Dark Strand or Heat Treated Bamboo Flooring Processing

Dark strand bamboo flooring is the best bamboo outdoor decking. It has better stability then regular strand woven bamboo decking. Dark strand bamboo will not have the problems of bending, splitting, and mushroom.

First, we need make a dark carbonized bamboo, for this step, we put the bamboo strips into a carbonizing pot, after few hours, the strips come out with dark color and over carbonized. The strips are very soft and fragile.

Heat treated bamboo strips

Second, we press the over carbonized bamboo strips to be a board of 2450 x 1840 x 22mm, this pressing is similar as strand woven bamboo, including gluing strips, heating the strips, making the panel, cooling the board etc.

7 layers presser

Last, we cut the big size panel into the sizes we want, like 2440 x 140 x 20mm or 1840 x 140 x 20mm, as this is the standard size of bamboo outdoor decking.

The key difference between regular bamboo with dark strand bamboo is not on the glue, but the special treatment on bamboo strips. Regular bamboo is 4 hours carbonizing, and dark strand bamboo is 12 hours carbonizing, so the carbonization is very different and this makes bamboo look very dark, almost black color. With long time carbonizing, it will get bamboo strips very dry and moisture is super low, almost zero, so after pressing with glue, the decking is very stable and no bending, moldy and splitting.

Pressed block