Would brick acid shift this

[steveo3002]

Had this up the side of the house as long as we lived here so since built in the 50s or proper long time , is this some thing brick acid would sort out ?

 

[MikeBs]

I had very similar at the front of my garage.
Brick acid moved some of it, brick acid and an angle grinder with a wire wheel moved most of it.
For the latter, just me sure you are well protected from any spray that occurs.
My house is built with “rustic bricks” which are contoured and made removing all of it tricky as there was a limit to how much pressure I was prepared to put on the wire wheel.

 

[voipio]

Pressure washing may well be able to shift some of it. Try using a pressure washer capable of 140Bar or higher.

 

[steveo3002]

Pressure washing may well be able to shift some of it. Try using a pressure washer capable of 140Bar or higher.

my domestic one doesnt touch it , and im not bothered about it enough to get a pro onto it

 

[BrokenBiker]

I had very similar at the front of my garage.
Brick acid moved some of it, brick acid and an angle grinder with a wire wheel moved most of it.
For the latter, just me sure you are well protected from any spray that occurs.
My house is built with “rustic bricks” which are contoured and made removing all of it tricky as there was a limit to how much pressure I was prepared to put on the wire wheel.

Poly discs can be good, the ones for stripping paint, although they don't last very long

 

[Kram]

brick acid and an angle grinder with a wire wheel moved most of it.
For the latter, just me sure you are well protected from any spray that occurs.

Please dont do that, not at the same time atleast.

Some of it looks like it is a cementous type product that has been splashed, while other bits look like litchen.

I imagine brick acid will shift or loosen it. Or manually scrape it with a worn out diamond cutting wheel or scraper.

 

[dave h 2]

Please consider bricks are porous and that 50's houses have zinc plated steel ties before waving industrial pressure washers about.

 

[Milkybars]

Make sure you use the brick acid in controlled local area to see what happens. I have used an old brush with shortened bristles to gently agitate the area.
Get the decent strength stuff from builders merchant, wear gloves and eye protection.

If you don't keep it localised you'll end up doing the whole wall !! as it will clean the surrounding brick

 

[steveo3002]

whats a proper strength one i can buy ? alot of the reviews mention its weakend down rubbish now

 

[Milkybars]

They vary between 9 and 16%
Local builders merchant asking or locating (high strength) should get you the 16% stuff (bond it brand appears in google search)

 

[Seadog]

I've got 32%, which was sold for cleaning drains. No longer available without a licence

 

[premmington]

I've got 32%, which was sold for cleaning drains. No longer available without a licence

Brick acid is good for cleaning up neglected toilets...

I once moved into workshop with a limescaled up toilet. Was fixing a builders handy mans van - in the time he was waiting for me to fix his van - he turned my toilet into a new clean one...

 

[northwest]

That's Sulphuric brick acit is usually Hydrochloric or Nitric. Hang on to the sulphuric though as itis the best for anodising.

 

[Seadog]

Not mine. It's definitely HCL. It fumes nicely, too.