What materials are commonly used for external wall insulation?

There are three kinds of external wall thermal insulation materials, namely polystyrene board, thermal insulation mortar and phenolic foam. Polystyrene board is a widely used external wall thermal insulation material. Thermal insulation mortar is mainly made of light materials and has the advantage of good durability. Phenolic foam is the most promising building insulation material, which is light and nontoxic.

Polystyrene board, also known as EPS board, is a board which is formed by heating expandable polystyrene beads in a mold. Thermal insulation mortar is a ready-mixed dry powder mortar made of light materials and modified additives. Phenolic foam is a rigid foam made of phenolic resin, smoke suppressant, curing agent and other additives.

Who will repair the damaged external wall insulation layer? This depends on the actual situation, mainly on whether the protective layer of the external wall is still under warranty. If the exterior wall is still under warranty, you should find a contractor or developer to repair it after it is damaged. If the owner can't contact the developer himself, he can also find the property company in the community and let the property company negotiate on his behalf. However, if the shelf life of the external wall has passed, then the general developer will not bear the corresponding responsibility and will not pay the maintenance fee after the quality problems occur at this time. In this case, you can choose to use public maintenance funds for maintenance.

Who should be responsible for the loss of external wall insulation layer? If the external wall insulation layer falls off, then the construction unit and the construction unit should bear the responsibility. Most insulation layers fall off because of quality problems, so the construction unit and the construction unit should not only bear the responsibility, but also compensate for the losses. If the general building exterior wall is still under warranty, the construction unit and the construction unit need to compensate the relevant losses. According to the relevant regulations, the warranty period of the exterior wall decoration project is at least two years, and the specific warranty period depends on the provisions in the contract. During the warranty period, if there are problems such as water seepage on the wall, the construction unit shall be responsible.