Hi, I'm in the process of refurbishing my bathroom and plan to install an Omnie Torfloor system. This comprises of 22mm routed chipboard that replaces the existing flooring. The UFH pipes are pushed into the pre-routed slots and then 6mm plywood is glued and screwed to provide the required structural integrity.
The bathroom is on the first floor with living space below. I need to install insulation under the boards to prevent the UFH system heating the space between the joists, so forcing the heat up. Obviously, the lack of conductivity of chipboard will help that, but insulation still needs to be used.
My joists have 400mm centres and are 190mm deep. I've calculated that the "length" of the insulation needs to be around 2.6m.
The supplier of the UFH does not have any recommendations for which insulation should be used under it.
My first thought was to use glass mineral wool. A couple of rolls of Knauf 200mm Super Top Up Loft Roll Insulation would do the trick. Wool insulation would be much easier and quicker to install, especially where there are pipes running between the floor boards. 200mm would also pack out the 190mm depth of the joists just nicely, as Ideally the insulation needs to be touching the bottom of the flooring, to avoid leaving an air gap.
However, I'm aware that wool insulation is not as good at insulating as the board type of insulation, so the other possibility would be to use Kingspan TP10 50mm insulation boards. This would be a more difficult insulation to install as I would need to use battens, fixed to the insides of the joists to hold the 50mm insulation upto the top of the joists. Also, it would be much more difficult to fit it around the pipes.
I would appreciate your thoughts on which type of insulation would be best.
The bathroom is on the first floor with living space below. I need to install insulation under the boards to prevent the UFH system heating the space between the joists, so forcing the heat up. Obviously, the lack of conductivity of chipboard will help that, but insulation still needs to be used.
My joists have 400mm centres and are 190mm deep. I've calculated that the "length" of the insulation needs to be around 2.6m.
The supplier of the UFH does not have any recommendations for which insulation should be used under it.
My first thought was to use glass mineral wool. A couple of rolls of Knauf 200mm Super Top Up Loft Roll Insulation would do the trick. Wool insulation would be much easier and quicker to install, especially where there are pipes running between the floor boards. 200mm would also pack out the 190mm depth of the joists just nicely, as Ideally the insulation needs to be touching the bottom of the flooring, to avoid leaving an air gap.
However, I'm aware that wool insulation is not as good at insulating as the board type of insulation, so the other possibility would be to use Kingspan TP10 50mm insulation boards. This would be a more difficult insulation to install as I would need to use battens, fixed to the insides of the joists to hold the 50mm insulation upto the top of the joists. Also, it would be much more difficult to fit it around the pipes.
I would appreciate your thoughts on which type of insulation would be best.
