The source of the leak has been fixed, however the old mold keeps showing though the new paint.
Don't try painting over mold. Use bleach to get rid of it first. Make sure the entire area is completely dry. Then use a special anti mold paint.
Kilz is not anti-mold paint.
Once the source of the moisture has been corrected, go to your local Home Depot and buy Concrobium fungicide spray. It's all natural and an encapsulant. It comes in a spray bottle. Follow the directions. This will kill the mold as well as prevent new mold from growing.
Once that is done you can cover the area with Zinnser Bulls Eye 1-2-3 Waterbase Primer. The bulls eye IS mold and mildew resistant. If you have a lot of water stains you may want to go with something stronger like Zinnser Guardz, but Kilz will not help you out in the water stains or mold issue.
A product called "Killz" is an anti mold paint. Might try spraying the area down with a bleach/water mixture (I believe the ratio of 1 part bleach to 10 parts water is sufficient). Spray it down and let it dry. The bleach should kill the mold off in a few days.
You need to:
- If possible - remove the source of dampness (not always possible)
- Dry the area
- Paint on a damp-seal product (many available)
- Once dry you can paint over the damp seal.
It's best to go with a natural, organic and effective remedy. I've been in the business 12 years. First use a roller, dip it in vinegar, ( rice wine or apple cider) Then you have to use a special Lime Paint over a quartz-stone primer. this will eliminate all mold permanently. It raises the alkalinity levels in the air so mold can't grow on it.
I've had success using aluminum spray paint to cover old water stains on the ceiling.
NEVER use Borax or Bleach! It does not kill the mold spores!! It only removes the mold stain! Use white distilled vinegar and hydrogen peroxide.
You need to kill the mould spores first. First use a sugar soap to thoroughly clean the surface. Then obtain a mould killing chemical (there are lots of them, go to your local hardware store and ask).
Finally, a good sand down and apply a stain blocking primer/undercoat such as those from zinsser or dulux. Ideally something oil based. Then a couple of top-coats of your normal paint and you should be sorted. You can get paint additives or paints that come with anti-mould compounds in them these days. I'd recommend that particularly if it's an area that gets damp often (like a bathroom or laundary).
Earthpaint has a product called Lime Primer. I just ordered one and will see how it works. You can directly put it on mold and they guarantee that mold will not grow on the primer.
protected by BMitch♦ Oct 1 '13 at 2:23
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