I am now using Soy-Gel as my primary paint remover. At this point these are working out very well and are far better then using those nasty toxic chemical strippers that can reduce testosterone levels in tom cats or even shame my pet skunk. Soy-Gel costs two to three times as much as traditional chemical strippers. It often covers twice the surface area and generally adds less weight to the lead paint disposal. Application time and removal time are about equal.
Less ventilation is required, reducing cost for replacement filters.
Even the same stripper may remove the paint nicely from one side of a room but be unable to soften a similar system on the other side. I compensate by keeping several removal systems available. When I first start a job I do test patches to find the best product for each location. This window was made in 1864. The stripper was applied and left to work for approximately 8 hours.