Exterior wall insulation issues—Indoor condensation
Because there are too many decorative lines made of concrete on the interior wall. The proportion of concrete pouring has already been determined when doing thermal insulation. The thermal insulation of this part is abandoned. These exposed concrete parts that have not been insulated will cause frost and condensation in the room, which can easily lead to moisture and mold on the wall.


1. The node design of the window is unreasonable.

In energy-saving design, there is only one principle for the design position of windows, which is to set different positions according to different forms of thermal insulation. When using external insulation, it should be close to the outside of the wall. Try to connect the insulation layer and the window as a whole to reduce the insulation breakpoints between the insulation layer and the window and avoid the occurrence of thermal bridges.
Some designers have ignored the impact of heat transfer from external windows on heat consumption indicators in their designs. The windows around the exterior window openings are not designed to be insulated. This results in condensation indoors.

2. The formation of hot and cold bridge.

The insulation breakpoint design is unreasonable. This leads to the formation of a thermal bridge effect around the window opening. Indoor humidity dead spots should be improved. Maintain good ventilation. Fundamentally block thermal bridges;

3. The waterproof design is unreasonable.

The design of the window did not take into consideration the dripping treatment at the top of the root. And waterproof design treatment at the root of the lower opening of the window. Water can easily enter the interior of the insulation system from the connection between the insulation layer and the window root. This will cause harm to the external insulation system.