[Matt Gibson]

...Clean this?

I doubt hypo will budge the really heavy staining. Was thinking either HF or a wet soda blast. Am i correct in assuming that when i use soda through the wet blaster, the soda will melt away with the water? as in, there wont be as much clean up as if i was using sand through the wet blaster?

Any advice would be great. The house is about 1 1/2 hours away so i would rather quote from the pics.

Cheers,

Matt

[trevor perry]

get in touch with tensid, it is a 2 stage operation first apply HDL with a brush this is a very strong alkaline cleaner leave to dwell for 20 mins then wash off, when dry you next apply the acid leave this on for twenty minutes and again blast off. these chemicals are very strong and cause severe burns so full PPE must be worn, also all windows and any metal handles etc need to be fully masked as if these chemicals get on them they will be ruined, another alternative is just to have it sandblasted.

[Matt Gibson]

Yeah i've used the HDL before. Its a pain to use, hard to handle and sometimes damages the stone. I'll use it if i really have to, but i know its overkill.

Cheers for the reply..

Matt

[Kev Martin]

...Clean this?

I doubt hypo will budge the really heavy staining. Was thinking either HF or a wet soda blast. Am i correct in assuming that when i use soda through the wet blaster, the soda will melt away with the water? as in, there wont be as much clean up as if i was using sand through the wet blaster?

Any advice would be great. The house is about 1 1/2 hours away so i would rather quote from the pics.

Cheers,

Matt

You really need a TORC & DOFF System to undertake this type of work

Kev martin
Tiling Logistics
Marble Life Ltd

[BDCS]

The principle of soda blasting is the same with whatever media carries it. It changes state from a crystal to a gas (CO2) and the release of energy does the cleaning. Most of the soda will disappear but quite a lot will remain which will disolve in water and can be speeded up with some citric acid. If air is used to do the blasting water can be added to reduced the dust.

[Matt Gibson]

BDCS cheers mate, i was waiting fo you to come along as i know you do some soda stuff 

Do you know where i can get the wet blasting nozzle? im after just the nozzle and possible a probe, i can put together something with a QR fitting so i can just use my existing lance/gun. I've been looking everywhere.

Also, i was under the impression that the soda acted as an abraisive to clean the surface?

You think soda would be the way to go for the pics i attached?

Cheers mate,

[BDCS]

http://www.malcleanse.co.uk/static/Pressure_Washer_Sandblasting_Equipment

Yes but you will need the water resistant coated soda. You can always change to sand should the soda fail to bring it up as expected.

[Blast Away]

You must be mad if you're gonna attempt soda through a wet blasting lance on this Matt.

Cost of attachment. Cost of soda. Tower scaffold etc etc.

All that dwell time above of 20 mins is rubbish too.

This is a 2 hour job once the windows are sheeted. Chem would only need to sit on for a minute or so. Time taking down the scaff to moving across to take into account working in sections. Other than that get a full scaffold erected for about 200 quid, put in your price.

50 quids worth of acid. 25 quid on a roll of sheeting.

[Matt Gibson]

Yeah thats what i was thinking lee. Get some HF and just go for it. Ive decided to go do a test anyway on it so i dont shoot myself in the foot. Im gonna tell her it needs full scaff too.

Havent had much experience with the soda/sand stuff. id prefer to use soda over sand as its an easier clean up (apparently)

BDCS cheers for that mate, i didnt know you could get different types of soda medium.

Im still scared that ill f*** something up when i quote, i wanna get it all sweet from the start and not look like an amtuer. I know im not. guess its the inexperience with the whole being the boss thing. im used to just not giving a poop and letting my boss deal with it..

Cheers guys  

[trevor perry]

You must be mad if you're gonna attempt soda through a wet blasting lance on this Matt.

Cost of attachment. Cost of soda. Tower scaffold etc etc.

All that dwell time above of 20 mins is rubbish too.

This is a 2 hour job once the windows are sheeted. Chem would only need to sit on for a minute or so. Time taking down the scaff to moving across to take into account working in sections. Other than that get a full scaffold erected for about 200 quid, put in your price.

50 quids worth of acid. 25 quid on a roll of sheeting.

whos chemical are you using that you dont need it to dwell twenty minutes, i always use chemical from neolith and if it is not left on long enough you need to do a second application

[BDCS]

Are Neolith from Harben ?

[trevor perry]

flowplant sell neolith chemicals, they used to be based rawtenstall way but i think they are now based in wiltshire.

[Matt Gibson]

How much for the HDL from flowplant? i used to use HDL but it was sold as a paint stripper, in round drums with pop top lids..cant remember who sold it.

[BDCS]

Flowplant are Harben and are in Salisbury. My jetter is a Harben and usually use the depot in Barking where they also stock chemicals
http://www.flowplant.com/chemical_range.html

[Blast Away]

You must be mad if you're gonna attempt soda through a wet blasting lance on this Matt.

Cost of attachment. Cost of soda. Tower scaffold etc etc.

All that dwell time above of 20 mins is rubbish too.

This is a 2 hour job once the windows are sheeted. Chem would only need to sit on for a minute or so. Time taking down the scaff to moving across to take into account working in sections. Other than that get a full scaffold erected for about 200 quid, put in your price.

50 quids worth of acid. 25 quid on a roll of sheeting.

whos chemical are you using that you dont need it to dwell twenty minutes, i always use chemical from neolith and if it is not left on long enough you need to do a second application

If I'd of bumped into you at Paul Cartwrights when your box trailer got dropped off last month we could have had a chat. Give me a bell tomorrow if you want. Going to bed soon, up and out at 4am.

[Matt Gibson]

Used some of neoliths premixed hf/phos on the stone to do a test.. worked a treat and cheap too...one coat, instant wash off, cleaned it up proper..

£40 for 20L and the depots five mins away..

They also do the paintstripper i use..

Cheers for the heads up on flowplant 

[JSMC]

mind post pics when done