Hello PPUKers,
A question regarding the internal insulation of solid masonry walls using the warm batten method...
The room in question has had a limecrete floor installed to replace the rather basic 1930s screed poured on top of bricks in the earth (the room used to be an outside courtyard back in the day). We want to insulate two of the walls - one is a single skin external brick wall and the other is essentially a plastered brick wall that used to be the wall of the 19th century courtyard. The room would benefit immensely by properly insulating these walls. The walls have been plastered internally with hard cement render so breathability has long been lost.
My thinking is to use 1 inch battens to fix 50mm of Celotex (or similar) to the walls and then another 25mm of Celotex between the battens to give 75mm of insulation. The seams will be taped with foil insulation tap and any gaps filled with expanding foam. Since the room is going to be used as a kitchen I am also thinking of building a stud wall up against these two walls so that we can hang cabinets, shelves, etc. and fill the space between the studs with 100mm of Rockwoo l. This will provide additional thermal insulation but arguably more importantly, acoustic insulation.
My question is whether to leave a gap between the Celotex insulation and the limecrete floor and if there is something that I should be aware of with regard to the buildup described above and a breathable floor?
Thank you as always.
A question regarding the internal insulation of solid masonry walls using the warm batten method...
The room in question has had a limecrete floor installed to replace the rather basic 1930s screed poured on top of bricks in the earth (the room used to be an outside courtyard back in the day). We want to insulate two of the walls - one is a single skin external brick wall and the other is essentially a plastered brick wall that used to be the wall of the 19th century courtyard. The room would benefit immensely by properly insulating these walls. The walls have been plastered internally with hard cement render so breathability has long been lost.
My thinking is to use 1 inch battens to fix 50mm of Celotex (or similar) to the walls and then another 25mm of Celotex between the battens to give 75mm of insulation. The seams will be taped with foil insulation tap and any gaps filled with expanding foam. Since the room is going to be used as a kitchen I am also thinking of building a stud wall up against these two walls so that we can hang cabinets, shelves, etc. and fill the space between the studs with 100mm of Rockwoo l. This will provide additional thermal insulation but arguably more importantly, acoustic insulation.
My question is whether to leave a gap between the Celotex insulation and the limecrete floor and if there is something that I should be aware of with regard to the buildup described above and a breathable floor?
Thank you as always.