Paint Stripping with High Pressure Cleaner???

[ptrott]

Has anyone tried to remove paint from wood with a High Pressure Water Cleaner, and if so was is successful, and what pressure was it?

Reason I ask is that a long time ago when I had a car detailing business I had a 2,000PSI machine fitted with a 4 lpm ceramic fan tip, and if I got careless with it, paint would start to disappear.

If I could get that to happen on wood....

I'm not bothered by water penetration into the wood because I can wait for it to dry out.

Cheers,
Phill.

[Honorary Bloke]

I'm not bothered by water penetration into the wood because I can wait for it to dry out.

Cheers,
Phill.

Yeah, it sounds great, but how will you pound all that raised grain back down into the wood? And the water that got behind the wood and into the insulation, making it nice and mouldy.

I think that's a non-starter. Pity, really, as it would be otherwise a loverly idea.

[echnidna]

The pressure can also erode the timber itself away

[munruben]

It doesn't usually work, I used high pressure water blasters for cleaning roofs to prepare them for painting and I worked on around 3000psi and although it cleans the dirt and grime off the tiles, it wont remover the paint unless it is flaky. Same with timber, if the paint is flaking greatly then it will remove the loose flake to a certain point but where the paint is adhering hard and fast, it wont remove it completely. Another thing to remember is its a messy job and a lot of cleaning up afterwards.If the water runs into your storm water drains they you can be in a lot of trouble. I used to block the drains and use a bilge pump to pump the dirty water back onto the garden or lawns of the property. Remember you are pumping out something like 13 to 18 litres of water a minute with this equipment.
Also remember the water restrictions if you are in an area where they apply, only contractors are allowed to use high pressure water blasters in preparation for painting.

[munruben]

Just a couple of Warnings. If you choose to go down that path, (I certainly wouldn't) you must also realize that high pressure water blasting can cause a lot of damage to property if not used properly. Also very dangerous to the user if not careful. With the kind of pressure you need to do this kind of work,(probably about 2000psi minimum) if you put your hand in front of the nozzle accidently it would shred your hand to pieces. So please be careful.

[ptrott]

Yeah, it sounds great, but how will you pound all that raised grain back down into the wood? And the water that got behind the wood and into the insulation, making it nice and mouldy.

I think that's a non-starter. Pity, really, as it would be otherwise a loverly idea.

Honorary Bloke, you have got me interested now....what insulation and "behind the wood"??
I am wanting to get paint off a piece of wood, which I assume will get pretty wet, but....
I am a bit confused here so please explain.

After it dries I will sand it lightly, and hopefully that will do.

Cheers,
Phill.

[ptrott]

The pressure can also erode the timber itself away

I should have mentioned, 50-plus yrs. old jarrah (ie almost rock) and a bit of erosion would be less than 20 grit sandpaper erosion which is the other option (wouldn't it)

Cheers,
Phill.

[ptrott]

It doesn't usually work, I used high pressure water blasters for cleaning roofs to prepare them for painting and I worked on around 3000psi and although it cleans the dirt and grime off the tiles, it wont remover the paint unless it is flaky. Same with timber, if the paint is flaking greatly then it will remove the loose flake to a certain point but where the paint is adhering hard and fast, it wont remove it completely.

Understood. My specific problem is getting paint removed in "V" grooves. It is only oil based paint and been there for 20 years probably, but because it has been indoors, it is not very flakey. Don't you recon that paint on a rough surfaced tile would be stuck on a lot better than paint on a dressed wood surface?


Another thing to remember is its a messy job and a lot of cleaning up afterwards.

Thats no problem.


If the water runs into your storm water drains they you can be in a lot of trouble.

Drains???? I live on 5 acres, ...if only the shire would give us drains


Also remember the water restrictions if you are in an area where they apply, only contractors are allowed to use high pressure water blasters in preparation for painting.

We use Rainwater here, all we can catch.
Cheers,
Phill.

[ptrott]

Just a couple of Warnings. If you choose to go down that path, (I certainly wouldn't) you must also realize that high pressure water blasting can cause a lot of damage to property if not used properly. Also very dangerous to the user if not careful. With the kind of pressure you need to do this kind of work,(probably about 2000psi minimum) if you put your hand in front of the nozzle accidently it would shred your hand to pieces. So please be careful.

As stated in the original post, I owned one previously for detailing work.
Used it 6 days a week for 4 years and still got all my skin

Appreciate the concern though. They are not to be played with.

Cheers,
Phill.

[Honorary Bloke]

Honorary Bloke, you have got me interested now....what insulation and "behind the wood"??
I am wanting to get paint off a piece of wood, which I assume will get pretty wet, but....
I am a bit confused here so please explain.

After it dries I will sand it lightly, and hopefully that will do.

Cheers,
Phill.

Ahhh . . . the penny drops. Nine times from ten when people ask this they are planning to knock the paint off their house siding. Apparently you are not, so forget that part. It will raise the grain and as Bob said may damage some wood fibres if you come too close, but I'd try it on a piece and see if I could live with the result.

Personally, I prefer stripping or sanding away the old finish, but that's just me.

[You may have to sand it more than lightly, however.]