What is the best way to insulate the facade of the house with siding finish?
House of foam silicate blocks, row width 300 mm. What is better to insulate? Rockwool density of 80, a thickness of 10 cm or foam thickness of 10 cm?
The facade will be ventilated. Cladding will be siding.
Siding is the following:
— battens;
— Styrofoam or mineral wool;
— waterproofing film;
— siding.
Answers
If you use foam as a heater, it loses all meaning of ventilated facade.
The walls of the house should "breathe" – this is the main condition for a ventilated facade. And the vapor permeability of polystyrene foam is close to zero.
And one more point (if we are talking about a ventilated facade) between the insulation and siding should be a gap of 20-30mm
I tend to use mineral wool for insulation and sound isolation.
Put a rockwool. The outside is not waterproofing, but a windproof membrane.
Your walls are vapor permeable, so you need ONLY wool. As correctly written earlier – the vapor permeability of each layer should increase from the inside out. And the film should be vapor permeable (windproof membrane).
