1. Preparation before installation
Materials & Tools
Materials: Aluminum alloy corners, matching screws or rivets, sealant, waterproof tape (if applicable).
Tools: electric drills, screwdrivers, levels, tape measures, cutting tools (such as angle grinders or metal saws), markers.
Wall inspection
Make sure the wall is flat, dry, and free of oil or dust.
Check the installation of aluminum alloy exterior wall panels to ensure that the keel or base layer is firmly fixed.
2. Installation steps
Measuring & Cutting
Use a tape measure to measure the desired length of the angular line and mark the cutting location.
Use an angle grinder or metal saw to cut the aluminum alloy angle wire along the marked line to ensure that the cut is flat and burr-free.
Positioning & Marking
Place the corners in the corners, adjust the verticality using a level, and mark the fixed point locations with a marker.
The spacing between fixed points is generally 300-500mm, which is adjusted according to the angular length and design requirements.
Fixed corners
Method 1 (Screw fixing):
Drill holes in marked locations with a hole diameter slightly smaller than the screw diameter.
Align the angles with the holes and use a screwdriver or electric drill to tighten the screws.
Method 2 (rivet fixation):
Use a rivet gun to thread the rivet through the corner line and the wall base layer to ensure that the rivet is secure.
Sealed treatment
Apply sealant to the joints between the corners and the wall to prevent rainwater from seeping in.
For extra waterproofing, apply waterproof tape to the seams.
Closing and inspection
Check whether the corner line is installed firmly and whether the surface is flat.
Clean up excess glue stains to ensure a neat appearance.
3. Precautions
Security protection
Wear goggles and gloves when operating to prevent cutting splinters or metal shavings from injuring people.
When using an electric drill or angle grinder, make sure the power supply is well grounded.
Environmental requirements
Avoid construction in rainy days or high temperature environments, so as not to affect the performance of the sealant.
The construction temperature is recommended to be between 5°C-35°C.
Material selection
The thickness of the aluminum alloy angle is recommended to be no less than 1.2mm to ensure strength.
Screws or rivets should be matched to the angular material to avoid galvanic corrosion.
Acceptance criteria
The angular perpendicularity deviation ≤ 2mm/m.
The seam width is uniform and the sealant is free of bubbles or cracks.
4. Common problems and solutions
Problem 1: Corner deformation
Cause: Insufficient material thickness or poor fixation.
Solution: Replace the corner wire with a thickness of ≥1.2mm to increase the density of the fixed point.
Problem 2: Water seepage from the joints
Cause: The sealant is not filled or aged.
Solution: Clean up the old adhesive and reapply the weather-resistant sealant.
Problem 3: Surface scratches
Cause: Bump during transportation or installation.
Solution: Repair with aluminum alloy special refinish paint.
