[Slacky]

Benz Softwash recommend Biocide for wood preservation and treatment.

[p1w1]

Is that job of the wood the final finish as it doesn't look to be  that great of a result especially if they want to stain it .  Not knocking your work just generally interested if that is the best the softwashing has done.
I've had a few customers recently ask to clean  a bit of render etc ( for some reason they think just going over with pure water will do the job)  but as i've no clue really on softashing and the use of hypo ( i prefer to know what i am doing before selling a service)
I'm just interested on this post and the lessons your learning. Have you done render cleans with hypo? 

[Slacky]

Yes, thats it.

But Im wondering if I over diluted. I was using Benz Blackwash (which is 10%) and diluted that to 10%.

So, now Im thinking does that mean it was just a 1% mix?

[nathankaye]

Black wash is basically an expensive soft wash (made with hypo,)

You seem knowledgeable in this area Nathan, what is "softwash" ? I thought it was a technique, using whatever substance you need for whatever problem you face. You seem to imply (to me at least) that softwash is some sort of chemical thing ?

Soft wash in this sense I am implying is a mix of hypo, water, a surfactant and a scent base mix. Soft wash as supposed to a hard wash using a high psi pressure washer.
But this you know, and I took the bait, oh well only missing the adverts on TV 

If the wood is being treated afterwards then yes using a weak mix of hypo (which I and others have suggested) is perfectly OK to do so.

[Plankton]

Yes, thats it.

But Im wondering if I over diluted. I was using Benz Blackwash (which is 10%) and diluted that to 10%.

So, now Im thinking does that mean it was just a 1% mix?

I would have thought about 3% so 7 litres water to 3l Blackwash

[Slacky]

The boys at Benz are recommending a 10% wash. I’ll pop back tomorrow and give it another splodge,  see what that does.

[Plankton]

This is where it gets confusing. Although I wouldn't have thought they would apply it neat and I wouldn't have thought they would dilute it down to 1%

[CleanClear]

Blackwash at 10%

This deserves a bump........................

[Slacky]

This is where it gets confusing. Although I wouldn't have thought they would apply it neat and I wouldn't have thought they would dilute it down to 1%

I’ve gone back and asked him to clarify.

[Plankton]

Third paragraph down it says 1 to 2% hypo http://www.bonnymans.co.uk/products/product.php?categoryID=1929&productID=8846

[CleanClear]

Benz Softwash recommend Biocide for wood preservation and treatment.

etc. etc. etc.....

[Plankton]

Your/their right but it takes longer to do the job. For my garden I'll spray left over antifungal wash on the fence and garage render and I know it'll sort out the algae but on a job it's "softwash"

[Smudger]

Matt before you go any further I’ll get you the name of what you need I’m in the horse piddle atm but I’ll post later

Hypo will clean it but you need pressure on it as well use 25 deg nozzle

Darran

[Slacky]

Cheers Darren!

[Slacky]

I went back today to take another look.

It looks better than yesterday IMO. I'd only really concentrated the chemical on one particular piece of wood. It looks good when you're face to face with it. I think a properly addressed cleaning visit to it instead of just pouring a 2% mix on it and waiting for two minutes will do the job.

[Plankton]

I thought that was the finished article 

[andyM]

After all this piddling about, backwards and forwards it probably would of been quicker to just run a Sander over it! 

[Slacky]

I thought that was the finished article 

Nooo, lol.

[Elfyn]

I'd pressurewash it - just to be safe. That way you know that there won't be any problems with (a) whatever it's going to be painted with and (b) any runoff causing problems somewhere else.
I find timber - especially softwood like this - comes up very well with pressure washing. A quick sanding and it's ready to paint.

[Plankton]

How did it progress?