Moss, mould and road grime build up fast on Marlborough homes, and the best pressure washing in Blenheim covers everything from gentle low-pressure house washes through to driveway blasting, roof treatments and full commercial winery cleans. The operators below work across Blenheim, Picton and the wider Marlborough district on residential and commercial property alike, with local specialists such as Marlborough WaterBlasting 2020 Ltd and Wash Rite Blenheim leading the way.
1Marlborough WaterBlasting 2020 Ltd
Marlborough WaterBlasting 2020 Ltd is a Blenheim based cleaning company run by Ben and Grace, working across both domestic and commercial property in the Marlborough district. They handle high and low pressure work, from pre-paint house washes and chemical cleans through to roof and gutter clearing, and they specialise in commercial winery cleaning. The mix suits homeowners wanting an exterior refresh as well as vineyard and commercial property managers needing a contractor who understands winery sites.
Services
- High and low pressure house washing
- Pre-paint washing and general exterior building cleans
- Roof and gutter cleaning
- Algae, moss and lichen treatments
Highlights
- Specialises in commercial winery cleaning, a service most exterior cleaners do not offer
- Free consultation and no-obligation quotes on all cleaning enquiries
- Qualified team takes on the at-height roof and gutter work so owners stay off ladders
Location & Contact
Name: Marlborough WaterBlasting 2020 Ltd
Address: Blenheim
Phone: 027 753 6981
Website: marlboroughwaterblasting.com
2Wash Rite Blenheim
Wash Rite Blenheim is run by Kerry and Brad from a base in Blenheim, covering Marlborough and reaching across into the Tasman District. As part of the national Wash Rite group they follow set procedures and safety practices on every job, and they clean both residential and commercial buildings including decks, fences and driveways. It is a good fit for owners who want one contractor to handle a full exterior tidy-up rather than booking separate trades.
Services
- Low-pressure house washing and soft washing
- Moss and mould roof cleaning
- Gutter and spouting cleaning
- Driveway and hard surface cleaning
- Commercial, rural and farm building washing
Highlights
- Local Blenheim office with a street address in Mayfield, not a national call centre
- Part of a national brand servicing more than 14 South Island locations
- Exterior pest and spider spraying can be booked alongside a wash
- Solar panel cleaning offered as part of the exterior range
Location & Contact
Name: Wash Rite Blenheim
Address: 20 Nelson Street, Mayfield, Blenheim 7201
Phone: 022 132 6947
Website: washrite.co.nz/franchise/blenheim
3Chemwash Top of the South
Chemwash Top of the South is the regional Chemwash franchise, based in Nelson and servicing Blenheim, the Marlborough Sounds, Golden Bay and across to the West Coast. Their work is built around a low-pressure cleaning system that lifts mould, grime and organic buildup off cladding, roofing, paving and timber without the surface damage heavier blasting can cause. The low-pressure approach makes them a sensible option for older cladding, painted surfaces and delicate garden features.
Services
- Low-pressure house washing
- Roof cleaning and long-acting roof treatments
- Gutter cleaning, including for tank water systems
- Path, driveway and paving cleaning
- Deck, yard and garden feature cleaning
Highlights
- Chemwash has been Kiwi owned and operated since 1981
- Double-filtered pure water system used for exterior window cleaning
- Assesses roof condition first and recommends either a same-day clean or a slower-acting treatment
Location & Contact
Name: Chemwash Top of the South
Address: Nelson, servicing Blenheim and Marlborough
Phone: 027 446 0282
Website: topofthesouth.chemwash.co.nz
4Having a Blast
Having a Blast is Josh’s house washing and water blasting operation, based in the Marlborough Sounds and covering Blenheim, Picton, Havelock and the bays. It is one of the few exterior cleaners in the region to publish a full price list online, with fixed starting rates for house washes, gutter clearing and roof treatments. That transparency suits bach owners and homeowners who want to know the likely cost before making contact.
Services
- Single and double storey house washing
- Water blasting of driveways and hard surfaces, charged by the square metre
- Roof treatments
- Gutter clearing
Highlights
- Published online price list, with house washes starting from $200 for a small single level home
- Combined package covering house wash, roof treatment and gutters for $450
- Commercial work covers farm buildings, milking sheds, warehouses, car parks and schools
- States up front that cedar and stained timber cladding are excluded, so there are no surprises on the day
Location & Contact
Name: Having a Blast
Address: Marlborough Sounds, servicing Blenheim and Picton
Phone: 020 4077 9916
Website: havingablast.co.nz
How to Choose the Right Pressure Washing in Blenheim
- Match the pressure to the surface. Painted weatherboard, older cladding and decking usually need a low-pressure soft wash, while concrete driveways and paving can take a genuine high-pressure blast.
- Ask whether a roof job is a wash or a treatment. A same-day clean gives an instant result, whereas a chemical treatment works over following months and is gentler on fragile roofing.
- Check the cladding exclusions before booking. Cedar, stained timber and some soft stone need specialist handling and several operators will not touch them.
- Confirm who goes up on the roof and how. Working at height is the highest risk part of the job and should be quoted with the right access gear, not improvised off a ladder.
- Get the quote in writing with the scope spelled out, covering whether gutters, windows, paths and fences are included or priced separately.
Frequently Asked Questions About Blenheim Pressure Washing
How much does a house wash cost in Blenheim?
Published rates in the Marlborough region start around $200 for a small single level house wash and rise for larger or two storey homes. Gutter clearing and roof treatments are usually priced separately, and packages that bundle all three are common. Most operators here quote free of charge after looking at the property.
What is the difference between soft washing and water blasting?
Soft washing applies a cleaning solution at low pressure and lets the chemistry break down mould and grime, which protects paintwork and older cladding. Water blasting relies on high pressure water to strip dirt off hard surfaces such as concrete and pavers. Most Blenheim jobs use a combination, with soft washing on the house and blasting on the driveway.
How often should a Marlborough home be washed?
Once a year suits most properties, though homes shaded by trees, close to the coast, or in damp Sounds locations often need more frequent attention. Regular washing slows the buildup of lichen and mould, which is what damages paint and roofing over time.
Will pressure washing damage my paint or cladding?
It can, if the pressure is wrong for the surface. Painted weatherboard, plaster systems and older cladding should be soft washed rather than blasted. A reputable operator will inspect the cladding first and tell you which method they intend to use, and will decline surfaces such as cedar or stained timber that need different treatment.
Do I need a pre-paint wash before repainting?
Yes. Paint will not bond properly to algae, mould or surface grime, so a pre-paint wash is standard preparation and most exterior cleaners in Blenheim offer it as a specific service. Painters will often ask for it to be done before they start.
Is roof cleaning safe to do myself?
Falls from height are one of the most common causes of serious injury in New Zealand property work, which is why roof cleaning is best left to a contractor with proper access equipment and fall protection. WorkSafe New Zealand publishes guidance on working at height that explains the risks and the controls expected on a job site.
Are there rules about wash water running into the stormwater drain?
Detergents and contaminated wash water should not simply run into the stormwater network, which discharges to waterways rather than to treatment. Professional operators plan for containment and disposal as part of the job. The Marlborough District Council sets the local stormwater and trade waste rules that apply.
Can pressure washing companies clean commercial and rural buildings?
Yes. Several Marlborough operators work on wineries, farm sheds, milking sheds, warehouses, car parks and schools as well as houses. Commercial work is normally quoted on site because access, height and the surface type vary far more than they do on a residential job.