The first step in this process is sorting the bamboo strips into groups of like color. Because bamboo is a natural product, color variations occur. The bamboo strips are sorted so that each board is made with strips of similar shade; otherwise the boards would appear striped.

After the strips have been sorted for color, they are sorted for hardness. The hardest strips are marked for use as the top layer of the boards. Softer strips are marked for use on the bottom or middle of the boards.

After sorting, the bamboo is assembled into planks.

For solid boards, the strips are glue-coated and hand assembled in either vertical or  horizontal configuration.

For engineered boards, the bamboo strips are mounted on either side of a center layer of pine.

At this stage, it is apparent why the strips must be perfectly rectangular so that all sides bond completely with the adjacent strips.

Irregular shaped strips do not form complete bonds with the other strips and pockets of air are left within the board. This decreases strength because the board is less dense and the bonded surface area between the strips is smaller. A board made in this way is also more susceptible to structural instability because moisture can easily penetrate to the center of the board .
 


ecostrong difference

The grain of the bamboo stalk is denser and harder toward the outside of the stalk and softer towards the center. You can actually see this by looking at the flat end of a bamboo flooring board. The outside is darker and has a higher density of fiber that appears as small dark spots. The inside is lighter and has fewer of these spots: Thus each bamboo strip has a harder and softer side . ecostrong uses this natural tendency of bamboo to improve the hardness and stability of its boards.

When assembling the horizontal ecostrong bamboo board, the dense side always faces out. Thus for the top layer of a horizontal board, the dense side of the bamboo faces up.

For the bottom layer of a horizontal board, the dense side of the bamboo faces down. For the middle layer, the sides are alternated in order to increase the stability of the flooring.

When assembling the vertical bamboo board, the strips are positioned so that the dense sides radiate out for the center of the board. This increases the stability of the boards.

ecostrong uses a top-quality, environmentally friendly adhesive produced in Germany. The adhesive is specifically designed for parquet and bamboo flooring applications. It is not only very strong; it is also free from harmful chemicals that can be present in lower quality glues.
 
 
   
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