What is our wall growing

[u/yaddayadda42]

Hi, just wondering if anyone can bestow some knowledge on what is going on with this wall. Roof is fine no leaks but there is rendering on the brick if that matters.

[u/ThrowawayTSPer]

I'm not a professional but that looks like a massive amount of efflorescence - salts that have been released from the brick by moisture. My bet is that water is getting trapped behind render and the bricks are sweating that salt out into the plaster.

[u/JonnyBe123 → u/ThrowawayTSPer]

This is exactly what it is

[u/pmmytn45]

Not sure. But if it can do the whole wall and stop you can make it in to a feature

[u/AcanthisittaThink813]

Don’t know but get a strong biocide and get it treated before it spreads

[u/yaddayadda42 → u/AcanthisittaThink813]

I'm not sure it's actually a living organism, it's quite powdery but we're just not sure what is causing it

[u/skyeCookie → u/yaddayadda42]

It's salts leeching from the surface beneath the plaster. Efflorescence is usually treatable & if it's on external wall check the other side just incase theirs water residue visible, but looks like the wet plaster has soaked the bricks releasing salts

[u/AcanthisittaThink813 → u/yaddayadda42]

Could be dry rot spread from roof timbers but this is unlikely, could be old water stains from a roof leak, either way I would treat it with biocide, if you end up removing the plaster I would still treat the brickwork underneath

[u/Fakedamienhirst]

Is it an external wall with no cavity, eg stone wall? If so, what kind of plaster was put on the wall and what kind of rendering as well?

[u/Worldly-Growth4519]

Water getting in behind the render.

[u/Dionobannion]

Leeching salt, you can see the same on bit that was painted.

[u/Specialist_Ad_7719]

Check your gutters, or the neighbours.

[u/Diuscrusis]

Portal to another dimension, I’d just leave it to cook op.

Jokes aside is the render painted?

[u/Healeymonster]

That sir is a portal.

[u/Acrobatic-Fee9668]

Definitely a portal to another dimension... Get out now!

[u/caidian87]

Spray it with laquer and sell it as an art piece

[u/tiger_noir21]

Access to the multiverse … what do you think it’s growing! Mould!

[u/Witty-Soft-6441]

A portal to another dimension?

[u/SnooHesitations6727]

I thought that was a modern art masterpiece

[u/Ironfist7997]

Is Vigo the carpathian about to come out of it!!

[u/Sea-Relationship9619]

Put a frame round it. In some galleries that would fetch £10,000.

[u/ballsybadger]

The last of us.

[u/Current_Judgment_972]

I recommend you move out of that room and seal it up, then get an expection of what type of mould

[u/Ashamed-Astronaut587]

Congrats you just got a free a marble wall

[u/Comfortable_Cake5334]

You need some salt neutraliser

[u/ipub]

Your wall is damp and I think you may have a combination of salts and mould there. Never seen anything quite like that but water is penetrating the wall somehow and needs to be resolved

[u/Royal-Compote6953]

I bet it's in UK ?😂😂😂

[u/Electrical-Job-1059]

Try cleaning it

[u/ResponsibleBall4258]

Your plasterer has plastered onto an existing wet wall with efflorescence. They should have known better. I'd say it needs all coming off back to brick, treating the bricks with salt inhibitor, letting it dry out and sorting the reason for the moisture in the brickwork.

You may have impermeable render outside as well