I remember seeing this before, may be from the website? I’d be interested to know how the area around the windows was insulated. How do you do that without making the opening much smaller and encroaching on the window frame? I feel that these studies will really help a lot of renovators of old stone and brick buildings understand the benefits and pitfalls of insulating stone and brick walls. Perhaps one answer lies in insulating with breathable materials but just not too much, to allow some of the heat from inside to help keep the walls dry.
The area around the windows has, in accordance with the guidelines, been insulated with thinner insulation plates. The thinnest breathable product is 30 mm thick. If thinner is needed, due to lack of space between the wood windows and the brick wall, a 15 mm non breathable plate can be used. When working with breathable products it is important to use sealing foil between all wood and the breathable product to avoid moisture in the wood. 30 mm breathable insulation was used where the space allowed e.g around doors, and where the space did not allow, or flexibility was needed e.g. the arch above the windows, the 15 mm insulation was used. This solution avoided cutting in the brick wall - which off course is a fairly labour requiring option. You are right, when insulating inside, the walls will generally be colder hence more moist. In order to address this, the walls have been impregnated on the outside in order to keep them more dry than without impregnation. The breathable insulation on the inside walls is 80 mm which allows some heat will escape to the walls, however not noticeable on the indoor climate.
Ribuild Project Thank you. Such an interesting topic. Given the fact that stone buildings can last hundreds of years I guess the adage (in English) “that only time will tell” takes on new meaning. It’s almost as if the buildings are living beings. But they talk to us very slowly! You mention the walls are impregnated from the outside. Presumably this helps to stop moisture from penetrating the stone but does this allow for any drying to the outside?
Very interesting, thank you.
I remember seeing this before, may be from the website? I’d be interested to know how the area around the windows was insulated. How do you do that without making the opening much smaller and encroaching on the window frame? I feel that these studies will really help a lot of renovators of old stone and brick buildings understand the benefits and pitfalls of insulating stone and brick walls. Perhaps one answer lies in insulating with breathable materials but just not too much, to allow some of the heat from inside to help keep the walls dry.
The area around the windows has, in accordance with the guidelines, been insulated with thinner insulation plates. The thinnest breathable product is 30 mm thick. If thinner is needed, due to lack of space between the wood windows and the brick wall, a 15 mm non breathable plate can be used. When working with breathable products it is important to use sealing foil between all wood and the breathable product to avoid moisture in the wood.
30 mm breathable insulation was used where the space allowed e.g around doors, and where the space did not allow, or flexibility was needed e.g. the arch above the windows, the 15 mm insulation was used. This solution avoided cutting in the brick wall - which off course is a fairly labour requiring option.
You are right, when insulating inside, the walls will generally be colder hence more moist. In order to address this, the walls have been impregnated on the outside in order to keep them more dry than without impregnation. The breathable insulation on the inside walls is 80 mm which allows some heat will escape to the walls, however not noticeable on the indoor climate.
Ribuild Project Thank you. Such an interesting topic. Given the fact that stone buildings can last hundreds of years I guess the adage (in English) “that only time will tell” takes on new meaning. It’s almost as if the buildings are living beings. But they talk to us very slowly! You mention the walls are impregnated from the outside. Presumably this helps to stop moisture from penetrating the stone but does this allow for any drying to the outside?
What is that isolation material called?
The house was insulated with IQ-Therm, 80mm. Furthermore it was hydrophobized with Funcosil FC.