What "loft" insulation material would the experts recommend for my needs?
The only heating in the house consists of a wood burning stove in the living room downstairs. It struggles to heat the one room. Upstairs is currently not used, but has a few electric heaters on the few occasions anyone is up there. Above that is a very large loft space.
I want to lift the floorboards above the living room and put some insulation between the floorboards and living room ceiling. There is only around 4 inch gap. The joists are not evenly spaced.
The aim is to help keep the heat in the living room below. It gets very cold in the room in Winter. There is no insulation anywhere in the house at the moment, so heat just vanishes. Due to a large mezzanine type opening between the upstairs and the vast loft, there is just wide open space between the floorboards above the living room and the slate roof.
The house is very old (two hundred years +) with exposed beams, built in stone (two or three feet thick).
At some point in the future the roof and loft will need insulating properly, but the immediate need is just to insulate the living room ceiling.
Suggestions for insulation material?