Frequently asked questions

Questions about services we offer


What is a high pressure wash

a high pressure wash This is where we crank things up a notch to remove stubborn moss and mould or to remove loose paint for pre-paint preparation. This method is also great for cleaning driveways, slippery steps,removing oil stains from concrete, cleaning gutters and spouting and removal of unwanted plant growth from the gaps in paving and patio areas. We have a range of nozzles that provide a gentler clean when needed for use on softer materials like a wood fence.


What is a chemical wash

We use a chemical wash when a little bit of oomphis needed to remove heavier build ups of grime, allege and mould. The processis similar to a soft wash only a stronger chemical is used.


What is a soft wash?

Soft washing is the gentlest method for removing mould and grime using bio degradable MAF approved detergent.  The detergent leaves a wax coating to repel mould growth and leave a sparkly shine.The wash is carried out using a nozzle on the water blaster gun that ensures a low pressure application of water in conjunction with turning down the power on the water blaster. When required we also use a water broom to loosen grime. This service is perfect for routine cleaning every 4 to 12 months.


Do you apply bug treatments?

Yes we do treat for spiders, flies and other bugs.


Can you water blast shade sales?

Yes we clean shade sails andcanopies. Most shade sails come up looking really nice and clean however thereare some fabrics that seem to trap the dirt and grime and these will not alwayscome up clean.


Can you water blast outdoor furniture?

Yes we can water blast most outdoor furniture. We have a variety of different nozzles we can use, and we can also adjust the pressure to ensure a soft gentle wash.


Do you wash windows?

We wash commercial windows however we do not wash residential windows. We have a residential window washer that we often use and can recommend to you.  

What does it cost?


Do I get charged for travel?

It depends where the property is located. We charge 40cents per km from the outskirts of Whangarei as defined by google maps. If the property is in Auckland please make contact so we can discuss if there will be a charge or not.


What is the cost of a roof wash?

The cost of a roof wash is dependent on how many square meters the roof is, how steep the pitch is, how accessible it is and how dirty it is. An alternative option is for to treat the roof instead which it's much quicker for us to do and therefore often a cheaper option.

If you are on tank water we will disconnect the tanks so that none of the dirt or cleaning product we use gets into the tank. You will need to leave your tanks disconnected until you have had 25 mm of rain.

If you have skylights we can also wash these while we're washing the roof. We have specialised brushes to gently wash skylights.

If you can let us know how big the roof is, where the property is located, and what the roof is made out of we will be able to give you a price.


What is the cost of a house wash?

There are a lot of factors that determine the cost of a house wash for example the size of the house to be washed, whether it's split level, single level or multi-level, how accessible the house is. Another factor that we take into consideration is how dirty the house is, and what sort of mould is on the House. For example, pink mold can take a lot longer to clean off than other moulds.

Also taken into consideration is if the job includes water blasting concrete around the house, washing a garage, decks,patios and porch roofs. We price these things separately So make sure you let us know if you want any of these items priced and washed.  

Low water pressure will also affect the price as this can mean the job takes a lot longer to complete. If we quote a job and then find that the water pressure is not very good we will need to adjust the price. When this happens, we always contact the person who engaged us to complete the job to let them know the change in price and to check they would still like us to proceed.

Fill out our online form to request a quote

Roofs, gutters and drain unblocking


What is a roof treatment?

A roof treatment uses a product to clean the roof as opposed to a water blaster. The product gets sprayed onto the roof surface and is designed to kill lichen and moss. The rain and sun gradually break down and remove the dead lichen and moss. This process can take up to 12 months and generally results can be seen in the first month.

The alternative to a roof treatment is a roof wash. In some cases, this can be done from the ground. Alternatively,we get up on the roof using our harnesses and safety gear and gently wash the roof using low pressure. If you have a tile rood we generally recommend a roof treatment.


I have a broken gutter would your guys be able to fix it while they are washing my house?

Yes in most cases yes we can fix your broken gutter.


What is involved in unblocking gutters and what happens with the gunk you clear from the gutter?

When we unblock gutters we clear out all of the debris and take it away from your property. If you are on tank water we will disconnect the tanks and will complete a freshwater flush of the gutters after we have cleaned them out.

General questions


How often should I have my house or commercial building washed?

It is a good idea to wash your house or commercial building at least once a year to extend the life of your paint 20 to 25% longer. Many clients opt to have their properties washed 2 or 3 times a year to keep them looking good and to eliminate spider webs.

If however you live in a coastal area you should look to have your property washed at least 2 times a year or more depending on how close you are to the sea. This assists with any coastal breeze erosion.

It is also important to note if any of the materials used to construct your house or building have a warranty. If so, these materials must be washed according to the warranty specifications so that the warranty does not become in valid


I heard that washing a house or building on a regular basis makes the paint last longer. Is this true?

Yes washing once or more a year will increase the life expectancy by 20 to 25%. Paint manufacturers have carried out many studies to back this up. And it is much cheaper to get a regular wash than repaint more often you need to.


We want to repaint our house. Can you strip away the paint using water blasting?

Water blasting to strip paint is not something we recommend. However, we do recommend and offer a pre paint wash which will loosen and remove any paint flakes making it easier for the pre paint preparation. A lot of residential and commercial house painters will use our services prior to them starting the job.


Does water blasting a house or building remove moss, mould & lichen?

Water blasting alone will not kill and remove Moss mould and lichen. We apply a solution that is 50% stronger than most over-the-counter products and will keep the surfaces free of moss, mould and lichen for longer.


What should I do to prepare for my home to be washed?

Make sure there is no washing hanging on the line, if you have pots and plants or furniture that is likely to get in the way please move it out of the way. If you have a dog, please ensure the dog is contained.

If you are in an older house with wooden joinery it is a good idea to put towels down on the inside of the windowsills.Please also ensure that all windows and doors are shut.  


I am an absentee owner so how will I know you have done a good job?

We have many absentee owners and are more than happy to take before and after photos at your request. We are also more than happy to do a pre and post wash report on any damage we notice for example broken gutters or down pipes, rusting roof. This can be particularly useful in areas which cannot be seen easily from the ground and if an issue is caught early enough it can save thousands in damage.


Do I have to be home when you wash my house or property?

No you do not have to be home when we wash your house or property. Just remember to close all your windows and move anything away from the house that you do not want to get wet.


Will you provide a discount if I have more than one property to wash?

Yes we will definitely provide a discount if you have more than one property you want washed.


What is included in a house wash?

When we quote to wash a house, the wash includes exterior walls which are washed from ground level to gutter including joinery, entrance alcoves, eaves, exterior gutters, spouting and downpipes.

The following is not included in a house or building wash: If you would like other items washed such as the roof, decks, driveway, paths, patios, garage or other detached buildings we price these separately.

Clearing out gutters also gets priced separately.


Do you wash cow sheds or farm implements?

We sure do. Pete was a dairy farmer for over 20 years and so Loves an excuse to get back on the farm


Can you freshwater flush my windows after you have washed my house or building?

Yes we can flush windows after we have washed a house or building and in most cases we will do this as part of a house wash.

Will it cause damage?


Will water blasting my property make paint chip off?

The paint will only chip off if the surface that is being washed has a good paint finish. This is because we never use a high pressure wash on painted or natural wood surfaces. The nozzles we use are different to that of a domestic water blaster and enable us to do a much gentler wash. We also apply a cleaning product to the surface prior to doing a soft wash which loosens any dirt, grime and mould.


Will water blasting damage my wooden surfaces such as deck or wooden cladding?

Yes, it can Cause damage to property if the operator has not had enough training in the correct washing techniques and using the machinery and tools correctly. Using commercial grade purpose-built equipment combined with the correct low pressure is important to ensure there is no damage. We also have a variety of nozzles that we use and change for different surfaces. All our guys are thoroughly trained in the correct washing techniques and how to operate the gear.


Are the cleaning products you use harmful to plants, pets, people or my pool?

To answer this question, we will look at each of the individual items separately.

Plants - The cleaning product used can damage plants if the operator does not apply it in the correct manner. If you are concerned about your plants let us know. We can wet any plants close to the area that is being washed with water to dilute the solution to avoid any damage. We can also then gently rinse the plants afterwards and we can use a diluted mix of our wash down product.

Pets & people - Once again the answer to this is yes if the operator does not know what they're doing. It is important that the cleaning product is mixed at the correct ratio with water to ensure a safe dilution. All the Blast Away Guys team is thoroughly trained on how to do this.

Pool - No the product we use will not damage your pool. If we're cleaning around the outside of an in ground pool every effort will be made to stop debris from being washed into the pool.

Commercial, schools and educational centres


How much insurance do you have?

We have 10,000,000 Public liability insurance


Do you wash commercial windows?

Yes we provide window washing for commercial buildings.


Will you offer a discount if I also get the neighboring businesses on board to get theirs washed as well?

Yes definitely.


How does hot water blasting work?

Hot water blasting raises the temperature of the water to as much as 90c to cut through and remove chewing gum, grease, oils, cooking fats and other oily products by breaking them down.The results are much more impressive than cold water blasting.


Do you wash grease and grime from industrial plants and machinery?

Yes we do wash grease from Industrial plants and machinery. We have a hot water blaster which is amazing removing grease and grime.


Can you clean oil stains or oil spills?

Yes we do can clean oil stains,spills and grease. We use our hot water blaster and degreaser which is effective for oil stains and spills.  For oil spills we will often need to get a sucker truck to eliminate oil going down the drain and into the sea.


Do you wash chewing gum of pavements?

Yes, we do remove chewing gum form pavements. We have a special hot water blasting machine which makes an impressive difference and saves time and money. It offers some distinct advantages when you have a job where you really need some grunt.


Can you wash just the exterior front of my business?

Yes definitely. We will often wash just the front and signage three or four times a year and then complete a full wash of a building once a year.  


What is your health and safety process when you are washing commercial buildings?

Blast Away Guys is very committed to the Health and Safety of our team,clients and anyone else working on the sites that we are washing. Before we begin any site work we perform hazard identification, Worksafe NZnotifications, site specific emergency planning and other relevant planning and documentation.  We have in place regular safety meetings, audits and reporting. All our team also attend on-going training programmes.

SiteWise performed an independent assessment of Blast Away Guys and as a result  awarded us a green certification status for our health and safety procedures and systems. This means that have we demonstrated to SiteWise that we have quality health and safety systems in place.


Do you provide a post wash report?

Yes we can definitely provide a post wash report this would include comments on the overall condition including pre wash state and problem areas such as heavy lichen and rust. We also report on the overall condition of the building and materials. This can be particularly useful in areas which cannot be seen easily from the ground. In many cases this has saved building owners thousands because issues are spotted before they cause expensive damage.

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