Choosing the best house washing in Blenheim comes down to finding a crew that can lift years of mould, lichen and road grime off your cladding without driving water in behind it. The operators below cover low pressure house washing, soft washing, roof moss and mould treatment, gutter clearing and driveway cleaning across Blenheim and the wider Marlborough region. Wash Rite Blenheim and Marlborough WaterBlasting 2020 Ltd both work out of Blenheim itself, while Chemwash Top of the South and Having a Blast travel in from Nelson and the Marlborough Sounds.
1Wash Rite Blenheim
Wash Rite Blenheim is run by Kerry and Brad from a base at 20 Nelson Street in Mayfield, covering Marlborough and the Tasman District. Low pressure house washing and soft washing are the branch’s core residential work, sitting alongside roof, gutter and hard surface cleaning for both homes and commercial buildings. It suits homeowners who would rather have the cladding, roof, gutters, deck and driveway handled by one team than book several trades.
Services
- Low pressure house washing and soft washing
- Moss and mould roof cleaning
- Gutter and spouting cleaning
- Driveway and hard surface cleaning
- Deck and fence cleaning
Highlights
- Published Blenheim street address at 20 Nelson Street, Mayfield, rather than a city name alone
- Part of the national Wash Rite network, which services over 14 locations across the South Island
- Displays AA Home and Exterior Cleaning Industry Association accreditation across the network
- Exterior pest and spider spraying offered alongside the exterior cleaning work
- Solar panel cleaning and pre-paint washing available for homes preparing for repaint or solar upkeep
Location & Contact
Name: Wash Rite Blenheim
Address: 20 Nelson Street, Mayfield, Blenheim 7201
Phone: 022 132 6947
Website: washrite.co.nz/franchise/blenheim
2Marlborough WaterBlasting 2020 Ltd
Marlborough WaterBlasting 2020 Ltd is a Blenheim based cleaning company run by Ben and Grace, working throughout the Marlborough region. Its domestic work covers house washes at both high and low pressure, along with roof and gutter cleaning and moss and lichen treatment. The same crew handles winery and commercial property cleaning, so lifestyle blocks and rural sheds are as much a part of the job list as suburban homes.
Services
- Domestic high pressure and low pressure house washes
- Roof and gutter cleaning
- Moss and lichen treatment
- Winery and commercial property cleaning
Highlights
- Blenheim based and independently owned, working across the Marlborough region
- Winery cleaning experience, a line of work specific to Marlborough
- Free consultation and no obligation quotes on cleaning enquiries
- Two named owner contacts, Ben and Grace, published for enquiries
Location & Contact
Name: Marlborough WaterBlasting 2020 Ltd
Address: Blenheim
Phone: 027 753 6981
Website: marlboroughwaterblasting.com
3Chemwash Top of the South
Chemwash Top of the South is the Nelson based Chemwash franchise, servicing Blenheim, the Marlborough Sounds, Golden Bay, St Arnaud and across onto the West Coast. Its low pressure system uses environmentally responsible detergents to break down mould, mildew, dirt and surface pollutants before rinsing the house at minimal pressure. That approach suits owners of painted or more delicate exteriors where high pressure water would be a risk.
Services
- Low pressure house washing and soft washing
- Roof cleaning and roof treatment
- Gutter cleaning
- Path, driveway and wood decking cleaning
- Exterior window cleaning using a double filtered pure water system
Highlights
- Chemwash has been 100% New Zealand owned and operated since 1981
- Covers Nelson, Blenheim, Marlborough Sounds, Golden Bay, St Arnaud and the West Coast
- Offers a choice between a same day roof clean and a slower roof treatment, assessed on the roof’s condition and construction
- Pure water window system means only filtered water runs onto plants below the windows
- Workmanship and customer satisfaction guarantee stated on its own site
Location & Contact
Name: Chemwash Top of the South
Address: Nelson
Phone: 027 446 0282
Website: topofthesouth.chemwash.co.nz
4Having a Blast
Having a Blast is run by Josh out of the Marlborough Sounds and covers Blenheim, Picton, Havelock, Nelson and the Sounds bays. It publishes a flat online price list for house washing, gutter clearing, roof treatments and water blasting, so a homeowner can see the likely cost before making contact. Because the base sits outside mobile coverage, enquiries run through email or a wifi calling number.
Services
- House washing for single and double level homes
- Roof treatments
- Gutter clearing
- Water blasting for driveways and other hard surfaces
- Commercial cleaning for farm buildings, milking sheds, warehouses, car parks and schools
Highlights
- Flat online price list published, including a $450 package covering a house wash, roof treatment and gutters
- Covers the Marlborough Sounds bays, including Kenepuru Sound, Queen Charlotte Sound, Pelorus Sound and Ākiwi Bay
- States upfront that cedar and stained timber cladding sit outside the standard price list
Location & Contact
Name: Having a Blast
Address: Marlborough Sounds
Phone: 020 4077 9916
Website: havingablast.co.nz
How to Choose the Right House Washing in Blenheim
- Check whether the quote is for low pressure soft washing or high pressure blasting, and which one suits your cladding. Painted weatherboard, cedar and older plaster all need gentler handling than concrete or brick.
- Ask whether roof work is a same day clean or a treatment that keeps working over the following months, because the two look very different on the day the crew leaves.
- Confirm public liability cover and a written health and safety process, particularly for two storey homes, steep sites and any work carried out on the roof itself.
- Find out what is excluded before you book. Cedar, stained timber, fragile roofing and restricted access are common exclusions from a standard exterior wash.
- Match the service area to your address. Blenheim, Renwick, Picton and the Sounds bays are not all covered by the same operators, and travel time can change the price.
Frequently Asked Questions About Blenheim House Washing
How much does a house wash cost in Blenheim?
Pricing depends on the size of the home, how many levels it has, the cladding type and how much growth has built up. As a published local example, Having a Blast lists a small single level house wash from $200, a standard single level from $240 and a double level from $280, with gutter clearing and roof treatment priced separately. Most other operators quote per job after seeing the property, and free no obligation quotes are standard across the trade.
What is the difference between soft washing and water blasting?
Soft washing applies a cleaning solution at low pressure and lets the chemistry do the work on mould, lichen and algae, then rinses gently. Water blasting relies on high pressure water to strip grime off hard surfaces. Cladding, painted surfaces and roofs are usually soft washed to avoid forcing water into joints or stripping paint, while concrete driveways, paths and retaining walls are better suited to blasting.
How often should a Marlborough home be washed?
Once a year is the common recommendation for most homes, and many owners tie it to the same time each year so it is not forgotten. Houses in shaded or damp positions, under trees, or close to the Sounds and the coast tend to grow mould and lichen faster and may need it more often. If you can see green or black staining from the footpath, it is already overdue.
Will house washing damage my paint or my garden?
A properly applied low pressure wash should not lift sound paint, which is why most operators use soft washing on cladding rather than high pressure. Damage risk rises with high pressure on old or failing paintwork, weathered timber and cracked plaster. Reputable crews wet down and rinse garden beds around the house, and some will move pot plants before starting. Tell the operator about any sensitive planting when you book.
Do Blenheim house washing companies clean roofs too?
Yes. All the operators listed here handle roof work as well as walls, either as an immediate roof clean or as a moss and lichen treatment that breaks growth down over the following months. Gutter clearing is usually offered at the same time, since the crew is already set up at height and washing debris off the roof will end up in the spouting.
Is it worth washing the house before painting?
A pre-paint wash is a standard step rather than an optional extra. Algae, black mould, dust and chalked paint all interfere with how new paint bonds to the surface, so painting over them shortens the life of the job. Several operators here offer pre-paint washing as a named service and will coordinate the timing with your painter.
Can I just wash the house myself?
A domestic water blaster will handle a low single storey wall or a driveway, but the risks sit in the parts people underestimate. Working from a ladder or on a roof is one of the most common causes of serious injury in New Zealand, and WorkSafe New Zealand publishes guidance on working at height that is worth reading before you climb. High pressure water aimed at cladding joints, window seals or soffits can also force water into the building.
Are there water restrictions that affect house washing in Blenheim?
Marlborough does get water restrictions in dry summers, and those can limit outdoor hose use, which affects when exterior cleaning can be booked. Check the current status with the Marlborough District Council before scheduling, or ask the operator, as most track restrictions closely and will tell you if a job needs to wait.