riclag Posted September 18, 2021 Share Posted September 18, 2021 I have a mold issue ! Is there a primer here that can kill or cover this so it doesn't come back before I apply a coat of paint ? Link to comment Share on other sites More sharing options...
Popular Post sometimewoodworker Posted September 18, 2021 Popular Post Share Posted September 18, 2021 11 minutes ago, riclag said: I have a mold issue ! Is there a primer here that can kill or cover this so it doesn't come back before I apply a coat of paint ? The problem has come due to the area becoming damp from above. Spraying the surface with household bleach will kill the current mould which can be brushed off. That doesn’t address the problem of moisture coming down from above but a good waterproof, probably an oil based paint is best, will allow a longer time before the problem comes back. 2 1 Link to comment Share on other sites More sharing options...
worgeordie Posted September 18, 2021 Share Posted September 18, 2021 Same thing happened to a three year old house next door to us, they had to replace the plaster board, with the kind of boards you have a small piece of in the corner of your photo, boards with slits in, that fixed he problem. regards worgeordie 1 Link to comment Share on other sites More sharing options...
sometimewoodworker Posted September 18, 2021 Share Posted September 18, 2021 I was assuming that exterior board had been used, but of course TIT so maybe not. If not then the only long term fix is replacement with the correct product. 1 1 Link to comment Share on other sites More sharing options...
vinci Posted September 18, 2021 Share Posted September 18, 2021 i think they use regular gypsum board for the outside instead of fiber cement board, doesn't matter what you do it will come back because of moist. 1 Link to comment Share on other sites More sharing options...
Pogust Posted September 19, 2021 Share Posted September 19, 2021 I would suspect there is a leak in the roof material that allow drops to keep the board wet and make it moldy. Suggest first check roof for leaks. Can be further up the roof as water tend to follow beams and drop off at another point. If this is the only moldy place that is the most probable reason. 1 Link to comment Share on other sites More sharing options...
Yellowtail Posted September 19, 2021 Share Posted September 19, 2021 I would not bet either way, but I doubt it's gyp-board. I think gypsum swells up and often comes loose when it's hung like that and soaked for a long time. In any event, it should quit leaking by the end pf next month..... 1 Link to comment Share on other sites More sharing options...
bbko Posted September 21, 2021 Share Posted September 21, 2021 I recently replaced all the ageing wood on my eves/soffit with this vented vinyl material from Home Pro, it's both bug and weather resistant. 2 Link to comment Share on other sites More sharing options...
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