Epoxy curing agent Knowledge Causes of cracks in the external insulation system of thinly plastered benzene board exterior walls

Causes of cracks in the external insulation system of thinly plastered benzene board exterior walls

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Causes of cracks in the external insulation system of thinly plastered benzene board exterior walls

The styrene board thin plaster exterior wall insulation system is one of the most commonly used insulation systems for exterior wall insulation in China. It is also an exterior wall insulation system with relatively mature technology in my country. However, due to various reasons such as building structure form, system materials, construction technology, construction management, etc., it is easy to cause cracks in the insulation system.

Crack manifestation types
45-degree diagonal cracks between frame beams and columns and infill walls, window corners, and other structural cracks caused by settlement and load, etc.

Insulation Cracks in the anti-cracking mortar layer above the plaster layer
1. Cracks and water seepage caused by incomplete processing of window sills, parapets and other details;
2. Cracks caused by incomplete mesh overlapping;
3. The mortar used to plaster the surface fails due to poor flexibility or the construction environment. Cracks in the surface layer caused by unsatisfactory construction methods;

Cracks in the surface layer caused by defects in the insulation layer;
1. Cracks caused by deformation of board seams and shrinkage;
2 , Cracks at the junction of insulation and non-insulation;
3. Cracks caused by pasting of insulation boards, insufficient anchorage, hollowing, etc.

Cracks in the thermal insulation system may affect the appearance at least, or may seep or fall off at worst, losing the energy-saving effect and shortening the service life of the building. Therefore, we must pay special attention during construction to avoid cracks in the external insulation system of thinly plastered benzene boards.

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