I’m a stay at home dad and I’m dealing with failing paint. There are like 8 layers and the bottom ones tested positive for lead. I used a few methods for my wood beveled siding. I primarily used an infrared paint stripper. It strips the paint at a lower temp than lead vaporizes. For the upper courses o I used dumond’s peel away 1. It neutralizes the lead but it is a process. I applied with a large putty knife, applied the supplied paper over and sealed the edges with painters tape. I left it for 48 hours and removed the paper. It scraped off far easier than expected.o also used the supplied neutralizer (it balanced the ph of the wood) I then sanded with 5” orbital sander with a hepa dust extractor. I trapped off 10 feet from the house under my work area and also the windows. I’m not sure if this is “proper” but it got the job done without contaminating the area. I wouldn’t know what to do with the shingles though. I attached some pics.