Jay C. White Cloud wrote:Hi Judith,
I hate asking questions as part of an answer...Sorry about that...
As for laying a floor the first thing I may suggest is make sure it can take the load!
Many old attic floors where not designed to take second floor live loads. Now that just mean (for the most part...but not always) that the floor just may be a bit "springy." In other cases it means things could break.
There is usually no reason to remove old insulation unless it is invested with mice or other critters, and even then only those badly contaminated section have to be dealt with. I am not sure if you will be insulating above your head, or if this will be a "cold space" or "3 season space??" So if just laying a floor, then there isn't any real "sealing off" of the insulation other than the flooring material chosen itself...wood is most common...and green fresh wood is just fine?
Just to actually get some "real" insulation up there beside that "pink icky stuff" perhaps a layer of mineral wool board then your flooring, which personally I tend to"float" and not try to fasten down, but I tend to like to "joint" things and let wood move the way it always wants too...
Hope that helps...Let me know if I can get into anything else about it...
Angelika Maier wrote:You will have to remove that insulation, and if you want a room there you must insulate the roof. The bats here must be very thick and depending on your climate I might put one second layer of insulation on the inside. If you don't mind noise you simply can nail floorboards on.
I don't mind questions at all, Jay....this is in a house that we are almost up to closing on and just checking out some last minute stuff. We were thinking of the attic space as some storage and an extra sleeping space for company...spring and fall it would be comfortable, I think, with no ceiling insulation.
Terry Ruth wrote:your roof rafters need to be at least 2 x 12's with a mineral wool board and batt your looking at ~ r-36(batt r-30, board r-6) which is minimum in your Z5 climate. If not your heating bills go through the roof Then you have to find heating/cooling ducts that may over load your HVAC. The return line can take FG particles with it to IAQ if the bays are not sealed. A minisplit is a good solution. Wait to you see the cost on all that, not pretty!