From CHEMSHOP?
Choosing CHEMSHOP for your cleaning needs comes with a number of benefits:
- Wide Range of Products: We offer a comprehensive selection of cleaning products for both domestic and industrial applications, including eco-friendly and MPI-approved options.
- Guaranteed Quality, Concentrated Cleaning Chemicals: We carefully select only the highest-quality, concentrated cleaning chemicals to offer to our customers. We are committed to ensuring that every product we offer meets the highest standards of quality and effectiveness.
- Competitive Pricing: Our products are priced competitively, offering good value considering their high concentration and effectiveness. Pricing is available for 5L and 20L containers, with custom quotes for larger 200L & 1,000L IBC volumes.
- Eco-Friendly Focus: We prioritise environmentally friendly solutions, ensuring that our products are safe for both users and the environment.
- Local Business Support: By purchasing from CHEMSHOP, you support a New Zealand-owned company and manufacturer that has been serving the community for years.
- Expert Support for Your Cleaning Needs: With ChemAssist, we’re always available to answer any questions you may have and help you find the right cleaning chemical for your specific needs. Otherwise we’re only a call or email away.
- Safe and Secure Online Shopping: We use the latest security measures to protect your personal information and ensure that your shopping experience is safe and secure.
- Free Shipping* for Auckland Customers: Qualify for free shipping on all orders over *$198 when your delivery destination is Auckland.
- Customer Support: We provide excellent customer service, including product information, safety data sheets, and assistance with orders and bulk inquiries.
Introducing ChemAssist, your 24/7 virtual assistant for CHEMSHOP, providing expert guidance and convenient access to a wide range of cleaning products. It offers personalised recommendations, links to relevant product pages, and support with orders and inquiries, ensuring a seamless and efficient shopping experience.
>> Just click on the ChemAssist icon (bottom right) of any page.
If you require more information, you can contact us through our Contact Us page.
4.57/554 reviews for Exterior House Wash Cleaner ConcentrateAdd a review
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Standard Shipping
- Buy 20 Litre Pails & Save Even More
- Fast Order Processing & Shipping
- Nationwide Delivery Network
Estimated delivery by Thu, 19 Mar - Mon, 23 Mar
Layla (verified owner) –
This house wash went a long way and worked well. I’m impressed, will buy more.
Mike (verified owner) –
Surprised at how well it worked, should have done this sooner.
Anton (verified owner) –
Switching to Chemshop has saved me money due to their highly concentrated products.
Bodhi (verified owner) –
Chemshop’s house wash is concentrated, making it a cost-effective choice.
Corbin (verified owner) –
Fantastic service.
Heath (verified owner) –
Impressive cleaning results! It removed pretty much all the grime and stains from my house walls.
Jayden (verified owner) –
Chem Shop’s delivery service is good, my order to West Auckland arrived on time & it did a good job of cleaning my house. Thanks.
Kash (verified owner) –
Lightning-fast delivery, very satisfied
Charles J (verified owner) –
Impressed by fast email replies. Pro advice and sound recommendations made my purchase a breeze.
Moses (verified owner) –
Exceptional order processing efficiency
Calvin (verified owner) –
Works wonders
Devin (verified owner) –
Highly effective & highly recommended.
Karson (verified owner) –
I’m a loyal repeat customer
Kyrie (verified owner) –
Exceptional email support
Brady (verified owner) –
Reliable and efficient cleaning
Theodore (verified owner) –
Reliable brand
Cedric (verified owner) –
Outstanding results
Kieran (verified owner) –
Quick email solutions
Rylan (verified owner) –
A must-have for clean living
Caden (verified owner) –
Cleaned to perfection
Abigail Thomson (verified owner) –
Easy order. fast delivery & the product exceeded expectations. Just a minor shipping hiccup prevented a perfect score.
Luke Green (verified owner) –
Ordering was smooth & customer service was responsive. The house wash arrived quicker than expected. Almost 5 stars!
A McDonald (verified owner) –
Effortless order. exceptional service & fast delivery. House wash works wonders.
Qunn W (verified owner) –
House wash is a winner. The order process was user friendly & shipping was quite fast though not flawless.
Harvey Baker (verified owner) –
House Wash is great & the order was straightforward. Quick shipping, though there was a small delay.
Oscar Pike (verified owner) –
This house wash chemical made my building washing project a wak in the park. I couldn’t be happier with the results
Noah McKean (verified owner) –
If you’re in search of the best house wash solution your quest must end here. This exterior house cleaning solution is so good.
Oscar Reid (verified owner) –
South Island buyer here. Quick & easy order, House Wash is top-notch!
Will Knight (verified owner) –
I’m delighted with this cleaner for the exterior of my house. The exterior cleaning house solution worked like a charm.
hudson page (verified owner) –
This house washing exterior solution is good. My outdoor house cleaning has never been this effective.
Alan L (verified owner) –
This exterior home cleaning product made my house shine. The outside house cleaning process was so essy & my home looks immaculate. Saved a lot by doing it myself.
Sam Jackson (verified owner) –
I used to strugggle with exterior cleaning but this house wash solution is hands down the best exterior house washing solution out there
Khan Mohammad (verified owner) –
Cleaning outside the house used to be a hassle but not anymore. Thanks to this excellent cleaner for the exterior of the house my home looks pristine.
Joel (verified owner) –
Outstanding email service
Mike Herbert (verified owner) –
Finally a solution that simplifies wash outside of the house tasks. This chemical wash house product exceeded my expctations. Better DIY then hiring professionals who charge an arm & leg.
Wiremu Ahurewa (verified owner) –
I was looking for the perfect outdoor house cleaning solution and I found it. This product is a must try for anyone who wants their house to sparkle.
Santino (verified owner) –
Outstanding email support team
Jasmine McKay (verified owner) –
House wash is fantastic & the order process was a breeze. Shipping to the South Island was relatively quick. Just a small hiccup by the courier.
Ruben (verified owner) –
A+ for cleaning quality.
Amelia M (verified owner) –
I used exterior housewash to clean my driveway & it did a fantastic job. It’s easy to use & does what it says.
M Joseph (verified owner) –
House Wash is a game-changer! I used it on my deck which was looking weathered & grimy. It’s a fantastic product that delivers on its promises.
Lachlan M (verified owner) –
I was skeptical about House Wash claims but it exceeded my expectations. My house claddin was covered in dirt & grime & this stuff cleaned it effortlessly. Five stars without a doubt
Rawiri L (verified owner) –
I recently used House Wash to clean the siding of my house & I am absolutely thrilled with the results. Five stars!
Jairo (verified owner) –
The order process was seamless
Colton (verified owner) –
Efficient email correspondence
B Turner (verified owner) –
Always helpful & well stocked
Grace Hall (verified owner) –
Power washed my house with this product worked great had no problems
Hannah Cook (verified owner) –
Great product, great service. Only reason it’s not 5 stars is the shipping took a tad longer than I’d hoped for.
Miles Wood (verified owner) –
Impressed with the easy ordering process. Customer support promptly answered my questions. Shipping was speedy, but there was a slight delay in receiving my order in Gore.
Brad Armstrong (verified owner) –
I was dreading the house wash but with this exterior house cleaning solution it was a breeze. The exterior home cleaning results were fantastic. Arrived in Hamilton in 2 days.
Brad Armstrong (verified owner) –
For anyone in need of a reliable exterior house wash chemical this is the one to go for. It made the house washing process incredibly efficient
John (verified owner) –
Impressed customer
Arthur M (verified owner) –
I recently used this house wash chemical and it worked wonders on my house exterior. The house washing instructions on the label were clear and my house looks brand new
chris mcmillan (verified owner) –
Not happy with the delivery speed took 5 days to arrive in Cape Reinga.