Is it necessary to leave gaps in the aluminum-plastic panel of the door head？

In general, the aluminum-plastic panel at the door head needs to have gaps for drainage and expansion and contraction.
1、 Characteristics of aluminum-plastic panel for door heads
As a material for door signs, aluminum-plastic panels have the characteristics of being lightweight, aesthetically pleasing, corrosion-resistant, and easy to install. Therefore, it is widely used in door decoration.
2、 Construction requirements for aluminum-plastic panel at the door head
The construction of aluminum-plastic panels for door heads should pay attention to the following points:
1. The treatment of the grassroots should be solid and flat, generally using cement mortar plastering treatment.
2. The installation of aluminum-plastic panels at the door should be parallel to the ground and fixed with galvanized self tapping screws.
During the installation of aluminum-plastic panels at the door, attention should be paid to leaving gaps, which are generally controlled in millimeters to facilitate drainage and expansion and contraction.
4. The corners of the aluminum-plastic panel at the door head should be sealed with specialized aluminum profiles to enhance the aesthetic and stability of the door head.
5. The surface of the aluminum-plastic panel at the door needs to be treated with edge sealing glue to improve its waterproof and stain resistance.
3、 Do we need to leave gaps in the aluminum-plastic panel at the door?
In general, the aluminum-plastic panel at the door head needs to leave a seam. This is because the aluminum-plastic panel at the door head will expand and contract due to factors such as temperature changes and humidity during construction and use. If no seams are left, it will cause problems such as blistering, deformation, and cracking on the surface of the aluminum-plastic panel of the door head, affecting the appearance and service life of the door head. Therefore, in order to ensure the stability and reliability of the aluminum-plastic panel at the door head, we should leave gaps during construction.
4、 The correct method and precautions for leaving gaps in aluminum-plastic panels at door heads
The gap between the aluminum-plastic panel at the door should generally be within millimeters to facilitate drainage and expansion and contraction.
2. Sealing glue should be used to seal the gaps to improve their waterproof and sealing performance.
3. When leaving gaps, be careful not to leave them too large, otherwise it will affect the appearance and overall performance of the door.
During the construction of aluminum-plastic panels for door heads, the number and size of gaps and gaps should be reasonably arranged and operated according to the actual situation of the door head.