Advantages And Disadvantages Of New Eps External Insulation Materials

EPS is the abbreviation of expanded polystyrene foam. EPS external thermal insulation system is a new structural system that integrates wall thermal insulation and decoration functions composed of special cement, board, glass fiber mesh cloth, and decorative coating. The system has been gradually promoted and developed since the oil crisis in the 1970s in order to minimize the energy consumption of civil and industrial buildings and facilities. Especially with the continuous improvement of materials and application technology, EPS external insulation decoration system has become today One of the most competitive systems in building energy-saving walls. This system is also very suitable for my country's building energy conservation. Some large cities in my country introduced or developed similar systems a few years ago, but their promotion and application have been restricted due to their high cost or poor quality. EPS Sandwich Panel manufacturer shares this article with you.

The new EPS external thermal insulation finishing system is a simple and easy-to-operate external thermal insulation technology with outstanding features such as simple and quick construction, convenient design, short cycle, and a small number of drawings. The system absorbs and digests the advantages of various composite walls and internal thermal insulation walls, especially the advantages of EPS building module walls and EPS board sandwich walls. The focus is on the bonding glue between EPS boards and external walls. Ideally, solve the key technical issues such as bond strength and freeze-thaw resistance, overcome the cumbersome construction of prefabricated building modules, sandwich walls, and wire mesh sandwich panels, fail to completely eliminate thermal bridges, and low energy-saving effects. Disadvantages. The system has the following advantages:

EPS Sandwich Panel

1. Lightweight

It usesEPS Sandwich Panel as the insulation layer, plus the bonding cement, the glass mesh reinforcement layer, and the finishing paint. The weight is only 2～3Kg/m2, which is negligible for the wall. This is especially beneficial to the energy-saving renovation of existing buildings. The thermal insulation layer is very thin. For example, it only needs 40-60mm, which can meet the requirement of energy-saving 50% wall. It hardly increases the building area and can reduce the thickness of the external load-bearing wall to 190mm or 240mm, so the total external wall The self-weight can be reduced by 1/3 to 1/2, thereby reducing the earthquake response and foundation load.

2. Increase the effective use area

With this system, the external load-bearing wall can be reduced to 240mm or 190mm. Compared with sandwich walls or other walls, because it occupies almost no building area and greatly reduces the thickness of the wall, it increases the area utilization of the house than the sandwich wall structure. The rate is about 3%.

3. No thermal bridge

The EPS external thermal insulation system can wrap any exposed wall of the building, and it can be made almost without thermal bridges.

4. The construction method is flexible and adaptable

The system adopts special cement, EPS board and flexible glass mesh reinforcement that can be cut and formed at will, and a wide selection of decorative coatings, resulting in great flexibility in the molding process of the system and can be used for mass (building) Tailoring and sewing on-site (bonding), regardless of the new and old buildings and any kind of wall, can be sewn into the outer wall of the building or the outer contour of the building into a personal lightweight insulation jacket, which is vividly called the building by foreign materials "Spacesuit", which can not be better summed up the huge advantages of this system; it is very decorative, plasticity, this system can be used to make building walls of various thicknesses, various shapes, and architectural aesthetics. Come with decoration.

5. Easy to change and modify

Simple tools can be used to cut and repair the existing EPS insulation layer, which is as easy as repairing bicycle tires.

The normal maintenance of the system is only to replace the coating of the exterior finish once every few years, and the required coating can be directly painted on the treated surface so that the appearance of the building can always maintain a beautiful color.

6. Protect the wall

This system can effectively protect the load-bearing wall (skeleton) from external invasion, especially for the protection of wall cracks. The wall cracks of ordinary masonry structures are everywhere, and this system can reduce the wall cracks. Unfold. The use of adhesive cement and glass mesh reinforcement layer can also reinforce the cracked wall.

7. Sufficient strength and durability

The system has sufficient strength and durability that the building's thermal insulation wall should have, and is shown in:

(1) Special clay

It is a binder formed by uniformly mixing a polymer emulsion and an equal amount of cement. It has a strong adsorption and bonding ability to the media material, and after hardening, it retains the viscoelasticity of the organic material and the strength of the cement. A kind of stable bonding material, especially with reliable weather resistance (freeze-thaw resistance), durability and chemical stability (oxidation resistance), etc. The adhesion and durability of this system have been the construction practice abroad for decades Confirmed.

(2) Reinforced glass mesh layer

The reinforcement layer of this system, which is composed of alkali-resistant or alkali-resistant glass mesh cloth and special mortar, is called armor shell abroad. Together with EPS, it has a strong impact (impact) toughness and is suitable for walls. Under the external conditions, it produces great deformation and repeated freezing and thawing without cracking.

(3) Finish coating

Reinforced glass mesh layer is a very ideal coating interface, which can be painted with various coatings or decorative layers matched with it, and has sufficient weather resistance, ultraviolet resistance, waterproof performance, and decorative functions.

(4) EPS board

EPS board is a low thermal conductivity material with outstanding advantages such as extremely low water absorption, high compressive strength, high tensile strength, low-temperature resistance, self-extinguishing, etc., and becomes the main bedding material of the system.