My house was built about 1950 and one thing that always struck me as odd
(well, since I noticed it anyway) was that there was no access to the attic.
While doing some roof repair I took the opportunity to look down through a
vent hole and I figured out why. When this house was originally built, it
appears that it had a flat roof. There is a layer of whatever gravel/rock
aggregate they used for flat roof covering at that time on the floor of the
"attic" space. At some point another cottage style roof was built on top of
that one but no access to the created attic was put in.
Now I have to take down the chimney and would like to insulate the attic as
well so I have to figure out a way to get at it. Since there are no gables I
can't go through from the side and going through the roof wouldn't be a
permanent solution, so I have to come up through the ceiling.
To make a long story slightly shorter, does anyone know what that rock
aggregate is made of, how thick it might be, and what I might use to cut
through it? The ceiling underneath it looks like 2x6 joists and then on top
of that planks about 6 inches wide and I would guess a half inch thick if
they're anything like the planking in the rest of the place, and then on top
of that I assume is the flat roof covering.
Possible to get through from underneath?