Thanks for the response. This is interesting because I had come across this material before but was not sure if it was appropriate for this job. I may follow this one up but would still first fit a sheet of outdoor ply to provide a firm surface to mount a light.
Not sure how to finish off the...
Thanks for the response. The plastic covering is something I had not considered, but I want to avoid packing the floor space above because it is so busy with cables.
I have an unenclosed porch integral to the house, such that the upstairs landing floor extends over the top of it. The porch ceiling is lath and plaster and is a source of draughts under the upstairs floor.
I want to fasten new boarding on top of the existing lath and plaster (screwed to...