Is there an easy way to rid a wall of mold without opening the wall? If no, what is the best solution?

Is the mold on the surface of the painted surface?

In what room(s) does this occur?

Are the walls insulated?

soda blasting will clean five to ten square ft. per minute. soda kills mold spores helps to stop regrowth. http://www.sodaworks.com

Find the cause of the mold first so you don't waste your time and money. If there's a leak inside the wall you may need to open the wall to fix it right.

IF THE MOLD IS FROM MOSTURE FROM OUTSIDE THEN YOU MUST TAKE CARE OF THAT PROBLUM FIRST. THEN IF THAT HAS BEEN TAKEN CARE OF AND THE SHEETROCK HASN'T BEEN DAMAGED TO MUCH, THERE ARE MOLD SPRAY'S THAT WILL KILL THE MOLD AND MOLD PAINTS THAT PREVENT IT FROM COMEING BACK.

Thank you Cornhusker bob. Can you tell the name of a mold spray and mold paint? The area the moisture came from has already been closed off. I now need to kill the mold in the wall and repaint.

The easiest, best, and right way to get rid of the mold and take of the moisture that caused it is to have a remediation specialist come in and assess the problem. Many should do this without charge. I do. This will give you an idea of what you really are dealing with. Any mold issue that covers more then a small area is not a DIY or even a hired handyman project. "A little bleach" method is not the way to handle a mold problem. It may be much less expensive then you think, especially if you do the rebuilding yourself, if there is any tear out. Doing it right is always less expensive in the long run.

I have a mildew problem, also. The sliding glass door leaked and there is moisture in the wall. The door was sealed but there is a moisture reading in the wall according to a mildew expert. Will I have to open up the wall or will it dry up nowthat the source was sealed?

Usually, when you find the source of the mold problem... meaning the leak or cracked sill.. etc.

You will then need to correctly make sure the mold is gone for good. Because if not it could amplify.

So how do you do this...

Two ways,

One is just apply a mold removal and mold encapsulate product on all the mold (if you can reach it)

The second is remediation, and this you can do yourself as well. Just need to make sure you have the right equipment and can seal the area

You can find out the Mold Removal Video right mold procedures to remove mold yourself if you need to go that route.

With all due respect. Depending on the material that the mold is growing on determines the remedy of the job. Mold as you know grows into wood, plaster and bio-degradable materials.

Simply washing off and then spraying on an encapsulate is not always the correct answer. You MUST remove the source of the moisture first! Not doing so will only cause the growth to move to another location where it will begin to develop again.

You also can go to the web site http://www.epa.gov/mold/index.html which does not cost anything and learn all about this stuff and how to correct it.