Prefab House Exterior Decorative Metal Panel
Prefab house exterior decorative metal panel are made of high-strength aluminum zinc or galvanized steel plates as substrates, with a unit area weight of only 1/5~1/3 of traditional brick and stone walls
List of Four Major Product Features
|
Dimension |
feature name |
specific description |
|
Physical properties |
Lightweight and high-strength |
Prefab house exterior decorative metal panel are made of high-strength aluminum zinc or galvanized steel plates as substrates, with a unit area weight of only 1/5~1/3 of traditional brick and stone walls |
|
safety protection |
fire rating |
The metal material itself is a B-class non combustible material, which does not produce toxic smoke when exposed to fire and can effectively block the spread of flames. |
|
Structurally stable |
Wind pressure resistance and impact resistance |
By using corrugated, profiled or composite reinforcement design, the wind pressure resistance performance of the board can reach ± 5kPa or more |
|
Environmental adaptation |
chemical corrosion resistance |
The coating is made of polyvinylidene fluoride (PVDF) or high-performance polyester, which has excellent acid rain and salt spray resistance |
What are the differences in weather resistance between dark and light-colored exterior wall panels?
It should be noted that the color itself-whether dark or light-does not directly determine the durability of metal panels. However, because different colors absorb solar radiation differently, they exhibit distinct performance characteristics over long-term use.
Dark-colored Prefab house exterior decorative metal panel:
Higher heat absorption capacity, resulting in relatively higher panel surface temperatures in summer.
Greater thermal expansion and contraction, requiring higher installation quality standards.
In areas with prolonged strong UV exposure, color changes are more easily noticeable to the naked eye.
It is recommended to use high-quality coatings with superior weather resistance to enhance color retention.
Light-colored Prefab house exterior decorative metal panel:
Stronger reflection of solar radiation, which helps reduce panel surface temperature.
Smaller thermal deformation, making them more suitable for hot climates.
Even if slight fading occurs, visual chages are usually less apparent.
Lower long-term maintenance costs.
For tropical, high-temperature, or intense-sunlight regions, choosing light-colored panels is generally more beneficial for controlling building surface temperatures.
Do localized scratches on metal panels require full replacement?
Prefab house exterior decorative metal panel may suffer accidental impacts during transportation, installation, or later use, resulting in occasional localized scratches. Does this mean the entire wall must be removed and replaced? The answer is no-it depends on the specific situation.
How to determine whether a scratch requires replacement?
Minor scratches: Manifested as fine surface marks that do not expose the bare metal substrate, with no obvious dents or deformation.
Such scratches usually do not affect the structural integrity or waterproofing performance of the panel and can be locally repaired to restore appearance.
Moderate scratches: The coating is penetrated, the metal substrate is exposed, and there is slight local deformation.
In this case, the exposed area should be cleaned and treated with anti-corrosion measures as soon as possible, and sealed with matching repair materials to prevent long-term exposure that could lead to corrosion.
What components typically make up the door/window joints of prefabricated panels?
|
Component |
Primary Function |
|
Exterior wall metal panel |
Provides external decoration and weather protection |
|
Door/window frame |
Holds the door/window unit in place and provides fixation |
|
Trim edge pieces |
Covers connection gaps and directs rainwater drainage |
|
Sealant materials |
Prevents rainwater and air from entering the joint interior |
|
Fasteners |
Ensures secure connection between all components |
|
Waterproof layer |
Enhances overall waterproofing reliability |
How to reserve installation gaps?
You need to pay attention to the following points:
1. If the gap is too small, it may cause the sheet to deform under pressure due to temperature changes.
2. If the gap is too large, it will increase the difficulty of sealing construction and affect the overall appearance.
3. The gaps should be kept uniform and consistent for easy installation of sealing materials and edge finishing components.
In addition, it is also important to pay attention to the edge closure, which is more important than sealant.
Many customers believe that using high-quality sealant can solve all waterproofing problems. However, in reality, edge finishing components are an important part of the waterproof design of Prefab house exterior decorative metal panel door and window nodes.
Its main functions include:
1. Guide rainwater to be discharged outward to reduce water accumulation.
2. Cover the cut of the board to improve weather resistance.
3. Reduce long-term exposure to ultraviolet radiation on the sealant.
4. Improve the overall aesthetics of the node.
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