What are the best methods for removing mold and ensuring it does not return?
Mould should not be underestimated and the response is largely depended upon the type, severity, etc. It is best to have an inspector come in to inspect the area to ascertain whether the job falls into the do-it-yourself category for the home owner or if, in fact, it requires professional treatment and protective equipment.
Kingsway Construction Inc.
In addition to what Glenn said (and I agree that it shouldn't be underestimated), you didn't say how extensive the mould situation is? Small mounts of mould can be readily removed with bleach. I know some people like to recommend using a bleach and water solution, but I'm in favour of full strength. My only comment about using bleach is be very careful about finishes on or around the area where you are working. After testing on an inconspicuous area, spray the affected area with bleach and allow it to sit for 2-5 minutes and then wipe it off. Follow that with a spray of clean, fresh water to neutralize the bleach and again wipe the area clean. This *should* kill off the mould spores, but it may require several attempts. Don't try to do it all at once. It's better to attack it in stages than to overwhelm the area in tons of bleach. If you find it around baseboards, you should remove the baseboard to determine if the problem is more wide-spread behind the wall. If you encounter large amounts, do as Glenn says and contact a mould remediation specialist to determine the best course of action.
If the mould is dense and in an area larger then 1 meter square then as the other gentlemen stated you should look into professional help. There are many contractors and consultants that will be able to assist you. If its a small area then there is a product called microban. It is a waterbased chemical that won't harm the user and it says it won't stain. You can spray it with a simple water sprayer directly on the mould and it will kill it. If the mould keeps coming back then it is probably in your walls and all you are killing is the surface. You can also rent an air scrubber that will filter out the mould spores in the area. Hope this helps.
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