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Q:Installing aluminum panels on exterior walls requires the use of which basic accessories?
A:Core components include:
1. Stud system (light steel or aluminum alloy studs) — support framework;
2. Angle brackets and bolts — fix the studs to the wall;
3. Special clamping plates (snap-on panels) or hangers — lock the aluminum plastic panels;
4. Weatherproof sealant (such as silicone sealant) — fill gaps and waterproof;
5. Expansion bolts or chemical anchors — anchor the studs into the base wall.
Note: Leveling shims may be required depending on the flatness of the wall.
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Q:Why is aluminum alloy used for Stud system instead of steel?
A:Aluminum alloy keel has advantages such as corrosion resistance, lightweight, and no cold bridge effect, making it particularly suitable for humid or coastal areas. If budget constraints exist, hot-dip galvanized steel keel can be chosen (ensuring the galvanizing layer ≥ 120g/㎡), but its long-term durability still slightly lags behind that of aluminum alloy.
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Q:Which is more reliable when fixing alucobond panels: pressing plates or hangers?
A:There are two methods, each suitable for different scenarios:
• Press plate (visible screw): low cost and quick installation, but the exposed screws affect aesthetics;
• Hidden hangers: fixed through edge grooves of the board, no visible screw holes, stronger wind resistance, recommended for high-rise buildings or areas prone to typhoons.
Key point: Regardless of the method used, the screws must be made of stainless steel (such as 304/316) to prevent rust and contamination of the panel surface.
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Q:What considerations should be taken into account when selecting sealant?
A:Neutral weatherproof silicone sealant must be used, and attention should be paid to the following points:
✅ Compatibility: Ensure that the sealant does not undergo chemical reactions with the coating of aluminum plastic panels (such as PVDF);
✅ Color matching: Select sealant that matches the panel color or is transparent;
❌ Prohibit the use of acidic sealants—they can corrode the edges of aluminum panels;
❌ Prohibit the use of cheap fillers—they are prone to cracking and water seepage.
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Q:Which accessories are often overlooked but important?
A:Undervalued critical accessories:
1. Breathable waterproof gasket: installed between the main structure and the wall to prevent condensation damage;
2. Thermal break strip: used at metal main structure contact points to reduce heat conduction;
3. Edge finishing strips (U-shaped/P-shaped): protect the board's cut edges and enhance aesthetics;
4. Lightning protection connectors: for high-rise buildings, aluminum panel frames need to be connected to the lightning protection system.
