House washing soap / for use with water blaster

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#2696252 21-Apr-2021 20:35

neb: If you're spraying BZK horizontally rather than straight onto the ground, where it can blow around in the wind, use breathing protection. That stuff can be nasty when inhaled.

Right so full safety gear - safety glasses, I have a lead paint mask, plus my wet weather gear. Ta :)

andrew75

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#2696315 21-Apr-2021 22:10

Yes esp eye protection i ended up in the A&M after i got some in my eyes when using it through the waterblaster. Vision went all cloudy, quite scary. I use goggles now just to make sure...

timmmay

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#2696394 22-Apr-2021 05:52

andrew75:

Yes esp eye protection i ended up in the A&M after i got some in my eyes when using it through the waterblaster. Vision went all cloudy, quite scary. I use goggles now just to make sure...

That's not good, any permanent damage? Maybe I'll wear my swim goggles which completely seal the eye, rather than the safety glasses which still have a bit of ventilation around the side. Except the goggles fog up...

tdgeek

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#2696395 22-Apr-2021 06:39

neb: Problem with waterblasting is that it has the potential to dislodge existing paint, sealants, and other stuff, creating a problem for you in the future.

True, but you don't use it as a water blaster, turn it down so its a convenient higher pressure hose with a lance.

Dulouz

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#2696398 22-Apr-2021 07:45

I followed these instructions from https://nztreatmentsandspraying.co.nz/the-5-best-auckland-house-washing-tips/

Instructions
For a medium sized house, mix 5 litres of household bleach with 4 litres of water and 1 litre of dish wash liquid.
Leave the solution on the house for 5 to 10 minutes and then wash off completely.
Marvel at your pristine clean house, and tell your friends how great it looks.
This solution will provide a deep clean to a level that water blasting and scrubbing can’t achieve.
You’ll be left with a shinier house, that will stay clean for longer. The household bleach is relatively non-toxic, safe to wash around established plant life and water-soluble. It easily washes away, and residue will biodegrade with a little bit of sunlight and heat

Haven't had any issues.

Amanon

timmmay

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#2696401 22-Apr-2021 07:53

@dulouz that's the one I found earlier, good to hear it works. How did you apply it?

My waterblaster came with this detergent nozzle / tank accessory, which mixes the cleaning solution with water. I guess then I would just put the bleach and dishwashing liquid into the tank with no water as the blaster supplies the water. At 500ml it would need to filled about ten times to coat the house. I wonder if it would mix enough solution in, or if it would be too much water.

tdgeek

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#2696403 22-Apr-2021 08:09

Related question. My Karcher K5 can be used from a bucket/tank, but it apparently requires an optional suction hose. Can I just place the existing Karcher hose into the bucket instead of at the tap? Or if its valved/non-return, attach a short piece of regular hose with no end so its freeflow? I can't find the optional suction hose at Bunnings/Mitre10

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Dulouz

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#2696408 22-Apr-2021 08:16

@timmmay I have one of these https://www.bunnings.co.nz/homelite-2600psi-pressure-washer_p0088750 which has a detergent hose system. I can fill a 10L tank with the detergent mix and do the whole house with one tank.

Amanon

timmmay

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#2696454 22-Apr-2021 08:18

tdgeek:

Related question. My Karcher K5 can be used from a bucket/tank, but it apparently requires an optional suction hose. Can I just place the existing Karcher hose into the bucket instead of at the tap? Or if its valved/non-return, attach a short piece of regular hose with no end so its freeflow? I can't find the optional suction hose at Bunnings/Mitre10

Interesting. The picture on this page of the Bosch website suggests you can with that accessory, but it just looks like a hose with a filter, so I suspect a standard hose will work.

timmmay

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#2696455 22-Apr-2021 08:19

Dulouz:

@timmmay I have one of these https://www.bunnings.co.nz/homelite-2600psi-pressure-washer_p0088750 which has a detergent hose system. I can fill a 10L tank with the detergent mix and do the whole house with one tank.

That's a bit of a beast compared with the electric ones!

tdgeek

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#2696460 22-Apr-2021 08:26

timmmay:

Interesting. The picture on this page of the Bosch website suggests you can with that accessory, but it just looks like a hose with a filter, so I suspect a standard hose will work.

Thats what I'm thinking. The standard Karcher long hose "just" connects to the outside tap. I just want to connect that to the bucket, either directly or bypass a return valve with bare hose. I'll try that in the weekend. The price tag also suggests its just a basic hose set

outdoorsnz

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#2696547 22-Apr-2021 10:30

timmmay:

andrew75:

Yes esp eye protection i ended up in the A&M after i got some in my eyes when using it through the waterblaster. Vision went all cloudy, quite scary. I use goggles now just to make sure...

That's not good, any permanent damage? Maybe I'll wear my swim goggles which completely seal the eye, rather than the safety glasses which still have a bit of ventilation around the side. Except the goggles fog up...

I wore a balaclava. Looked a bit stupid, but stopped the spray drift getting on my face. Hard not to get covered in the stuff with a slight breeze and drips of eaves etc. I cover head to toe. Wonder if getting anti fog spray for the protective glasses would work. That was a bit of a issue.

I can't stand the bleach stuff. Nose smell is stuffed up for days.

Dulouz

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#2696563 22-Apr-2021 10:51

I use these goggles https://www.bunnings.co.nz/3m-chemical-splash-impact-goggle_p0908893 with a 3m respirator - https://www.bunnings.co.nz/3m-performance-reusable-paint-project-respirator_p0216042

The great thing about a respirator is your goggles generally don't fog up. Plus they are reusable for other jobs around the house.

Amanon

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#2696706 22-Apr-2021 14:28

I set up my Bosch waterblaster today with hose into a bucket instead of connecting to the tap. It didn't work well. A small amount of water got into the waterblaster but not much, the motor spent a lot of time making the "I'm running but there's no water" noise. So that rules out using a bucket full of solution. So I can put a concentrated solution into the proper 500ml accessory but it would need to be filled up ten or twelve times times and the waterblaster has a limited hose length. So something that connects to a hose would be good.

I suspect I will get 30 seconds house cleaner, spray it on, leave it a while, hose it off. If there's any problem spots I'll use the brush with sugar soap. If that doesn't do the job fully I'll get the 30 seconds spray and walk away which has benzyl ammonium chloride which takes time to kill moss and such.

outdoorsnz

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#2696975 23-Apr-2021 10:26

timmmay:

I set up my Bosch waterblaster today with hose into a bucket instead of connecting to the tap. It didn't work well. A small amount of water got into the waterblaster but not much, the motor spent a lot of time making the "I'm running but there's no water" noise. So that rules out using a bucket full of solution. So I can put a concentrated solution into the proper 500ml accessory but it would need to be filled up ten or twelve times times and the waterblaster has a limited hose length. So something that connects to a hose would be good.

I suspect I will get 30 seconds house cleaner, spray it on, leave it a while, hose it off. If there's any problem spots I'll use the brush with sugar soap. If that doesn't do the job fully I'll get the 30 seconds spray and walk away which has benzyl ammonium chloride which takes time to kill moss and such.

I have a flat 30 odd liter spray tank. And connected to that is a 12V pressure pump running off a 12V jump starter. Have quite a long strong rubber hose and spray wand. Saves lots of time and means you can make up a bulk solution to do the whole house. I just wheel it around on a flat wheel barrow.

You could also try those rapid hose adapters that 30 seconds etc are heavily promoting now. But I tried than once and thought it was a big rip off because if you have the water pressure to high, it is all gone in 30 seconds!

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