Is it necessary to use layering at the door of installing solid wood composite floor?

The national standard GB/T20238-2006 "Code for Paving, Acceptance and Use of Wood Floors" stipulates that when paving solid wood floors, expansion joints should be set at appropriate positions and used for transition with buckles when the paving length in the floor width direction is >: 6m or the paving length in the floor length direction is > 15m. Near the door, it is advisable to set expansion joints and use buckles for transition. The buckle should be installed firmly. "

In the actual paving, it is a common method to set expansion joints at each indoor entrance and buckle the transition, exactly as you said.

Of course, under the premise that certain requirements are met according to the room type conditions, the floor laying area is not large, and the paver has enough experience in the wet expansion and dry shrinkage of the floor you bought and the local humidity change, it can be considered that some or all doorways are not provided with expansion joints.

My personal suggestion is to be conservative, and it's better to do it according to the opinions of the flooring manufacturer.