Removal & treatment of mold before decorating

OU812

One of the rooms has some black mold (sp?) spotting on the walls, it's bad enough to be noticeable but not "too" bad.

Looking for advice on how to get rid of it & ensure it doesn't some back.

The room needs to be decorated, so I was thinking of washing the wall with bleach today, tomorrow painting with some of that liquid glue stuff that goes on white & dries clear, then an undercoat (which type?) & finally the colour coat which will probably be a matt emulsion.

Thoughts or suggestions ?

CarrickMcJoe

Wash down with bleach or sugar soap will be enough. I take it that it's polybond you are thinking of applying. No need, could get messy in the long run. Just apply 2 coats of emulsion on ceiling and walls. Sometimes emulsion can ciss on polybond.

cerastes

Ive read bleach wont do the job,but cant confirm myself. You can get mould cleaners in supermarkets in a spray bottle (maybe DIY places too), dettol do one, Ive used it and found it effective, others might have better or cheaper solutions from homemade mixes.

Im not sure what this liquid glue is? do you mean PVA? diluted down, depending on how much scrubbing is needed, Id dry it out after cleaning with mould cleaner by heating the room, then maybe prep it by sugarsoap washing, dry again, see if there is some kind of primer for plasterboard, there is a B&Q own brand (Im sure there are name brand items and other places probably have their own brand too) PVA might do the same job but not sure how well paint over that will adhere.

sky6

The first thing to remember is that Mold is extremely dangerous and should be treated as such. Make sure to wear a mask while washing it away.
Then wash all the Walls down with Sugar Soap to remove all dust particles , Marks etc from the Walls. Just a quick wash will do.
You only need to use Polybond or Evobond if the Walls are flaking in parts.
A thin Coat of say 5 to 1 will be adequate for you to paint over. that is 5 parts water to 1 part Polybond.
Use a brush to paint in the Ceiling Lines and Corners and a Roller to paint the Walls. don't overload the Roller and Roll slow to keep Splashing to a minimum. That should do the job for you.

MicktheMan

First thing to remember is that the mould will return if you don't understand and address the cause (regardless of how you treat it now).

3 parts water to 1 part white vinegar in a spray bottle will kill what is there at the moment.

oisinbutler

OU812 wrote: »

One of the rooms has some black mold (sp?) spotting on the walls, it's bad enough to be noticeable but not "too" bad.

Looking for advice on how to get rid of it & ensure it doesn't some back.

The room needs to be decorated, so I was thinking of washing the wall with bleach today, tomorrow painting with some of that liquid glue stuff that goes on white & dries clear, then an undercoat (which type?) & finally the colour coat which will probably be a matt emulsion.

Thoughts or suggestions ?

Mould killer would be your best bet to kill and remove. If its just a small amount of mould then bleach in some warm water should do the trick. If it looks like the mould isn't coming off then go get some mould killer & mould block.
Once the mould is gone you can just paint as normal. Theres no need for PVA/Polybond. Just use emulsion.
To stop it coming back you will have to make sure the room is properly ventilated and heated. Mould needs a little moisture and stagnant air to thrive.

cerastes

had mould in a room, where a person, shut off the heating and kept the windows closed, presumably to preserve whatever heat was in the house, on the ceiling where it formed in the corner of the room, I went above to the attic and found the insulation folded back, making the ceiling underneath even colder and more prone to moisture condensing there, make sure any insulation above the room if its under an attic, has the insulation fitted without gaps and is adequete thickness.

Ventilation and heating are the best things to prevent it in the future once its dealt with.

650gs

First off find out why the mould is there because if you don't it will come back no matter what.
Next as you have been told already wear a mask, its kind of like asbestos it floats in the air and one single microscopic spore can grow inside your lungs VERY DANGEROUS stuff.
Then buy a proper cleaner/killer any good paint shop will sell this and its not dear then paint the area with Bin primer http://www.decorireland.com/Zinsser-B-I-N-Primer-Sealer
Then paint as normal

MicktheMan

650gs wrote: »

its kind of like asbestos it floats in the air and one single microscopic spore can grow inside your lungs VERY DANGEROUS stuff.

Imo, comparing mould spores to asbestos fibres is a tad extreme. There are mould spores in the air everywhere regardless.
Do you have any links about mould growing in the lung or what this condition is called?

gctest50

one of many

Aspergillosis can range from mild to life threatening.

http://www.nhs.uk/conditions/Aspergillosis/Pages/Introduction.aspx

oisinbutler

gctest50 wrote: »

one of many

'Aspergilloma usually only affects people who have an existing lung condition, such as tuberculosis (TB), which means that they have cavities or damage in their lungs'

Just took this quote from the link you posted.

There are lots of different types of mould, as far as I know, most are harmless in small quantities.

If you have a few spots of mould on a ceiling or wall and want to remove it then all you really need in the way of P.P.E. is some rubber gloves. Theres no need for respirators and tyvek overalls.

Water mixed with some bleach, no more than 10:1, will kill the mould. I tend to come accross mould a fair bit in my line of work so instead of using bleach I use a mould killer. Its handier to use.

If you have quite a lot of mould then thats a different kettle of fish.

michael999999

Wash off with bleach.

Then give it a couple of coats of Zinsser anti mould and milder perma white paint. I put it on a bathroom 6 years ago, the mold never returned!

Oh and never use pva on emulsion!