1. Energy-saving renovation of building exterior wall insulation can protect the main structure and extend the life of the building. Using external insulation technology, since the insulation layer is placed outside the building envelope, it buffers the stress caused by structural deformation due to temperature changes and reduces the erosion of the envelope structure by harmful gases and ultraviolet rays in the air. Facts have proven that as long as the wall and roof insulation materials are properly selected and the thickness is reasonable, external insulation can effectively prevent and reduce temperature deformation of walls and roofs, and effectively eliminate common oblique cracks or figure-eight cracks. Therefore, exterior wall insulation effectively increases the service life of the main structure and reduces long-term maintenance costs.
2. Basically eliminate the influence of thermal bridge. Thermal bridges refer to the main channels for heat dissipation formed at the junction of interior and exterior walls, structural columns, frame beams, door and window openings, etc. For internal insulation, thermal bridges are unavoidable, while external insulation can not only prevent condensation at the thermal bridge parts and mildew on the walls but also eliminate heat loss caused by thermal bridges.
3. The energy-saving renovation of building exterior walls has improved the moisture content of the walls. Under normal circumstances, internal insulation must be equipped with a vapor barrier. When external insulation is used, since the main structural material with high vapor permeability is located inside the insulation layer, as long as the insulation material is properly selected, condensation will generally not occur inside the wall. Therefore, No need to install a vapor barrier. At the same time, after external insulation measures are taken, the temperature of the entire wall of the structural layer is increased and its temperature content is reduced, thus further improving the thermal insulation performance of the wall.
4. Helps maintain stable room temperature. Because the structural layer with greater heat storage capacity of the external insulation wall is on the inside of the wall, when the room is subject to unstable heat, the indoor air temperature rises or falls, and the structural layer of the wall can absorb or release heat, so it is conducive to maintaining a stable room temperature.
5. Facilitate energy-saving renovation of old buildings. Compared with internal insulation, the biggest advantage of using external insulation to carry out energy-saving renovation of old houses is that it does not require temporary relocation and basically does not affect the user's indoor life and normal life.
6. It can avoid damage to the insulation layer due to decoration. During decoration, the inner insulation layer is easily damaged, but external insulation can avoid this problem.
