[chris scott]

Going to try and steam it off on Monday.

Also had reports of plants starting to die in the area! And sticky window sills after they have been cleaned.

What a cock up!

Stick to window cleaning ?  Whats the porch roof made of  ?

[Smurf]

Get some Owltrol Netrol This contains already mixed Oxalic acid . If this is a rust stain it should remove it
Do a test patch !
Ed

https://www.youtube.com/watch?v=n2_RrLTGeBY
Hi Ed, have you tried nitrol before on k-rend and painted render? If so does it have any detrimental effect of the surface or any stained fake wood tudor planking on the walls that the chem may get on?

Reason why I ask is that the render walls on a customer of mine the bolts that hold the wood in place seems to be causing rust stains on the render that the chap would like removed.

[Smurf]

This product F9 Barc looks awsome
https://www.youtube.com/watch?v=x96YA4chx2M
https://www.youtube.com/watch?v=fuPnzdLjNuI

[Aqua Power Solutions]

Smurf, not used Netrol on render but more so on wood , The key ingredient is the oxalic acid . This will brighten up fences , decks  etc
But also used for rust removal .
F9 to my knowledge is not available here only America . Kev Martin I believe has a similar product or more knowledge on this product
Ed

[Smurf]

Thanks Ed,

Looking back on old posts f9 barc was mentioned back in 2015 which is a real pity not one supplier decided to import it from the states to start selling it over here as would sell very well I'm thinking.

[BDCS]

If your that confident it will sell then import it and make a fortune off the rest of us

[Smurf]

Kev is obviously not interested but I'm sure the likes of Benz or Mr Cleaver Wash would be if there was good money to be had.

[Kev Martin]

Kev is obviously not interested but I'm sure the likes of Benz or Mr Cleaver Wash would be if there was good money to be had.

I have a better product here in the UK.  It is made in two different consistencies the  second one is much more viscous and made for walls so it sticks.  Moreover, it is pH Neutral so there!!!  I am very interested but "Rome wasn't built in a day"

I am happy to send out "Free Of Charge" small sample  as long as whoever wants to try it either collects it,  adds it to an existing order from us or covers the postage costs

[Smurf]

Kev is obviously not interested but I'm sure the likes of Benz or Mr Cleaver Wash would be if there was good money to be had.

I have a better product here in the UK.  It is made in two different consistencies the  second one is much more viscous and made for walls so it sticks.  Moreover, it is pH Neutral so there!!!  I am very interested but "Rome wasn't built in a day"

I am happy to send small samples out  as long as whoever wants to try it either collects it or adds it to an existing order from us or covers the postage

Going by the blurb on the f9 site it took 10 years to get the formulation right so indeed "rome wasn't built in a day" kev.
Why try to re-invent the wheel when someone has already developed so say the best rust remover in the world already.

[Kev Martin]

Because ours is better and less expensive

[chris scott]

Try and get a Data sheet for the Barf F9…..

[Smurf]

Because ours is better and less expensive

OK if you say so Kev....prove it on that render cockup 

[Smurf]

Something has ran from the back of the flashing.

We have tried neat Hypo, but it isn't shifting.

Any ideas?

I would try a heavy duty acidic cleaner personally

Is that ph nutral then too  kev

[Smurf]

Try and get a Data sheet for the Barf F9…..

Can't find one for barf 9  chris but have found this which makes good reading   
http://www.jracenstein.com/docs/sds_Front9-BARC.pdf

[Kev Martin]

Something has ran from the back of the flashing.

We have tried neat Hypo, but it isn't shifting.

Any ideas?

I would try a heavy duty acidic cleaner personally

Is that ph nutral then too  kev

Nope, it's acidic but based on my experience Miracle Heavy Duty Acidic Cleaner will probably sort it.  Also the new cleaner wasn't available on the 20th July so although testing was complete the product hadn't arrived.  But even now I still think HDAC will sort it.  The new stuff is totally different but it is pH neutral and designed for this task amongst others.  I think your better sticking with Hypo and Lidl though in cheap and cheerful land and leave the complicated stuff to the specialists.

[chris scott]

Ammonium Hydrogen Diflouride, Phosphoric Acid, Water, Trade secret ingredients
Barf9 is  acid .

[Kev Martin]

Ammonium Hydrogen Diflouride, Phosphoric Acid, Water, Trade secret ingredients
Barf9 is  acid .

Don't tell him you twit

[Smurf]

I'm in no rush so I will wait until it's on special at lidl or aldi 

[Smurf]

Ammonium Hydrogen Diflouride, Phosphoric Acid, Water, Trade secret ingredients
Barf9 is  acid .

Don't tell him you twit

Believe it or not I can read a ph scale... 
At ph of 3.4 it’s not exactly a strong acid is it now.

[Smurf]

This made me chuckle ...dingy pavers my arse as obviously they have no idea what we have to try cleaning 
https://www.youtube.com/watch?v=P2iRFSiAiO8