The intermediate department push without using one's hands that often discovers a sitting room sometimes rises, other is in not since arch, what is its reason?

The reason since floor arch is many sided.

The first reason: Because the floor is used undeserved, the faucet of kitchen or toilet or central heating run water, make time of floor bubble water too long, floor happening is wet bilge be out of shape, because of wet bilge dimension greatens nowhere is promoted, can arch rises;

The 2nd reason: When floor laid, too requirement fit together perfectly, spread too cheek by jowl, change as climate environment humidity, the floor is too close together, cannot expand as humidity, also can arch rises;

The 3rd reason: When floor laid, the shop arrives rely on a wall, the gap that should leave 2 centimeters serves as adjustable seam, use next stick baseboard to cover, some consumer for clean, allow laid worker seam stay finely as far as possible, fill with jackstraw even solid, also can make so floor cannot extend, can arch rises!

What is the reason of floor depth? Doesn't this content have the national level that says like manufacturer place requirement?

The cause that off color causes: Each tree is chopped after falling, chop goes bark, say macroscopically, its tectonic main feature has: Alburnum and duramen; Annual ring, early talent and late material; Conduit and tubal aperture... wait, among them depth of color of the heart that great part material plants, alburnum is apparently differ, the color of late material also depth is differ, accordingly, off color is the structure of lumber nature, it is natural instinctive quality, for this, export the floor of Europe, Japan, they want off shade intentionally, want scab, such more the instinctive quality of indication nature, the style that this is pursuit is differ. Because style pursuit is different, so color of some surface of aggrandizement wood floor make its have depth intentionally, have scar, appear more natural.

But, as laid the worker should notice when laid, according to different consumer demand laid, if like color even close, should carry before laid, lay the wooden floor of off color close together, the floor store with large chromatism is in those who place furniture below or the shop is in in keep to the side, can satisfy the customer of diverse demand so.

Off color does not have special requirement in the new standard that is about to come on stage really.