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Wanderers Ways. Neil Thompson 1961-2021

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Getting Mastic/Silicone off Brickwork

Anyone any idea of the best way?

Ripped some plastic cladding off the front of the house and it had been secured using the stuff. Lines and lines of it. White, brown and clear

Absolute bastard to get off as the brickwork is rough rather than smooth

Folk on line recommending WD40, vinegar and a product from Screwfix but all get pretty poor reviews

Anyone had any success??

Featured Replies

Have you tried rubbing it with a bloon?

  • Author
Just now, Sweep said:

Have you tried rubbing it with a bloon?

Obvs the first thing I tried 

What colour bloon?

and did you throw yourself down the stairs beforehand?

Can buy silicone sealant remover. Like a brown jelly.

I used to work at a place that made it: alkyl benzene sulphonic acid dissolved/dispersed in odourless kerosene, thickened with silica powder if you fancy making your own! :)

Certainly works in bathrooms so don't see why not on brick.

  • Author
48 minutes ago, Morizio said:

and did you throw yourself down the stairs beforehand?

Don’t be ridiculous I threw Mrs Manc down

  • Author
38 minutes ago, gonzo said:

Did wonder about this stuff but wasn’t sure about an absorbent surface like brick? Got some brick acid to clean some cement drips a while ago. Prob was it was eating the cement between the bricks

Was considering a blow torch until I read on a forum that silicone can be highly flammable and folk have set their houses on fire 

 

  • Author
35 minutes ago, Tonge moor green jacket said:

Can buy silicone sealant remover. Like a brown jelly.

I used to work at a place that made it: alkyl benzene sulphonic acid dissolved/dispersed in odourless kerosene, thickened with silica powder if you fancy making your own! :)

Certainly works in bathrooms so don't see why not on brick.

It’s the absorbency of the brick that seems to be the problem mate. Bathrooms are fine with a solid surface but bricks are another level. 

Got some stone cleaner in the van, I'll check in the morning if it works on silicon 

42 minutes ago, MancWanderer said:

Did wonder about this stuff but wasn’t sure about an absorbent surface like brick? Got some brick acid to clean some cement drips a while ago. Prob was it was eating the cement between the bricks

Was considering a blow torch until I read on a forum that silicone can be highly flammable and folk have set their houses on fire 

 

Ah, don’t worry about a little fire.

You’re insured aren’t you?

 

Seriously, I wudda thought Gonzo/Miami would be ITK.

51 minutes ago, MancWanderer said:

It’s the absorbency of the brick that seems to be the problem mate. Bathrooms are fine with a solid surface but bricks are another level. 

You may well be right. The gel we made was thick and you pasted it onto the silicone itself and broke it down. I'm talking nearly 30 years ago, so things may be different now (banned maybe) :)

17 minutes ago, Steejay said:

Ah, don’t worry about a little fire.

You’re insured aren’t you?

 

Seriously, I wudda thought Gonzo/Miami would be ITK.

Fear not, I'm here.

Get some peroxide on it....if it doesn't work, it'll make your hair blonde again 😊

Manc Wanderer can borrow my blow torch if he likes, though these bits of kit shouldn't be used by amateur players 🤭😉

 

1 hour ago, MancWanderer said:

It’s the absorbency of the brick that seems to be the problem mate. Bathrooms are fine with a solid surface but bricks are another level. 

Scraper first, then peroxide....works every time for me mate.

If not, then knock the wall down and build a new one....works every time for me too 😂

Wd40 worked on my bath and bathroom tiles. Took me 6 hours to reseal a bath and 2 trips to wickes. 

Fucking hate DIY me. I'd just move house if I were you. 

4 hours ago, Tonge moor green jacket said:

You may well be right. The gel we made was thick and you pasted it onto the silicone itself and broke it down. I'm talking nearly 30 years ago, so things may be different now (banned maybe) :)

Trike 111

Trichloroethylene?

That used to break it down, but they stopped us using that

Gencleans another name rings a bell

Possibly a trade name for it

Stuff I've got doesn't mention silicon, more fir general cleans Inc Moss and algae etc 

Sorry 

8 hours ago, Casino said:

Trike 111

Trichloroethylene?

That used to break it down, but they stopped us using that

Gencleans another name rings a bell

Possibly a trade name for it

Genklene went a while ago. Montreal protocol.

A good solvent for silicone fluids, but not quite as effective on cross linked silicone sealants.

Methylene chloride was used as a replacement in some of the products we manufactured but it's not a pleasant material (neither is genklene for that matter). Also took some time to reformulate.

Like I said though, been out of the game for too long now to know what stuff is available now.

  • 3 months later...

Spoke to an old fella that in Longridge on Saturday. Said he’d been a stone mason for 60 years. 

The best way to clean stone or brickwork is battery acid apparenlty. Mix it with water, blather it on, watch it bubble and sizzle then rinse the fucker off. 

On a similar note how do I get cream masonry paint off plastic door frame and sill

6 minutes ago, athywhite1958 said:

On a similar note how do I get cream masonry paint off plastic door frame and sill

Peroxide will do it mate. Fiver a bottle from windowplas on Lever St.

No worries Ricky, the official name is UPVC cleaner , takes masonry paint off no problems at all pal 👍

On ‎14‎/‎04‎/‎2020 at 02:28, Casino said:

Trike 111

Trichloroethylene?

That used to break it down, but they stopped us using that

Gencleans another name rings a bell

Possibly a trade name for it

We used Trike in the RAF. Lethal stuff. Probably why it got banned, and probably the reason I have had a permanent cough since about 1987 due to breathing that stuff in whilst doing a certain cleaning task on Tornado Jets.

A note of caution when cleaning brickwork. When a brick bakes in an oven if is similar to bread in that it has a crust or outer layer. Highly corrosive products can strip this layer leaving the soft underside which looks nice and clean but is also highly friable and will degrade over the years. Also be wary of older lime mortars which can be damaged and finally do not replace them with cement mortars as they will cause all kinds of problems. 

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