Introduction to the advantages of polyurethane hard bubble waterproof and insulation integrated board

Polyurethane hard bubble waterproof and insulation integrated board is a new type of building board that integrates waterproof, insulation, heat insulation, lightweight, durability and other functions. It is widely used in industrial factories, cold storage, civil buildings exterior walls, roofs and other scenarios. Its core advantage is that it combines the high performance of polyurethane hard foam with the convenient construction characteristics of the board. The following is a detailed introduction to the advantages:

1. Excellent thermal insulation performance

Low thermal conductivity

The thermal conductivity of polyurethane hard bubbles is only 0.022-0.028 W/(m·K), which is far lower than traditional insulation materials (such as polystyrene plate 0.038 W/(m·K), rock wool 0.035 W/(m·K)), which can effectively reduce heat transfer and reduce building energy consumption.

Application scenario: It is suitable for buildings with severe cold areas or high energy-saving requirements, such as northern residential exterior wall insulation, cold storage enclosure structure, etc.

Closed-cell structure, moisture-proof and heat-insulating

The closed cell ratio of polyurethane hard bubbles is as high as more than 95%, making it difficult to penetrate water, avoiding the degradation of thermal insulation performance caused by water absorption (the thermal conductivity of traditional materials such as rock wool can increase by more than 30% after water absorption).

Advantages: It can still maintain stable insulation effect in humid environments (such as basements and bathrooms) and extend its service life.

2. Efficient waterproof function

Seamless waterproof layer

The surface of the board is usually covered with high-strength waterproof coils (such as TPO, PVC) or coatings (such as polyurethane waterproof coatings), forming a continuous waterproof layer to eliminate the risk of leakage.

Comparison of traditional waterproofing: Traditional waterproof rolls need to be laid on site, which is prone to leakage due to construction defects; while integrated boards are prefabricated by factory, making the quality more controllable.

Resistant to puncture and aging

The waterproof layer is closely combined with the polyurethane hard foam substrate, with high puncture resistance (can reach more than 1.5kN), and can resist construction trampling and scratches from sharp objects.

Weather resistance: After ultraviolet accelerated aging test (such as QUV test for 2000 hours), the waterproof layer has no cracking or peeling, and is suitable for long-term exposure environments.

3. Lightweight and high-strength, convenient construction

Light weight, reduce load

The plate density is only 30-50 kg/m³, which is 1/10 of the traditional concrete insulation layer, which can significantly reduce the building's own weight and reduce structural costs.

Application case: In the renovation of old houses, it can be installed directly without strengthening the original structure, shortening the construction period.

Modular design, quick installation

The plates are equipped with standardized sizes (such as 1.2m×2.4m), and are directly installed through mechanical fixing (such as expansion bolts) or bonding, and the construction efficiency is more than 50% higher than that of traditional processes.

Advantages: Reduce on-site wet operations, reduce dust and noise pollution, and meet green construction requirements.

Adapt to complex shapes

The sheet is bent (minimum curvature radius ≤1.5m), suitable for special roofs (such as arches, spherical) or curved exterior walls, without the need for additional custom molds.

4. Durability and environmental protection

Long-term stability

Polyurethane hard foam has stable chemical properties and is resistant to acid and alkali corrosion. Its service life can reach more than 30 years (traditional materials such as polystyrene boards are prone to aging and embrittlement, and their service life is about 15 years).

Case verification: In cold European regions, integrated boards that have been in use for more than 25 years still maintain good performance.

Environmentally friendly and pollution-free

In the production process of the sheet, environmentally friendly foaming agents (such as HFC-245fa) are used, with the ozone depletion potential (ODP) of 0, and the global warming potential (GWP) is lower than that of traditional HCFC foaming agents.

Certification standards: Comply with China's 'Green Building Materials Evaluation Standard' (GB/T 51366-2019) and EU CE certification requirements.

V. Comprehensive cost advantages

Low cost throughout the life cycle

Although the unit price is slightly higher than traditional insulation and waterproof materials, the overall cost can be reduced by 20%-30% due to the short construction cycle and low maintenance costs (no regular waterproof layer replacement is required).

Economic analysis: Taking the 1000㎡ roof as an example, the total cost of integrated panels is about 120 yuan/㎡, and the traditional technology (construction of insulation + waterproofing separately) is about 150 yuan/㎡.

Policy support and subsidies

In line with the requirements of China's '14th Five-Year Plan for Building Energy Conservation and Green Building Development', energy-saving renovation subsidies can be enjoyed in some areas (such as the Beijing subsidy standard is 30 yuan/㎡).

6. Application scenario expansion

Industrial building: The factory roof and exterior walls are heat-insulating and waterproof, solving the problems of the prone to rust and insulation differences in traditional color steel plates.

Cold chain logistics: Cold storage enclosure structure, maintain a constant temperature environment, and reduce energy consumption.

Civil buildings: residential exterior walls and basement roof panels to improve living comfort.

Municipal engineering: subway tunnels and viaduct sound insulation screens, both thermal insulation and waterproofing functions.

Summarize

The polyurethane hard bubble waterproof and insulation integrated board is integrated through material innovation and process integration, achieving 'one board and multi-purpose' and is superior to traditional combination solutions in terms of insulation performance, waterproof reliability, construction efficiency, durability, etc. With the improvement of building energy-saving standards and the popularization of green construction concepts, its market application prospects are broad and it is an ideal choice for modern building enclosure structures.