[drive surgeon]

Struggling to remove tippex  from school brick walls. Tried everything. Hot, cold, graffiti chemicals, paint stripper, wire brushes etc. been in touch with tensid and graffiti hotline etc as we are using their chemicals. They seem to think it will shift but it won't. Not sure how many years its been on the bricks but its the worst graffiti we have had to remove. We had to pull off the job today until we find a solution. Just wondering if anyone else has had the same problem. The tippex is everywhere on the walls all around the school. Nightmare job that's cost us time and money already. Cheers.

[Matt Gibson]

Wet blast it? soda or sand.

[drive surgeon]

We haven't done wet blasting before.? Will that not damage brick or pointing?

[Matt Gibson]

Nope. We use the attachment fro exchange engineering. Bag of kiln dried and your sorted. Obviously do a test first. But weve never had problems with damage.

[drive surgeon]

Does it remove most paints? Do you use that instead of graffiti chemicals or do you use it for just stubborn graffiti?

[Matt Gibson]

We have used it for stubborn graffiti. We used it last week on ink stains. Someone threw water balloons filled with ink at a brick building. Nothing would shift it. Used the wet blast and it took it off no worries.
Its a handy attachment to have in the van.

[drive surgeon]

Thanks matt that sounds great. Do you just attach to the lance or do you buy the whole lance? And roughly what is the cost. Thanks

[Matt Gibson]

Its just a nozzle and the probe you stick in the sand. You need to buy some braided hose to attach the two then the nozzle just goes on the end of your lance and the probe goes in a back of sand. You need to tell exchange engineering or whoever you buy it from what flowrate your machine is to get correct nozzle. From memory the nozzle/probe was about £100

[drive surgeon]

Great thanks mate. Will ring them. 

[drive surgeon]

Matt I phoned them and they said I need to have a 20 litre a minute machine where as mine is a standard 15 litres a minute Honda gx 360  at 250 bar.  .     Not sure what I can do now

[Matt Gibson]

Try ebay mate. Sellers name is "qwashers"

Its the wetblast attachment. Any problems give qwashers a call. Very helpfull guy.

[drive surgeon]

Do u think a 15 litre washer will be ok with the wet blaster?

[BDCS]

You just change the nozzle in the head to suit your machine - same nozzle as your gun. I've got the stainless one from Dual pumps as the head has the ceramic insert which lasts longer

[Matt Gibson]

The nozzle in the wetblast nozzle is large. A 15lpm machine will be fine if you get the right wetblast nozzle. The one i got from exchange you can unscrew the nozzle to change it. The nozzle size relates to the flow rate because if the nozzle is too big it wont suck the sand up.

Just get intouch with qwashers they do ones for 15lpm machines.

[drive surgeon]

Thanks Becs and matt