Attic Mold Remediation

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soparklion11

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I have a small area of grey-white mold on the sheathing boards of my attic. I fixed my moisture issue and sprayed it with a homemade concrobium mixture (TSP, Sodium carbonate, borax). Its been dry for over a year. The mold looks dead but you can still see some of the grey-white frost. Do I need to remove the mold remnants? If so, how? I'm considering sealing myself into my attic with PPE and respirator, then dry brushing it away - possibly with a brush attachment on a drill. The boards aren't smooth, which complicates the situation somewhat.... I'm also considering retreating with the same concrobium solution when it warms up again (currently December in Pennsylvania). Much of the mold is at the eaves and they are difficult to access. I've already fallen through a ceiling once. This pic isn't my attic, but in the bad parts, mine looked like the left half of the middle board on the left... so less than 50% affected before treatment. Now those areas are less bright but there is still a chalky grey remnant.

Should I spray with a mold primer? I feel like that any moisture that would enter the wood would be stuck in the wood if one side was sealed.

PICTURE is from the internet. My boards started out about speckled similar to the left half of the middle board and now its a darker grey after one treatment. Looks dead to me.

1609533609273.png
 

bud16415

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If you can find someone local that does dry ice blasting that would be the way to go.

There are a lot of videos on line here is one.

 

billshack

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I had some experts in to my attic, they found mold. they opened up the soffits, some one had but 2x3 between the roof rafters on top of the header. effectively cutting of any air flow. So i had them remove the 2x3 and put in Styrofoam vent stapled the roof plywood . then they sprayed a special compound on the areas that were discolored. then reinsulated the attic.
cost a pretty penny , In the end i cut off 1/4 heating bill
 

soparklion11

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I had some experts in to my attic, they found mold. they opened up the soffits, some one had but 2x3 between the roof rafters on top of the header. effectively cutting of any air flow. So i had them remove the 2x3 and put in Styrofoam vent stapled the roof plywood . then they sprayed a special compound on the areas that were discolored. then reinsulated the attic.
cost a pretty penny , In the end i cut off 1/4 heating bill
Thank you for your response. Any idea what that compound was? Was it Concrobium? Or is it more of a paint/sealant?
 

billshack

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Yes it was sprayed on bare wood , it was in a spray bottle. much like Windex, but not Windex. they showed me photos after, mold all gone.
 

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