Hello! 

I am renovating a 1938 2-over-2 farmhouse that is ~550 square feet.  I was in  the process of removing the old drywall when a bag of perf-a-tape joint compound fell from the attic and busted open. The contents, maybe 5 pounds, mostly landed in a pile, while a dust cloud enveloped the room I was working in. I had the contents of the bag tested and it contained 4 percent asbestos. I had already removed the contents and the rest of the drywall by the time I got the test results. The drywall was asbestos free. The drywall had not been taped – I guess they just put the powdered compound in the attic and saved it for later.  I have wet mopped and hepa-vacuumed the entire house, and my plan was to spray the entire interior surface with acrylic latex primer to encapsulate any remaining fibers. 

My question is  – — Will it cause any problem for me to have primer on the exposed surface of the framing, roof sheathing, and wall sheathing (1″ thick diagonal wall sheathing)? Will it cause any moisture problems by having one side painted and the other side towards the elements? there is no house wrap, just vinyl siding on top of old brick-patterned asphalt siding. A thought for the future was to replace the vinyl siding with poplar and to put a house wrap over top of the asphalt siding. 

Also, do I need more than 1 coat of paint?

I figured, once encapsulated, I will have the area tested again for asbestos to make sure there is no more abatement necessary. Then I could work on renovations without worrying so much about asbestos. suiting up everytime I go in is getting pretty old. 

Thanks,
Forrest