There is a hollow in the center of the door. Please answer professionals. The painter said, "do not spray on the bottom," said the center is empty, afraid of expansion cracking, whether it is deceptive?
You're not right.Molded door hollow, a vent hole communicated with the upper and lower middle pier.The standard construction shall be the back cover paint. Thus, the sealing surface of the sealing surface of the closed molded surface and the skeleton is prevented.
Primers should be applied to seal the paint so as to prevent moisture from becoming more durable after sealing the paint
Do not edge, this is called "flow hole", if sealed door will soon deformation, this is basic common sense.The doors are made of mixed oil of two or more than two kinds of main materials, wood manufacturing process directly affects the service life of the door, wooden doors generally used for a period of time, often prone to cracking and deformation phenomenon, thereby reducing the door sound insulation, sealing and performance. In order to improve the service life, the top and bottom sealing is the key link.
