China board trading network news:
External wall insulation technology can be divided into two categories: single material and composite exterior wall. A single material, that is, a single product with good thermal insulation and thermal insulation performance as a wall material, meets the requirements of energy-saving standards. Such as aerated concrete block, ALC aerated concrete plate and so on.
Composite wall, that is composite thermal insulation material on the structural wall. According to the composite method can be divided into three types:
(1) Insulation practices, paste insulation board or poly benzene powder on the inside of the exterior wall. However, internal heat preservation practices will form “thermal bridges†at the intersections of internal and external walls, at the places where the beams are located, and the phenomenon of condensation will occur. Once a problem arises, maintenance will have a greater impact on the household.
(2) Sandwich insulation practices, put the insulation material (polystyrene, rock wool, polyurethane, etc.) in the middle of the wall to form a sandwich cavity.
(3) External insulation practices, increase insulation measures on the outside of the wall. Paste polystyrene board or spray polyurethane on site. The external wall insulation system is a widely used technology. The thermal efficiency of the external insulation is high and does not occupy indoor space. It is beneficial to the protection of the main structure and can prolong the service life of the house and is suitable for energy-saving transformation of existing houses.
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