Mould on artex ceiling....

Beeblebr0x

grumpy_codger said:

Beeblebr0x said:

grumpy_codger said:

Emmia said:

WelshGlyndwr said:

Northern_Wanderer said:

WelshGlyndwr said:

yes it does contain asbestos. Therefore using mould cleaner might disturb it? I suppose using a dehumidifier wont get rid of the mould on its own? 

A dehumidifer will not remove mould

yes you are right but will anti mould spray disturb the artex?

I wouldn't spray (it will go everywhere) instead I'd spray a bleach based product (the astonish mould killer is great) onto a clean dishwashing sponge and wipe before leaving it to dry.

A paint brush works fine and is easier to use.
It's important, that not all "bleach based products" are the same. E.g. Tesco's 70p thick bleach  is no good as it doesn't contain  'Chlorine-Based Bleaching Agent' - unlike, say, their 55p thick bleach. Read the lable!

I wouldn't use a paintbrush on a ceiling as the Astonish will run down the handle and make the OP wet.

Don't know about Astonish, but thick bleach doesn't run if applied wisely. That said, I think a small sponge paint roller will work too, possibly even better.

AFAIK, bleach doesn't kill mould, it only attacks the surface

grumpy_codger

Beeblebr0x said:

grumpy_codger said:

Beeblebr0x said:

grumpy_codger said:

Emmia said:

WelshGlyndwr said:

Northern_Wanderer said:

WelshGlyndwr said:

yes it does contain asbestos. Therefore using mould cleaner might disturb it? I suppose using a dehumidifier wont get rid of the mould on its own? 

A dehumidifer will not remove mould

yes you are right but will anti mould spray disturb the artex?

I wouldn't spray (it will go everywhere) instead I'd spray a bleach based product (the astonish mould killer is great) onto a clean dishwashing sponge and wipe before leaving it to dry.

A paint brush works fine and is easier to use.
It's important, that not all "bleach based products" are the same. E.g. Tesco's 70p thick bleach  is no good as it doesn't contain  'Chlorine-Based Bleaching Agent' - unlike, say, their 55p thick bleach. Read the lable!

I wouldn't use a paintbrush on a ceiling as the Astonish will run down the handle and make the OP wet.

Don't know about Astonish, but thick bleach doesn't run if applied wisely. That said, I think a small sponge paint roller will work too, possibly even better.

AFAIK, bleach doesn't kill mould, it only attacks the surface

Yes, I've heard this, but ...

• the OP wants the ceiling white, not black, don't they? And the right bleach does this.
• I'm sceptical about it not killing the mould. It's hard to believe that anything turning black mould into pure white doesn't kill it. Of course, don't take my word for it. I just don't believe in everything I hear and there are so many urban myths around. Yes, possibly mould survives deep inside and then grows again.

Emmia

grumpy_codger said:

Beeblebr0x said:

grumpy_codger said:

Emmia said:

WelshGlyndwr said:

Northern_Wanderer said:

WelshGlyndwr said:

yes it does contain asbestos. Therefore using mould cleaner might disturb it? I suppose using a dehumidifier wont get rid of the mould on its own? 

A dehumidifer will not remove mould

yes you are right but will anti mould spray disturb the artex?

I wouldn't spray (it will go everywhere) instead I'd spray a bleach based product (the astonish mould killer is great) onto a clean dishwashing sponge and wipe before leaving it to dry.

A paint brush works fine and is easier to use.
It's important, that not all "bleach based products" are the same. E.g. Tesco's 70p thick bleach  is no good as it doesn't contain  'Chlorine-Based Bleaching Agent' - unlike, say, their 55p thick bleach. Read the lable!

I wouldn't use a paintbrush on a ceiling as the Astonish will run down the handle and make the OP wet.

Don't know about Astonish, but thick bleach doesn't run if applied wisely. That said, I think a small sponge paint roller will work too, possibly even better.

I find it's difficult to avoid spraying/flicking off with a roller (at least with paint) - if the room is empty and has no furnishings it would work, but you may end up splattered in bleach... I just tend to wipe/dab at the mould with a sponge moistened with the astonish stuff.

Beeblebr0x

grumpy_codger said:

Beeblebr0x said:

grumpy_codger said:

Beeblebr0x said:

grumpy_codger said:

Emmia said:

WelshGlyndwr said:

Northern_Wanderer said:

WelshGlyndwr said:

yes it does contain asbestos. Therefore using mould cleaner might disturb it? I suppose using a dehumidifier wont get rid of the mould on its own? 

A dehumidifer will not remove mould

yes you are right but will anti mould spray disturb the artex?

I wouldn't spray (it will go everywhere) instead I'd spray a bleach based product (the astonish mould killer is great) onto a clean dishwashing sponge and wipe before leaving it to dry.

A paint brush works fine and is easier to use.
It's important, that not all "bleach based products" are the same. E.g. Tesco's 70p thick bleach  is no good as it doesn't contain  'Chlorine-Based Bleaching Agent' - unlike, say, their 55p thick bleach. Read the lable!

I wouldn't use a paintbrush on a ceiling as the Astonish will run down the handle and make the OP wet.

Don't know about Astonish, but thick bleach doesn't run if applied wisely. That said, I think a small sponge paint roller will work too, possibly even better.

AFAIK, bleach doesn't kill mould, it only attacks the surface

Yes, I've heard this, but ...

• the OP wants the ceiling white, not black, don't they? And the right bleach does this.
• I'm sceptical about it not killing the mould. It's hard to believe that anything turning black mould into pure white doesn't kill it. Of course, don't take my word for it. I just don't believe in everything I hear and there are so many urban myths around. Yes, possibly mould survives deep inside and then grows again.

Why use bleach when you can use Astonish? 

ThisIsWeird

I've personally found Astonish Mould Killer very effective. It will almost certainly do the double job of killing the mould and bleaching away most of the black.
But if that level of condensation is allowed to continue, the mould will return.
See how much of the black comes off first using a good cleaner like sugar soap, and a cloth. 
Astonish only struggles with deeply embedded mould in, say, silicone sealant - it shifts the majority, but black specs tend to remain.
If you keep that ceiling dry, the problem will almost certainly be solved. That may require insulation above, or just a change in lifestyle for that room.
Did you tell us what that room is, WelshG?

grumpy_codger

Beeblebr0x said:

grumpy_codger said:

Beeblebr0x said:

grumpy_codger said:

Beeblebr0x said:

grumpy_codger said:

Emmia said:

WelshGlyndwr said:

Northern_Wanderer said:

WelshGlyndwr said:

yes it does contain asbestos. Therefore using mould cleaner might disturb it? I suppose using a dehumidifier wont get rid of the mould on its own? 

A dehumidifer will not remove mould

yes you are right but will anti mould spray disturb the artex?

I wouldn't spray (it will go everywhere) instead I'd spray a bleach based product (the astonish mould killer is great) onto a clean dishwashing sponge and wipe before leaving it to dry.

A paint brush works fine and is easier to use.
It's important, that not all "bleach based products" are the same. E.g. Tesco's 70p thick bleach  is no good as it doesn't contain  'Chlorine-Based Bleaching Agent' - unlike, say, their 55p thick bleach. Read the lable!

I wouldn't use a paintbrush on a ceiling as the Astonish will run down the handle and make the OP wet.

Don't know about Astonish, but thick bleach doesn't run if applied wisely. That said, I think a small sponge paint roller will work too, possibly even better.

AFAIK, bleach doesn't kill mould, it only attacks the surface

Yes, I've heard this, but ...

• the OP wants the ceiling white, not black, don't they? And the right bleach does this.
• I'm sceptical about it not killing the mould. It's hard to believe that anything turning black mould into pure white doesn't kill it. Of course, don't take my word for it. I just don't believe in everything I hear and there are so many urban myths around. Yes, possibly mould survives deep inside and then grows again.

Why use bleach when you can use Astonish? 

Because if 'Astonish' is 'cleaner/remover', not 'killer', then result will be the same at much lower cost and with smaller number of various bottles in a cabinet.

https://www.sainsburys.co.uk/gol-ui/product/astonish-mould-mildew-blaster-apple-burst-750ml

Ingredients : <5%, Chlorine Based Bleaching Agents, Anionic Surfactants, Non-Ionic Surfactants, Perfume

surfacants =~ soap

You pay extra for a nice bottle, soap and perfume

ThisIsWeird said:

Astonish only struggles with deeply embedded mould in, say, silicone sealant - it shifts the majority, but black specs tend to remain.

A month ago I removed few big black spots with thick bleach. The result was perfect and still is.

Before that I had a bottle of 'wrong' bleach  that I hardly ever use and that lasted for years. Hardly a surprise that it was useless for this purpose.

Beeblebr0x

^ You be you. I've found Astonish works better and is more pleasant to use.