Cleaning marshalls monoblock....

[k13wjd]

Bit of a strange one here.

Tommorrow i'm going to be laying 16m2 of marshalls driveline 50 vintage - charcoal.

Bought these a month ago from a local builders supply place ( think locks...)

They were on offer as the pack had been broken up. What i ended up buying was a full pallet never opened, and 2/3rds pallet that had been opened. £8/m2 hence why i bought them.

Looking at the pack that has been open - the are stained quite badly - and a quick test shows a scrub with fairy only removes the residual dust.

Pressure wash once they are down, or will test one with acid ?


Will follow with photo.


Going down on a known solid base, on mortar.

[k13wjd]

https://www.dropbox.com/s/277nkf3dj10el3d/driveline.jpg

[RAPressureWashing]

Had look at the photo, look's sort of oil stain, without knowing what caused the stain, difficult to say what to use, dose it look like it is a surface stain or soaked into the brick?

[k13wjd]

Thanks for your reply - as ever the gent !

That brick came from the centre of a pallet - and has never been exposed since being struck......
Tbh the whole pallet is dirty - i just presume this was residual dust from rubbing during transport etc.

I guess they ARE vintage, so were always going to look odd.

I'll pull the rest of the pack apart and see how bad it is. I guess a pressure wash will help once they are down.....



I'll leave my black limestone question for another day/week/month

[k13wjd]

That one is a from a FULL fresh pallet.......

[RAPressureWashing]

You have more then one type of stain there, look's like a bit of rust? how that would have got into a new pack? maybe metal fillings? some look like it is where the bricks have rubbed together in transit, then there is the brown stains almost like a mould. I'b be inclined to give a few a bleach wash, to see what comes off, the rust won't that's a different approach. If you are going to wait till you have completed the job, allow 4 to 6 weeks if you are concreting them in place before you start hitting the pavers with a pressure washer, allowing time to cure.

[k13wjd]

to be honest, im very very reluctant to lay these tomorrow. If I xant clean them up, its a massive headache.

ill speak to Marshalls in the morning. time is ultra tight.....I can see this being abandoned in favour of fake grass/ 2t of chips ....

[k13wjd]

All sorted thanks to Marshalls.

Quality customer service !